Abstract

A new DBC-based hybrid packaging and integration method is proposed in this paper. A multilayer power module is formed by a direct-bond-copper (DBC) and a window cutting printed circuit board (PCB). The SiC chips and PCB are placed and soldering on the DBC. Al bonding wires are used for connecting the chips and the PCB. A full SiC half-bridge power module is designed and fabricated in compact size. The parasitic inductance of power loop is only 3.38 nH. The passive device and gate drive circuit can be easily integrated on the PCB. Based on the idea, a highly integrated 2.5kW 300 kHz TCM synchronous rectification (SR) is designed. The power density achieves 379 W/in3 and maximum efficiency reaches 98.4%.

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