A new PWM DC/DC converter with isolated dual output using single power stage

Abstract

This paper presents a new PWM DC/DC converter with dual output power using single power stage, which has isolation characteristics between each one of dual output. The proposed converter topology is consists of only one switch and single secondary winding. The proposed converter, therefore, has better advantages of not only low cost and small size but also high power density because of using minimum components and devices compared with conventional methods, which use a multi winding transformer or several converters. Operating principle of the proposed converter topology, including the auxiliary circuit with the conventional ZVT (Zero-Voltage-Transition) for soft switching of the main switch, is illustrated in detail and the validity of the converter is verified through several interesting simulated and experimental results.