Cart (Loading....) | Create Account
Close category search window
 

Digitally controlled multi-phase buck-converter with merged capacitive attenuator

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
$31 $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

3 Author(s)
Mahdavikhah, B. ; ECE Dept., Univ. of Toronto, Toronto, ON, Canada ; Jain, P. ; Prodic, A.

This paper introduces a new topology that combines a capacitive divider and an interleaved buck to reduce the volume of multi-phase step-down converters. The size reduction is obtained with a low penalty in conduction losses, input filter size, and controller complexity. At heavy loads, the converter efficiency is comparable to that of a conventional buck and at light to medium loads it is improved. The volume reduction is obtained by utilizing the inductors of the buck stage to regulate the tap voltages of the capacitive divider. This eliminates a bulky energy transfer capacitor existing in other switch capacitor (SC) circuits, reduces the number of switches in the conduction path, and simplifies control of the converter. Experimental results obtained with a 7V-to-1V, 10A, 1 MHz prototype demonstrate that the merged capacitor converter has 15% smaller inductor, 13% reduction in output capacitor value and up to 35% reduction in power losses, and 15% faster transient response than a time-optimal controlled buck.

Published in:

Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE

Date of Conference:

5-9 Feb. 2012

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.