A discrete-time state-space representation of a Buck
converter is presented. This analytical state-space model provides explicit
insight on how circuit parameters influence the stability and transient
performance for this converter type. Variations in the power rail components
and parasitic resistances are accommodated, which are typically neglected in
compensator synthesis for switched mode power supplies. With this
representation, robust stability and feedback performance can be readily
assessed. Moreover, the model can be employed directly for the design of
digital robust compensators, and it provides a basis for the development of
compensators in analytical form rather than the use of numerical discretisation
techniques.
History
Publication
IFAC Proceedings Volumes;45 (13), pp. 647-652
Publisher
Elsevier
Note
peer-reviewed
Rights
This is the author’s version of a work that was accepted for publication in IFAC Proceedings Volumes. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in IFAC Proceedings Volumes, 2012, 45 (13), pp. 647-652,
https://doi.org/10.3182/20120620-3-DK-2025.00023