Copy of TDFS Loop Stability for Step-Down DC to DC (Buck) Converter - Switching - on Tue, 10/20/2020 - 13:58 anita.w.zhouDesigner234756 × anita.w.zhou Member for 3 years 7 months 57 designs 1 groups Add a bio to your profile to share information about yourself with other SystemVision users. https://explore.partquest.com/node/363134 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/363134"></iframe> Title Description <p>This example demonstrates the TDFS (Time Domain Frequency Sweep) Loop Stability Instrument Model. It is used to compute the open-loop transfer function of an operating (closed-loop) switching power converter. There is no need for state-average or continuous equivalent models for the modulator section of the design, as normally needed for frequency-domain (or "AC") analysis. Rather, the actual circuit component models can be used directly, because the open-loop transfer function is computed from time-domain simulation results.</p> <p>In this case, the converter is operating at 200kHz switching frequency, and is converting the 12V DC input to a regulated 5V output, while supplying a 5A current to the 1 Ohm load resistor. The TDFS measurement instrument indicates that the open-loop gain crossover frequency is at 26 kHz, and the phase margin is just under 60 degrees. This verifies that the opamp-based lead-lag compensator is providing adequate stability margin under these operating conditions.</p> <p>Note that the TDFS instrument model characterizes the open loop transfer function by injecting a small sinusoidal stimulus signal in series with the loop, and then measures the complex ratio of the return signal to the injected signal, is described in:</p> <p>D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries.</p> <p>The companion example, "Step-Down (Buck) DC to DC Converter - Switching", shows the line and load transient response of this converter design. Another companion example, "Step-Down (Buck) DC to DC Converter - Continuous", uses a state-average model of the switching (or modulator) section of the converter, so it supports traditional "AC" or frequency-domain analysis.</p> About text formats Tags Buck ConverterOp-Amp Lead-Lag CompensatorSwitching ConverterPEG127KA3110Q Electrolytic CapacitorMC33272A OP-AMPXAL6060-223 InductorNRVTS560EMFS Schottky Power RectifierStep-Down Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
TDFS Loop Stability for Step-Down DC to DC (Buck) Converter - Switching TakayukiAtagoDesigner223968 × TakayukiAtago Member for 4 years 6 months 6 designs 1 groups Add a bio to your profile to share information about yourself with other SystemVision users. https://explore.partquest.com/node/272489 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/272489"></iframe> Title Description <p>This example demonstrates the TDFS (Time Domain Frequency Sweep) Loop Stability Instrument Model. It is used to compute the open-loop transfer function of an operating (closed-loop) switching power converter. There is no need for state-average or continuous equivalent models for the modulator section of the design, as normally needed for frequency-domain (or "AC") analysis. Rather, the actual circuit component models can be used directly, because the open-loop transfer function is computed from time-domain simulation results.</p><p>In this case, the converter is operating at 200kHz switching frequency, and is converting the 12V DC input to a regulated 5V output, while supplying a 5A current to the 1 Ohm load resistor. The TDFS measurement instrument indicates that the open-loop gain crossover frequency is at 26 kHz, and the phase margin is just under 60 degrees. This verifies that the opamp-based lead-lag compensator is providing adequate stability margin under these operating conditions.</p><p>Note that the TDFS instrument model characterizes the open loop transfer function by injecting a small sinusoidal stimulus signal in series with the loop, and then measures the complex ratio of the return signal to the injected signal, is described in:</p><p>D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries.</p><p>The companion example, "Step-Down (Buck) DC to DC Converter - Switching", shows the line and load transient response of this converter design. Another companion example, "Step-Down (Buck) DC to DC Converter - Continuous", uses a state-average model of the switching (or modulator) section of the converter, so it supports traditional "AC" or frequency-domain analysis.</p> About text formats Tags Buck ConverterOp-Amp Lead-Lag CompensatorSwitching ConverterPEG127KA3110Q Electrolytic CapacitorMC33272A OP-AMPXAL6060-223 InductorNRVTS560EMFS Schottky Power RectifierStep-Down Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Buck Converter with Vorperian Switch v2.1 NormDesigner43361 × Norm Member for 8 years 328 designs 2 groups https://explore.partquest.com/node/263418 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/263418"></iframe> Title Description <p>Mike Donnelly's buck converter example configured with an averaged switch as per Vatche Vorperian to be extended to EMI frequencies.