A Practical Use of Soft Switching Power Supply on the Self-Oscillating System Resonant Type Converter by Using Cross Transformer

Abstract

Recently, soft switching power supply by resonant type converter is widely taken notice, which has high efficiency and low noise characteristics principally. Conventional resonant type converter has a complex control circuit, and we solved this problem by using cross transformer. Now, various types of switching power supplies, which have a simple structure, are realised by combination of self oscillating driving circuit and resonant type converter. This paper presents our process of the development and the latest technology of soft switching power supply which is enabled by super small-sized cross transformer.