Spurious modulation on current-mode controlled DC/DC converters: An explanation for intermittent chaotic operation

Siu Chung Wong, Chi Kong Tse, K. C. Tam

Research output: Journal article publicationConference articleAcademic researchpeer-review

5 Citations (Scopus)


In this paper, we explain the mechanism that causes "intermittent" instability and chaos in a current-mode controlled switching converter. The circuit model used to study the phenomenon incorporates a coupling process through which a spurious signal is coupled to the current sensing and ramp compensation circuitry, resulting in a modulation of the compensation slope which causes the system to become unstable intermittently. We describe a way to find the parameter boundaries where intermittent chaotic operation emerges.
Original languageEnglish
JournalProceedings - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 6 Sep 2004
Event2004 IEEE International Symposium on Cirquits and Systems - Proceedings - Vancouver, BC, Canada
Duration: 23 May 200426 May 2004


  • Current-mode control
  • Intermittent chaos
  • Switching power converters

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this