DC analysis and design of forward multi-resonant converter

Abstract

A DC analysis of the forward zero-voltage-switching multiresonant converter is presented. The voltage conversion ratio characteristics and semiconductor device voltage and current stresses are characterized. The results of the analysis are verified by experiments and SPICE simulation. It is found that to minimize the current and voltage stresses, the characteristic impedance must be maximized and the ratio of the primary to secondary resonant capacitances must be minimized. Based on the analysis, a procedure for designing the resonant tank with minimum current and voltage stresses is established.<>