Abstract:

Aiming at the loss caused by the switching tube and magnetic element in the working process of the LLC resonant converter.The switching losses and switching losses of the LLC resonant converter are analyzed,and the mathematical model of the switching loss is established according to the theoretical formula.Combined with the synchronous rectification technology,the key factors that affect the efficiency of the converter are analyzed by using Mathcad software.Through the simulation analysis,it is verified that the synchronous rectification technology can improve the efficiency of the LLC converter resonator.

Key words: LLC resonant converter;model;Synchronous Rectification