Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2006.06a
- /
- Pages.81-83
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- 2006
Transformer-less CCFL Driver for LCD Backlight
LCD 백라이트용 트랜스포머 없는 냉음극관(CCFL) 구동 회로
- Choi Eun-Seok (KAIST) ;
- Yoon Hyun-Ki (KAIST) ;
-
Moon Gun-Woo
(KAIST) ;
- Youn Myung-Joong (KAIST) ;
- Kang Moon-Shik (Samsung Electronics)
- Published : 2006.06.01
Abstract
The conventional cold cathode fluorescent lamp (CCFL) driver for LCD TV has a transformer for each lamp to step up the high sinusoidal waveform from the low input voltage. The transformer used in the conventional topology causes the driver to have bulky size and high cost. This paper proposes a new transformer-less CCFL driver for LCD backlight that is based on the parallel-loaded resonant inverter topology. This resonant topology enables the circuit to supply enough high voltage for CCFL without a transformer. Also, with current-balancing technique, this transformer-less inverter drives 16 CCFL lamps.
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