Virtual Evaluation Board for NCV8876 AsumaDesigner139151 × Asuma Member for 6 years 8 months 22 designs 1 groups Title Description <p>This design is a “Live, Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can modify various parameter values (as indicated in blue) and then run new simulations to see the effects of those changes, This "Live, virtual" testing of the NCV8876 and help the user gain a better understanding of its features and behavior.</p><p>The nominal simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.0V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (3.0V, blue waveform).</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Asuma × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/251450"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/251450"></iframe> Share a Link Copy URL https://explore.partquest.com/node/251450 Virtual Evaluation Board for NCV8876 Mike DonnellyDesigner19 × Mike Donnelly Member for 10 years 4 months 1,529 designs 10 groups Title Description <p>This design is a “Live, Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can modify various parameter values (as indicated in blue) and then run new simulations to see the effects of those changes, This "Live, virtual" testing of the NCV8876 and help the user gain a better understanding of its features and behavior.</p><p>The nominal simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.0V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (3.0V, blue waveform).</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Mike Donnelly × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/240729"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/240729"></iframe> Share a Link Copy URL https://explore.partquest.com/node/240729 NCV887720 - Evaluation Board Test RobertDavisDesigner256 × RobertDavis Member for 8 years 10 months 135 designs 1 groups Title Description <p>This design is modified from the NCV8876 model. </p> About text formats Tags Start-StopboostSoft SaturationEvaluation Board Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby RobertDavis × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/206351"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/206351"></iframe> Share a Link Copy URL https://explore.partquest.com/node/206351 NCV887601BSTGEVB - Evaluation Board Test - Surinder PatocDesigner147361 × Patoc Member for 6 years 6 months 5 designs 1 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Patoc × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/201181"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/201181"></iframe> Share a Link Copy URL https://explore.partquest.com/node/201181 NCV8876 - With Power-Saving Diode Bypass Circuit sherwinDesigner1066 × sherwin Member for 8 years 6 months 10 designs 1 groups Title Description <p>This is a reference design for the ON Semiconductor NCV8876 Start-Stop Boost Controller (http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF). It is a more complex but higher efficiency implementation than the companion design: https://www.systemvision.com/design/ncv8876-circuit-showing-emc-component-reuse. This version is intended for use with higher power loads.</p><p>This circuit includes a PMOS bypass switch, such that the rectifier diode voltage drop is not present under normal battery voltage conditions. All of the load current flows through the bypass PMOS during normal operation. When the battery voltage falls below the "wake-up" level, the NCV8876 status pin transition provides an early indication that the boost switching is about to begin. This signal is inverted and level-shifted by the BJT circuit. This deactivates the bypass PMOS, forcing the boosted load current through the rectifier diode. When the battery voltage recovers and the output voltage rises, the status re-activates the PMOS bypass and normal operation resumes.</p><p>Simulation results show the output to the 20W load during battery drop-out and recovery. Note that in this application, the output voltage (red waveform) is maintained above 5.5V during the drop-out transient, and regulates at 6.8V as the input voltage at the PCB drops to a minimum value of 3V (light blue waveform). The bypass transition can also be observed, with the PMOS gate voltage (purple waveform) and the Ids current (dark green waveform) shown in the lower waveform viewer. Note that no bypass current flows during boost switching. The current transfer to the diode can be observed by moving one of the waveform probes to the diode and choosing to plot "id".</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby sherwin × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/169586"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/169586"></iframe> Share a Link Copy URL https://explore.partquest.com/node/169586 NCV887601BSTGEVB - Evaluation Board Test YutoAmanoDesigner123151 × YutoAmano Member for 6 years 11 months 1 designs 1 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby YutoAmano × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/159451"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/159451"></iframe> Share a Link Copy URL https://explore.partquest.com/node/159451 NCV8876 - Automotive Start-Stop Boost Controller GaryWDesigner121191 × GaryW Member for 6 years 11 months 1 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby GaryW × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/156456"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/156456"></iframe> Share a Link Copy URL https://explore.partquest.com/node/156456 NCV8876 - Automotive Start-Stop Boost Controller AlfonsoDesigner110486 × Alfonso Member for 7 years 1 month 5 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Alfonso × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/141111"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/141111"></iframe> Share a Link Copy URL https://explore.partquest.com/node/141111 NCV8876 - Overcurrent Protection DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This example demonstrates the overcurrent protection capabilities of the ON Semiconductor NCV8876. It complements the design: https://www.systemvision.com/design/ncv8876-automotive-start-stop-boost-controller, which shows the performance of the device in normal operation. But in this design, the inductor element proves inadequate for boost operation under a heavy load condition. Inductance collapse, caused by core saturation, could lead to damaging peak current levels in multiple electronic components, were it not for the “hiccup-mode” overcurrent protection feature of the NCV8876. </p><p>Simulation results show that the boost output voltage (dark blue waveform) falls to approximately 5V when the battery voltage (orange waveform) drops to 6V. This is in contrast to the nominal circuit operation, in which the NCV8876 would enter boost control mode and maintains a 6.8V boost output level. But because of the low drop-out voltage of the NCV59302 VLDO, the 5V regulated output voltage is only slightly reduced. The current through the 2.3 Ohm load resistor is maintained at just under 2.2A throughout the entire operation.