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http://dx.doi.org/10.6113/TKPE.2010.15.1.52

Design and Application of PFC Direct Drive Inverter for LCD-TV  

Ko, Tae-Seok (국민대 전자공학과)
Jung, Yong-Joon ((주)LIG 넥스원)
Hong, Sung-Soo (국민대 전자정보통신공학부)
Han, Sang-Kyu (국민대 전자정보통신공학부)
Jang, Byung-Jun (국민대 전자공학과)
Jang, Young-Su (삼성전기(주) P&M 사업부)
Han, Seung-Ho (삼성전기(주) P&M 사업부)
Roh, Chung-Wook (국민대 전자정보통신공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.15, no.1, 2010 , pp. 52-59 More about this Journal
Abstract
The conventional CCFL (Cold Cathode Fluorescent Lamp) inverter used in the backlight unit for LCD-TV, composed of the three power stage, can degrade the whole power conversion efficiency. In this paper, a novel scheme to drive the CCFL, composed only of the two power stage without using a dc/dc power stage, is proposed to enhance the whole power conversion efficiency. By adopting the proposed "4-in-1 Transformer", the current balance and the simultaneous ignition among the four CCFL lamp are assured with the one inverter circuit. The proposed scheme features the simple circuit structure, which can save the volume and the cost in the LCD backlight unit. Design considerations are discussed and design procedures are derived. Experimental results of the proposed scheme for 40" LCD-TV are presented to confirm the theoretical analysis.
Keywords
CCFL; Inverter; PFC direct drive;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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