Current Self-balance Mechanism in Multiphase Buck Converter

García Suárez, Oscar; Zumel Vaquero, Pablo; Castro Martín, Ángel de; Alou Cervera, Pedro y Cobos Márquez, José Antonio (2008). Current Self-balance Mechanism in Multiphase Buck Converter. En: "39th IEEE Power Electronics Specialists Conference (PESC)", 15/06/2008-19/06/2008, Rodas (Grecia). ISBN 978-1-4244-1668-4. pp. 624-628.


Título: Current Self-balance Mechanism in Multiphase Buck Converter
  • García Suárez, Oscar
  • Zumel Vaquero, Pablo
  • Castro Martín, Ángel de
  • Alou Cervera, Pedro
  • Cobos Márquez, José Antonio
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 39th IEEE Power Electronics Specialists Conference (PESC)
Fechas del Evento: 15/06/2008-19/06/2008
Lugar del Evento: Rodas (Grecia)
Título del Libro: Proceedings of IEEE Power Electronics Specialists Conference, 2008 : PESC 2008
Fecha: 2008
ISBN: 978-1-4244-1668-4
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Automática, Ingeniería Electrónica e Informática Industrial [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Some of the recent applications in the field of the power supplies use multiphase converters to achieve fast dynamic response, smaller input/output filters or better packaging. Typically, these converters have several paralleled power stages with a current loop in each phase and an unique voltage loop. The presence of the current loops is necessary to increase dynamic response (by using current mode control) and to avoid current unbalance among phases. The purpose of this paper is to demonstrate that in CCM, with a proper design, there is an intrinsic mechanism of self-balance that helps a lot in avoiding the current unbalance. Thus, in the buck converter, if natural ZVS is achieved in both transitions, the instantaneous inductor current compensates partially the different dc current through the phases. The need for using n current-loops will be finally determined by the application but not by the converter itself. Using the buck converter as a base, a multiphase converter has been developed. Several tests have been carried out in the lab and the results show clearly that, when the conditions are met, the phase currents are very good balanced even during transient conditions.

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Depositado por: Memoria Investigacion
Depositado el: 17 Jun 2010 09:36
Ultima Modificación: 20 Abr 2016 12:54
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