一种用于并联LED驱动的分时复用控制电路Parallel LED Driver with Time-Division Rotation
何业军,尹婷,许晶
He Yejun,Yin Ting,Xu Jing
摘要(Abstract):
提出一种基于分时复用的LED驱动电路,用于提高并联多支路LED电流的一致性。该电路提供两路输出,对基准电流进行1000倍的放大,基准电流在1~100μA内线性可调。仿真结果显示,在此工作范围内,两路并联LED电流平均值基本一致。
This paper proposed an idea of a parallel LED driver circuit with time-division rotation for better match. This circuit provided two channel outputs for LED driver. The output current is 1000 times of input reference current which could be adjusted continuously from 1u A to 100 u A. The simulation results showed that within the working scope,the average current of each channel is basically the same.
关键词(KeyWords):
LED;驱动;背光;分时;复用;匹配
LED;driver;back-light;time-division;rotation;match
基金项目(Foundation): 广东省中山市科技项目《用于多个并联支路LED驱动电源的分时复用控制电路的研制》(No.20123A347)
作者(Author):
何业军,尹婷,许晶
He Yejun,Yin Ting,Xu Jing
参考文献(References):
- [1]方佩敏.LED的发展概况[J].今日电子,2006(8):37-41.
- [2]吕强,刘金龙.浅析一种LED调光方式[J].照明工程学报,2010,21(增刊):82-84.
- [3]平板电脑分辨率提高直下式LED成长增速{J].消费电子,2012(1):71.
- [4]李秀真.超薄液晶电视用LED背光模组的设计[J].现代显示,2010(12):40-49.
- [5]洪峰,满瑞.高亮度LED驱动芯片概述[J].数字通信,2011,38(2):71-74.
- [6]颜重光.背光及照明用LED驱动IC技术市场分析[J].电子产品世界,2008(10):39-44.
- [7]程安宁,王晋,尚相荣.白光LED的PWM驱动方式分析[J].电子设计工程,2010,18(2):109-111.
- [8]王新.中大尺寸LCD背光应用的LED驱动方案[J].电子产品世界,2007(1):97-100.
- [9]贾金萍,张志东.LED背光源亮度均匀性的研究[J].现代显示,2006(4):19-22.
- [10]Brian Law.针对便携式应用的LED驱动解决方案[J].电子产品世界,2008(3):131-133.
- [11]Huang-Jen Chiu,Shih-Jen Cheng.LED Backlight Driving System for Large-Scale LCD Panels[J].IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS,VOL.54,NO.5,OCTOBER 2007:2751-2760.
- [12]Huang-Jen Chiu,Yu-Kang Lo.A High-Efficiency Dimmable LED Driver for Low-Power Lighting Applications[J].IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS,2010,57(2):735-743.
- [13]张普雷,史永胜,史耀华.大功率背光源用LED驱动电路的研究现状与进展[J].液晶与显示,2010,25(1):68-74.
- [14]刘波,章小兵.使用多色LED补色的背光源[J].液晶与显示,2010,25(5):699-701.
- [15]Behzad Razavi.Design of Analog CMOS Integrated Circuit[M].Singapore:Mc Graw-Hill Higher Educaion,2001:296-305.
- [16]刘敬伟,王刚,马丽.大尺寸液晶电视用LED背光源的设计与制作[J].液晶与显示,2006,21(5):539-544.
- [17]乔中莲,杨东升,刘飞.液晶电视用低功耗LED背光模组设计{J].液晶与显示,2011,26(4):455-459.
- [18]Yuequan Hu,Milan M.Jovanovic.LED Driver With SelfAdaptive Drive Voltage[J].IEEE TRANSACTIONS ON POWER ELECTRONICS,2008,23(6):3116-3125.