Optimization of resistances in RL snubbers for power distribution network of integrated circuits

Ryosuke Yamagata, Kengo Iokibe, Yoshitaka Toyota

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Resonance of parasitic impedances in power distribution network (PDN) can increase leakage of the simultaneous switching noise current from integrated circuits (ICs) in the radio frequency (RF) range. The leaking SSN current is a major possible source of the conducted electromagnetic interference (EMI). A method have been proposed to control the PDN resonance by inserting a parallel RL circuit, RL snubber, to damp the resonance. In the previous work, the optimal resistance of the RL snubbers had been determined based on an equivalent circuit of PDN where equivalent series inductances (ESLs) on package had been neglected. In this work, the equivalent circuit was improved as the ESLs on package were taken into account because they were comparable to those on-board and not negligible. A method determining the optimal resistance was also improved. The RL snubbers were applied with the improved optimal resistance to a typical PDN. Effects of the RL snubbers in reducing the RF power current and in improving the power integrity were demonstrated in circuit simulations. Results of the demonstration confirmed that the improved method for optimal resistance gives more EMI reduction and better PI than the method in the previous work.

Original languageEnglish
Title of host publication2013 International Symposium on Electromagnetic Theory, EMTS 2013 - Proceedings
Pages226-229
Number of pages4
Publication statusPublished - Sep 4 2013
Event2013 21st International Symposium on Electromagnetic Theory, EMTS 2013 - Hiroshima, Japan
Duration: May 20 2013May 24 2013

Publication series

Name2013 International Symposium on Electromagnetic Theory, EMTS 2013 - Proceedings

Other

Other2013 21st International Symposium on Electromagnetic Theory, EMTS 2013
CountryJapan
CityHiroshima
Period5/20/135/24/13

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Optimization of resistances in RL snubbers for power distribution network of integrated circuits'. Together they form a unique fingerprint.

  • Cite this

    Yamagata, R., Iokibe, K., & Toyota, Y. (2013). Optimization of resistances in RL snubbers for power distribution network of integrated circuits. In 2013 International Symposium on Electromagnetic Theory, EMTS 2013 - Proceedings (pp. 226-229). [6565720] (2013 International Symposium on Electromagnetic Theory, EMTS 2013 - Proceedings).