Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title A High Efficiency Phase-Shifted Full-Bridge Converter with Wide Input Voltage Range
Authors Jung-Kyu Han ; Seung-Hyun Choi ; Gun-Woo Moon
Page pp.66-69
ISSN 1229-2214
Keywords Full-bridge DC/DC converter ; High efficiency ; Wide input voltage range ; Zero voltage switching
Abstract This study proposes a high-efficiency phase-shifted full-bridge (PSFB) converter with a wide input voltage range. The conventional PSFB converter is a useful topology in high-power applications. This converter not only achieves the zero-voltage switching of the primary switches, but also has small RMS current in the primary side. However, because the conventional PSFB converter has large freewheeling current in the primary side when it is designed considering the hold-up time of the converter, such a converter has high conduction loss at the primary switches. To solve this problem, a new PSFB converter is proposed in this study. The experiment is implemented with an input voltage ranging from a 320 V?400 V and an output power specification of 715 W.