</p> About text formats Tags Buck ConverterOp-Amp Lead-Lag CompensatorSwitching ConverterPEG127KA3110Q Electrolytic CapacitorMC33272A OP-AMPXAL6060-223 InductorNRVTS560EMFS Schottky Power RectifierStep-Down Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Norm's aliasing demo - Mike's topology NormDesigner43361 × Norm Member for 8 years 328 designs 2 groups https://explore.partquest.com/node/256149 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/256149"></iframe> Title Description <p>This example demonstrates the TDFS (Time Domain Frequency Sweep) Loop Stability Instrument Model. It is used to compute the open-loop transfer function of an operating (closed-loop) switching power converter. There is no need for state-average or continuous equivalent models for the modulator section of the design, as normally needed for frequency-domain (or "AC") analysis. Rather, the actual circuit component models can be used directly, because the open-loop transfer function is computed from time-domain simulation results.</p><p>In this case, the converter is operating at 200kHz switching frequency, and is converting the 12V DC input to a regulated 5V output, while supplying a 5A current to the 1 Ohm load resistor. The TDFS measurement instrument indicates that the open-loop gain crossover frequency is at 26 kHz, and the phase margin is just under 60 degrees. This verifies that the opamp-based lead-lag compensator is providing adequate stability margin under these operating conditions.</p><p>Note that the TDFS instrument model characterizes the open loop transfer function by injecting a small sinusoidal stimulus signal in series with the loop, and then measures the complex ratio of the return signal to the injected signal, is described in:</p><p>D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries.</p><p>The companion example, "Step-Down (Buck) DC to DC Converter - Switching", shows the line and load transient response of this converter design. Another companion example, "Step-Down (Buck) DC to DC Converter - Continuous", uses a state-average model of the switching (or modulator) section of the converter, so it supports traditional "AC" or frequency-domain analysis.</p> About text formats Tags Buck ConverterOp-Amp Lead-Lag CompensatorSwitching ConverterPEG127KA3110Q Electrolytic CapacitorMC33272A OP-AMPXAL6060-223 InductorNRVTS560EMFS Schottky Power RectifierStep-Down Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
SMSSA Theory - Test rev 2 Baseline NormDesigner43361 × Norm Member for 8 years 328 designs 2 groups https://explore.partquest.com/node/254142 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/254142"></iframe> Title Description <p>This example demonstrates the TDFS (Time Domain Frequency Sweep) Loop Stability Instrument Model. It is used to compute the open-loop transfer function of an operating (closed-loop) switching power converter. There is no need for state-average or continuous equivalent models for the modulator section of the design, as normally needed for frequency-domain (or "AC") analysis. Rather, the actual circuit component models can be used directly, because the open-loop transfer function is computed from time-domain simulation results.</p><p>In this case, the converter is operating at 200kHz switching frequency, and is converting the 12V DC input to a regulated 5V output, while supplying a 5A current to the 1 Ohm load resistor. The TDFS measurement instrument indicates that the open-loop gain crossover frequency is at 26 kHz, and the phase margin is just under 60 degrees. This verifies that the opamp-based lead-lag compensator is providing adequate stability margin under these operating conditions.</p><p>Note that the TDFS instrument model characterizes the open loop transfer function by injecting a small sinusoidal stimulus signal in series with the loop, and then measures the complex ratio of the return signal to the injected signal, is described in:</p><p>D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries.</p><p>The companion example, "Step-Down (Buck) DC to DC Converter - Switching", shows the line and load transient response of this converter design. Another companion example, "Step-Down (Buck) DC to DC Converter - Continuous", uses a state-average model of the switching (or modulator) section of the converter, so it supports traditional "AC" or frequency-domain analysis.</p> About text formats Tags Buck ConverterOp-Amp Lead-Lag CompensatorSwitching ConverterPEG127KA3110Q Electrolytic CapacitorMC33272A OP-AMPXAL6060-223 InductorNRVTS560EMFS Schottky Power RectifierStep-Down Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
