Radiated EMI Estimation from DC-DC Converters with Attached Cables Based on Terminal Equivalent Circuit Modeling

Satyajeet Shinde*, Kohei Masuda, Guangyao Shen, Abhishek Patnaik, Tamar Makharashvili, David Pommerenke, Victor Khilkevich

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


An equivalent two terminal model based on the Thevenin equivalents describes the common mode (CM) currents on the input and output side of two widely used types of dc-to-dc power converters - buck and boost. Thus, it describes a nonlinear circuit by a linear equivalent circuit. The maximized spectrum of the CM currents is extracted for converters with stochastic signals using a novel characterization procedure. The extracted Thevenin model is used in co-simulation combined with a full-wave electromagnetic solver to predict the radiated emissions from the system consisting of the shielded DC-DC converters with attached cables and a DC brushless motor as load. The results using the terminal model agree well with the measurements providing that the actual CM loads are within the range of CM loads used while obtaining the Thevenin equivalent circuit.

Original languageEnglish
Article number8234652
Pages (from-to)1769-1776
Number of pages8
JournalIEEE Transactions on Electromagnetic Compatibility
Issue number6
Publication statusPublished - 1 Dec 2018
Externally publishedYes


  • Characterization loads
  • co-simulation
  • DC-DC converter
  • radiated emissions
  • stochastic behavior
  • terminal model

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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