New zero-voltage-switching phase-shift full-bridge converter with low conduction losses
Gwan-Bon Koo; Gun-Woo Moon; Myung-Joong Youn
Industrial Electronics, IEEE Transactions on
Volume 52, Issue 1, Feb. 2005 Page(s): 228 - 235
Digital Object Identifier   10.1109/TIE.2004.841063
Summary: A new zero-voltage-switching (ZVS) phase-shift full-bridge (PSFB) converter with low conduction losses is proposed. It is based on the PSFB converter with series-connected two transformers, which features wide ZVS ranges. By adding a capacitor, the proposed converter overcomes the disadvantage of the based converter, such as the high circulating energy. Furthermore, the turns ratio of the transformers can be increased as well. Therefore, high efficiency of the proposed converter can be achieved. Operational principles and experimental results for a 100-W (5 V, 20 A) prototype are presented to validate the proposed converter.

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