Switched-Capacitor-Based Dual-Switch High-Boost DC–DC Converter

Abstract

A switched-capacitor-based dual-switch dc-dc converter with a high-boost voltage gain is proposed in this paper. The proposed converter can obtain a high-voltage gain with a small duty cycle, which decreases the voltage stress and the conduction loss on the power switches. This paper presents the key waveforms, the operating principles at the continuous conduction mode and the discontinuous conduction mode, and the parameter design. Moreover, a comparison between the proposed converter and other nonisolated converters has been completed. To verify the operating principle, a 200 W prototype is constructed with an input voltage of 25-50 V and an output voltage of 200 V. The simulation and experimental results are shown.