TY - GEN
T1 - Self-oscillation flyback converter with lossless snubber for contactless power supply application
AU - Lin, Ray Lee
AU - Huang, Zhi Yu
PY - 2010/12/20
Y1 - 2010/12/20
N2 - This paper presents the self-oscillating flyback converter with an integrated flyback-transformer whose auxiliary winding is utilized as the lossless snubber inductor and output-voltage sensing winding. In the conventional flyback converter, the turn-off switching loss caused by high switching frequency leads to low conversion efficiency. The proposed lossless snubber scheme not only reduces the voltage spikes at turn-off interval, but also recycles the energy stored in the leakage inductor to the input source for improving conversion efficiency. Considering further simplification, the lossless snubber inductor and the output-voltage sensing winding can be combined together as a single winding. A prototype circuit of the 15W self-oscillating flyback converter with lossless snubber circuit and output-voltage sensing circuit is built to verify the performances, such as the voltage stress on the switch, the conversion efficiency, and the load regulation.
AB - This paper presents the self-oscillating flyback converter with an integrated flyback-transformer whose auxiliary winding is utilized as the lossless snubber inductor and output-voltage sensing winding. In the conventional flyback converter, the turn-off switching loss caused by high switching frequency leads to low conversion efficiency. The proposed lossless snubber scheme not only reduces the voltage spikes at turn-off interval, but also recycles the energy stored in the leakage inductor to the input source for improving conversion efficiency. Considering further simplification, the lossless snubber inductor and the output-voltage sensing winding can be combined together as a single winding. A prototype circuit of the 15W self-oscillating flyback converter with lossless snubber circuit and output-voltage sensing circuit is built to verify the performances, such as the voltage stress on the switch, the conversion efficiency, and the load regulation.
UR - http://www.scopus.com/inward/record.url?scp=78650092469&partnerID=8YFLogxK
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U2 - 10.1109/ECCE.2010.5617969
DO - 10.1109/ECCE.2010.5617969
M3 - Conference contribution
AN - SCOPUS:78650092469
SN - 9781424452866
T3 - 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
SP - 549
EP - 554
BT - 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
T2 - 2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010
Y2 - 12 September 2010 through 16 September 2010
ER -
