Variable Delay Time Method in the Phase-Shifted Full-Bridge Converter for Reduced Power Consumption Under Light Load Conditions

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This paper proposes a new control method in the phase-shifted full-bridge converter for the server power supply, which is variable delay time of lagging-leg switches under the light load conditions. By widening the delay time, the switching occurs at the lower drain-source voltage and then switching loss can be reduced under the light load conditions. The voltage stress of synchronous rectifier switches is also reduced. Without additional power devices and side effects at heavy load condition, the higher efficiency under the light load conditions can be obtained. The analysis and experimental results are presented in this paper to confirm the validity of this study.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2013-11
Language
English
Article Type
Article
Keywords

BOOST PFC CONVERTER; SWITCHING LOSS ANALYSIS; REDUCTION TECHNIQUE; DC/DC CONVERTER; ZVS RANGE; EMI

Citation

IEEE TRANSACTIONS ON POWER ELECTRONICS, v.28, no.11, pp.5120 - 5127

ISSN
0885-8993
DOI
10.1109/TPEL.2013.2237926
URI
http://hdl.handle.net/10203/174278
Appears in Collection
EE-Journal Papers(저널논문)
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