| 基于LLC拓扑的宽电压输出LED驱动电源研究 |
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| 引用本文： | 陈越,吴新科,钱照明.基于LLC拓扑的宽电压输出LED驱动电源研究[J].电力电子技术,2011,45(3):79-81. |
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| 作者姓名： | 陈越 吴新科 钱照明 |
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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： | 半桥LLC谐振变流器作为中功率开关电源的最佳拓扑选择,通常应用在恒压输出场合中.针对用于LED驱动的高效率恒流电源的DC/DC部分,这里提出一种适用于宽范围输出的新设计方法,并给出设计流程,分析了对设计参数的影响和高效率优化.同时根据所述设计原则构建了一台140 w的半桥LLC变流器样机,经过参数优化,其在整个输出电压...
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| 关 键 词： | 驱动电源 宽范围输出 发光二极管 恒流 |
Research on Wide Range Output LED Driver Based on LLC Topology |
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| CHEN Yue,WU Xin-ke,QIAN Zhao-ming.Research on Wide Range Output LED Driver Based on LLC Topology[J].Power Electronics,2011,45(3):79-81. |
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| Authors: | CHEN Yue WU Xin-ke QIAN Zhao-ming |
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| Affiliation: | CHEN Yue,WU Xin-ke,QIAN Zhao-ming (Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | In medium power DC/DC converter application,half-bridge LLC resonant converter is the best choice.However,it is usually used in constant voltage output application.As for the DC/DC part in high efficiency LED driver,this paper proposes a new design methodology which is suitable for wide range output application.Design process,analysis and optimization of design parameters are also presented.According to the proposed design method,a 140 W prototype is designed.After optimization,the efficiency throughout all... |
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| Keywords: | driving power supply wide-range output light emitting diode constant current |
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