New zero-voltage-switching phase-shift full-bridge converter with low conduction losses
Gwan-Bon Koo
Gun-Woo Moon
Myung-Joong Youn
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Feb. 2005
Volume: 52,
Issue: 1
On page(s): 228- 235
ISSN: 0278-0046
INSPEC Accession Number: 8275547
Digital Object Identifier: 10.1109/TIE.2004.841063
Current Version Published: 2005-02-07
Abstract
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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