SMSSA Theory - Test rev 2 NormDesigner43361 × Norm Member for 8 years 328 designs 2 groups https://explore.partquest.com/node/254111 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/254111"></iframe> Title Description <p>This example demonstrates the TDFS (Time Domain Frequency Sweep) Loop Stability Instrument Model. It is used to compute the open-loop transfer function of an operating (closed-loop) switching power converter. There is no need for state-average or continuous equivalent models for the modulator section of the design, as normally needed for frequency-domain (or "AC") analysis. Rather, the actual circuit component models can be used directly, because the open-loop transfer function is computed from time-domain simulation results.</p><p>In this case, the converter is operating at 200kHz switching frequency, and is converting the 12V DC input to a regulated 5V output, while supplying a 5A current to the 1 Ohm load resistor. The TDFS measurement instrument indicates that the open-loop gain crossover frequency is at 26 kHz, and the phase margin is just under 60 degrees. This verifies that the opamp-based lead-lag compensator is providing adequate stability margin under these operating conditions.</p><p>Note that the TDFS instrument model characterizes the open loop transfer function by injecting a small sinusoidal stimulus signal in series with the loop, and then measures the complex ratio of the return signal to the injected signal, is described in:</p><p>D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries.</p><p>The companion example, "Step-Down (Buck) DC to DC Converter - Switching", shows the line and load transient response of this converter design. Another companion example, "Step-Down (Buck) DC to DC Converter - Continuous", uses a state-average model of the switching (or modulator) section of the converter, so it supports traditional "AC" or frequency-domain analysis.</p> About text formats Tags Buck ConverterOp-Amp Lead-Lag CompensatorSwitching ConverterPEG127KA3110Q Electrolytic CapacitorMC33272A OP-AMPXAL6060-223 InductorNRVTS560EMFS Schottky Power RectifierStep-Down Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
SMSSA Theory Test NormDesigner43361 × Norm Member for 8 years 328 designs 2 groups https://explore.partquest.com/node/254019 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/254019"></iframe> Title Description <p>This example demonstrates the TDFS (Time Domain Frequency Sweep) Loop Stability Instrument Model. It is used to compute the open-loop transfer function of an operating (closed-loop) switching power converter. There is no need for state-average or continuous equivalent models for the modulator section of the design, as normally needed for frequency-domain (or "AC") analysis. Rather, the actual circuit component models can be used directly, because the open-loop transfer function is computed from time-domain simulation results.</p><p>In this case, the converter is operating at 200kHz switching frequency, and is converting the 12V DC input to a regulated 5V output, while supplying a 5A current to the 1 Ohm load resistor. The TDFS measurement instrument indicates that the open-loop gain crossover frequency is at 26 kHz, and the phase margin is just under 60 degrees. This verifies that the opamp-based lead-lag compensator is providing adequate stability margin under these operating conditions.</p><p>Note that the TDFS instrument model characterizes the open loop transfer function by injecting a small sinusoidal stimulus signal in series with the loop, and then measures the complex ratio of the return signal to the injected signal, is described in:</p><p>D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries.</p><p>The companion example, "Step-Down (Buck) DC to DC Converter - Switching", shows the line and load transient response of this converter design. Another companion example, "Step-Down (Buck) DC to DC Converter - Continuous", uses a state-average model of the switching (or modulator) section of the converter, so it supports traditional "AC" or frequency-domain analysis.</p> About text formats Tags Buck ConverterOp-Amp Lead-Lag CompensatorSwitching ConverterPEG127KA3110Q Electrolytic CapacitorMC33272A OP-AMPXAL6060-223 InductorNRVTS560EMFS Schottky Power RectifierStep-Down Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Switch Mode Small Signal Analysis - Filter Bypassed NormDesigner43361 × Norm Member for 8 years 328 designs 2 groups https://explore.partquest.com/node/253748 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/253748"></iframe> Title Description <p>This example demonstrates the TDFS (Time Domain Frequency Sweep) Loop Stability Instrument Model. It is used to compute the open-loop transfer function of an operating (closed-loop) switching power converter. There is no need for state-average or continuous equivalent models for the modulator section of the design, as normally needed for frequency-domain (or "AC") analysis. Rather, the actual circuit component models can be used directly, because the open-loop transfer function is computed from time-domain simulation results.</p><p>In this case, the converter is operating at 200kHz switching frequency, and is converting the 12V DC input to a regulated 5V output, while supplying a 5A current to the 1 Ohm load resistor. The TDFS measurement instrument indicates that the open-loop gain crossover frequency is at 26 kHz, and the phase margin is just under 60 degrees. This verifies that the opamp-based lead-lag compensator is providing adequate stability margin under these operating conditions.</p><p>Note that the TDFS instrument model characterizes the open loop transfer function by injecting a small sinusoidal stimulus signal in series with the loop, and then measures the complex ratio of the return signal to the injected signal, is described in:</p><p>D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries.