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A new soft-switched PFC boost rectifier with integrated flyback converter for stand-by power

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3 Author(s)
Yungtaek Jang ; Power Electron. Lab., DELTA Products Corp., Res. Triangle Park, NC, USA ; Dillman, D.L. ; Jovanovic, M.M.

This paper presents a magnetic integration approach that reduces the number of magnetic components in a power supply by integrating magnetic components in two conversion stages. Specifically, in the proposed approach, a single transformer is used to implement the continuous-conduction-mode boost power-factor-corrected (PFC) converter and the dc/dc flyback converter. The integrated boost and flyback converters offer soft switching of all semiconductor switches including a controlled di/dt turn-off rate of the boost rectifier. The performance of the proposed approach was evaluated on a 150-kHz, 450-W, universal-line range boost PFC converter with 12-V/2.2-A integrated stand-by flyback converter.

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Power Electronics, IEEE Transactions on  (Volume:21 ,  Issue: 1 )