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Modeling and analysis of a self-oscillating peak-current controlled flyback converter

Research output: Other conference contributionPaper, poster or abstractScientific

Details

Original languageEnglish
Pages960-965
Number of pages6
DOIs
Publication statusPublished - 1 Dec 2001
Externally publishedYes
Publication typeNot Eligible
Event27th Annual Conference of the IEEE Industrial Electronics Society IECON'2001 - Denver, CO, United States
Duration: 29 Nov 20012 Dec 2001

Conference

Conference27th Annual Conference of the IEEE Industrial Electronics Society IECON'2001
CountryUnited States
CityDenver, CO
Period29/11/012/12/01

Abstract

Modeling of a self-oscillating peak-current controlled flyback converter is presented. Transfer functions describing the output dynamics of a flyback converter are obtained by applying partial derivatives to the nonlinear state equations that are derived using proposed modeling method. Loop gain of a practical 3-W flyback converter was measured and compared to predictions. The time delay in boundary mode showed not significant influence on the converter dynamics in the load range of interest. The non-minimum phase characteristics of a flyback converter will limit the achievable controller bandwidth also in a variable-frequency operation similarly to the fixed-frequency operation in CICM and DICM.