Abstract：In order to study the circuit characteristics of the capacitive output filter series-parallel resonant converter (LCC), the modeling and analysis is presented. Firstly, for two operating modes, time-domain mathematical model is obtained respectively. Then, base on the mathematical models, the circuit characteristics of LCC resonant converter is studied, and the computation expressions are deduced for the circuit parameters design, and the relationship between the resonant tank component values choice and the circuit characteristics is discussed. It is pointed out that the parallel-to-series-capacitor ratio is an important factor for the circuit performance. Finally, a design method of the LCC resonant converter is provided according to design requirements, and the design process is introduced. The simulation and experimental results are presented.
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2013, Vol. 28 