</p><p>While this load level is within the current rating of the inductor (2.3A RMS Max.), it is approaching the saturation inductance “cliff” for this traditional (i.e. non-soft-saturating) part. So when the NCV8876 activates boost control, it switches on the Power MOSFET briefly, effectively grounding the low side of the inductor through the small current sense resistance (0.03 Ohms). With the nominal 3.3uH inductance value, this would result in a slow current build-up (V/L = di/dt = 6V/3.3uH = 1.8A/us). But in this case the inductance collapses with further current increase, and the di/dt value becomes very large. The inductor current spikes to well over 10A (light blue waveform), and the corresponding inductance crashes to a small fraction of its nominal value (green waveform).</p><p>The current spikes could have gone much higher, possibly resulting in damage to the NVGS3130 Power MOSFET, which has a rated pulse current maximum of 19A. In the zoomed-in view, the magenta waveform shows the Ids current rising, slowly at first while the inductance is intact, but then rapidly rising to over 11A as the inductance collapses, all in just 100ns! Fortunately the gate voltage (brown waveform) is cut off to prevent further current rise. This is thanks to the overcurrent protection feature of the NCV8876. When an overcurrent condition is detected, the device immediately goes into “hiccup-mode”, in which the gate drive is turned off and remains off for a count of 1024 clock cycles. After the mandatory hiccup period, the NCV8876 reattempts boost operation, but with continued overcurrent monitoring. Note that the current spikes are repeated with just over a 2ms period, because the clock is programmed to just over 2 us period (450 kHz switching frequency) in this design.</p><p>To learn more about the capabilities of the ON Semiconductor NCV8876, click here: http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>To learn more about the benefits of Coilcraft's molded core soft saturation technology for reducing problems with current spikes, see page 4 of this document: http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> About text formats Tags Start-StopboostSoft SaturationNCV8876overcurrenthiccup mode Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/97141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/97141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/97141 NCV887601BSTGEVB - Evaluation Board Test DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/96141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/96141 Pagination Previous page ‹‹ Page 2 Next page ››
Virtual Evaluation Board for NCV8876 Mike DonnellyDesigner19 × Mike Donnelly Member for 10 years 4 months 1,529 designs 10 groups Title Description <p>This design is a “Live, Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can modify various parameter values (as indicated in blue) and then run new simulations to see the effects of those changes, This "Live, virtual" testing of the NCV8876 and help the user gain a better understanding of its features and behavior.</p><p>The nominal simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.0V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (3.0V, blue waveform).</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Mike Donnelly × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/240729"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/240729"></iframe> Share a Link Copy URL https://explore.partquest.com/node/240729 NCV887720 - Evaluation Board Test RobertDavisDesigner256 × RobertDavis Member for 8 years 10 months 135 designs 1 groups Title Description <p>This design is modified from the NCV8876 model. </p> About text formats Tags Start-StopboostSoft SaturationEvaluation Board Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby RobertDavis × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/206351"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/206351"></iframe> Share a Link Copy URL https://explore.partquest.com/node/206351 NCV887601BSTGEVB - Evaluation Board Test - Surinder PatocDesigner147361 × Patoc Member for 6 years 6 months 5 designs 1 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Patoc × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/201181"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/201181"></iframe> Share a Link Copy URL https://explore.partquest.com/node/201181 NCV8876 - With Power-Saving Diode Bypass Circuit sherwinDesigner1066 × sherwin Member for 8 years 6 months 10 designs 1 groups Title Description <p>This is a reference design for the ON Semiconductor NCV8876 Start-Stop Boost Controller (http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF). It is a more complex but higher efficiency implementation than the companion design: https://www.systemvision.com/design/ncv8876-circuit-showing-emc-component-reuse. This version is intended for use with higher power loads.</p><p>This circuit includes a PMOS bypass switch, such that the rectifier diode voltage drop is not present under normal battery voltage conditions. All of the load current flows through the bypass PMOS during normal operation. When the battery voltage falls below the "wake-up" level, the NCV8876 status pin transition provides an early indication that the boost switching is about to begin. This signal is inverted and level-shifted by the BJT circuit. This deactivates the bypass PMOS, forcing the boosted load current through the rectifier diode. When the battery voltage recovers and the output voltage rises, the status re-activates the PMOS bypass and normal operation resumes.</p><p>Simulation results show the output to the 20W load during battery drop-out and recovery. Note that in this application, the output voltage (red waveform) is maintained above 5.5V during the drop-out transient, and regulates at 6.8V as the input voltage at the PCB drops to a minimum value of 3V (light blue waveform). The bypass transition can also be observed, with the PMOS gate voltage (purple waveform) and the Ids current (dark green waveform) shown in the lower waveform viewer. Note that no bypass current flows during boost switching. The current transfer to the diode can be observed by moving one of the waveform probes to the diode and choosing to plot "id".</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby sherwin × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/169586"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/169586"></iframe> Share a Link Copy URL https://explore.partquest.com/node/169586 NCV887601BSTGEVB - Evaluation Board Test YutoAmanoDesigner123151 × YutoAmano Member for 6 years 11 months 1 designs 1 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby YutoAmano × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/159451"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/159451"></iframe> Share a Link Copy URL https://explore.partquest.com/node/159451 NCV8876 - Automotive Start-Stop Boost Controller GaryWDesigner121191 × GaryW Member for 6 years 11 months 1 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby GaryW × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/156456"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/156456"></iframe> Share a Link Copy URL https://explore.partquest.com/node/156456 NCV8876 - Automotive Start-Stop Boost Controller AlfonsoDesigner110486 × Alfonso Member for 7 years 1 month 5 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Alfonso × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/141111"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/141111"></iframe> Share a Link Copy URL https://explore.partquest.com/node/141111 NCV8876 - Overcurrent Protection DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This