电子器件Issue(3)：422-425,4.DOI:10.3969/j.issn.1005-9490.2014.03.010
基于有限元方法的ARM11核心板电源完整性分析
Power Integrity Analysis of ARM11 Core Board Based on FEM
沈敏 1吴明赞 1李竹1
作者信息
- 1. 南京理工大学自动化学院，南京210094
- 折叠
摘要
Abstract
ARM11 core board belongs to high-speed circuit board,and during the design we need to reduce input impedance of PDN ( Power Delivery Network ) to improve power integrity. SSN ( Simultaneous Switching Noise ) produced by 10 transistors and DC/AC Characteristics of PDN before and after adjustment are simulated based on FEM,the simulation results indicate that chip power voltage fluctuation reaches 7. 9% when 10 transistors switch simultaneously;DC voltage of 1. 2 V PDN is increased from 1. 17 V to 1. 18 V,current density of PDN is reduced integrally;Resonance phenomenon of PDN is weakened at the frequency of 397 MHz;So chip power voltage hasn't satisfied the requirements when 10 transistors switch simultaneously,after PDN is adjusted,the input impedance and voltage fluctuation of PDN is reduced finally.关键词
电源完整性/PDN/有限元方法/SSN/谐振Key words
power integrity/PDN/FEM/SSN/resonance分类
信息技术与安全科学引用本文复制引用
沈敏,吴明赞,李竹..基于有限元方法的ARM11核心板电源完整性分析[J].电子器件,2014,(3):422-425,4.
