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Analysis and small-signal modeling of self-oscillating converters with applied switching delay

Research output: Other conference contributionPaper, poster or abstractScientific


Original languageEnglish
Number of pages7
Publication statusPublished - 1 Jan 2002
Externally publishedYes
Publication typeNot Eligible
Event17th Annual IEEE Applied Power Electronics Conference and Exposition - Dalas, TX, United States
Duration: 10 Mar 200214 Mar 2002


Conference17th Annual IEEE Applied Power Electronics Conference and Exposition
CountryUnited States
CityDalas, TX


This paper presents a consistent methodology to assess the effect of variable-frequency operation on the dynamics of DC/DC converters, which are commonly used in power-factor-correction and low-cost battery-charger applications. The self-oscillation is typically implemented using peak-current control in boundary mode operation with a deterministic delay. The modeling is based on the proper derivation of cycle-time and on-time constraints leading to full-order small-signal models predicting accurately the dynamical behavior of a converter. The effect of switching delay is found to be insignificant in the load level of concern both by predictions and experiments.

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