基于EMI分析的数模混合PCB设计

作者：李小荣1，张涛2，王健1,2* 日期：2010-06-28/span> 浏览：3529 查看PDF文档

基于EMI分析的数模混合PCB设计
李小荣1，张涛2，王健1,2*
(1.杭州电子科技大学 电子信息学院，浙江 杭州 310018; 2.聚光科技(杭州)有限公司,浙江 杭州 310052)

摘要：数模混合印制电路板（PCB）设计的重点和难点是电磁干扰（EMI）抑制。针对这一问题，从数模混合PCB中EMI产生的原因出发，分析了如何从干扰源和耦合路径方面解决数模混合PCB中的EMI问题，总结了混合电路PCB的设计原则，通过工程实践给出了综合运用设计规则与SIwave仿真工具进行混合PCB设计的方法与步骤。实践结果证明，基于EMI分析的数模混合PCB设计方法可行且高效。
关键词：数模混合；印制电路板；电磁干扰；去耦电容；SIwave
中图分类号：TN401文献标识码：A文章编号：1001-4551(2010)05-0115-05

Printed circuit board design of digital-analog hybrid circuits
based on EMI analysis

LI Xiao-rong1, ZHANG Tao2, WANG Jian1,2
(1. College of Electronic Information, Hangzhou Dianzi University, Hangzhou 310018, China;
2. Focused Phontonics (Hangzhou)Inc., Hangzhou 310052, China)

Abstract: The focus and difficulty of mixed printed circuit board(PCB) design is electro magnetic interference(EMI) suppression. Aiming at the problem, the main EMI sources and coupling paths were discussed and design principles of digital-analog hybrid PCB were proposed through analyzing the solution of reducing EMI. By engineering practices,the design approach and procedures by using design rules and simulation tool(SIwave) were given. The practice result shows that the design method is feasible and efficient.
Key words: digital-analog hybrid; printed circuit board(PCB); electromagnetic interference(EMI); decoupling capacitor; SIwave