Electro-Thermal Design Trade-offs for a Linear LED Driver Ben_2Designer135501 × Ben_2 Member for 6 years 9 months 61 designs 2 groups Member of the PartQuest Explore team. https://explore.partquest.com/node/234846 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/234846"></iframe> Title Description <p>This design example demonstrates electro-thermal trade-off analysis for power dissipating circuits. The design includes a 3.2V linear regulator that drives 3 high-current LEDs (350 mA each). The maximum allowed input voltage of the regulator (10V) is less than the battery voltage (12.6V). So a voltage reducing NPN transistor, with a zener diode to control its base voltage, is used to protect the regulator input.</p><p>To explore the design trade-offs, the user can change the zener voltage and re-run the simulation. This will result in not only a change to the electrical voltage split across the transistor and regulator, but also a corresponding change to the power dissipation in those two components. The user can also change the values of the thermal resistances (from junction to ambient) of those components, to identify the heat-sink or other thermal mitigation required to meet all the design constraints of this circuit.</p> About text formats Tags electro-thermalTunable Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
