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

Volume

45

Issue

2

fYear

1998

fDate

4/1/1998 12:00:00 AM

Firstpage

249

Lastpage

255

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;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.681223

Filename

681223