Accurate Analysis Method and Voltage Gain Curve Derivation Algorithm Based on Time-Domain Analysis for High-Efficiency LLC Resonant Converter Design

An accurate analysis method for an LLC resonant converter and a time-domain (TDA)-based voltage gain curve derivation algorithm are proposed in this paper. When applied to converter, the TDA can obtain high-accuracy current waveforms by solving nonlinear equations circuit parameters through operation-mode analysis. operating mode classification was based on results of The values steady state were quickly precisely derived using algorithm. power-loss is required design high-efficiency converter. Therefore, powerful tool designing network. TDA-based provides voltage, value estimation curves all switching-frequency ranges. effectiveness verified 500 W prototype experiment.