| 开关电源印刷电路板电磁兼容问题的研究 |
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| 引用本文： | 吴昕,钱照明,庞敏熙.开关电源印刷电路板电磁兼容问题的研究[J].电子与信息学报,2001,23(2):181-186. |
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| 作者姓名： | 吴昕 钱照明 庞敏熙 |
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| 作者单位： | 1. 浙江大学电机工程学系
2. 香港大学电机电子工程系 |
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| 摘 要： | 印刷线路间的串扰问题是影响开关电源传导干扰水平的主要因素之一，而旨在降低串扰水平的布线设计却一直是设计中难点。本文提出了一种基于电场分析的开关电源印刷电路板EMC辅助设计的思想方法，其基本思想是以干扰强度分布图为参考选择布线区域，以耦合系数的实时计算结果为指导及时调整线布设计，帮助工程师在印刷线路板的设计阶段就把潜在的干扰抑制在尽可能低的水平上。计算和实验的结果证实了这种思想的可行性。
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| 关 键 词： | 电磁干扰 印刷电路板 开关电源 电磁兼容 |
| 收稿时间： | 1999-1-26 |
| 修稿时间： | 1999年1月26日 |
STUDY IN ELECTROMAGNETIC COMPATIBILITY ON PRINTED CIRCUIT BOARD OF SWITCHING POWER SUPPLY |
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| Wu Xin,Qian Zhaoming,Pang Minxi.STUDY IN ELECTROMAGNETIC COMPATIBILITY ON PRINTED CIRCUIT BOARD OF SWITCHING POWER SUPPLY[J].Journal of Electronics & Information Technology,2001,23(2):181-186. |
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| Authors: | Wu Xin Qian Zhaoming Pang Minxi |
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| Affiliation: | Department of Electrical Engineering Zhejiang University Hangzhou 310027 China;Department of Electrical and Electronic Engineering Hongkong University Hongkong China |
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| Abstract: | Crosstalk between conductor traces on printed circuit board is one primary source of EMI in switching power supply. Field analysis is carried out to study the electric field on PCB. Simulation and measured emission map offer valuable visual aids to PCB designer, coupling index is introduced to indicate coupling Ievel between two traces. Based on these emission maps and coupling index PCB designer can arrange critical trace in suitable location, crosstalk problem between traces can be suppressed during PCB design stage. |
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| Keywords: | EMI Crosstalk PCB Layout SPS |
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