Design and Implementation of Soft Switching based Push Pull Converter for LED Application

Abstract

This paper represents soft switching based push-pull converter for LED application. This prominence of this topology is to reduce conduction loss, higher efficiency and low switching loss. This topology use zero voltage switching to reduce conduction loss. The push pull converter is used as a DC-DC converter very appropriate for low and medium power application. High efficiency, reduced ripple, low switching loss predominance of this application. Here increasing the switching frequency achieve high power density and reduce complexity of the circuit and also they have less component used. Here lower switching loss can be obtained by ZVS method. Here 48 V dc is converted into 12 V dc and switching frequency take 100 KHz, resonance frequency take 300 KHz to obtain soft switching. Here LED application used as a load. This topology is simulated in PSIM.