4 Summary

The affordable cost of mild hybrid designs and their ability to retrofit existing ICE drivetrains is accelerating the demand for power electronics in electric mobility applications. A low- to high-voltage-side isolating power supply in mHEV powertrain applications increases performance, robustness, redundancy and fault tolerance. A testament to its excellent regulation, multi-output capability, EMI compliance, small form factor and low component count, the auxless PSR flyback converter finds increasing relevance in mHEV electric powertrain architectures. Magnetic sensing of the output voltage eliminates the optocoupler, which eliminates a component that crosses the isolation barrier and resulting in a cost-effective solution with higher reliability.