The Research On The Planar Integrated Magnetics In The Soft Switching Converter

Following the background of the power electronic integration and the trend of samll, thin and light for switch power, this paper summarizes the technique of integrated magnetic and introduces the normal method of integrated magnetics; base on the ZCS quasi-resonant converters' common characteristic,the influence on the soft switching is discussed when the magnetics are integrated, then the Buck ZCS QRC is taken for example to illustrate the methods about the attainment of the soft switching and the integration of the magnetics; base on the LC unit and the modes about the capacitor and the inductor in the ZCS quasi-resonant converters, the passive integration is discussed; base such above basis, the three inductors' integration in the ZCS quasi-resonant three level converters is dicussed.