TY - GEN
T1 - A demagnetization circuit for single-ended forward converter
AU - Changchien, S. K.
AU - Liang, Tsorng-Juu
AU - Tseng, K. C.
AU - Chen, Jiann-Fuh
AU - Lin, Ray-Lee
PY - 2007/12/1
Y1 - 2007/12/1
N2 - This paper presents a novel demagnetization scheme for single-ended forward converter. In the past, many prior transformer core reset methods have been proposed in order to avoid the transformer saturation, such as tertiary transformer winding, RCD clamp, resonant reset, active clamp and two-switch forward topology etc.. However, the lower efficiency, complicated transformer winding structure and the cost of too many added elements are the main drawbacks. In this paper, a novel demagnetization scheme for single-ended forward converter is presented. The proposed demagnetization circuit is very simple and the transformer demagnetization can be reached by adding two diodes and a clamping capacitor. In addition, the transformer design and PWM control circuit for the single-ended forward converter with proposed demagnetization circuit is the same as conventional forward converter. Finally, the operation and circuit performance of the single-ended forward converter with proposed demagnetization circuit are demonstrated with an experimental prototype that delivers a 5V/10A output from a 36-72V input at the maximum efficiency of 88%.
AB - This paper presents a novel demagnetization scheme for single-ended forward converter. In the past, many prior transformer core reset methods have been proposed in order to avoid the transformer saturation, such as tertiary transformer winding, RCD clamp, resonant reset, active clamp and two-switch forward topology etc.. However, the lower efficiency, complicated transformer winding structure and the cost of too many added elements are the main drawbacks. In this paper, a novel demagnetization scheme for single-ended forward converter is presented. The proposed demagnetization circuit is very simple and the transformer demagnetization can be reached by adding two diodes and a clamping capacitor. In addition, the transformer design and PWM control circuit for the single-ended forward converter with proposed demagnetization circuit is the same as conventional forward converter. Finally, the operation and circuit performance of the single-ended forward converter with proposed demagnetization circuit are demonstrated with an experimental prototype that delivers a 5V/10A output from a 36-72V input at the maximum efficiency of 88%.
UR - http://www.scopus.com/inward/record.url?scp=49949098635&partnerID=8YFLogxK
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U2 - 10.1109/IECON.2007.4460181
DO - 10.1109/IECON.2007.4460181
M3 - Conference contribution
AN - SCOPUS:49949098635
SN - 1424407834
SN - 9781424407835
T3 - IECON Proceedings (Industrial Electronics Conference)
SP - 1390
EP - 1395
BT - Proceedings of the 33rd Annual Conference of the IEEE Industrial Electronics Society, IECON
T2 - 33rd Annual Conference of the IEEE Industrial Electronics Society, IECON
Y2 - 5 November 2007 through 8 November 2007
ER -