Title: Dynamic duty-cycle limitation of the boost DC/DC converter allowing maximal output power operations
Authors: Michal, Vratislav
Citation: 2016 International Conference on Applied Electronics: Pilsen, 6th – 7th September 2016, Czech Republic, p.177-182.
Issue Date: 2016
Publisher: Západočeská univerzita v Plzni
Document type: konferenční příspěvek
URI: http://hdl.handle.net/11025/35244
ISBN: 978–80–261–0601–2 (Print)
978–80–261–0602–9 (Online)
ISSN: 1803–7232 (Print)
1805–9597 (Online)
Keywords: spínače;induktory;odpor;měření napětí;senzory;řízení napětí;zpětná vazba
Keywords in different language: switches;inductors;resistance;voltage measurement;sensors;voltage control;feedback loop
Abstract in different language: This paper describes the concept of the dynamic duty-cycle limiter of the boost dc-dc converter. Duty-cycle limitation in boost converters is usually used to protect the bottom switch against an excessive current, and also to avoid instability occurring at high duty-cycle operations. Compared to fixed limitation, dynamic limiter enables to detect and maintain maximal possible output voltage V MAX , when desired output voltage cannot be provided e.g. due to excessive load current or increased resistance of the switches. This feature allows to extend the operation range of the converter and powered device. Developed method applies to low power converters, and it is based on the power balance condition detection circuit. This detection is realized via simple and low consumption voltage sensing. Paper presents description of the method, circuit implementation and shows simulated results obtained with integrated 0.13μm CMOS boost dc-dc converter.
Rights: © Západočeská univerzita v Plzni
Appears in Collections:Applied Electronics 2016
Applied Electronics 2016

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