Phase-Shift Full Bridge (PSFB) AC-DC Power Supply Basic ...

(133A) is shared by two phases equally, so 67A is applied per phase. Suppose that six parallel MOSFETs are used per phase to accommodate a larg e current and conduction loss , then each MOSFET conducts an average of roughly 11A, so a MOSFET with a current rating of 25A or higher is necessary. ................
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