2026-09-20T09:42:46Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/412512022-01-13T07:54:29Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
John Tilly.
Ashiabor, Awo Dede O
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2008-04-23T14:35:45Z
2008-04-23T14:35:45Z
2007
2007
http://hdl.handle.net/1721.1/41251
213386337
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.
Includes bibliographical references (leaves 76-77).
A small sized and efficient method to power RGB LEDs for use as backlights in flat panel displays is explored in this thesis. The proposed method is to drive a parallel switched connection of LEDs with a single Average Mode Controlled buck regulator.Specifications for the switching regulator and control circuitry are described. The application circuit demonstrates current settling times between 7[mu]s and 30[mu]s at a switching frequency of 290kHz. Current settling is improved at higher switching frequencies, with settling times approaching a 2[mu]s to 4[mu]s range at 1MHz switching.
by Awo Dede O. Ashiabor.
M.Eng.
86 leaves
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
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http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
A design for an RGB LED driver with independent PWM control and fast settling time
Thesis
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