example demonstrates the overcurrent protection capabilities of the ON Semiconductor NCV8876. It complements the design: https://www.systemvision.com/design/ncv8876-automotive-start-stop-boost-controller, which shows the performance of the device in normal operation. But in this design, the inductor element proves inadequate for boost operation under a heavy load condition. Inductance collapse, caused by core saturation, could lead to damaging peak current levels in multiple electronic components, were it not for the “hiccup-mode” overcurrent protection feature of the NCV8876. </p><p>Simulation results show that the boost output voltage (dark blue waveform) falls to approximately 5V when the battery voltage (orange waveform) drops to 6V. This is in contrast to the nominal circuit operation, in which the NCV8876 would enter boost control mode and maintains a 6.8V boost output level. But because of the low drop-out voltage of the NCV59302 VLDO, the 5V regulated output voltage is only slightly reduced. The current through the 2.3 Ohm load resistor is maintained at just under 2.2A throughout the entire operation.</p><p>While this load level is within the current rating of the inductor (2.3A RMS Max.), it is approaching the saturation inductance “cliff” for this traditional (i.e. non-soft-saturating) part. So when the NCV8876 activates boost control, it switches on the Power MOSFET briefly, effectively grounding the low side of the inductor through the small current sense resistance (0.03 Ohms). With the nominal 3.3uH inductance value, this would result in a slow current build-up (V/L = di/dt = 6V/3.3uH = 1.8A/us). But in this case the inductance collapses with further current increase, and the di/dt value becomes very large. The inductor current spikes to well over 10A (light blue waveform), and the corresponding inductance crashes to a small fraction of its nominal value (green waveform).</p><p>The current spikes could have gone much higher, possibly resulting in damage to the NVGS3130 Power MOSFET, which has a rated pulse current maximum of 19A. In the zoomed-in view, the magenta waveform shows the Ids current rising, slowly at first while the inductance is intact, but then rapidly rising to over 11A as the inductance collapses, all in just 100ns! Fortunately the gate voltage (brown waveform) is cut off to prevent further current rise. This is thanks to the overcurrent protection feature of the NCV8876. When an overcurrent condition is detected, the device immediately goes into “hiccup-mode”, in which the gate drive is turned off and remains off for a count of 1024 clock cycles. After the mandatory hiccup period, the NCV8876 reattempts boost operation, but with continued overcurrent monitoring. Note that the current spikes are repeated with just over a 2ms period, because the clock is programmed to just over 2 us period (450 kHz switching frequency) in this design.</p><p>To learn more about the capabilities of the ON Semiconductor NCV8876, click here: http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>To learn more about the benefits of Coilcraft's molded core soft saturation technology for reducing problems with current spikes, see page 4 of this document: http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> About text formats Tags Start-StopboostSoft SaturationNCV8876overcurrenthiccup mode Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/97141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/97141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/97141 NCV887601BSTGEVB - Evaluation Board Test DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/96141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/96141 Pagination Previous page ‹‹ Page 2 Next page ››
NCV887720 - Evaluation Board Test RobertDavisDesigner256 × RobertDavis Member for 8 years 10 months 135 designs 1 groups Title Description <p>This design is modified from the NCV8876 model. </p> About text formats Tags Start-StopboostSoft SaturationEvaluation Board Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby RobertDavis × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/206351"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/206351"></iframe> Share a Link Copy URL https://explore.partquest.com/node/206351 NCV887601BSTGEVB - Evaluation Board Test - Surinder PatocDesigner147361 × Patoc Member for 6 years 6 months 5 designs 1 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Patoc × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/201181"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/201181"></iframe> Share a Link Copy URL https://explore.partquest.com/node/201181 NCV8876 - With Power-Saving Diode Bypass Circuit sherwinDesigner1066 × sherwin Member for 8 years 6 months 10 designs 1 groups Title Description <p>This is a reference design for the ON Semiconductor NCV8876 Start-Stop Boost Controller (http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF). It is a more complex but higher efficiency implementation than the companion design: https://www.systemvision.com/design/ncv8876-circuit-showing-emc-component-reuse. This version is intended for use with higher power loads.</p><p>This circuit includes a PMOS bypass switch, such that the rectifier diode voltage drop is not present under normal battery voltage conditions. All of the load current flows through the bypass PMOS during normal operation. When the battery voltage falls below the "wake-up" level, the NCV8876 status pin transition provides an early indication that the boost switching is about to begin. This signal is inverted and level-shifted by the BJT circuit. This deactivates the bypass PMOS, forcing the boosted load current through the rectifier diode. When the battery voltage recovers and the output voltage rises, the status re-activates the PMOS bypass and normal operation resumes.</p><p>Simulation results show the output to the 20W load during battery drop-out and recovery. Note that in this application, the output voltage (red waveform) is maintained above 5.5V during the drop-out transient, and regulates at 6.8V as the input voltage at the PCB drops to a minimum value of 3V (light blue waveform). The bypass transition can also be observed, with the PMOS gate voltage (purple waveform) and the Ids current (dark green waveform) shown in the lower waveform viewer. Note that no bypass current flows during boost switching. The current transfer to the diode can be observed by moving one of the waveform probes to the diode and choosing to plot "id".