A Novel Phase Shift Combination Control Strategy for Isolated Resonant Switched-Capacitor Converter

Isolated resonant switched-capacitor converter(IRSCC) realizes galvanic isolation, reduces the amount of switch devices by multiplexing switches. However, the regulation range of output power and voltage ratio is limited under traditional single-phase shift (SPS) control and the circulating power causes additional losses and reduces efficiency. This paper proposes a novel phase shift combination control strategy for I-RSCC to reduce circulating loss, expand the output regulation range and maximize the efficiency. The simulation model is built to validate the proposed combined control strategies.