A new current-mode control for DC/DC converter

Author

Maria, G. ; Livreri, P. ; Capponi, G. ; Marino, F.

fYear

2005

fDate

Sept. 2005

Firstpage

335

Lastpage

340

Abstract

Current-sensing is used widely in smart power chips, especially in DC/DC converter for voltage regulator modules (VRM), implemented with interleaved synchronous rectifier buck converters. The interleaved technique main difficulty is due to its current-sharing control between the several modules. Besides, if the used control technique is current-mode type, it is necessary create a ramp signal proportional to current on the inductor. In this paper, a lossless current-sensing method, solving the major disadvantages of the current-mode control and implementing a current-sharing technique, is proposed. This innovative technique is tested in a two-module interleaved buck converter

Keywords

DC-DC power convertors; power inductors; rectifying circuits; voltage regulators; DC-DC converter; current-mode control; current-sensing method; current-sharing control; inductors; interleaved synchronous rectifier buck converters; smart power chips; two-module interleaved buck converter; voltage regulator modules; Buck converters; Circuits; DC-DC power converters; Error correction; Filters; Microprocessors; Monitoring; Pulse width modulation; Telecommunications; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Conference, 2005. INTELEC '05. Twenty-Seventh International

Conference_Location

Berlin

Print_ISBN

978-3-8007-2905-0

Type

conf

DOI

10.1109/INTLEC.2005.335115

Filename

4134354