| 小功率通用开关稳压电源的分析与设计 |
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| 引用本文： | 许志伟,谢卫才,林友杰,王志涛.小功率通用开关稳压电源的分析与设计[J].湖南工程学院学报(自然科学版),2010,20(1). |
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| 作者姓名： | 许志伟 谢卫才 林友杰 王志涛 |
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| 作者单位： | 湖南工程学院,电气信息学院,湘潭,411101 |
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| 摘 要： | 利用芯片TOP249Y为核心来设计开关电源电路,详细讨论了电路的工作原理和高频变压器的参数计算,输出整流滤波电路,稳压反馈电路.本设计电路效率很高,体积小,能省去工频变压器.同时实现输入欠压保护、过压保护、从外部设定极限电流、降低最大占空比等功能.
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| 关 键 词： | 开关电源 线性光耦合器PC817A 可调式精密并联稳压器TL431 |
The Analysis and Design of Low Power Universal Switching Power |
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| XU Zhi-wei,XIE Wei-cai,LIN You-jie,WANG Zhi-tao.The Analysis and Design of Low Power Universal Switching Power[J].Journal of Hunan Institute of Engineering(Natural Science Edition),2010,20(1). |
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| Authors: | XU Zhi-wei XIE Wei-cai LIN You-jie WANG Zhi-tao |
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| Institution: | College of Elect.and Information Engineering;Hunan Institute of Engineering;Xiangtan 411101;China |
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| Abstract: | A switching power supply circuit is designed by using the core chip TOP249Y in this paper.Then the working principle of the circuit,the parameters of high frequency transformer,the output rectifier filter circuit and the the voltage regulator feedback circuit are discussed in detail.The circuit is highly efficient and small,and the frequency transformer can be omitted.At the same time,it has functions of inputing under-voltage protection,over-voltage protection,current limit set from the outside and reducin... |
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| Keywords: | switching power supply linear optocouplersPC817A adjustable precision shunt regulator TL431 |
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