信息工程大学学报2024，Vol.25Issue(2)：133-138,6.DOI:10.3969/j.issn.1671-0673.2024.02.002
电源网络低频段S参数拓展方法
Low Frequency S-Parameter Extension Method of Power Network
摘要
Abstract
The cascaded S-parameter of the power network and the chip power model(CPM)can re-alize the time-domain noise simulation of the power supply,and complete the integrity design check of the power supply.At present,the S-parameter derived by some simulation tools in the AC imped-ance optimization process has the problem that the low frequency band cannot be covered,which af-fects the accuracy of the time-domain ripple simulation.If the S-parameter is extracted again,the simulation time will be increased and the simulation efficiency will be reduced.In order to solve this problem,this paper proposes a low frequency band expansion method of S-parameter of power net-work.Combining with the R-L model of voltage regulator module(VRM),it is deduced that the S-parameter of low frequency band can be extended by using the S-parameter at the lowest frequency point of the extracted S-parameter.The simulation and experimental results show that the accuracy of power ripple noise simulation in time domain is improved by 31％by expanding the S-parameter in low frequency band,and the S-parameter of the low frequency band directly borrows the value of the low frequency point from the extracted S parameter without repeated extraction.Under the configura-tion of 8 GB memory,the simulation time is saved by about 14％,and the simulation efficiency is improved.关键词
电源网络S参数/低频段S参数拓展/电源时域波形仿真/仿真效率Key words
S-parameters of power network impedance/low frequency band S-parameter expansion/time domain waveform simulation of power supply/simulation efficiency分类
信息技术与安全科学引用本文复制引用
赵豪兵,虎艳宾,李沛杰..电源网络低频段S参数拓展方法[J].信息工程大学学报,2024,25(2):133-138,6.基金项目
国家重点研发计划资助项目(2022YFB2901000) （2022YFB2901000）