</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby sherwin × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/169586"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/169586"></iframe> Share a Link Copy URL https://explore.partquest.com/node/169586 NCV887601BSTGEVB - Evaluation Board Test YutoAmanoDesigner123151 × YutoAmano Member for 6 years 11 months 1 designs 1 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby YutoAmano × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/159451"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/159451"></iframe> Share a Link Copy URL https://explore.partquest.com/node/159451 NCV8876 - Automotive Start-Stop Boost Controller GaryWDesigner121191 × GaryW Member for 6 years 11 months 1 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby GaryW × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/156456"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/156456"></iframe> Share a Link Copy URL https://explore.partquest.com/node/156456 NCV8876 - Automotive Start-Stop Boost Controller AlfonsoDesigner110486 × Alfonso Member for 7 years 1 month 5 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Alfonso × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/141111"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/141111"></iframe> Share a Link Copy URL https://explore.partquest.com/node/141111 NCV8876 - Overcurrent Protection DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This example demonstrates the overcurrent protection capabilities of the ON Semiconductor NCV8876. It complements the design: https://www.systemvision.com/design/ncv8876-automotive-start-stop-boost-controller, which shows the performance of the device in normal operation. But in this design, the inductor element proves inadequate for boost operation under a heavy load condition. Inductance collapse, caused by core saturation, could lead to damaging peak current levels in multiple electronic components, were it not for the “hiccup-mode” overcurrent protection feature of the NCV8876. </p><p>Simulation results show that the boost output voltage (dark blue waveform) falls to approximately 5V when the battery voltage (orange waveform) drops to 6V. This is in contrast to the nominal circuit operation, in which the NCV8876 would enter boost control mode and maintains a 6.8V boost output level. But because of the low drop-out voltage of the NCV59302 VLDO, the 5V regulated output voltage is only slightly reduced. The current through the 2.3 Ohm load resistor is maintained at just under 2.2A throughout the entire operation.</p><p>While this load level is within the current rating of the inductor (2.3A RMS Max.), it is approaching the saturation inductance “cliff” for this traditional (i.e. non-soft-saturating) part. So when the NCV8876 activates boost control, it switches on the Power MOSFET briefly, effectively grounding the low side of the inductor through the small current sense resistance (0.03 Ohms). With the nominal 3.3uH inductance value, this would result in a slow current build-up (V/L = di/dt = 6V/3.3uH = 1.8A/us). But in this case the inductance collapses with further current increase, and the di/dt value becomes very large. The inductor current spikes to well over 10A (light blue waveform), and the corresponding inductance crashes to a small fraction of its nominal value (green waveform).</p><p>The current spikes could have gone much higher, possibly resulting in damage to the NVGS3130 Power MOSFET, which has a rated pulse current maximum of 19A. In the zoomed-in view, the magenta waveform shows the Ids current rising, slowly at first while the inductance is intact, but then rapidly rising to over 11A as the inductance collapses, all in just 100ns! Fortunately the gate voltage (brown waveform) is cut off to prevent further current rise. This is thanks to the overcurrent protection feature of the NCV8876. When an overcurrent condition is detected, the device immediately goes into “hiccup-mode”, in which the gate drive is turned off and remains off for a count of 1024 clock cycles. After the mandatory hiccup period, the NCV8876 reattempts boost operation, but with continued overcurrent monitoring. Note that the current spikes are repeated with just over a 2ms period, because the clock is programmed to just over 2 us period (450 kHz switching frequency) in this design.</p><p>To learn more about the capabilities of the ON Semiconductor NCV8876, click here: http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>To learn more about the benefits of Coilcraft's molded core soft saturation technology for reducing problems with current spikes, see page 4 of this document: http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> About text formats Tags Start-StopboostSoft SaturationNCV8876overcurrenthiccup mode Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/97141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/97141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/97141 NCV887601BSTGEVB - Evaluation Board Test DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/96141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/96141 Pagination Previous page ‹‹ Page 2 Next page ››
NCV887601BSTGEVB - Evaluation Board Test - Surinder PatocDesigner147361 × Patoc Member for 6 years 6 months 5 designs 1 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Patoc × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/201181"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/201181"></iframe> Share a Link Copy URL https://explore.partquest.com/node/201181 NCV8876 - With Power-Saving Diode Bypass Circuit sherwinDesigner1066 × sherwin Member for 8 years 6 months 10 designs 1 groups Title Description <p>This is a reference design for the ON Semiconductor NCV8876 Start-Stop Boost Controller (http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF). It is a more complex but higher efficiency implementation than the companion design: https://www.systemvision.com/design/ncv8876-circuit-showing-emc-component-reuse. This version is intended for use with higher power loads.</p><p>This circuit includes a PMOS bypass switch, such that the rectifier diode voltage drop is not present under normal battery voltage conditions. All of the load current flows through the bypass PMOS during normal operation. When the battery voltage falls below the "wake-up" level, the NCV8876 status pin transition provides an early indication that the boost switching is about to begin. This signal is inverted and level-shifted by the BJT circuit. This deactivates the bypass PMOS, forcing the boosted load current through the rectifier diode. When the battery voltage recovers and the output voltage rises, the status re-activates the PMOS bypass and normal operation resumes.</p><p>Simulation results show the output to the 20W load during battery drop-out and recovery. Note that in this application, the output voltage (red waveform) is maintained above 5.5V during the drop-out transient, and regulates at 6.8V as the input voltage at the PCB drops to a minimum value of 3V (light blue waveform). The bypass transition can also be observed, with the PMOS gate voltage (purple waveform) and the Ids current (dark green waveform) shown in the lower waveform viewer. Note that no bypass current flows during boost switching. The current transfer to the diode can be observed by moving one of the waveform probes to the diode and choosing to plot "id".