Current-Sensing Technique for Current-Mode Controlled Voltage Regulator Modules

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23 Citazioni (Scopus)

Abstract

This paper introduces an innovative current-sense technique for voltage regulator modules (VRMs). The proposed method is applied to a multiphase buck converter although the converter topology does not affect the accuracy or effectiveness of the proposed technique. A RC network is parallel connected with the buck converter low-side MOSFET and the voltage signal across the sense capacitor reconstructs the inductor current waveform. The RC technique benefits from all the advantages of the most popular current-sensing technique, the inductor DC resistance current-sense method, cutting off its main disadvantage. The sense network design is oriented to obtain high immunity to noise and a great dynamic in current-mode control by properly selecting the sense signal slop during Ton and Toff time slots. A laboratory prototype of a multiphase buck converter with current-mode control implementing the proposed current-sense method is described and experimental results are shown. © 2008 Elsevier Ltd. All rights reserved.
Lingua originaleEnglish
pagine (da-a)1852-1859
Numero di pagine8
RivistaMicroelectronics Journal
Volume39 (2008)
Stato di pubblicazionePublished - 2008

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.3100.3107???
  • ???subjectarea.asjc.3100.3104???
  • ???subjectarea.asjc.2500.2508???
  • ???subjectarea.asjc.2200.2208???

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