Quasi-Resonant Two-Switch Flyback Converter with input voltage range extension circuit

Conference: PCIM Europe 2014 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/20/2014 - 05/22/2014 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2014

Pages: 7Language: englishTyp: PDF

Personal VDE Members are entitled to a 10% discount on this title

Choi, Hangseok (Fairchild Semiconductor, USA)

This paper presents a quasi-resonant two-switch flyback converter with input voltage range extension circuit, which allows wider operating input voltage range while maintaining the near zero voltage switching (ZVS) of conventional two-switch quasi-resonant flyback converter. The proposed design consideration is verified with 156 W power supply for all-in-one PC, where the holdup time is extended allowing smaller size of bulk capacitor.