NDLI: Novel Self-Configurable Current-Mirror Techniques for Reducing Current Imbalance in Parallel Light-Emitting Diode (LED) Strings

Content Provider	IEEE Xplore Digital Library
Author	Si Nan Li Zhong, W.W.X. Wu Chen Hui, S.S.Y.
Copyright Year	1986
Abstract	Traditional current-mirror methods require one fixed current reference for controlling other current source or sources. In this paper, a new self-configurable current-mirror method that can dynamically determine the best current branch as the current reference in order to ensure good balance of all parallel current sources is proposed. The operating principle involves a dynamic and self-configurable transistor-based current-balancing circuit that can be operated in saturation or linear mode. In either operating mode, good current balance or sharing among all parallel-connected current sources can be guaranteed. The novel current-balancing circuit does not require a separate power supply for powering their control circuits. The proposal is a modular one that can be expanded to any number of parallel current sources. Its principle has been successfully applied to current balancing of parallel LED strings.
Sponsorship	IEEE Power Electronics Society
Starting Page	2153
Ending Page	2162
Page Count	10
File Size	1348614
File Format	PDF
ISSN	08858993
Volume Number	27
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Light emitting diodes Mirrors Power supplies Educational institutions Temperature Proposals Temperature sensors LED Current balance current mirrors
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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