A static model for multiphase interleaving switched capacitor power converter (SCPC) is proposed. The general capacitor-to-capacitor charge transfer behavior was analyzed. The charge redistribution loss and switch conduction loss in SCPC were described as voltage loss in the charge transfer subprocess equivalently. The equivalent output resistance of a switched capacitor power converter at any switching frequency could be predicted easily and accurately. A “proportional current approximation” method was proposed to establish a charge transfer model with a current load. Therefore, the effects of load and output decoupling capacitors on the static characteristics of capacitive power converters could be predicted and analyzed. Compared with the traditional model, the proposed model can accurately describe the static characteristics of the switched capacitor power converter at medium switching frequency. The output voltage ripple of SPCP in multi-phase interleaving control can be predicated as well.