期刊刊名：吳鳳學報 　 卷期：19期

篇名出版日期：2011年12月1日

作者：Wen-Chih Wu, Shu-Yuan Fan, Kun-Song Hung, Sheng-Yu Tseng

語言：English

關鍵字：Flyback converter, Snubber, Auxiliary power supply

被點閱次數：2次

閱讀時間：555sec

摘要：
A multi-output auxiliary power supply realized by a flyback converter is presented to provide the low power supply needed for the control circuits and driving circuits in the power converter systems. In this topology, a loss-less snubber constructed by a forward converter is introduced into the secondary of transformer in the flyback converter to recover energy stored in leakage inductor of the secondary and to alleviate the oscillation caused by the parasitic capacitor of the diode and the leakage inductor in the secondary, improving the conversion efficiency. Based on these concepts, an auxiliary power supply with five sets output voltages has been designed and implemented to verify the feasibility of the proposed multi-output auxiliary power supply. Experimental results show that the conversion efficiency has been increased as the circuit operated at 20% load.

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