Fast-Scale Instability of Single-Stage Power-Factor-Correction Power Supplies

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Original languageEnglish
Pages (from-to)204-213
Journal / PublicationIEEE Transactions on Circuits and Systems I: Regular Papers
Issue number1
Online published16 Jan 2006
Publication statusPublished - Jan 2006
Externally publishedYes


This paper describes the fast-scale bifurcation phenomena of a single-stage power-factor-correction (PFC) power supply which is a cost effective design for low-power applications. The circuit employs a cascade configuration of a boost converter and a forward converter, which share an active switch and operate in discontinuous conduction mode, to provide input PFC and tight output regulation. Main results are illustrated by "exact" circuit simulations as well as theoretical analysis based on the use of Jacobians. This work provides a convenient means of predicting stability boundaries which can facilitate the selection of practical parameter values for maintaining stable operation. © 2006 IEEE.

Research Area(s)

  • Bifurcation, dc-dc converter, instability, power factor correction (PFC), single-stage converter