Optimal Resistance Determination Method for RL Damper Circuits in Power Distribution Network of ICs
We investigated a method using parallel RL circuits inserted into power distribution network (PDN) of integrated circuits (ICs) to enhance the IC in EMI and PI performance.Optimal damping resistances of the parallel RL circuit were derived from a characteristic equation of an equivalent circuit of a partial PDN that contributed to PDN resonances dominantly.The parallel RL circuit with the optimal resistances damps the PDN resonances as quickly as possible and reduces peaks in simultaneous switching current that will cause EMI and in input impedance of PDN related to PI.We validated the parallel RL circuit with respect to EMI and PI performance of ICs numerically and experimentally.Results of these validation showed that the proposed method descend the simultaneous switching current at both chip-package-board and on-board resonant frequency.It is also confirmed that insertion of the parallel RL circuits into the power trace reduced the impedance peak due to the chip-package-board resonance.
Ryosuke Yamagata Kengo Iokibe Yoshitaka Toyota
Graduate School of Natural Science and Technology,Okayama University 3-1-1 Tsushima-naka,Kita-ku,Okayama 700-8530 Japan
国际会议
Asia-Pacific Conference on Environmental Electromagnetics (2012年第六届亚太环境电磁学会议(CEEM 2012))
上海
英文
222-225
2012-11-06（万方平台首次上网日期，不代表论文的发表时间）