高速PCB板的电源布线设计

The Design of Power Line in High-Speed PCB

本文分析讨论了高速ＰＣＢ板上由于高频信号的干扰和走线宽度的减小而产生的电源噪声和压降，并提出了高速ＰＣＢ的电源模型，采用电源总线网络布线，选取合适的滤波电容，模拟数字地分开等几个简单有效的方法来解决高速ＰＣＢ板的噪声和压降问题。

This paper proposes a simple power model in high-speed PCB board, which based on the analysis of the power noise and voltage descent bringed by the interfere of the high frequency signal and diminish of the lines in high speed board . This paper also puts forward some methods , including adopting Power Network Bus , choosing appropriate filter capacitor and separating the analog and digital ground to solve these problems.