Sensorless current mode control - an observer-based technique for Dc-Dc converters

Pallab Midya, Matthew Greuel, Philip T. Krein

Research output: Contribution to journalConference articlepeer-review


Sensorless current mode (SCM) control is an observer method that provides the operating benefits of current mode control without current sensing. SCM has significant advantages over both conventional peak and average current-mode control techniques in noise susceptibility and dynamic range. The method supports both line and bulk load regulation, and reduces control complexity to a single loop. The static and dynamic performance of SCM are analyzed and verified experimentally for dc-dc converters. Performance in continuous and discontinuous modes compares favorably to conventional techniques when noise is not a factor, but is significantly better when noise and wide load ranges are a concern. The SCM method encompasses one-cycle control as a special case; the general SCM method is introduced here as a public domain control technique.

Original languageEnglish (US)
Pages (from-to)197-202
Number of pages6
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
StatePublished - 1997
Externally publishedYes
EventProceedings of the 1997 28th Annual IEEE Power Electronics Specialists Conference, PESC. Part 1 (of 2) - St.Louis, CA, USA
Duration: Jun 23 1997Jun 26 1997

ASJC Scopus subject areas

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


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