Null audio susceptibility of current-mode buck converters: Small signal and large signal perspectives

J. T. Mossoba, P. T. Krein

Research output: Contribution to journalConference articlepeer-review

Abstract

Small signal modeling of sensorless current-mode (SCM) control for dc-dc converters reveals a method of achieving zero (null) audio susceptibility. Similar results are known for peak current-mode (PCM) control. The true line-to-output responses of such SCM and PCM "null"-designs are demonstrated to be non-zero for non-small signal disturbances. Definitions of large signal null audio susceptibility are proposed beyond the linearized small signal paradigm. Investigations of true large signal null audio susceptibility controllers are compared with the SCM method for buck converters.

Original languageEnglish (US)
Pages (from-to)1605-1611
Number of pages7
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
Volume4
StatePublished - 2003
Event2003 IEEE 34th Annual Power Electronics Specialists Conference - Acapulco, NM, United States
Duration: Jun 15 2003Jun 19 2003

Keywords

  • Control
  • Dc-dc converter
  • Large signal model
  • Null audio susceptibility
  • Peak current-mode
  • Sensorless current-mode
  • Small signal model

ASJC Scopus subject areas

  • Modeling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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