Analysis of Asymmetrical LCC Parallel Resonant Converter

This paper presents analysis of asymmetrical LCC parallel resonant converter. With asymmetrical topology, only two switches are used. The capacitor connected in series is assigned to be relatively large, so the voltage across it can be assumed constant during steady state. This assumption makes the proposed converter easy to be analyzed. The analysis includes steady state operation and state-plane representation. Signal waveforms can be obtained from state-plane diagram. Control characteristics are given as a part of results from the analysis. Design example and simulation results are also given in order to confirm the analytical work.