Series-parallel approaches and clamp methods for extreme dynamic response with advanced digital loads

Philip T. Krein, Jonathan W. Kimball

Research output: Contribution to journalConference articlepeer-review

Abstract

The series-input parallel-output dc-dc converter combination provides inherent sharing among the converters. With conventional controls, however, this sharing is unstable. Recent literature work proposes complicated feedback loops to correct the problem, at the cost of dynamic performance. This paper shows that a simple sensorless current mode control stabilizes sharing with fast dynamics suitable for advanced digital loads. With this control in place, a "super-matched" current sharing control emerges. Sharing occurs through transients, limited only by the energy limits of the converters. The control approach has considerable promise for high-performance voltage regulator modules. For even faster response, clamping techniques are proposed.

Original languageEnglish (US)
Pages (from-to)85-88
Number of pages4
JournalProceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL
StatePublished - Dec 1 2004
EventProceedings of the 2004 IEEE Workshop on Computers in Power Electronics, COMPEL'04 - Urbana, IL, United States
Duration: Aug 15 2004Aug 18 2004

ASJC Scopus subject areas

  • Engineering(all)

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