| 用于大功率LED驱动的单端反激恒流源设计 |
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| 引用本文： | 李大伟,邓翔,杨善水.用于大功率LED驱动的单端反激恒流源设计[J].电力电子技术,2009,43(7). |
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| 作者姓名： | 李大伟 邓翔 杨善水 |
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| 作者单位： | 南京航空航天大学,江苏,南京,210016 |
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| 摘 要： | 大功率发光二极管(Light Emitting Diode,简称LED)是一种可取代传统光源的新型光源,适合采用恒流驱动方式。设计了一种由220 V/50 Hz交流电供电的单端反激恒流源电路,对该恒流源电路进行了概要介绍,分析了电路的恒流原理并设计了反馈回路。该恒流源可为大功率LED提供恒定的电流,具有开路限压保护功能,满足对大功率LED的驱动要求。实验结果表明,采用该单端反激恒流源可驱动大功率LED。
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| 关 键 词： | 发光二极管 驱动/大功率发光二极管 单端反激 恒流源 |
Design of Constant Current Source based on Single Flyback for Driving High-power LED |
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| LI Da-wei,DENG Xiang,YANG Shan-shui.Design of Constant Current Source based on Single Flyback for Driving High-power LED[J].Power Electronics,2009,43(7). |
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| Authors: | LI Da-wei DENG Xiang YANG Shan-shui |
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| Affiliation: | Nanjing University of Aeronautics & Astronautics;Nanjing 210016;China |
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| Abstract: | The high power light emitting diode(LED) is viewed as a novel lamp-sourse which can replace the traditional ones.It is suitable to use the constant current drive.A constant current source based on single flyback with the power supply of 220 V/50 Hz AC is designed.The circuit is generally introduced,the principle of constant current is analyzed,and the feedback circuit is designed.This constant current source can provide the high-power LED with constant current,opening of circuit with voltage limiting functi... |
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| Keywords: | light emitting diode drive/high power light emitting diode single flyback constant current source |
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