Comparison between CCM single-stage and two-stage boost PFC converters

In this paper, the analysis of the major-component ratings of the continuous current mode (CCM) single-stage power-factor-correction (PFC) and the CCM boost two-stage PFC converters is given. The results of the analysis are summarized in a number of design plots generated for different output power levels. Finally, merits and limitations of these two approaches are discussed.