Improvement of the Dynamic Performance of a Multiphase Current Controlled Buck Converter using an Auxiliary Synchronous Buck Converter as an Additional Energy Path

Svikovic, Vladimir and Alou Cervera, Pedro and Oliver Ramírez, Jesús Angel and García Suárez, Oscar and Cobos Márquez, José Antonio (2013). Improvement of the Dynamic Performance of a Multiphase Current Controlled Buck Converter using an Auxiliary Synchronous Buck Converter as an Additional Energy Path. In: "XX Seminario Anual de Automática, Electrónica Industrial e Instrumentación SAAEI 2013", 10/07/2013 - 12/07/2013, Madrid (Spain). ISBN 978-84-15302-60-5. pp..

Description

Title: Improvement of the Dynamic Performance of a Multiphase Current Controlled Buck Converter using an Auxiliary Synchronous Buck Converter as an Additional Energy Path
Author/s:
  • Svikovic, Vladimir
  • Alou Cervera, Pedro
  • Oliver Ramírez, Jesús Angel
  • García Suárez, Oscar
  • Cobos Márquez, José Antonio
Item Type: Presentation at Congress or Conference (Article)
Event Title: XX Seminario Anual de Automática, Electrónica Industrial e Instrumentación SAAEI 2013
Event Dates: 10/07/2013 - 12/07/2013
Event Location: Madrid (Spain)
Title of Book: XX Seminario Anual de Automática, Electrónica Industrial e Instrumentación SAAEI 2013
Date: 2013
ISBN: 978-84-15302-60-5
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

This work is related to the output impedance improvement of a Multiphase Buck converter with Peak Current Mode Control (PCMC) by means of introducing an additional power path that virtually increases the output capacitance during transients. Various solutions that can be employed to improve the dynamic behavior of the converter system exist, but nearly all solutions are developed for a Single Phase Buck converter with Voltage Mode Control (VMC), while in the VRM applications, due to the high currents, the system is usually implemented as a Multiphase Buck Converter with Current Mode Control. The additional energy path, as presented here, is introduced with the Output Impedance Correction Circuit (OICC) based on the Controlled Current Source (CCS). The OICC is used to inject or extract a current n-1 times larger than the output capacitor current, thus virtually increasing n times the value of the output capacitance during the transients. Furthermore, this work extends the OICC concept to a Multiphase Buck Converter system while comparing proposed solution with the system that has n times bigger output capacitor. In addition, the OICC is implemented as a Synchronous Buck Converter with PCMC, thus reducing its influence on the system efficiency.

More information

Item ID: 29692
DC Identifier: http://oa.upm.es/29692/
OAI Identifier: oai:oa.upm.es:29692
Deposited by: Memoria Investigacion
Deposited on: 11 May 2015 15:23
Last Modified: 11 May 2015 15:23
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