</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby sherwin × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/169586"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/169586"></iframe> Share a Link Copy URL https://explore.partquest.com/node/169586 NCV887601BSTGEVB - Evaluation Board Test YutoAmanoDesigner123151 × YutoAmano Member for 6 years 11 months 1 designs 1 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby YutoAmano × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/159451"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/159451"></iframe> Share a Link Copy URL https://explore.partquest.com/node/159451 NCV8876 - Automotive Start-Stop Boost Controller GaryWDesigner121191 × GaryW Member for 6 years 11 months 1 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby GaryW × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/156456"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/156456"></iframe> Share a Link Copy URL https://explore.partquest.com/node/156456 NCV8876 - Automotive Start-Stop Boost Controller AlfonsoDesigner110486 × Alfonso Member for 7 years 1 month 5 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Alfonso × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/141111"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/141111"></iframe> Share a Link Copy URL https://explore.partquest.com/node/141111 NCV8876 - Overcurrent Protection DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This example demonstrates the overcurrent protection capabilities of the ON Semiconductor NCV8876. It complements the design: https://www.systemvision.com/design/ncv8876-automotive-start-stop-boost-controller, which shows the performance of the device in normal operation. But in this design, the inductor element proves inadequate for boost operation under a heavy load condition. Inductance collapse, caused by core saturation, could lead to damaging peak current levels in multiple electronic components, were it not for the “hiccup-mode” overcurrent protection feature of the NCV8876. </p><p>Simulation results show that the boost output voltage (dark blue waveform) falls to approximately 5V when the battery voltage (orange waveform) drops to 6V. This is in contrast to the nominal circuit operation, in which the NCV8876 would enter boost control mode and maintains a 6.8V boost output level. But because of the low drop-out voltage of the NCV59302 VLDO, the 5V regulated output voltage is only slightly reduced. The current through the 2.3 Ohm load resistor is maintained at just under 2.2A throughout the entire operation.</p><p>While this load level is within the current rating of the inductor (2.3A RMS Max.), it is approaching the saturation inductance “cliff” for this traditional (i.e. non-soft-saturating) part. So when the NCV8876 activates boost control, it switches on the Power MOSFET briefly, effectively grounding the low side of the inductor through the small current sense resistance (0.03 Ohms). With the nominal 3.3uH inductance value, this would result in a slow current build-up (V/L = di/dt = 6V/3.3uH = 1.8A/us). But in this case the inductance collapses with further current increase, and the di/dt value becomes very large. The inductor current spikes to well over 10A (light blue waveform), and the corresponding inductance crashes to a small fraction of its nominal value (green waveform).</p><p>The current spikes could have gone much higher, possibly resulting in damage to the NVGS3130 Power MOSFET, which has a rated pulse current maximum of 19A. In the zoomed-in view, the magenta waveform shows the Ids current rising, slowly at first while the inductance is intact, but then rapidly rising to over 11A as the inductance collapses, all in just 100ns! Fortunately the gate voltage (brown waveform) is cut off to prevent further current rise. This is thanks to the overcurrent protection feature of the NCV8876. When an overcurrent condition is detected, the device immediately goes into “hiccup-mode”, in which the gate drive is turned off and remains off for a count of 1024 clock cycles. After the mandatory hiccup period, the NCV8876 reattempts boost operation, but with continued overcurrent monitoring. Note that the current spikes are repeated with just over a 2ms period, because the clock is programmed to just over 2 us period (450 kHz switching frequency) in this design.</p><p>To learn more about the capabilities of the ON Semiconductor NCV8876, click here: http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>To learn more about the benefits of Coilcraft's molded core soft saturation technology for reducing problems with current spikes, see page 4 of this document: http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> About text formats Tags Start-StopboostSoft SaturationNCV8876overcurrenthiccup mode Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/97141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/97141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/97141 NCV887601BSTGEVB - Evaluation Board Test DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/96141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/96141 Pagination Previous page ‹‹ Page 2 Next page ››
NCV8876 - With Power-Saving Diode Bypass Circuit sherwinDesigner1066 × sherwin Member for 8 years 6 months 10 designs 1 groups Title Description <p>This is a reference design for the ON Semiconductor NCV8876 Start-Stop Boost Controller (http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF). It is a more complex but higher efficiency implementation than the companion design: https://www.systemvision.com/design/ncv8876-circuit-showing-emc-component-reuse. This version is intended for use with higher power loads.</p><p>This circuit includes a PMOS bypass switch, such that the rectifier diode voltage drop is not present under normal battery voltage conditions. All of the load current flows through the bypass PMOS during normal operation. When the battery voltage falls below the "wake-up" level, the NCV8876 status pin transition provides an early indication that the boost switching is about to begin. This signal is inverted and level-shifted by the BJT circuit. This deactivates the bypass PMOS, forcing the boosted load current through the rectifier diode. When the battery voltage recovers and the output voltage rises, the status re-activates the PMOS bypass and normal operation resumes.</p><p>Simulation results show the output to the 20W load during battery drop-out and recovery. Note that in this application, the output voltage (red waveform) is maintained above 5.5V during the drop-out transient, and regulates at 6.8V as the input voltage at the PCB drops to a minimum value of 3V (light blue waveform). The bypass transition can also be observed, with the PMOS gate voltage (purple waveform) and the Ids current (dark green waveform) shown in the lower waveform viewer. Note that no bypass current flows during boost switching. The current transfer to the diode can be observed by moving one of the waveform probes to the diode and choosing to plot "id".</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby sherwin × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/169586"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/169586"></iframe> Share a Link Copy URL https://explore.partquest.com/node/169586 NCV887601BSTGEVB - Evaluation Board Test YutoAmanoDesigner123151 × YutoAmano Member for 6 years 11 months 1 designs 1 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby YutoAmano × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/159451"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/159451"></iframe> Share a Link Copy URL https://explore.partquest.com/node/159451 NCV8876 - Automotive Start-Stop Boost Controller GaryWDesigner121191 × GaryW Member for 6 years 11 months 1 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby GaryW × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/156456"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/156456"></iframe> Share a Link Copy URL https://explore.partquest.com/node/156456 NCV8876 - Automotive Start-Stop Boost Controller AlfonsoDesigner110486 × Alfonso Member for 7 years 1 month 5 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Alfonso × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/141111"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/141111"></iframe> Share a Link Copy URL https://explore.partquest.com/node/141111 NCV8876 - Overcurrent Protection DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This example demonstrates the overcurrent protection capabilities of the ON Semiconductor NCV8876. It complements the design: https://www.systemvision.com/design/ncv8876-automotive-start-stop-boost-controller, which shows the performance of the device in normal operation. But in this design, the inductor element proves inadequate for boost operation under a heavy load condition. Inductance collapse, caused by core saturation, could lead to damaging peak current levels in multiple electronic components, were it not for the “hiccup-mode” overcurrent protection feature of the NCV8876. </p><p>Simulation results show that the boost output voltage (dark blue waveform) falls to approximately 5V when the battery voltage (orange waveform) drops to 6V. This is in contrast to the nominal circuit operation, in which the NCV8876 would enter boost control mode and maintains a 6.8V boost output level. But because of the low drop-out voltage of the NCV59302 VLDO, the 5V regulated output voltage is only slightly reduced. The current through the 2.3 Ohm load resistor is maintained at just under 2.2A throughout the entire operation.</p><p>While this load level is within the current rating of the inductor (2.3A RMS Max.), it is approaching the saturation inductance “cliff” for this traditional (i.e. non-soft-saturating) part. So when the NCV8876 activates boost control, it switches on the Power MOSFET briefly, effectively grounding the low side of the inductor through the small current sense resistance (0.03 Ohms). With the nominal 3.3uH inductance value, this would result in a slow current build-up (V/L = di/dt = 6V/3.3uH = 1.8A/us). But in this case the inductance collapses with further current increase, and the di/dt value becomes very large. The inductor current spikes to well over 10A (light blue waveform), and the corresponding inductance crashes to a small fraction of its nominal value (green waveform).</p><p>The current spikes could have gone much higher, possibly resulting in damage to the NVGS3130 Power MOSFET, which has a rated pulse current maximum of 19A. In the zoomed-in view, the magenta waveform shows the Ids current rising, slowly at first while the inductance is intact, but then rapidly rising to over 11A as the inductance collapses, all in just 100ns! Fortunately the gate voltage (brown waveform) is cut off to prevent further current rise. This is thanks to the overcurrent protection feature of the NCV8876. When an overcurrent condition is detected, the device immediately goes into “hiccup-mode”, in which the gate drive is turned off and remains off for a count of 1024 clock cycles. After the mandatory hiccup period, the NCV8876 reattempts boost operation, but with continued overcurrent monitoring. Note that the current spikes are repeated with just over a 2ms period, because the clock is programmed to just over 2 us period (450 kHz switching frequency) in this design.</p><p>To learn more about the capabilities of the ON Semiconductor NCV8876, click here: http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>To learn more about the benefits of Coilcraft's molded core soft saturation technology for reducing problems with current spikes, see page 4 of this document: http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> About text formats Tags Start-StopboostSoft SaturationNCV8876overcurrenthiccup mode Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/97141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/97141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/97141 NCV887601BSTGEVB - Evaluation Board Test DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/96141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/96141 Pagination Previous page ‹‹ Page 2 Next page ››
NCV887601BSTGEVB - Evaluation Board Test YutoAmanoDesigner123151 × YutoAmano Member for 6 years 11 months 1 designs 1 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby YutoAmano × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/159451"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/159451"></iframe> Share a Link Copy URL https://explore.partquest.com/node/159451 NCV8876 - Automotive Start-Stop Boost Controller GaryWDesigner121191 × GaryW Member for 6 years 11 months 1 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby GaryW × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/156456"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/156456"></iframe> Share a Link Copy URL https://explore.partquest.com/node/156456 NCV8876 - Automotive Start-Stop Boost Controller AlfonsoDesigner110486 × Alfonso Member for 7 years 1 month 5 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Alfonso × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/141111"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/141111"></iframe> Share a Link Copy URL https://explore.partquest.com/node/141111 NCV8876 - Overcurrent Protection DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This example demonstrates the overcurrent protection capabilities of the ON Semiconductor NCV8876. It complements the design: https://www.systemvision.com/design/ncv8876-automotive-start-stop-boost-controller, which shows the performance of the device in normal operation. But in this design, the inductor element proves inadequate for boost operation under a heavy load condition. Inductance collapse, caused by core saturation, could lead to damaging peak current levels in multiple electronic components, were it not for the “hiccup-mode” overcurrent protection feature of the NCV8876. </p><p>Simulation results show that the boost output voltage (dark blue waveform) falls to approximately 5V when the battery voltage (orange waveform) drops to 6V. This is in contrast to the nominal circuit operation, in which the NCV8876 would enter boost control mode and maintains a 6.8V boost output level. But because of the low drop-out voltage of the NCV59302 VLDO, the 5V regulated output voltage is only slightly reduced. The current through the 2.3 Ohm load resistor is maintained at just under 2.2A throughout the entire operation.</p><p>While this load level is within the current rating of the inductor (2.3A RMS Max.), it is approaching the saturation inductance “cliff” for this traditional (i.e. non-soft-saturating) part. So when the NCV8876 activates boost control, it switches on the Power MOSFET briefly, effectively grounding the low side of the inductor through the small current sense resistance (0.03 Ohms). With the nominal 3.3uH inductance value, this would result in a slow current build-up (V/L = di/dt = 6V/3.3uH = 1.8A/us). But in this case the inductance collapses with further current increase, and the di/dt value becomes very large. The inductor current spikes to well over 10A (light blue waveform), and the corresponding inductance crashes to a small fraction of its nominal value (green waveform).