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Totem-Pole Bridgeless PFC (Diode Rectification)


It consists of an inductor for boosting, a switch with a totem pole connection for switching at higher frequencies, and a switching diode for lower frequencies. 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 FRDs for reduced costs
- Efficiency higher than 98.5%
- Frequency from 48 to 150 kHz



Key Products

Product CategoryProduct familyProduct NumberFeature
Transistor750V SiC MOSFETSCT4XXXDx series NEWThe latest SiC MOSFET device. Enhanced low on-resistance enable best in class performance. It supports 750 V withstand voltage, ensuring a higher operating margin than conventional products, and can be used safely.
650V SiC MOSFETSCT3xxxAx seriesTrench-gate SiC MOSFET with low on-resistance (50% reduction) compared to conventional products.
Diodes650V Si FRDRFS seriesLower Vf than RSV series, but ultra fast switching capability
RFL seriesImprove fast switching capability than RFN series.
Diodes600 V Si FRDRFN series / RFNL SeriesThe low Vf type FRD is suitable for rectification, and achieves low loss even at high current.
Gate DriverBM60212FV-CHigh side/low side driver with high withstand voltage (1200V). A mirror clamp function and under voltage lockout function (UVLO) are built in.
BM61X4XRFV1ch configuration, 3,750Vrms isolated type Gate Driver, can be used for switching devices with current source pins.


A-011 : Totem-Pole Bridgeless PFC (Diode Rectification)

Related Topologies

Boost PFC

Interleaved Boost PFC

Totem-Pole Bridgeless PFC (Synchronous FETs)