2026-09-19T02:38:57Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1006722026-06-06T00:49:03Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Brett A. Miwa and Anantha P. Chandrakasan.
Tchapmi Petse, Lyne
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2016-01-04T20:52:08Z
2016-01-04T20:52:08Z
2014
2014
http://hdl.handle.net/1721.1/100672
932128009
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).
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.
by Lyne Petse Tchapmi.
M.Eng.
63 pages
eng
Massachusetts Institute of Technology
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.
http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
Wide-bandwidth digital controller for multi-phase converters
Thesis
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<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.</Abstract>
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