</p><p>The current spikes could have gone much higher, possibly resulting in damage to the NVGS3130 Power MOSFET, which has a rated pulse current maximum of 19A. In the zoomed-in view, the magenta waveform shows the Ids current rising, slowly at first while the inductance is intact, but then rapidly rising to over 11A as the inductance collapses, all in just 100ns! Fortunately the gate voltage (brown waveform) is cut off to prevent further current rise. This is thanks to the overcurrent protection feature of the NCV8876. When an overcurrent condition is detected, the device immediately goes into “hiccup-mode”, in which the gate drive is turned off and remains off for a count of 1024 clock cycles. After the mandatory hiccup period, the NCV8876 reattempts boost operation, but with continued overcurrent monitoring. Note that the current spikes are repeated with just over a 2ms period, because the clock is programmed to just over 2 us period (450 kHz switching frequency) in this design.</p><p>To learn more about the capabilities of the ON Semiconductor NCV8876, click here: http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>To learn more about the benefits of Coilcraft's molded core soft saturation technology for reducing problems with current spikes, see page 4 of this document: http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> About text formats Tags Start-StopboostSoft SaturationNCV8876overcurrenthiccup mode Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/97141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/97141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/97141 NCV887601BSTGEVB - Evaluation Board Test DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/96141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/96141 Pagination Previous page ‹‹ Page 2 Next page ››
NCV8876 - Automotive Start-Stop Boost Controller GaryWDesigner121191 × GaryW Member for 6 years 11 months 1 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby GaryW × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/156456"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/156456"></iframe> Share a Link Copy URL https://explore.partquest.com/node/156456 NCV8876 - Automotive Start-Stop Boost Controller AlfonsoDesigner110486 × Alfonso Member for 7 years 1 month 5 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Alfonso × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/141111"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/141111"></iframe> Share a Link Copy URL https://explore.partquest.com/node/141111 NCV8876 - Overcurrent Protection DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This example demonstrates the overcurrent protection capabilities of the ON Semiconductor NCV8876. It complements the design: https://www.systemvision.com/design/ncv8876-automotive-start-stop-boost-controller, which shows the performance of the device in normal operation. But in this design, the inductor element proves inadequate for boost operation under a heavy load condition. Inductance collapse, caused by core saturation, could lead to damaging peak current levels in multiple electronic components, were it not for the “hiccup-mode” overcurrent protection feature of the NCV8876. </p><p>Simulation results show that the boost output voltage (dark blue waveform) falls to approximately 5V when the battery voltage (orange waveform) drops to 6V. This is in contrast to the nominal circuit operation, in which the NCV8876 would enter boost control mode and maintains a 6.8V boost output level. But because of the low drop-out voltage of the NCV59302 VLDO, the 5V regulated output voltage is only slightly reduced. The current through the 2.3 Ohm load resistor is maintained at just under 2.2A throughout the entire operation.</p><p>While this load level is within the current rating of the inductor (2.3A RMS Max.), it is approaching the saturation inductance “cliff” for this traditional (i.e. non-soft-saturating) part. So when the NCV8876 activates boost control, it switches on the Power MOSFET briefly, effectively grounding the low side of the inductor through the small current sense resistance (0.03 Ohms). With the nominal 3.3uH inductance value, this would result in a slow current build-up (V/L = di/dt = 6V/3.3uH = 1.8A/us). But in this case the inductance collapses with further current increase, and the di/dt value becomes very large. The inductor current spikes to well over 10A (light blue waveform), and the corresponding inductance crashes to a small fraction of its nominal value (green waveform).</p><p>The current spikes could have gone much higher, possibly resulting in damage to the NVGS3130 Power MOSFET, which has a rated pulse current maximum of 19A. In the zoomed-in view, the magenta waveform shows the Ids current rising, slowly at first while the inductance is intact, but then rapidly rising to over 11A as the inductance collapses, all in just 100ns! Fortunately the gate voltage (brown waveform) is cut off to prevent further current rise. This is thanks to the overcurrent protection feature of the NCV8876. When an overcurrent condition is detected, the device immediately goes into “hiccup-mode”, in which the gate drive is turned off and remains off for a count of 1024 clock cycles. After the mandatory hiccup period, the NCV8876 reattempts boost operation, but with continued overcurrent monitoring. Note that the current spikes are repeated with just over a 2ms period, because the clock is programmed to just over 2 us period (450 kHz switching frequency) in this design.</p><p>To learn more about the capabilities of the ON Semiconductor NCV8876, click here: http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>To learn more about the benefits of Coilcraft's molded core soft saturation technology for reducing problems with current spikes, see page 4 of this document: http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> About text formats Tags Start-StopboostSoft SaturationNCV8876overcurrenthiccup mode Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/97141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/97141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/97141 NCV887601BSTGEVB - Evaluation Board Test DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/96141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/96141 Pagination Previous page ‹‹ Page 2 Next page ››
NCV8876 - Automotive Start-Stop Boost Controller AlfonsoDesigner110486 × Alfonso Member for 7 years 1 month 5 designs 1 groups Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p><p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.</p><p>Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).</p><p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p><p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p><p>The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Alfonso × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/141111"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/141111"></iframe> Share a Link Copy URL https://explore.partquest.com/node/141111 NCV8876 - Overcurrent Protection DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This example demonstrates the overcurrent protection capabilities of the ON Semiconductor NCV8876. It complements the design: https://www.systemvision.com/design/ncv8876-automotive-start-stop-boost-controller, which shows the performance of the device in normal operation. But in this design, the inductor element proves inadequate for boost operation under a heavy load condition. Inductance collapse, caused by core saturation, could lead to damaging peak current levels in multiple electronic components, were it not for the “hiccup-mode” overcurrent protection feature of the NCV8876. </p><p>Simulation results show that the boost output voltage (dark blue waveform) falls to approximately 5V when the battery voltage (orange waveform) drops to 6V. This is in contrast to the nominal circuit operation, in which the NCV8876 would enter boost control mode and maintains a 6.8V boost output level. But because of the low drop-out voltage of the NCV59302 VLDO, the 5V regulated output voltage is only slightly reduced. The current through the 2.3 Ohm load resistor is maintained at just under 2.2A throughout the entire operation.