Bidirectional CLLLC resonant, dual active bridge (DAB) reference design for HEV/EV on-board chargers

CLLLC resonant DABs with bidirectional power flow capabilities and soft switching characteristics are an ideal candidate for hybrid electric vehicle/electric vehicle (HEV/EV) on-board charger and energy storage applications. This design demonstrates the use of a C2000™ MCU to control this power topology in closed voltage and closed current loop modes. The hardware and software available for this design can help you
reduce your time to market.

characteristic

• ● Vprim: 380–600V DC; Vsec: 280–450V DC; maximum power: 6.6kW; 98% peak efficiency
• ● CLLLC resonant tank with 500kHz rated PWM switching (300kHz–700kHz range) enables higher power density
• ● Soft switching uses zero-voltage switching (ZVS) on the primary side and zero-current switching (ZCS) and ZVS on the secondary side to achieve higher efficiency
• ● Use Rogowski coil sensors to implement active synchronous rectification solutions to improve efficiency
• ● Software frequency response analyzer (SFRA) and compensation designer facilitate control loop tuning
• ● Control Law Accelerator (CLA) provides software support for TMS320F28004x devices, enabling integrated OBC designs that control AC/DC and DC/DC through a single C2000 MCU.