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A comparison and an improvement of two continuous-time models for current-mode control

Johansson, B (2002) 24th Annual International Telecommunications Energy Conference, 2002 In 24th Annual International Telecommunications Energy Conference, 2002 p.552-559
Abstract
Current-mode control can be used to control switched DC-DC power converters. This paper compares two continuous-time models for current-mode control that are made to be accurate up to half the switching frequency. The two models are the ones presented by Ridley and Tan. The closed loop frequency responses predicted by these two models are compared with results obtained from simulations of a buck converter in continuous conduction mode. The control-to-output transfer functions and the output impedances predicted by the two models agree very well with the simulation results. This is however not the case for the audio susceptibility. A new expression for the audio susceptibility is presented in this paper and is used to improve the two models.
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author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
24th Annual International Telecommunications Energy Conference, 2002
pages
552 - 559
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
24th Annual International Telecommunications Energy Conference, 2002
external identifiers
  • Scopus:0036912047
ISBN
0-7803-7512-2
DOI
10.1109/INTLEC.2002.1048711
language
English
LU publication?
no
id
6c28be50-7171-415f-9134-ba3b142d7d28 (old id 698343)
date added to LUP
2007-12-05 14:23:16
date last changed
2017-01-01 07:59:36
@inproceedings{6c28be50-7171-415f-9134-ba3b142d7d28,
  abstract     = {Current-mode control can be used to control switched DC-DC power converters. This paper compares two continuous-time models for current-mode control that are made to be accurate up to half the switching frequency. The two models are the ones presented by Ridley and Tan. The closed loop frequency responses predicted by these two models are compared with results obtained from simulations of a buck converter in continuous conduction mode. The control-to-output transfer functions and the output impedances predicted by the two models agree very well with the simulation results. This is however not the case for the audio susceptibility. A new expression for the audio susceptibility is presented in this paper and is used to improve the two models.},
  author       = {Johansson, B},
  booktitle    = {24th Annual International Telecommunications Energy Conference, 2002},
  isbn         = {0-7803-7512-2},
  language     = {eng},
  pages        = {552--559},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {A comparison and an improvement of two continuous-time models for current-mode control},
  url          = {http://dx.doi.org/10.1109/INTLEC.2002.1048711},
  year         = {2002},
}