一种低输出纹波的LED照明驱动器的设计Design of A LED Lighting Driver with Low Output Ripple
孙晨琨,陈强
SUN Chenkun,CHEN Qiang
摘要(Abstract)：
LED照明驱动器前级一般都需要进行功率因数校正(PFC),目前常用的是单级PFC控制,单级PFC结构简单但输出含有大量的低频纹波,严重影响了LED驱动器的使用寿命,因此需要对LED输出电流纹波进行处理。我们设计了一款8.5 W LED驱动器,采用单级PFC结构,并在输出端增加有源纹波补偿电路,分析了该驱动器各部分电路的工作原理,并制作了样机,进行了实验。实验结果表明:所设计的LED驱动器拓扑结构简单,输出纹波小,效率高。
In general,the preceding stage of the LED lighting driver needs the power factor correction.Because of its simple structure,the single level PFC is used to correct the power factor. However,the output contains a lot of low ripple,which seriously affect the life of the LED driver. We need to dispose the LED output current ripple,due to the disadvantage of the single level PFC. In this paper,we design a 8.5 W LED driver,which uses a single stage PFC structure,and the active ripple compensation circuit is added in the output end. The working principle of each part of the drive circuit is analyzed,the prototype is made and the experiment is carried out. Experiment results show that the designed LED driver topology is simple,the output ripple is small and the efficiency is high
关键词(KeyWords)：
LED;照明;驱动器;纹波;设计;电路;功率因数校正
LED;lighting;driver;ripple;design;circuit;PFC
基金项目(Foundation): 国家自然基金委专项(项目号:11347219)
作者(Author):
孙晨琨,陈强
SUN Chenkun,CHEN Qiang
参考文献(References)：
- [1]林方盛,蒋晓波,江磊,等.LED驱动电源综述[J].照明工程学报,2012,23(增刊):96-101.
- [2]胡进,吕征宇,林辉品,等.LED照明应用现状特征及驱动技术发展综述[J].电源学报,2016:1-17.
- [3]PRESSMAN Abraham I,BILLINGS Keith,MOREY Taylor.开关电源设计[M].第3版.北京:电子工业出版社,2010.
- [4]李帆,沈艳霞,张君继,等.一种新型高效LED驱动电源设计[J].电源技术,2013,37(8):1425-1428.
- [5]巢时斌,丘东元,张波.LED驱动方式分析及性能比较[J].电气应用,2011(14):40-44.
- [6]姜宇,郑柱,何畅芳,等.基于BP9022A的LED驱动电源高频变压器的设计[J].广西物理,2015(4):18-22.
- [7]张玲琍.Buck型LED驱动电路中电感器的选择[J].电源技术应用,2014(7):21-23.
- [8]周锦荣,黄闻铭.高功率因数LED恒流可调驱动电源设计[J].电子技术应用,2015,41(8):120-123.
- [9]胡力元,闫斌,刘廷章.大功率LED灯具的单级PFC恒流驱动及模拟调光技术的研究[J].电测与仪表,2014,51(13):93-96.
- [10]李振森.单级PFC反激式LED驱动电源设计与研究[D].杭州:杭州电子科技大学,2009.