NDLI: Tolerance design of ballast resistance for multi-string LED driver

Content Provider	IEEE Xplore Digital Library
Author	Jun-Young Park Sung-Jin Choi
Copyright Year	2015
Description	Author affiliation: Sch. of Electr. Eng., Univ. of Ulsan, Ulsan, South Korea (Jun-Young Park; Sung-Jin Choi)
Abstract	This paper investigates a novel tolerance design method for a resistive light-emitting-diode (LED) driver with multi-string configuration in mass production. Considering a trade-off among the current uniformity, the current accuracy in LEDs, and the loss dissipation in the driver circuit, a bus voltage and a series resistor are identified as two design parameters regardless of production spreads both in the LED string voltage and in the ballast resistance. By combining discrete optimization technique with Monte-Carlo method, this paper proposes an effective algorithm to design the circuit parameters. Comparison with the conventional design by simulation and hardware tests shows that the suggested scheme provides more reliability and flexibility in practical situation. Moreover, utilizing only datasheet values eliminates the need for I-V curve extraction in the design process.
Starting Page	1
Ending Page	10
File Size	284075
Page Count	10
File Format	PDF
e-ISBN	9789075815221
DOI	10.1109/EPE.2015.7309108
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-08
Publisher Place	Switzerland
Access Restriction	Subscribed
Rights Holder	EPE Association and IEEE
Subject Keyword	Resistors Resistance Electronic ballast Design Electronic ballasts Accuracy Design methodology Diode Lighting Production Light emitting diodes Device simulation
Content Type	Text
Resource Type	Article

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