NDLI: Mixed-mode simulations to check stability of an adaptive constant on-time DC-DC converter

Content Provider	IEEE Xplore Digital Library
Author	Bizzarri, F. Brambilla, A. Saggini, S. Storti-Gajani, G.
Copyright Year	2013
Description	Author affiliation: Dept. of Electr., Manage. & Mech. Eng. (DIEGM), Univ. of Udine, Udine, Italy (Saggini, S.) \|\| Dipt. di Elettron., Inf. e Bioingegneria, Politec. di Milano, Milan, Italy (Bizzarri, F.; Brambilla, A.; Storti-Gajani, G.)
Abstract	In this paper we consider performances of a version of a constant on-time (COT) DC/DC converter. There is a renewed interest in COT converters since they offer interesting features such as speed and low cost implementation. The duty cycle of these converters is varied by acting on the working frequency and this introduces problems in modeling, in deriving transfer functions and in studying stability properties. Largely adopted averaging methods, that assume that the control loop bandwidth is much smaller than the converter switching frequency, risk to be no longer applicable since COT converters do not satisfy this hypothesis. Also conventional methods and techniques that exploit Floquet theory and variational model can not be applied since differential algebraic equations modeling switching converters show discontinuities in the vector field (switching). In this paper we use saltation matrices to allow the application of consolidated numerical techniques to the specific case of COT converters and, more in general, to the broad class of switching converters modeled by mixed analog/digital models.
Starting Page	1
Ending Page	4
File Size	330882
Page Count	4
File Format	PDF
ISBN	9783000437854
DOI	10.1109/ECCTD.2013.6662270
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-08
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	TU Dresden
Subject Keyword	Computational modeling Capacitors Stability analysis Numerical models Mathematical model Matrix converters Load modeling
Content Type	Text
Resource Type	Article

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