Memorias de investigación
Artículos en revistas:
Minimum Time Control for Multiphase Buck Converter: Analysis and Application
Año:2014
Áreas de investigación
  • Ingenierías,
  • Ingeniería eléctrica, electrónica y automática
Datos
Descripción
The combination of minimum time control and multiphase converter is a favorable option for dc-dc converters in applications where output voltage variation is required, such as RF amplifiers and dynamic voltage scaling in microprocessors, due to their advantage of fast dynamic response. In this paper, an improved minimum time control approach for multiphase buck converter that is based on charge balance technique, aiming at fast output voltage transition is presented. Compared with the traditional method, the proposed control takes into account the phase delay and current ripple in each phase. Therefore, by investigating the behavior of multiphase converter during voltage transition, it resolves the problem of current unbalance after the transient, which can lead to long settling time of the output voltage. The restriction of this control is that the output voltage that the converter can provide is related to the number of the phases, because only the duty cycles at which the multiphase converter has total ripple cancellation are used in this approach. The model of the proposed control is introduced, and the design constraints of the buck converter's filter for this control are discussed. In order to prove the concept, a four-phase buck converter is implemented and the experimental results that validate the proposed control method are presented. The application of this control to RF envelope tracking is also presented in this paper.
Internacional
Si
JCR del ISI
Si
Título de la revista
Ieee Transactions on Power Electronics
ISSN
0885-8993
Factor de impacto JCR
4,08
Información de impacto
Volumen
29
DOI
10.1109/TPEL.2013.2256798
Número de revista
13736091
Desde la página
958
Hasta la página
967
Mes
ABRIL
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Electrónica Industrial
  • Departamento: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
  • Centro o Instituto I+D+i: Centro de Electrónica Industrial. CEI