电源分布网络的快速建模与电容优化

Fast Modeling and Decoupling Capacitor Optimization for Power Distribution Network

电源分布网络(PDN)是电源完整性(PI)问题的核心内容,PDN的设计对高频高速集成电路(IC)的稳定性和可靠性具有重要的意义。随着集成电路的工作频率不断提高、电源电压的不断降低、以及集成度和复杂度的不断升高,PDN的建模与去耦电容优化也面临着越来越大的挑战。该文综述了PDN建模领域经典的阻抗计算方法,以及去耦电容优化领域常用的优化算法,总结了这些方法的优缺点以及作者团队在该领域的主要贡献,指出了当下该领域面临的主要问题和技术挑战,并对该领域的未来发展趋势作了简要讨论。

Power distribution network(PDN)is the core of the power integrity(PI)problems,and PDN design is significant to the stability and reliability of high-frequency and high-speed integrated circuits(ICs).With the increase in working frequency,the decrease of the supplying voltages,and the growth of integration and complexity of ICs,the modeling and decoupling capacitor(decap)optimization of PDN are also becoming more challenging.This paper reviews the classical impedance calculation methods in PDN modeling,as well as the commonly used algorithms for decap optimization,summarizes the advantages and disadvantages of these methods,and the research achievement of the author team,points out the main problems and technical challenges in this field,and briefly discusses the future development trend in this direction.