Totem-Pole Bridgeless PFC (Synchronous FETs)
Description
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.
Overview
- Single stage PFC
- Low frequency leg with SJ MOSFETS for higher performance
- Efficiency higher than 99%
- Frequency from 48 to 150 kHz
Circuit
Key Products
| Product Category | Product family | Product Number | Feature |
|---|---|---|---|
| Transistor | 750V SiC MOSFET | SCT4XXXDx series NEW | The 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 MOSFET | SCT3xxxAx series | Trench-gate SiC MOSFET with low on-resistance (50% reduction) compared to conventional products. | |
| Low frequency Leg | 600V SJ MOSFET | R60 serires | 600 to 800V power MOSFETs using superjunction technlogy, PrestoMOSTM series enable high speed switching and low on-resistance performance. Variaous choice of package are availble. |
| 650V SJ MOSFET | R65 serires | 600 to 800V power MOSFETs using superjunction technlogy, enabling high speed switching and low on-resistance performance. Variaous choice of package are availble. | |
| Gate Driver | BM60212FV-C | High side/low side driver with high withstand voltage (1200V). A mirror clamp function and under voltage lockout function (UVLO) are built in. | |
| BM61X4XRFV | 1ch configuration, 3,750Vrms isolated type Gate Driver, can be used for switching devices with current source pins. |
Simulation
A-010 : Totem-Pole Bridgeless PFC (Synchronous FETs)
Related Topologies