High-Efficiency Half-Bridge Module with SiC MOSFETs for High-Power-Density Applications

摘要

SiC power MOSFETS have gained wide applications like drivetrain, EV chargers, server powers, and energy storage system thanks to their low switching power losses resulting from fast switching and fast recovery body diode . They can offer high efficiency and high power density . This work will detail the electrical and thermal design and test results of a 3. 3.7 kW half half-bridge DC/DC module using surface mount SiC MOSFET MOSFETs with a screwless heatsink heatsink. A peak efficiency of 99.2% has been obtained with a size of 3.4″ x 1.4″ x 1″ for a 200 VDC input/ 390 VDC output Synchronous Boost converter.