Abstract:A novel modulation mode named Fuzzy Pulse Skip Modulation(FPSM) in power converter is proposed in this paper, which is based on Pulse Skip Modulation(PSM) mode proposed by authors recently. PSM is a novel modulation mode in power converter, which has high efficiency, quick response and strong robust qualities. This paper gives the membership function, fuzzy rule and analysis results of FPSM. It is shown that FPSM not only has high efficiency, quick response and strong robust characteristics, but also decreases the ripple of output voltage and eliminates audible noise through analysis and simulation.