Linear Equivalent Circuit and Current Source for I/O (LECCS-I/O) Modeling of IC Power Current for EMI Simulation

Hideki Osaka, Daisuke Tanaka, Osami Wada, Yoshitaka Toyota, Ryuji Koga

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In this paper, we describe how we modeled EMI noise from the power-pin current of an LSI that has two ports: a power-ground port and a driver output port. We called this the “Linear Equivalent Circuit and Current Source for I/O (LECCS-I/O)” model, and have evaluated it using the measured power current and power-ground impedance of a small-scale IC (74LVC04) under various combinations of loading capacitances and decoupling inductances. Results showed that up to 500 MHz, the LECCS-I/O model was able to predict peak and valley frequencies of the power current spectra within an error of 2. 5 MHz, and where the peak current error was less than 5dB. The application range of the LECCS-I/O model was valid where the shortest data duration was longer than twice the decay time constant of the power current under-damping waveform.

Original languageEnglish
Pages (from-to)517-524
Number of pages8
JournalJournal of Japan Institute of Electronics Packaging
Volume7
Issue number6
DOIs
Publication statusPublished - Jan 1 2004

Keywords

  • EMI
  • I/O
  • LECCS
  • Loading Dependency
  • Power Current Model
  • RF Power Current

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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