Description

This reference design is a 1kW bidirectional DC transformer (DCX), converting 800V DC bus into 12V with isolation. The design is controlled by F280039C, and constantly operated at the resonant frequency of the resonant tank. The primary side uses LMG3622 GaN half bridges in serial to handle up to 900V DC voltage. The serial half bridges (SHB) can be modified into full bridge, and change the high-voltage side from 800V to 400V. The serial half bridge enables various PWM strategies and control flexibility.