Multiphase Buck Converter with Minimum Time Control Strategy for RF Envelope Modulation

Cheng, Pengming and Vasic, Miroslav and García Suárez, Oscar and Oliver Ramírez, Jesús Angel and Alou Cervera, Pedro and Cobos Márquez, José Antonio (2011). Multiphase Buck Converter with Minimum Time Control Strategy for RF Envelope Modulation. In: "2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)", 06/03/2011 - 10/03/2011, Fort Worth, Texas, USA. ISBN 978-1-4244-8084-5. pp. 904-909. https://doi.org/10.1109/APEC.2011.5744702.

Description

Title: Multiphase Buck Converter with Minimum Time Control Strategy for RF Envelope Modulation
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: 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
Event Dates: 06/03/2011 - 10/03/2011
Event Location: Fort Worth, Texas, USA
Title of Book: Proceedings of 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
Date: 2011
ISBN: 978-1-4244-8084-5
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

Power amplifier supplied with constant supply voltage has very low efficiency in the transmitter. A DC-DC converter in series with a linear regulator can be used to obtain voltage modulation. Since this converter should be able to change the output voltage very fast, a multiphase buck converter with a minimum time control strategy is proposed. To modulate supply voltage of the envelope amplifier, the multiphase converter works with some particular duty cycle (i/n, i=1, 2 ... n, n is the number of phase) to generate discrete output voltages, and in these duty cycles the output current ripple can be completely cancelled. The transition times for the minimum time are pre-calculated and inserted in a look-up table. The theoretical background, the system model that is necessary in order to calculate the transition times and the experimental results obtained with a 4-phase buck prototype are given

More information

Item ID: 13346
DC Identifier: http://oa.upm.es/13346/
OAI Identifier: oai:oa.upm.es:13346
DOI: 10.1109/APEC.2011.5744702
Official URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5744702
Deposited by: Memoria Investigacion
Deposited on: 24 Oct 2012 11:27
Last Modified: 21 Apr 2016 12:39
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