April 20, 2021

    Listen to this webinar to discover how the breakthrough performance of UnitedSiC 750V Gen 4 SiC FETs (https://info.unitedsic.com/gen4) enables a simple design of a highly efficient Totem-pole PFC. Efficiency measurements on the developed 3.6kW unit will demonstrate a 99.3% efficiency rating. Insight into the losses is provided by the UnitedSiC FET-Jet Calculator(TM) (https://info.unitedsic.com/fet-jet) on-line tool, which are shown to match the actual measurements quite well. Finally, we discuss how the high efficiency of SiC FETs allows further BOM cost reduction for Totem-pole PFC.


    • Introduction
    • Benefits of TPPFC
    • CCM vs CrM
    • Performance of Gen 4 SiC FETs
    • Measured efficiency (SR on slow leg)
    • Calculation of device loss using FET-Jet Calculator
    • More cost-effective design (diode on slow leg)
    • Summary
    • Design support