关键词: 电源分配网络, 电容器建模, 去耦电容器

Abstract:

A poorly designed power distribution network (PDN) may cause excessive power supply noise.This paper presents an accurate capacitor Spice modeling method based on S-parameter measurements and vector fitting method.Compared with the traditional Monte Carlo capacitor Spice modeling,this capacitor modeling method proves accurate and practical.In order to solve the re-design problem caused by manually choosing the number of decoupling capacitors,a decoupling capacitors selected algorithm based on maximum contrary point is proposed.

Key words:  power distribution network;capacitors modeling;decoupling capacitors