Analysis and design of a half-bridge parallel resonant converteroperating above resonance

摘要

A half-bridge parallel resonant converter (PRC) operating aboveresonance is analyzed in detail to provide a more straightforward andeasy-to-use design tool. Closed-form solutions for the PRC are derivedunder steady-state conditions. Resonant component selection criteria isprovided. Various design parameters derived from the results of theanalysis are presented in the form of normalized design graphs todirectly determine the component ratings. Using these design graphs, astep-by-step design procedure for a 100 kHz, 150 W multioutput switchingpower supply is given and implemented for verification of theoreticalresults