By Topic

Analysis of Lossless Current Sensing Techniques with High Accuracy and Linearity

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Linda Ng ; School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, ; Subkhan Prawira ; L. S. Ng ; Y. Y. H. Lam
more authors

Several lossless current sensing techniques have been proposed in literatures and adopted by the industries in recent years. However, none of these solutions have addressed the issue of uniform sense accuracy. In this paper, an in-depth analysis of the lossless current sensing technique implemented in a dc-dc buck converter is presented. The compensation techniques for achieving a uniform sense-ratio are discussed and analyzed using two different current sense circuit topologies. The sense circuits are designed using the AMS 0.35 um, 4 metals, double poly CMOS process. Using the same technology and operating under the same electrical conditions, the simulation results show that the proposed sense circuits achieved a maximum sense accuracy of 99%, compared to 95% achieved using the conventional approach.

Published in:

Communications, Circuits and Systems, 2007. ICCCAS 2007. International Conference on

Date of Conference:

11-13 July 2007