Please use this identifier to cite or link to this item: https://doi.org/10.1109/TPEL.2007.915771
Title: Giant magneto resistive (GMR) effect based current sensing technique for low voltage/high current voltage regulator modules
Authors: Singh, R.P.
Khambadkone, A.M. 
Keywords: Current mode control
Current sensing
Current sharing
Giant magneto resistive (GMR) effect
Voltage regulator module (VRM)
Issue Date: Mar-2008
Citation: Singh, R.P., Khambadkone, A.M. (2008-03). Giant magneto resistive (GMR) effect based current sensing technique for low voltage/high current voltage regulator modules. IEEE Transactions on Power Electronics 23 (2) : 915-925. ScholarBank@NUS Repository. https://doi.org/10.1109/TPEL.2007.915771
Abstract: Current sensing is one of the important functions in a dc-dc converter. It may be used for implementing current mode control or for achieving current sharing in a paralleled converters. Many current sensing schemes have been reported in literature, but they are either lossy or they require precise knowledge of the component value. In this paper, a giant magneto resistive effect based sensor is used for low voltage, high current voltage regulator module type applications. Since the current sensing is based on magnetic field, the sensing accuracy depends upon the placement of sensor on the conductor. Optimum distance is obtained for sensing the current with desired accuracy. It also gives the optimum location of the sensor to minimize the interference from closely lying current carrying conductors. Finally the performance of the sensor is experimentally verified on a 1 V/15 A buck converter switching at 1 MHz. © 2008 IEEE.
Source Title: IEEE Transactions on Power Electronics
URI: http://scholarbank.nus.edu.sg/handle/10635/56140
ISSN: 08858993
DOI: 10.1109/TPEL.2007.915771
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