| 大功率LED组合驱动设计 |
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| 引用本文： | 郭家辰,尤文捷,李扬,戴曙光.大功率LED组合驱动设计[J].光学仪器,2010,32(6):45-48. |
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| 作者姓名： | 郭家辰 尤文捷 李扬 戴曙光 |
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| 作者单位： | 上海理工大学光电信息与计算机工程学院,上海200093 |
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| 摘 要： | 分析了恒电压和恒流驱动发光二极管(LED)的发光特性,说明了大功率LED应采用恒流驱动的理由。设计采用2片LM3406组合设计了用于驱动大功率LED的恒流源电路,所设计的电路可以提供高达3A的驱动电流,并具有无级电流调节,过热保护,低电保护等特点。经测试效果良好。
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| 关 键 词： | 大功率LED 组合驱动 恒流源 无级调节 |
Design on combined-driving for high power LED |
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| GUO Jiachen,YOU Wenjie,LI Yang,DAI Shuguang.Design on combined-driving for high power LED[J].Optical Instruments,2010,32(6):45-48. |
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| Authors: | GUO Jiachen YOU Wenjie LI Yang DAI Shuguang |
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| Affiliation: | (School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China) |
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| Abstract: | This paper analyzed the characters of high power light-emitting diode （LED）, and explained why driving high power LED by constant current. By using two pieces of LM3406, the paper designed a constant current circuit to drive high power LED. The circuit can supply as high as 3A driving current, and it offer stepless current regulation, over temperature protection and low power shutdown, etc. It works well when testing. |
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| Keywords: | high power LED combined driving constant current stepless current regulation |
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