The fast response double buck DC-DC converter (FRDB): operation and output filter influence

Author

Barrado, Andrés ; Lázaro, Antonio ; Vázquez, Ramón ; Salas, Vicente ; Olías, Emilio

Author_Institution

Dept. de Tecnologia Electron., Univ. Carlos de Madrid, Spain

Volume

20

Issue

6

fYear

2005

Firstpage

1261

Lastpage

1270

Abstract

The fast response double buck (FRDB) dc-dc converter was presented like a low output voltage dc-dc converter with fast transient response, in order to feed devices such as microprocessors and digital signal processors (DSPs). The topology of the FRDB is composed of two buck converters connected in parallel, each one of them with different features and aims, and controlled by means of the novel linear-non-linear (LnL) control. In this paper, the topology, the control strategy and the operation principle are shown. Finally, experimental results in different prototypes are presented to show both, the transient response and the recovery time when these prototypes are subjected to load current steps, and the influence of the output filter on these parameters.

Keywords

DC-DC power convertors; digital signal processing chips; power filters; transient response; voltage control; DSP; digital signal processor; fast response double buck DC-DC converter; filter; linear-non-linear control; load current; microprocessor; recovery time; transient response; voltage regulator module; DC-DC power converters; Digital signal processing; Digital signal processors; Feeds; Filters; Low voltage; Microprocessors; Prototypes; Topology; Transient response; Digital signal processors (DSPs); fast response double buck (FRDB) dc–dc converter; linear-non-linear (LnL) control; voltage regulator module (VRM);

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2005.854017

Filename

1528598