Research on the planar magnetic integration in quasi-resonant converters

Paper bases on the principles of the coupling inductor and the quasi-resonant converts to illustrate the planar integration of the resonant inductor and the filter inductor, then the decreasing in the volume and height can be achieved, and the technical support for the power electronic integration can be provided. Paper takes the buck ZCS QRC for example to illustrate the specific planar integration , through comparing the forward coupling with the backward coupling, the soft switching can be achieved when the coupling is loose coupling. The simulated results of the circuit and the flux line are also included in this paper