| 采用UC3844的反激式开关电源反馈回路的改进与设计 |
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| 引用本文： | 陈懿,童朝南,韩建军.采用UC3844的反激式开关电源反馈回路的改进与设计[J].电子技术应用,2008,34(6). |
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| 作者姓名： | 陈懿 童朝南 韩建军 |
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| 作者单位： | 1. 北京科技大学信息工程学院,北京,100083
2. 北京科技大学冶金与生态工程学院,北京,100083 |
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| 摘 要： | 介绍了一种基于PWM控制芯片UC3844的反激式开关电源的反馈回路改进设计,详细讨论了新型反馈电路的工作过程及设计方案,采用光耦PC817和电压基准TL431组成反馈网络。该电源性能优良,具有结构简单,稳压效果好,负载调整率高等优点,具有很高的生产应用价值。
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| 关 键 词： | UC3844 反馈电路 反激式开关电源 |
A new feedback circuit of the flyback switching mode power supply based on UC3844 |
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| CHEN Yi,TONG Chao Nan,HAN Jian Jun.A new feedback circuit of the flyback switching mode power supply based on UC3844[J].Application of Electronic Technique,2008,34(6). |
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| Authors: | CHEN Yi TONG Chao Nan HAN Jian Jun |
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| Abstract: | A feedback circuit based on PWM controller UC3844 of flyback switching mode power supply is presented. This pa-per analyzes the operation course and design of a novel feedback circuit. This feedback circuit is made of optical coupler PC817 and TL431. This power supply has good performance such as effortless circuit diagram , high voltage stability, good load adjustment rate and so on, and has better application value. |
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| Keywords: | UC3844 |
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