An Efficient Driver for Dimmable LED Lighting

An efficient driver circuit is proposed for light-emitting-diode (LED) lamps with a dimming feature. The driver consists of a flyback converter in series with the dc-link. By processing partial power of the driver circuit for current regulation, the loss produced by power conversion can be diminishe...

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Published in:IEEE transactions on power electronics 2012-11, Vol.27 (11), p.4613-4618
Main Authors: Moo, Chin-Sien, Chen, Yu-Jen, Yang, Wen-Ching
Format: Article
Language:English
Subjects:
Amplitude modulation (AM)
Capacitors
Circuits
Control
Conversion
Dimming
double pulse-width modulation (DPWM)
Driver circuits
Drivers
Electric currents
Electric power
flyback converter
Inductors
Lamps
LED lamps
Light emitting diodes
light-emitting-diode (LED)
Modulation
Switches
Voltage control
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cited_by cdi_FETCH-LOGICAL-c326t-1ff6bc25405861d44fba964cc8ab58cd381a77957a008c192c763c289cecca023
cites cdi_FETCH-LOGICAL-c326t-1ff6bc25405861d44fba964cc8ab58cd381a77957a008c192c763c289cecca023
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container_issue 11
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container_title IEEE transactions on power electronics
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creator Moo, Chin-Sien
Chen, Yu-Jen
Yang, Wen-Ching
description An efficient driver circuit is proposed for light-emitting-diode (LED) lamps with a dimming feature. The driver consists of a flyback converter in series with the dc-link. By processing partial power of the driver circuit for current regulation, the loss produced by power conversion can be diminished. The dimming feature is accomplished by means of current amplitude modulation (AM) or double pulse-width modulation (DPWM). The detailed circuit operation stages and analysis are provided. A laboratory circuit is designed for a 45 W LED lamp. Experimental results demonstrate that a high efficiency can be achieved, even at dimmed lamp power.
doi_str_mv 10.1109/TPEL.2012.2183892
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1941-0107
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source IEEE Xplore (Online service)
subjects Amplitude modulation (AM)
Capacitors
Circuits
Control
Conversion
Dimming
double pulse-width modulation (DPWM)
Driver circuits
Drivers
Electric currents
Electric power
flyback converter
Inductors
Lamps
LED lamps
Light emitting diodes
light-emitting-diode (LED)
Modulation
Switches
Voltage control
title An Efficient Driver for Dimmable LED Lighting
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