| 光强可调大功率LED开关电源的设计与研究(英文) |
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| 引用本文： | 卢忠,朱伟,梅进光,阮世平. 光强可调大功率LED开关电源的设计与研究(英文)[J]. 浙江科技学院学报, 2010, 22(6). DOI: 10.3969/j.issn.1671-8798.2010.06.006 |
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| 作者姓名： | 卢忠 朱伟 梅进光 阮世平 |
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| 作者单位： | 1. 浙江工业大学,理学院,杭州,310023
2. 浙江科技学院,理学院,杭州,310023 |
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| 基金项目： | Project supported by Scientific and Technological Innovation for College Students in Zhejiang Province(Higher Education,Education of Zhejiang Province(2009)30); Program of National Physics Experiment Teaching Center from Zhejiang University of Technology |
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| 摘 要： | 针对当今LED线性稳压源功耗高、体积大的不足,利用LM2575 DC/DC降压芯片设计了一种恒流驱动大功率LED的PWM开关电源。其发光效率在80%以上,且体积小、性能稳定、成本低,通过调节外部电位器可以改变驱动电流进而改变LED的发光强度。
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| 关 键 词： | 发光二极管 脉冲宽度调制 开关电源 恒流驱动 |
Research and design of switching power supply of intensity adjustable powerful LED |
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| LU Zhong,ZHU Wei,MEI Jin-guang,RUAN Shi-ping. Research and design of switching power supply of intensity adjustable powerful LED[J]. Journal of Zhejiang University of Science and Technology, 2010, 22(6). DOI: 10.3969/j.issn.1671-8798.2010.06.006 |
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| Authors: | LU Zhong ZHU Wei MEI Jin-guang RUAN Shi-ping |
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| Affiliation: | LU Zhong1,ZHU Wei2,MEI Jin-guang2,RUAN Shi-ping2(1.College of Science,Zhejiang University of Technology,Hangzhou 310023,China,2.School of Science,Zhejiang University of Science and Technology,China) |
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| Abstract: | Due to the disadvantages of the current linear regulated power supply for LED which has high power consumption and large volume,a PWM(pulse width modulation) switch power supply based on LM2575 DC/DC step-down chip has been designed with the characteristics of luminous efficiency of above 80%,small volume,steady performance,low cost.It is used to drive powerful LED by constant current which can be adjusted by regulating external potentiometer,and the light intensity of LED is also changeable. |
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| Keywords: | LED pulse width modulation switch power supply constant current driving |
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