Suppressing EMI of Switching Converters Using Self-Excitation-Chaos

Qingnan Li, Xiong Rui

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


A method of EMI reduction using spectral modification through self-excitation-chaos is proposed. We derived a second-order S-switching iterative map describing the dynamics of simple feedback buck switching regulator operating in continuous mode. Analysis of this map shows that chaos and bifurcations may occur at certain values of the input voltage. By making the converter operating in chaos, the simulation results demonstrate that a reduction of spectral peak and consequent spreading of the spectrum can be shown, and it will hardly influence to output voltage ripples.
Keyword: Self-Excitation-Chaos,Electromagnetic interference,Spectral modification
Original languageEnglish
Title of host publicationInternational Symposium on Electromagnetic Compatibility
Publication date2007
ISBN (Print)978-1-4244-1372-0
Publication statusPublished - 2007
Externally publishedYes
EventInternational Symposium on Electromagnetic Compatibility -
Duration: 1 Jan 2007 → …


ConferenceInternational Symposium on Electromagnetic Compatibility
Period01/01/2007 → …


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