Review of Totem Pole PFC Soft-switching Methods with Market Survey

This paper presents a comprehensive review of the soft switching methods for the totem pole (TTP) Power Factor Correction (PFC) circuit. Bridgeless PFC circuits are widely used in several applications like EV chargers, data centers, consumer service, and telecommunication equipment. The paper begins by conducting a market survey to gain an overall understanding of the present market products and the importance of soft switching methods. The article then proceeds to present a comprehensive review of TTP soft switching topologies for both GaN and SiC-based methodologies, categorized based on their soft switching approach on the AC or DC side. Finally, the paper concludes with a summary of these ZVS, ZCS, and ZVT techniques, including their advantages, disadvantages, and directions for future research.