</p><p>While this load level is within the current rating of the inductor (2.3A RMS Max.), it is approaching the saturation inductance “cliff” for this traditional (i.e. non-soft-saturating) part. So when the NCV8876 activates boost control, it switches on the Power MOSFET briefly, effectively grounding the low side of the inductor through the small current sense resistance (0.03 Ohms). With the nominal 3.3uH inductance value, this would result in a slow current build-up (V/L = di/dt = 6V/3.3uH = 1.8A/us). But in this case the inductance collapses with further current increase, and the di/dt value becomes very large. The inductor current spikes to well over 10A (light blue waveform), and the corresponding inductance crashes to a small fraction of its nominal value (green waveform).</p><p>The current spikes could have gone much higher, possibly resulting in damage to the NVGS3130 Power MOSFET, which has a rated pulse current maximum of 19A. In the zoomed-in view, the magenta waveform shows the Ids current rising, slowly at first while the inductance is intact, but then rapidly rising to over 11A as the inductance collapses, all in just 100ns! Fortunately the gate voltage (brown waveform) is cut off to prevent further current rise. This is thanks to the overcurrent protection feature of the NCV8876. When an overcurrent condition is detected, the device immediately goes into “hiccup-mode”, in which the gate drive is turned off and remains off for a count of 1024 clock cycles. After the mandatory hiccup period, the NCV8876 reattempts boost operation, but with continued overcurrent monitoring. Note that the current spikes are repeated with just over a 2ms period, because the clock is programmed to just over 2 us period (450 kHz switching frequency) in this design.</p><p>To learn more about the capabilities of the ON Semiconductor NCV8876, click here: http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>To learn more about the benefits of Coilcraft's molded core soft saturation technology for reducing problems with current spikes, see page 4 of this document: http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> About text formats Tags Start-StopboostSoft SaturationNCV8876overcurrenthiccup mode Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/97141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/97141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/97141 NCV887601BSTGEVB - Evaluation Board Test DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/96141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/96141 Pagination Previous page ‹‹ Page 2 Next page ››
NCV8876 - Overcurrent Protection DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This example demonstrates the overcurrent protection capabilities of the ON Semiconductor NCV8876. It complements the design: https://www.systemvision.com/design/ncv8876-automotive-start-stop-boost-controller, which shows the performance of the device in normal operation. But in this design, the inductor element proves inadequate for boost operation under a heavy load condition. Inductance collapse, caused by core saturation, could lead to damaging peak current levels in multiple electronic components, were it not for the “hiccup-mode” overcurrent protection feature of the NCV8876. </p><p>Simulation results show that the boost output voltage (dark blue waveform) falls to approximately 5V when the battery voltage (orange waveform) drops to 6V. This is in contrast to the nominal circuit operation, in which the NCV8876 would enter boost control mode and maintains a 6.8V boost output level. But because of the low drop-out voltage of the NCV59302 VLDO, the 5V regulated output voltage is only slightly reduced. The current through the 2.3 Ohm load resistor is maintained at just under 2.2A throughout the entire operation.</p><p>While this load level is within the current rating of the inductor (2.3A RMS Max.), it is approaching the saturation inductance “cliff” for this traditional (i.e. non-soft-saturating) part. So when the NCV8876 activates boost control, it switches on the Power MOSFET briefly, effectively grounding the low side of the inductor through the small current sense resistance (0.03 Ohms). With the nominal 3.3uH inductance value, this would result in a slow current build-up (V/L = di/dt = 6V/3.3uH = 1.8A/us). But in this case the inductance collapses with further current increase, and the di/dt value becomes very large. The inductor current spikes to well over 10A (light blue waveform), and the corresponding inductance crashes to a small fraction of its nominal value (green waveform).</p><p>The current spikes could have gone much higher, possibly resulting in damage to the NVGS3130 Power MOSFET, which has a rated pulse current maximum of 19A. In the zoomed-in view, the magenta waveform shows the Ids current rising, slowly at first while the inductance is intact, but then rapidly rising to over 11A as the inductance collapses, all in just 100ns! Fortunately the gate voltage (brown waveform) is cut off to prevent further current rise. This is thanks to the overcurrent protection feature of the NCV8876. When an overcurrent condition is detected, the device immediately goes into “hiccup-mode”, in which the gate drive is turned off and remains off for a count of 1024 clock cycles. After the mandatory hiccup period, the NCV8876 reattempts boost operation, but with continued overcurrent monitoring. Note that the current spikes are repeated with just over a 2ms period, because the clock is programmed to just over 2 us period (450 kHz switching frequency) in this design.</p><p>To learn more about the capabilities of the ON Semiconductor NCV8876, click here: http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p><p>To learn more about the benefits of Coilcraft's molded core soft saturation technology for reducing problems with current spikes, see page 4 of this document: http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> About text formats Tags Start-StopboostSoft SaturationNCV8876overcurrenthiccup mode Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/97141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/97141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/97141 NCV887601BSTGEVB - Evaluation Board Test DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/96141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/96141 Pagination Previous page ‹‹ Page 2 Next page ››
NCV887601BSTGEVB - Evaluation Board Test DarrellDesigner10 × Darrell Member for 10 years 4 months 624 designs 10 groups Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None - What's this? Design Titleby Darrell × Embed Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/embed-design/96141"></iframe> Embed Live Design Copy Embed Code <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Share a Link Copy URL https://explore.partquest.com/node/96141 Pagination Previous page ‹‹ Page 2 Next page ››