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| 基于LM3404实现LED低纹波恒流电源研究 | |
| 引用本文： | 柏余,朱忠尼,屈建国,贾月朋. 基于LM3404实现LED低纹波恒流电源研究[J]. 空军雷达学院学报, 2012, 0(4): 280-282 |
| 作者姓名： | 柏余 朱忠尼 屈建国 贾月朋 |
| 作者单位： | 1. 空军预警学院研究生管理大队,武汉430019 2. 空军预警学院五系,武汉430019 3. 93656部队,北京101114 |
| 摘 要： | 为消除LED驱动电源输出的高纹波电流对大功率LED寿命的影响,实现大功率LED的低纹波恒流驱动,提出一种以Buck变换器为主电路、LM3404为主控芯片,同时采用有源纹波补偿的方法,并在此基础上对电路参数进行了设计,构建了基于LM3404芯片的实验电路.实验结果表明:该方法能够有效降低LED灯的纹波电流,实现低纹波恒流驱动 |
| 关 键 词： | LED低纹波恒流电源 LM3404芯片 纹波补偿 |
Implementation of LED Lower Ripple Constant Current Source With LM3404 Chip |
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| BAI Yu,ZHU Zhong-ni,QU Jian-guo,JIA Yue-peng. Implementation of LED Lower Ripple Constant Current Source With LM3404 Chip[J]. Journal of Air Force Radar Academy, 2012, 0(4): 280-282 | |
| Authors: | BAI Yu ZHU Zhong-ni QU Jian-guo JIA Yue-peng |
| Affiliation: | 1.Department of Graduate Management,Air Force Early Warning Academy,Wuhan 430019,China;2.No.5 Department,Air Force Early Warning Academy,Wuhan 430019,China;3.93656 Unit of the PLA,Beijing 101114,China) |
| Abstract: | To eliminate the influence of the LED driving power’s high ripple current on the high-power LED’s service life,and to implement low ripple constant current driving of the high-power LED,this paper proposes a scheme that a Buck converter is taken as the main circuit,the LM3404 as the master control DSP,and simultaneously the active ripple compensation is employed,based on which,the corresponding circuit parameters are designed and the experimental circuit with LM3404 chip is set up.Experimental results show that the proposed scheme could reduce the ripple current of LED lights and implement the low ripple constant current driving. |
| Keywords: | LED low ripple constant current source LM3404 chip ripple compensation |
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