Dual current-mode control for single-switch two-output switching power converters

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

Research output: Journal article publicationConference articleAcademic researchpeer-review

Abstract

A novel method for programming current in dc/dc converters operating in discontinuous conduction mode is described in this paper. The control variable is the product of the square of the duty cyle and the switching period, i.e., D 2T, which is directly proportional to input and output currents of a discontinuous-mode converter. A method of controlling D 2T is applied to converters that utilize one switch (or one set of synchronous switches) for achieving two control functions. In particular a single-switch two-output boost converter, in which a continuous-mode converter and a discontinuous-mode converter share one active switch, is studied. In this system, current-mode control is used to regulate the output voltage of the continuous-mode converter and the proposed D 2T control is used to regulate the other discontinuous-mode converter. The result is a generic current-mode controlled dual-output converter.
Original languageEnglish
Pages (from-to)23-27
Number of pages5
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
Volume1
Publication statusPublished - 29 Nov 2004
Event2004 IEEE 35th Annual Power Electronics Specialists Conference, PESC04 - Aachen, Germany
Duration: 20 Jun 200425 Jun 2004

Keywords

  • Current-mode control
  • dc/dc converter
  • Discontinuous conduction mode
  • Dual-output converter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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