Abstract
This article explains how the breakthrough performance of UnitedSiC 750 V Gen 4 SiC FETs enables a simple design of highly efficient totem-pole PFC. Efficiency measurements on the developed unit will demonstrate a 99.3% efficiency rating. Insight into the losses is provided by the new UnitedSiC FET-Jet calculator on-line tool, which are shown to match the actual measurements quite well. Finally, it discusses how the high efficiency of SiC FETs allows further BOM cost reduction for totem-pole PFC.
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