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
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Authors:
Choi, Hangseok (Fairchild Semiconductor, USA)
Abstract:
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.