A Study For Passive Soft-Switching Technology On Computer Switching Power Supply

Power supply is the drive of computer. As the fast develop of the computer science, it demands that the power supply become smaller and lighter . In order to do this , the frequency must be improved, so it is right to use the soft-switching technology. The asymmetrical half bridge converter is the critical part of computer switching power supply, it is the place where to bring in the passive soft-switching technology, so the aim of this paper is to bring the simple and effective passive soft-switching technology into the model and improve it.This paper first present a study of the soft-switching process of the asymmetrical half bridge converter, and then made some improvements based on the passive soft-switching technology, at last test the method with the simulation software, and the result is tested right. In the end a motive circuit and a control circuit are designed , they are for the preparation of the deep improvement and the experiment.It proved that to introduce the passive soft-switching technology into the computer switching power supply is an effective way to higher the frequency, and improve the working efficiency.