Design of envelope amplifier based on interleaved multiphase buck converter with minimum time control for RF application

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 of envelope amplifier based on interleaved multiphase buck converter with minimum time control for RF application. In: "2011 IEEE Energy Conversion Congress and Exposition (ECCE)", 17/09/2011 - 22/09/2011, Phoenix, Arizona, EEUU. ISBN 978-1-4577-0542-7. pp. 1-8.

Description

Title: Design of envelope amplifier based on interleaved multiphase buck converter with minimum time control for RF application
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 IEEE Energy Conversion Congress and Exposition (ECCE)
Event Dates: 17/09/2011 - 22/09/2011
Event Location: Phoenix, Arizona, EEUU
Title of Book: Proceedings of 2011 IEEE Energy Conversion Congress and Exposition (ECCE)
Date: 2011
ISBN: 978-1-4577-0542-7
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

In this paper, an interleaved multiphase buck converter with minimum time control strategy for envelope amplifiers in high efficiency RF power amplifiers is proposed. The solution for the envelope amplifier is to combine the proposed converter with a linear regulator in series. High efficiency of envelope amplifier can be obtained through modulating the supply voltage of the linear regulator. Instead of tracking the envelope, the buck converter has discrete output voltage that corresponding to particular duty cycles which 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 lookup 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: 13319
DC Identifier: http://oa.upm.es/13319/
OAI Identifier: oai:oa.upm.es:13319
Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6063924
Deposited by: Memoria Investigacion
Deposited on: 25 Oct 2012 07:51
Last Modified: 21 Apr 2016 12:37
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