Spread spectrum modulation system for burst mode DC-DC converters

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Spread spectrum modulation system for burst mode DC-DC converters

Author: Zhang, Ji, M. Eng. Massachusetts Institute of Technology

Citable URI: http://hdl.handle.net/1721.1/36906

Other Contributors: Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.

Advisor: David A. Walch and David J. Perreault.

Department: Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.

Publisher: Massachusetts Institute of Technology

Date Issued: 2006

Abstract:

This thesis develops a spread spectrum switching system for DC-DC converters operating in burst mode. Burst mode DC-DC converters have high efficiency under low-power conditions in applications such as cell phones and notebook computers, but often produce noise in the audible range. This thesis explores a frequency modulation scheme and transient control that attenuates audible noise harmonics while minimizing the tradeoff for converter regulation, efficiency, and output voltage ripple.

Description:

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Includes bibliographical references (leaves 91-92).

URI: http://hdl.handle.net/1721.1/36906

Keywords: Electrical Engineering and Computer Science.

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