A novel high voltage-boosting converter with active clamp

Abstract

In this study, a high voltage-boosting converter is presented, which combines a coupled inductor, a charge pump capacitor, and active clamp circuit, so as to boost up the output voltage as well as to make the main switch turned on with zero voltage switching. In this converter, the coupled inductor behaves as not only an inductor but also a transformer. And, the active clamp switch in the active clamp circuit is used to charge the charge pump capacitor as well as to give a path to the active clamp capacitor. By doing so, the energy stored in the leakage inductors can be recycled, and hence the voltages across the two switches have no voltage spikes.