</p><p>The companion example, "Step-Down (Buck) DC to DC Converter - Switching", shows the line and load transient response of this converter design. Another companion example, "Step-Down (Buck) DC to DC Converter - Continuous", uses a state-average model of the switching (or modulator) section of the converter, so it supports traditional "AC" or frequency-domain analysis.</p> About text formats Tags Buck ConverterOp-Amp Lead-Lag CompensatorSwitching ConverterPEG127KA3110Q Electrolytic CapacitorMC33272A OP-AMPXAL6060-223 InductorNRVTS560EMFS Schottky Power RectifierStep-Down Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Switch Mode Small Signal Analysis - ripple extraction NormDesigner43361 × Norm Member for 8 years 328 designs 2 groups https://explore.partquest.com/node/253506 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/253506"></iframe> Title Description <p>This example demonstrates the TDFS (Time Domain Frequency Sweep) Loop Stability Instrument Model. It is used to compute the open-loop transfer function of an operating (closed-loop) switching power converter. There is no need for state-average or continuous equivalent models for the modulator section of the design, as normally needed for frequency-domain (or "AC") analysis. Rather, the actual circuit component models can be used directly, because the open-loop transfer function is computed from time-domain simulation results.</p><p>In this case, the converter is operating at 200kHz switching frequency, and is converting the 12V DC input to a regulated 5V output, while supplying a 5A current to the 1 Ohm load resistor. The TDFS measurement instrument indicates that the open-loop gain crossover frequency is at 26 kHz, and the phase margin is just under 60 degrees. This verifies that the opamp-based lead-lag compensator is providing adequate stability margin under these operating conditions.</p><p>Note that the TDFS instrument model characterizes the open loop transfer function by injecting a small sinusoidal stimulus signal in series with the loop, and then measures the complex ratio of the return signal to the injected signal, is described in:</p><p>D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries.</p><p>The companion example, "Step-Down (Buck) DC to DC Converter - Switching", shows the line and load transient response of this converter design. Another companion example, "Step-Down (Buck) DC to DC Converter - Continuous", uses a state-average model of the switching (or modulator) section of the converter, so it supports traditional "AC" or frequency-domain analysis.</p> About text formats Tags Buck ConverterOp-Amp Lead-Lag CompensatorSwitching ConverterPEG127KA3110Q Electrolytic CapacitorMC33272A OP-AMPXAL6060-223 InductorNRVTS560EMFS Schottky Power RectifierStep-Down Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Norm's TDFS Exercise - window averaging topology rev2 NormDesigner43361 × Norm Member for 8 years 328 designs 2 groups https://explore.partquest.com/node/252904 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/252904"></iframe> Title Description <p>This example demonstrates the TDFS (Time Domain Frequency Sweep) Loop Stability Instrument Model. It is used to compute the open-loop transfer function of an operating (closed-loop) switching power converter. There is no need for state-average or continuous equivalent models for the modulator section of the design, as normally needed for frequency-domain (or "AC") analysis. Rather, the actual circuit component models can be used directly, because the open-loop transfer function is computed from time-domain simulation results.</p><p>In this case, the converter is operating at 200kHz switching frequency, and is converting the 12V DC input to a regulated 5V output, while supplying a 5A current to the 1 Ohm load resistor. The TDFS measurement instrument indicates that the open-loop gain crossover frequency is at 26 kHz, and the phase margin is just under 60 degrees. This verifies that the opamp-based lead-lag compensator is providing adequate stability margin under these operating conditions.</p><p>Note that the TDFS instrument model characterizes the open loop transfer function by injecting a small sinusoidal stimulus signal in series with the loop, and then measures the complex ratio of the return signal to the injected signal, is described in:</p><p>D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries.</p><p>The companion example, "Step-Down (Buck) DC to DC Converter - Switching", shows the line and load transient response of this converter design. Another companion example, "Step-Down (Buck) DC to DC Converter - Continuous", uses a state-average model of the switching (or modulator) section of the converter, so it supports traditional "AC" or frequency-domain analysis.</p> About text formats Tags Buck ConverterOp-Amp Lead-Lag CompensatorSwitching ConverterPEG127KA3110Q Electrolytic CapacitorMC33272A OP-AMPXAL6060-223 InductorNRVTS560EMFS Schottky Power RectifierStep-Down Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -