| 高频开关电源功率变压器的漏感 |
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| 引用本文： | 刘燕,王京梅,兰中文.高频开关电源功率变压器的漏感[J].磁性材料及器件,2006,37(5):54-55,60. |
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| 作者姓名： | 刘燕 王京梅 兰中文 |
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| 作者单位： | 电子科技大学,电子薄膜与集成器件国家重点实验室,四川,成都,610054;电子科技大学,电子薄膜与集成器件国家重点实验室,四川,成都,610054;电子科技大学,电子薄膜与集成器件国家重点实验室,四川,成都,610054 |
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| 摘 要： | 随着开关电源的日益广泛应用,电源的高频化、小型化等导致电磁干扰(EMI)问题在大多数应用环境中十分突出。作为开关电源核心部件的功率变压器的漏感是高频开关电源的主要干扰源之一。论述了高频开关电源中与功率变压器漏感有关的电磁干扰,分析了漏感产生的原因,讨论了漏感的计算方法,并给出了测量漏感的常用方法。
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| 关 键 词： | 开关电源 功率变压器 漏感 电磁干扰 |
| 文章编号： | 1001-3830（2006）05-0054-02 |
| 收稿时间： | 2005-12-31 |
| 修稿时间： | 2005-12-312006-05-23 |
Leakage Inductance of Power Transformer in High Frequency Switch Mode Power Supply |
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| LIU Yan,WANG Jing-mei,LAN Zhong-wen.Leakage Inductance of Power Transformer in High Frequency Switch Mode Power Supply[J].Journal of Magnetic Materials and Devices,2006,37(5):54-55,60. |
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| Authors: | LIU Yan WANG Jing-mei LAN Zhong-wen |
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| Affiliation: | State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China |
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| Abstract: | With the wide application of switch mode power supply(SMPS), electro-magnetic interference(EMI)has become an outstanding problem in many electrical systems. The leakage inductance of power transformer is one ofthe main interference sources in the circuit. In this paper, the EMI from the leakage inductance of power transformerwas described firstly. Then, the reason was analyzed why the leakage inductance had come into being, and thecalculation of leakage inductance was discussed. Finally, a common method for leakage inductance testing was given. |
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| Keywords: | switch mode power supply power transformer leakage inductance EMI |
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