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Conference Paper: Adaptive prediction in digitally controlled buck converter with fast load transient response

TitleAdaptive prediction in digitally controlled buck converter with fast load transient response
Authors
KeywordsAdaptive FIR filter
Adaptive prediction
Buck converter
Digital controller
IIR filter
Issue Date2012
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000158
Citation
The 2012 IEEE 13th Workshop on Control and Modeling for Power Electronics (COMPEL 2012), Kyoto, Japan, 10-13 July 2012. In Conference Proceedings, 2012, p. 1-7 How to Cite?
AbstractAn adaptive prediction scheme based on linear extrapolation for digitally controlled voltage-mode buck-type switching converter is presented. A major drawback of conventional digitally controlled switching converters is bandwidth limitation due to the additional phase lag in the digital feedback control loop. By predicting the future error voltage, the ADC sampling time delay is compensated in order to achieve a higher bandwidth even with a modest sampling rate. Both simulation and measurement results show that the output voltage settling time of the digitally controlled buck converter is reduced by as much as 28% with the proposed adaptive prediction. The fastest settling time in response to a 600mA load transient is around 15μs, approaching the transient response of the state-of-the-art analog-based controller.
Persistent Identifierhttp://hdl.handle.net/10722/211041
ISBN

 

DC FieldValueLanguage
dc.contributor.authorLee, TLA-
dc.contributor.authorChan, PCH-
dc.date.accessioned2015-07-03T07:38:05Z-
dc.date.available2015-07-03T07:38:05Z-
dc.date.issued2012-
dc.identifier.citationThe 2012 IEEE 13th Workshop on Control and Modeling for Power Electronics (COMPEL 2012), Kyoto, Japan, 10-13 July 2012. In Conference Proceedings, 2012, p. 1-7-
dc.identifier.isbn978-1-4244-9373-9-
dc.identifier.urihttp://hdl.handle.net/10722/211041-
dc.description.abstractAn adaptive prediction scheme based on linear extrapolation for digitally controlled voltage-mode buck-type switching converter is presented. A major drawback of conventional digitally controlled switching converters is bandwidth limitation due to the additional phase lag in the digital feedback control loop. By predicting the future error voltage, the ADC sampling time delay is compensated in order to achieve a higher bandwidth even with a modest sampling rate. Both simulation and measurement results show that the output voltage settling time of the digitally controlled buck converter is reduced by as much as 28% with the proposed adaptive prediction. The fastest settling time in response to a 600mA load transient is around 15μs, approaching the transient response of the state-of-the-art analog-based controller.-
dc.languageeng-
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000158-
dc.relation.ispartofIEEE Workshop on Computers in Power Electronics (COMPEL 2012)-
dc.rightsIEEE Workshop on Computers in Power Electronics. Copyright © IEEE.-
dc.rights©2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectAdaptive FIR filter-
dc.subjectAdaptive prediction-
dc.subjectBuck converter-
dc.subjectDigital controller-
dc.subjectIIR filter-
dc.titleAdaptive prediction in digitally controlled buck converter with fast load transient response-
dc.typeConference_Paper-
dc.identifier.emailLee, TLA: tlalee@hku.hk-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/COMPEL.2012.6251747-
dc.identifier.scopuseid_2-s2.0-84866725908-
dc.identifier.hkuros244388-
dc.identifier.hkuros245253-
dc.identifier.hkuros245507-
dc.identifier.spage1-
dc.identifier.epage7-
dc.publisher.placeUnited States-
dc.customcontrol.immutablesml 150703-

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