DocumentCode :
435397
Title :
Improvement of characteristics of active-clamped ZVS forward converter with a synchronous rectifier
Author :
Oh, Young Ki ; Park, Sung Kyo ; Lim, Byoung Hwan ; Park, Chong Beak
Author_Institution :
Chosun Univ., Gwang Ju, South Korea
Volume :
1
fYear :
2004
fDate :
2-6 Nov. 2004
Firstpage :
63
Abstract :
For power supplies of communication system, we propose an active-clamped zero-voltage-switching (ZVS) forward converter with a synchronous rectifier. This converter was designed and fabricated, and the power conversion efficiency was compared with a conventional forward converter having a reset winding with synchronous rectifiers. Here, they were operated on the conditions of input voltage of DC 48 V, output voltage of 5 V, output current of 10 A and switching frequency of 120 kHz. As a measurement result, the conversion efficiency of the proposed converter was 90.6% and it was average 3.1% higher than the conventional forward converter having a reset winding with synchronous rectifiers. If major components of a converter are carefully chosen by considering the switching characteristics and the driving circuit for ZVS is more stabilized, this proposed converter can be used to realize the converter with output voltage lower than 3.3 V, higher conversion efficiency, and higher output current.
Keywords :
rectifiers; switched mode power supplies; switching convertors; telecommunication power supplies; zero voltage switching; 10 A; 120 kHz; 48 V; 5 V; SMPS; ZVS; communication system power supply; driving circuit; forward converter; power conversion efficiency; reset winding; switching characteristic; switching mode power supply; synchronous rectifier; zero-voltage-switching; Low voltage; MOSFETs; Pulse width modulation; Rectifiers; Resonance; Switched-mode power supply; Switches; Switching circuits; Switching converters; Zero voltage switching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE
Print_ISBN :
0-7803-8730-9
Type :
conf
DOI :
10.1109/IECON.2004.1433285
Filename :
1433285
Link To Document :
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