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Self Oscillation DC/DC Converter with High Voltage Step Up Ratio  

Jung, Yong-Joon (국민대 전자공학과)
Han, Sang-Kyoo (국민대 전자정보통신공학부)
Hong, Sung-Soo (국민대 전자정보통신공학부)
Roh, Chung-Wook (국민대 전자정보통신공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.14, no.3, 2009 , pp. 220-227 More about this Journal
Abstract
A self oscillation DC/DC converter which has a very desirable characteristics of the high input-output voltage conversion ratio for high voltage DC power supply applications is proposed in this paper. The proposed converter is composed of one power switch, one inductor, several capacitors and diodes. Compared with conventional high-voltage DC/DC converters, it performs the high- voltage power conversion using the inductor instead of the bulky step-up transformer. Therefore, it can reduce the size of magnetic device and save the cost. Moreover, since it needs no control IC by using self oscillation circuit and has lower voltage stress on output diodes, it features a lower cost, simpler structure and more improved performance. Finally, a comparative analysis and experimental results are presented to show the validity of the proposed converter.
Keywords
Self oscillation; High voltage; Step up ratio; DC/DC Power converter;
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