2026-09-20T08:04:11Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/611702022-01-13T07:54:29Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
David Perreault.
Li, Zhipeng, Ph. D. Massachusetts Institute of Technology
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2011-02-23T14:23:46Z
2011-02-23T14:23:46Z
2010
2010
http://hdl.handle.net/1721.1/61170
699510789
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 75-77).
A constant-frequency peak current mode synchronous step-down DC-DC controller integrated circuit has been designed with adaptive dead-time control. The adaptive dead-time control circuitry is implemented as digital delay-locked loop with digital counters as memory elements. In periodic steady state, the switch is controlled to turn on exactly when the body diode starts to conduct current. The conduction loss through MOSFET switch body diode is minimized. In spice simulation, this scheme increases the overall efficiency in low-voltage applications by up to 3%.
by Zhipeng Li.
M.Eng.
77 p.
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.
Design of a step-down DC-DC controller integrated circuit with adaptive dead-time control
Design of a step-down direct current to direct current controller integrated circuit with adaptive dead-time control
Thesis
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<Abstract>A constant-frequency peak current mode synchronous step-down DC-DC controller integrated circuit has been designed with adaptive dead-time control. The adaptive dead-time control circuitry is implemented as digital delay-locked loop with digital counters as memory elements. In periodic steady state, the switch is controlled to turn on exactly when the body diode starts to conduct current. The conduction loss through MOSFET switch body diode is minimized. In spice simulation, this scheme increases the overall efficiency in low-voltage applications by up to 3%.</Abstract>
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