| 一种有稳定输出的单端反激式LED开关电源的设计 |
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| 引用本文： | 刘毅莉,付贤松,张金建,牛萍娟.一种有稳定输出的单端反激式LED开关电源的设计[J].天津工业大学学报,2012,31(3):52-55. |
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| 作者姓名： | 刘毅莉 付贤松 张金建 牛萍娟 |
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| 作者单位： | 1. 天津工业大学电子与信息工程学院,天津300387;天津工业大学大功率半导体照明应用系统教育部工程研究中心,天津300387
2. 天津工业大学电气工程与自动化学院,天津300387;天津工业大学大功率半导体照明应用系统教育部工程研究中心,天津300387;天津工业大学电工电能新技术天津市重点实验室,天津300387 |
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| 基金项目： | 国家科技支撑计划课题，国家高技术研究发展计划(863计划) |
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| 摘 要： | 基于PWM恒流模式的驱动芯片L6561,设计了一种有稳定输出的单端反激式开关电源.所设计的电路包含单端反激式拓扑结构和基于峰值电流的PWM拓扑结构,输入电压范围为85~265 VAC,能输出15 V稳定电压和最大2 A输出电流.这种新型的小功率的单端反激转换器不仅适用于手机、办公设备、离线式电池充电器等,还可以用作LED照明.通过测试可知,该单端反激转换器能驱动5颗LED,电路输出纹波率为1.33%,电源转换效率高达85.71%,同时此电路可以确保输出稳定.
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| 关 键 词： | 电流型PWM转换器 LED驱动 单端反激式 开关电源 稳定输出 |
A steady output single-ended flyback LED driver power supply |
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| LIU Yi-li
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FU Xian-song
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ZHANG Jin-jian
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NIU Ping-juan.A steady output single-ended flyback LED driver power supply[J].Journal of Tianjin Polytechnic University,2012,31(3):52-55. |
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| Authors: | LIU Yi-li FU Xian-song ZHANG Jin-jian NIU Ping-juan |
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| Affiliation: | 2,3,4(1.School of Electronics and Information Engineering,Tianjin Polytechnic University,Tianjin 300387,China;2.School of Electrical Engineering and Automation,Tianjin Polytechnic University,Tianjin 300387,China;3.Engineering Research Center of High Power Solid State Lighting Application System,Ministry of Education,Tianjin Polytechnic University,Tianjin 300387,China;4.Key Laboratory of Advanced Electrical Engineering and Energy Technology,Tianjin Polytechnic University,Tianjin 300387,China) |
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| Abstract: | A steady output single-ended flyback switching power supply is designed by using L6561 current mode PWM controller.The designed circuit consists of single-ended flyback topology and based on the peak current PWM technology.The circuit has 85-265 VAC input range and about 15 V/2 A output drive capability.Based on the specific chip L6561,the novel single-ended flyback AC/DC converting circuit adapts for mobile or office equipment,off-line battery chargers,and it can also used as LED lighting equipment.According to testing the signal waveform,the efficiency is up to 85.71%;and the error rate of the output voltage is 1.33%.Meanwhile,it can ensure the output stable. |
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| Keywords: | current PWM controller LED driver single-ended flyback switching power supply steady output |
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