电源开关噪声耦合干扰高速信号的分析及优化方法研究

计算机工程与科学 ›› 2023, Vol. 45 ›› Issue (10): 1763-1769.

电源开关噪声耦合干扰高速信号的分析及优化方法研究

贡维1，李岩1，许泗强2，齐红玉2

(1．浪潮(山东)计算机科技有限公司，山东济南 250101；2．浪潮电子信息产业股份有限公司，山东济南 250101)

收稿日期:2022-08-31 修回日期:2023-01-19 接受日期:2023-10-25 出版日期:2023-10-25 发布日期:2023-10-17

Research on the analysis and optimization of power switch noise coupling interference on high-speed signals

GONG Wei1,LI Yan1,XU Si-qiang2,QI Hong-yu2

(1.Inspur (Shandong) Computer Technology Co.,Ltd.,Jinan 250101;
2.Inspur Electronic Information Industry Co.,Ltd.,Jinan 250101,China)

Received:2022-08-31 Revised:2023-01-19 Accepted:2023-10-25 Online:2023-10-25 Published:2023-10-17

摘要/Abstract

摘要： 在电子系统中，高速电路设计面临的问题，归根结底是噪声的问题。在实际的高速电路设计生产过程中，仿真模型与实际PCB的偏差、设计的不合理、PCB制板过程中产生的误差等因素，造成信号完整性和电源完整性问题缺乏系统深入的分析。针对此类问题，开展了电源开关噪声对高速信号产生耦合干扰的分析和优化方法研究。首先对信号完整性和电源完整性的理论进行介绍，进而针对某主板设计过程中存在的电源开关噪声耦合干扰高速信号的案例进行理论分析、示波器测试分析、Cadence仿真分析及优化验证，为该类问题提供一个系统的分析解决方案。

关键词: 信号完整性, 电源开关噪声, 高速信号

Abstract: In electronic systems, the problem faced by high-speed circuit design ultimately lies in noise. In the actual high-speed circuit design and production process, there are many factors that can cause problems with signal integrity and power integrity, such as deviations between simulation models and actual PCBs, unreasonable designs, and errors generated during PCB board manufacturing. To address these issues, we conduct research on the analysis and optimization of power switch noise coupling interference on high-speed signals. We first introduce the theory of signal integrity and power integrity, and then conduct theoretical analysis, oscilloscope testing analysis, Cadence simulation analysis, and optimization verification on a case where power switch noise coupling interference affects high-speed signals in a motherboard design process. This paper provides a systematic analysis and solution for similar problems.

Key words: signal integrity, power switching noise, high-speed signal

贡维, 李岩, 许泗强, 齐红玉. 电源开关噪声耦合干扰高速信号的分析及优化方法研究[J]. 计算机工程与科学, 2023, 45(10): 1763-1769.

GONG Wei, LI Yan, XU Si-qiang, QI Hong-yu. Research on the analysis and optimization of power switch noise coupling interference on high-speed signals[J]. Computer Engineering & Science, 2023, 45(10): 1763-1769.