Physical Modeling of Saturated Common Mode Choke
Applied Physics
2026-02-04 v1 Materials Science
Abstract
Common mode chokes (CMCs) are conventional circuit elements performing several tasks, including noise suppression, hindering electromagnetic interference, providing signal integrity, and circuit protection. Much as they are widely used, their fundamental construction and description are often qualitative and lack an understanding of the underlying physical principles. We discuss the behavior of a commercial CMC based on the physical description of the superparamagnetic core and parasitic circuit elements. The results are validated using a DC bias current and an external magnetic field, which affect the magnetic properties. The behavior of the CMCs in the strongly non-linear regime is also described.
Cite
@article{arxiv.2504.01900,
title = {Physical Modeling of Saturated Common Mode Choke},
author = {Anna Takacs and Balazs Gyure-Garami and Adam Z. Abraham and Peter T. Benko and Norbert M. Nemes and Ferenc Simon and Bence Bernath},
journal= {arXiv preprint arXiv:2504.01900},
year = {2026}
}
Comments
7 pages, 6 figures