A high power factor AC LED driver with current glitch eliminated

被引：6

作者：

Yu, Dejun ^{[1
]}

Ning, Ning ^{[1
]}

Wu, Shuangyi ^{[1
]}

Yu, Qi ^{[1
]}

Chen, Wenbin ^{[1
]}

Feng, Chunyi ^{[1
]}

Liu, Yang ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

来源：

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2015年 / 83卷 / 02期

关键词：

Current glitch; Soft switching; AC LED; Power factor;

D O I：

10.1007/s10470-015-0527-x

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A high power factor (PF) AC LED driver with current glitch eliminated is presented in this paper. The current glitch is eliminated with a soft switching operation by using a self-adaptive load resistor. Thus, its lifespan is prolonged and the PF of the AC LED driver is improved. Without any control circuit, the proposed AC LED driver is suitable for integration. The proposed AC LED driver was fabricated in a 0.25 A mu m BCD process and tested with five strings LED . The experimental results show that the PF is 0.998 (0.997) with 5.1 % (7.2 %) total harmonic distortion under 19 W 110 V/AC (220 V/AC) condition.

引用

页码：209 / 216

页数：8

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