DC analysis of half-bridge zero-voltage-switched multiresonant converter

A complete DC analysis of the half-bridge zero-voltage-switched multiresonant converter is presented. The analysis reveals four different modes of operation. The existence of the modes has been verified experimentally. A computer algorithm is developed for calculating the complete DC voltage-conversion-ratio characteristics encompassing all four modes of operation. The DC characteristics enable the design of the converter to be optimized. The optimization is performed by selecting the resonant components and the turns ratio of the transformer. The computer algorithm can be easily adapted for the analysis of the small-signal properties of the half-bridge multiresonant converter.