Analysis of MOSFET failure modes in Bi-directional phase-shift full-bridge converters

Abstract

This paper presents an analysis of the mechanism of failure modes in bi-directional phaseshift full-bridge converters, composed of MOSFET, based on the circuit operation and parasitic parameters of MOSFET. In addition, the relation between circuit operation and parameters is suggested through an experimental comparison. From this relation, the suitable ranges of parameters for stable performance are analyzed. The design criteria of the bi-directional phase-shift full-bridge converter are presented and evaluated from the experimental verification.