Resonant Capacitor On/Off Control of Half-Bridge LLC Converter for High-Efficiency Server Power Supply

In this paper, a simple control method of the half-bridge (HB) LLC converter with one additional switch and capacitor in the primary side is proposed for wide-input-voltage applications with the hold-up time conditions. At nominal input, since the proposed method enables the HB LLC converter to operate with large transformer magnetizing inductance, it can reduce the conduction and switch turn-off losses in the primary side, which makes it highly efficient. On the other hand, during the hold-up time, since the proposed method increases the resonant capacitance by turning on one additional switch, the HB LLC converter can obtain high-voltage gain. To confirm the validity of the HB LLC converter with the proposed method, a 325-385 V input and 56 V/350 W output laboratory prototype is built and tested
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2016-09
Language
English
Keywords

ADAPTER; DESIGN; SYSTEM

Citation

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, v.63, no.9, pp.5410 - 5415

ISSN
0278-0046
DOI
10.1109/TIE.2016.2558481
URI
http://hdl.handle.net/10203/213934
Appears in Collection
EE-Journal Papers(저널논문)
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