Comparison of Different Design Methods for the Parallel Resonant Converter

For the voltage-fed parallel resonant converter several different approaches to investigate its steady-state characteristics exist. The exact solution yielded by state-plane analysis is compared to the approximate solution using ing fundamental components of the waveforms and to its extension regarding the first harmonic of discontinuous capacitor voltage waveforms. In addition, the accuracy in predicting important design criteria as well as the mathematical complexity of both methods is compared.