Wide-bandwidth digital controller for multi-phase converters
Name
932128009-MIT.pdf
Description
Full printable version
Size
10.62 MB
Format
Adobe PDF
Checksum (MD5)
1ddec89fa4b95b6a05e37ad23b47f38b
Author(s)
Tchapmi Petse, Lyne
Advisor(s)
Brett A. Miwa and Anantha P. Chandrakasan.
Date Issued
2014
Publisher
Massachusetts Institute of Technology
Abstract
DC-DC converters with high bandwidth are essential for today's high efficiency and high-speed micro-processing applications. In order to satisfy the requirements of those systems, we propose the implementation of a practical wide bandwidth digital controller for multiphase buck converters. Traditional implementations of multiphase converters have a performance comparable to single-phase implementations, with a bandwidth limited to a fraction of the per-phase switching frequency Fsw. The goal of this project is to take advantage of multiphase to achieve a higher bandwidth for any given switching frequency. Specifically, we target a bandwidth that scales with N x Fsw, rather than Fsw, with N being the number of phases in the system. This work focuses on the evaluation of a previously proposed digital modulator that is able to react to duty cycle changes at a speed equal to N x Fsw. Using this modulator, we design a few digital controllers and compare their performance to that of traditional digital controllers.
Description
Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 63).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.
Persistent DSpace Link
