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High-Efficiency & Cost-Effective Multi-Output LLC Resonant Converter using Single Transformer  

Cho, Sang-Ho (국민대 전자공학과)
Yoon, Jong-Kyu (국민대 전자공학과)
Roh, Chung-Wook (국민대 전자정보통신공학부)
Hong, Sung-Soo (국민대 전자정보통신공학부)
Kim, Jong-Hae (삼성전기(주) P&M 사업부)
Lee, Hyo-Bum (삼성전기(주) P&M 사업부)
Han, Sang-Kyu (국민대 전자정보통신공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.13, no.6, 2008 , pp. 439-446 More about this Journal
Abstract
The medium power system for the recent electronic products that can perform the multi-function requires various multi-output, high-efficiency and low cost characteristics. To cope with these critical issues, a new high-efficiency and cost-effective multi-output LLC resonant converter is proposed in this paper. The proposed converter requires only 1 power switch instead of the bulky and expensive non-isolated DC/DC converter. Therefore, it features a simple structure, lower cost and high-efficiency. Especially, since the proposed converter can ensure the ZVS or ZCS of all power switches, it has very desirable advantages such as more improved EMI characteristics and reduced switching losses. Finally, to confirm the operation, validity, and features of the proposed circuit, experimental results from a SMPS prototype for 42" FHD PDP TV are presented.
Keywords
Medium power system; Multi-output; LLC resonant converter; PDP TV; SMPS;
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  • Reference
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