| HB-LED驱动用恒流Buck变流器控制方法研究 |
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| 引用本文： | 裴倩,王正仕,陈辉明,吴新科.HB-LED驱动用恒流Buck变流器控制方法研究[J].电子技术应用,2010,36(2). |
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| 作者姓名： | 裴倩 王正仕 陈辉明 吴新科 |
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| 作者单位： | 浙江大学电气工程学院,浙江,杭州,310027 |
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| 摘 要： | 提出了一种适用于浮地输出Buck型HB-LED驱动器的恒流控制方法,详细分析了这种新型控制方法恒流Buck变流器的工作原理,通过控制电感峰值电流和电感电流纹波量恒定来达到输出电流平均值恒定的目的。以UC3843控制的75W Buck恒流变流器为例进行了实验研究,该变流器能够获得宽输出电压范围内约±3%的恒流精度,满足HB-LED驱动的性能要求。
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| 关 键 词： | 浮地输出 Buck 恒流输出 纹波电流控制 |
Research on the control method of constant current source Buck converter for HB-LED |
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| PEI Qian,WANG Zheng Shi,CHEN Hui Ming,WU Xin Ke.Research on the control method of constant current source Buck converter for HB-LED[J].Application of Electronic Technique,2010,36(2). |
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| Authors: | PEI Qian WANG Zheng Shi CHEN Hui Ming WU Xin Ke |
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| Affiliation: | PEI Qian,WANG Zheng Shi,CHEN Hui Ming,WU Xin Ke(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | A new constant output current control is proposed for the output floating Buck converter in this paper,which provides a simple constant-current driver for HB-LED.The operation principle of the floating Buck converter with proposed control is presented in detail,through the constant average output current when the peak current and the ripple current of inductor are constant.The design principle and method of the proposed constant-current Buck converter based on UC3843 PWM controller are presented.Laboratory ... |
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| Keywords: | Buck |
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