| 开关电源输入滤波器的阻抗匹配 |
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| 引用本文： | 张逸成,韦华,朱学军,姚勇涛,沈玉琢.开关电源输入滤波器的阻抗匹配[J].低压电器,2006(12):3-6. |
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| 作者姓名： | 张逸成 韦华 朱学军 姚勇涛 沈玉琢 |
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| 作者单位： | 同济大学,电气工程系,上海,200331 |
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| 基金项目： | 国家高技术研究发展计划(863)基金资助项目(2005AA501060) |
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| 摘 要： | 在设计和选用电源滤波器的过程中系统工程师发现,加了滤波器以后作用不大,甚至会发生某些频段的噪声变大。造成该现象的主要原因之一是电源滤波器的输出阻抗和开关电源输入阻抗之间相互匹配。分析了滤波器输出阻抗和开关电源输入阻抗匹配的原因,并给出了开关电源输入阻抗值的测量方法。
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| 关 键 词： | 电源滤波器 阻抗匹配 开关电源 插入损耗 |
| 文章编号： | 1001-5531(2006)12-0003-04 |
| 收稿时间： | 04 26 2006 12:00AM |
| 修稿时间： | 2006年4月26日 |
Study on Impedance Match of Switching Power Supply Filter |
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| ZHANG Yi-cheng,WEI Hua,ZHU Xue-jun,YAO Yong-tao,SHEN Yu-zhuo.Study on Impedance Match of Switching Power Supply Filter[J].Low Voltage Apparatus,2006(12):3-6. |
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| Authors: | ZHANG Yi-cheng WEI Hua ZHU Xue-jun YAO Yong-tao SHEN Yu-zhuo |
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| Affiliation: | Department of Electrical Engineering, Tongji University, Shanghai 200331, China |
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| Abstract: | During process of design and selection of power supply filter, system engineers find that sometime, the adding of power supply filter have no proper role, but even make more noise at some critical frequency section. One of the main reasons is that the input impedance of the switching power supply matches with the output impe - dance of the power supply filter. And the reason of above mentioned matching was analyzed, while the measuring method of the input impedance value of the switching power supply was given out. |
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| Keywords: | power supply filter impedance matching switching power supply insertion loss |
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