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Accelerating design of digital buck DC-DC converters with nonlinear sampled-data models

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2 Author(s)
Cliquennois, S. ; ST Microelectron., Grenoble ; Ragonesi, G.

This paper describes two new non-linear sampled-data models for buck DC-DC converters, derived from classical sampled-data representation, and including loop delay for the second one. Load transient behaviors of a recently proposed small-signal discrete model as well as the proposed models are compared with a large-signal, piecewise linear, switched model. A design methodology to optimize transient response of DC/DC digital controller using both linear, non-linear and piecewise linear models is then discussed.

Published in:

Control and Modeling for Power Electronics, 2008. COMPEL 2008. 11th Workshop on

Date of Conference:

17-20 Aug. 2008