With the increasing number of switched capacitor cells

the topology of n-stage step-up resonant switched capacitor converter (RSC) is more complex

so it is hard to observe sneak circuit paths in the converter. In this paper

a general method is proposed to analyze the sneak circuit paths in n-stage step-up RSC converters based on graphic theory. The theorem and steps to obtain sneak paths were explained in detail

and the 3-stage step-up RSC converter was taken as an example to describe how to find out the sneak circuit paths. The proposed sneak circuit analysis method

whose correctness is finally verified by simulation and experimental results

can be extended to other power electronics converters

and is useful for discovering

eliminating or utilizing sneak circuit paths.