Input Current Ripple Reduction of Switching Capacitor Converter by Dividing the Output Capacitor

摘要

The input current of basic switching capacitor converter is discontinuous and pulsed, hence has large ripple. In this paper, an input current ripple reduction method is proposed by dividing the output capacitor of a dual-phase switching capacitor converter, and repositioning part of the capacitor between the input and output. This method can dramatically reduce the input current ripple without degrading the power density. The simulation result is provided to verify the effectiveness of the proposed method.