Design methodology in multiphase buck converter based on minimum time control for high efficiency RF amplifiers

Cheng, Pengming and Vasic, Miroslav and García Suárez, Oscar and Oliver Ramírez, Jesús Angel and Alou Cervera, Pedro and Cobos Márquez, José Antonio (2011). Design methodology in multiphase buck converter based on minimum time control for high efficiency RF amplifiers. In: "SAAEI 2011, Actas del XVIII Seminario Anual de Automática, Electrónica Industrial e Instrumentación", 05/07/2011 - 08/07/2011, Badajoz, España. ISBN 978-84-933682-3-4. pp. 1-8.

Description

Title: Design methodology in multiphase buck converter based on minimum time control for high efficiency RF amplifiers
Author/s:
  • Cheng, Pengming
  • Vasic, Miroslav
  • García Suárez, Oscar
  • Oliver Ramírez, Jesús Angel
  • Alou Cervera, Pedro
  • Cobos Márquez, José Antonio
Item Type: Presentation at Congress or Conference (Article)
Event Title: SAAEI 2011, Actas del XVIII Seminario Anual de Automática, Electrónica Industrial e Instrumentación
Event Dates: 05/07/2011 - 08/07/2011
Event Location: Badajoz, España
Title of Book: SAAEI 2011, Actas del XVIII Seminario Anual de Automática, Electrónica Industrial e Instrumentación
Date: 2011
ISBN: 978-84-933682-3-4
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Automática, Ingeniería Electrónica e Informática Industrial [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper proposes an interleaved multiphase buck converter with minimum time control strategy for envelope amplifiers in high efficiency RF power amplifiers. The solution of the envelope amplifier is to combine the proposed converter with a linear regulator in series. High system efficiency can be obtained through modulating the supply voltage of the envelope amplifier with the fast output voltage variation of the converter working with several particular duty cycles that achieve total ripple cancellation. The transient model for minimum time control is explained, and the calculation of transient times that are pre-calculated and inserted into a look-up table is presented. The filter design trade-off that limits capability of envelope modulation is also discussed. The experimental results verify the fast voltage transient obtained with a 4-phase buck prototype.

More information

Item ID: 13316
DC Identifier: http://oa.upm.es/13316/
OAI Identifier: oai:oa.upm.es:13316
Official URL: http://www.saaei.org/
Deposited by: Memoria Investigacion
Deposited on: 29 Oct 2012 09:26
Last Modified: 21 Apr 2016 12:37
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