Analysis of current-bidirectional buck-boost based switch-mode audio amplifier

Gert Bolten Maizonave, Michael A. E. Andersen, Claus Kjærgaard, Kristian L. Lund, Lars B. R. Hansen

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Abstract

The following studdy was carried out in order to assses quantitatively the performannce of the buck--boost converter whhen used as swiitch-mode audio amplifier. It comprises of, to beggin with, the de limitation of design criteria bassed on the state of-the-art solution, which is based in a differential mode buckbased amplifier with a boost converter as power supply. The averaged switch modelling of the differential mode current bidirectional topology is also used, in order to analyze the steady state and frequency-wise behaviour of this converter and parameterize it to meet the design criteria. Next, several piecewise-linear siimulation resultss are shown with detail enough to emphasize the features of the converter. A simple prototype is implemented to verify the main predicted features. Presently no previous publicat ion could be found containing a thorough analysis of this topology in such configuration when applied for audio.
Original languageEnglish
Title of host publicationICREPQ'11 International Conference on Renewable Energies and Power Quality
Publication date2011
ISBN (Print)978-84-614-7527-8
Publication statusPublished - 2011
EventInternational Conference on Renewable Energies and Power Quality (ICREPQ'11) - Canary Islands Convention Centre, Las Palmas de Canaria, Spain
Duration: 13 Apr 201115 Apr 2011

Conference

ConferenceInternational Conference on Renewable Energies and Power Quality (ICREPQ'11)
LocationCanary Islands Convention Centre
CountrySpain
CityLas Palmas de Canaria
Period13/04/201115/04/2011

Keywords

  • Amplifier
  • Losses
  • Booost
  • Audio
  • Modelling

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