Quantification analysis of input/output current of interleaved power factor correction (PFC) boost converter

Quantification analysis of input/output current facilitates the optimal design of the interleaved PFC boost converter. This paper presents a method to calculate these currents both in switching cycle and mains half cycle for interleaved PFC AC/DC boost converter, which is valid for this converter with arbitrary number of phases operating at continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The proposed method is straightforward and the time function can be derived with it in a very short calculation time. Moreover, it provides a foundation for further research. It can be applied to interleaved PFC converters with other topologies, such as flyback and Sepic. Experimental results validate the proposed method, as is shown.