Leveraging Wolfspeed 650V C3M™ SiC MOSFETs
This reference design demonstrates the application of Wolfspeed’s 650V C3MTM SiC MOSFETs to create a high power density electric vehicle (EV) on-board charger (OBC). This design leverages the high frequency switching capabilities of Wolfspeed 650V C3M™ SiC MOSFETs to create a smaller, lighter and cost effective system. This reference design is offered as a comprehensive design package which can be used as a starting point for new SiC designs.
The design accomplishes:
- Peak efficiencies of 96.5%
- Power densities of 53W/in^3 or 3KW/L
Specifications:
- Universal single phase input voltage between 90V and 265V
- Output Voltage of 250V-450V DC
- 18 A Output Current in charging mode
- Front End AC/DC PFC using CCM Totem-Pole Bi-Directional Topology operating at 67 Khz
- Bi-Directional DC/DC CLLC resonant converter operating at 148-300 KHz
- Constant Current, Constant Voltage or Constant Power Mode
- Unique integrated heatsink design removes heat from MOSFET’s, transformer and inductors
- CAN Interface
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