Primary-side charge-pump dimming controller for the cold-cathode fluorescent lamp ballast

Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI:10.1109/TENCON.2001.949685

G. Hsieh, Chin-Hung Lin, Chang-Hua Lin, Hung-I Hsieh

引用次数: 19

Abstract

A primary-side charge-pump controller built into a cold-cathode fluorescent lamp (CCFL) ballast is presented for widening the dimmer range while stabilizing the dynamic feedback regulation for the lamp luminance in uniform distribution without thermometer effect. The proposed controller consists of a linear error amplifier for dynamic feedback control regulation and a shunt amplifier for dimmer control. A dimming strategy is explored for extending the dimming range above 1:50 far higher than the conventional 1:10. Besides, floating the CCFL alone at the secondary side also raises the lamp efficiency without parasitic effect.

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冷阴极荧光灯镇流器主侧电荷泵调光控制器

提出了一种内置在冷阴极荧光灯(CCFL)镇流器内的一次侧电荷泵控制器，在扩大调光范围的同时稳定了灯亮度均匀分布的动态反馈调节，不受温度计效应的影响。该控制器由用于动态反馈控制调节的线性误差放大器和用于调光控制的分流放大器组成。探索了一种调光策略，将调光范围扩展到1:50以上，远高于传统的1:10。此外，将CCFL单独漂浮在二次侧也提高了灯具效率，没有寄生效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)

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