Analysis of Resonant Converter with Multiplier

When conventional resonant converter is applied in high output voltage power supply, the ratio of the transformer is usually very large, and the voltage stress on the filtering components is too high. In order to solve this problem, a symmetric multiplier is applied in the conventional resonant converter and composes the resonant converter with multiplier. The performance of the symmetric multiplier is analyzed. The topologies of the three resonant converters with multiplier are presented. The characteristics of them are analyzed and compared by the method of fundamental frequency analysis.