کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
547954 | 872070 | 2008 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Current-sensing technique for current-mode controlled voltage regulator modules Current-sensing technique for current-mode controlled voltage regulator modules](/preview/png/547954.png)
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.
Journal: Microelectronics Journal - Volume 39, Issue 12, December 2008, Pages 1852–1859