A Switched-Capacitor Voltage Tripler With Automatic Interleaving Capability

This paper presents a high-efficiency switched-capacitor voltage tripler topology aimed at high-power applications. A soft-switching scheme without the addition of extra components is adopted to minimize the switching loss and the electromagnetic interference noises. A two-step current charging method is used to enable the input current and output voltage interleaving functionality without adding an excessive number of components. The large loss on the input capacitor that exists in the traditional switched-capacitor topologies is eliminated by employing this interleaving scheme. The soft switching and interleaving results are analyzed in detail. The experimental results for a 2-kW prototype are demonstrated to verify the functionality of the proposed topology.