Active Clamp ZVT Boost Converter

In this paper, the technique of active clamp is applied in ZVT boost converter and forms active clamp ZVT boost converter. This converter is not only simple in topology but also achieves ZVT in both the main switch and the auxiliary switch. The boost diode turns off naturally and there is no reverse recovery loss. Current of the boost inductor flows in bi-direction and the usage rate of the magnetic core is increased. Operating intervals of the converter are presented and analyzed. Performances of this converter are discussed. A design example with simulating results and experimental results is presented. Conclusions are given at last