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Totem-Pole Bridgeless PFC (Synchronous FETs)


This is a Totem-Pole Bridgeless PFC with MOSFETs on the low-frequency side, which can achieve even higher efficiency and bi-directional operation by changing the control method.
The switch acts as a boost converter when the input voltage is positive and negative half cycle respectively. The totem pole structure solves the recovery loss problem of rectifier diodes.


- Single stage PFC
- Low frequency leg with SJ MOSFETS for higher performance
- Efficiency higher than 99%
- Frequency from 48 to 150 kHz



Key Products

Product Category Product family Product Number Feature
Transistor 650V SiC MOS SCT3xxxAx supports switching with a fast body diode
Low frequency Leg SJ MOSFET R60xxKN Series 600V/650V SJ MOSFET
SJ MOSFET supports lower conduction losses by synchr. Rectification vs. diodes.
R65xxKN Series
Gate Driver BM60212FV-C Half-bridge driver
BM61S41RFV-C 1Ch Isolated driver for high frequency leg


A-010 : Totem-Pole Bridgeless PFC (Synchronous FETs)

Related Topologies

Boost PFC

Interleaved PFC

Totem-Pole Bridgeless PFC (Diode Rectification)