High frequency quasi resonant SEPIC converter for wide range of operation

This paper presents the comparison between the performance range of conventional and Quasi Resonant Single Ended Primary Inductor Converter (SEPIC) topology. Here the modified topology is the combination of the quasi resonant characteristics and the SEPIC converter topology. A Wide input (3.6-7.2V) and wide output (3-9) voltage ranges are obtained satisfactorily for the high frequency operation. Since converter designed for high frequency applications, Zero voltage Switching (ZVS) is ensured. By using this SEPIC topology the wide step up and step down conversion with high frequency is possible for low power applications. It will reduce the size, weight and losses of the converter and improves the transient response and it is effectively suitable for light load operations.