Title :
A cold-cathode fluorescent lamp driver circuit with synchronous primary-side dimming control
Author :
Lin, Mu-Shen ; Ho, Wen-Jung ; Shih, Fu Yuan ; Chen, Dan Y. ; Wu, Yan-Pei
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
4/1/1998 12:00:00 AM
Abstract :
A novel synchronous primary-side dimming control scheme is proposed and tested for a cold-cathode fluorescent lamp (CCFL) driver circuit for liquid crystal display (LCD) backlight illumination display applications. This new control scheme features high efficiency, even-dimming sensitive adjustment, even-brightness control for a two-lamp system, less lamp flickering problems, stable feedback control and simplicity. An analysis of the circuit is given, from which a design example is presented
Keywords :
DC-AC power convertors; cathodes; control system analysis; control system synthesis; driver circuits; feedback; fluorescent lamps; invertors; lighting control; liquid crystal displays; resonant power convertors; stability; brightness control; cold-cathode fluorescent lamp driver circuit; control design; control simulation; efficiency; lamp flicker; liquid crystal display backlight; stable feedback control; synchronous primary-side dimming control; Brightness; Circuit testing; Control systems; Driver circuits; Fluorescent lamps; Inductance; Lighting; Liquid crystal displays; Pulse width modulation inverters; Voltage fluctuations;
Journal_Title :
Industrial Electronics, IEEE Transactions on
