| Title |
A Study on PFC of Active Clamp ZVS Flyback Converter |
| Authors |
Tae-Young Choi ; Dong-Kyun Ryu ; Woo-Suk Lee ; Jeong-Joon Ahn ; Chung-Yeun Won ; Soo-Seok Kim |
| Abstract |
This paper analyzed PFC of active clamp ZVS flyback converter by adding two method PFC (Power Factor Correction) circuit - two-stage and single-stage. The addition of active clamp circuit also provide a mechanism for achieving ZVS of both the primary and auxiliary switches. ZVS also limits the turn off di/dt of the output rectifier, reducing rectifier switching loss and switching noise, due to diode reverse recovery. As a results, the proposed converters have characteristics of the reduced switching noise and high efficiency in comparison to conventional flyback converter. The simulation and experimental results show that the proposed converters improve the input PF of 300[W] ZVS flyback converter by adding single-stage, two-stage PFC circuit. |