A multi-channel high precision current matching LED Driver for intelligent dimming

Poki Chen; Hsien Chih Liu; Ya Wen Yang; Ya Ying Li; Fajar Budiman

doi:10.1109/ISPACS.2015.7432760

A multi-channel high precision current matching LED Driver for intelligent dimming

Poki Chen
, Hsien Chih Liu
, Ya Wen Yang
, Ya Ying Li
, Fajar Budiman

National Taiwan University of Science and Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Scopus citations

Abstract

In this paper, a LED Driver with precise current matching is proposed. Through the help of artful layout schemes, the accurately matched LED currents are achieved with high tolerance to process, temperature and voltage (PVT) variations. Even with high voltage MOSFETs, the maximum current mismatch among LED channels is measured to be merely-0.385%∼0.372% which is almost one-order better than those of the conventional ones. The temperature coefficient of this circuit is as low as 20ppm/°C over-40°C ∼125°C range for 20mA LED driving current. This circuit was fabricated in TSMC 0.25μm 1P3M process with a chip size of 1.15∗1.9mm2.

Original language	English
Title of host publication	2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	174-177
Number of pages	4
ISBN (Electronic)	9781467364997
DOIs	https://doi.org/10.1109/ISPACS.2015.7432760
State	Published - 11 Mar 2016
Externally published	Yes
Event	International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015 - Nusa Dua, Bali, Indonesia Duration: 9 Nov 2015 → 12 Nov 2015

Publication series

Name	2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015

Conference

Conference	International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015
Country/Territory	Indonesia
City	Nusa Dua, Bali
Period	9/11/15 → 12/11/15

Access to Document

10.1109/ISPACS.2015.7432760

Cite this

Chen, P., Liu, H. C., Yang, Y. W., Li, Y. Y., & Budiman, F. (2016). A multi-channel high precision current matching LED Driver for intelligent dimming. In 2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015 (pp. 174-177). Article 7432760 (2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISPACS.2015.7432760

Chen, Poki ; Liu, Hsien Chih ; Yang, Ya Wen et al. / A multi-channel high precision current matching LED Driver for intelligent dimming. 2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015. Institute of Electrical and Electronics Engineers Inc., 2016. pp. 174-177 (2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015).

@inproceedings{d08fa77970d44c20a0020e57620bf77f,

title = "A multi-channel high precision current matching LED Driver for intelligent dimming",

abstract = "In this paper, a LED Driver with precise current matching is proposed. Through the help of artful layout schemes, the accurately matched LED currents are achieved with high tolerance to process, temperature and voltage (PVT) variations. Even with high voltage MOSFETs, the maximum current mismatch among LED channels is measured to be merely-0.385\%∼0.372\% which is almost one-order better than those of the conventional ones. The temperature coefficient of this circuit is as low as 20ppm/°C over-40°C ∼125°C range for 20mA LED driving current. This circuit was fabricated in TSMC 0.25μm 1P3M process with a chip size of 1.15∗1.9mm2.",

author = "Poki Chen and Liu, \{Hsien Chih\} and Yang, \{Ya Wen\} and Li, \{Ya Ying\} and Fajar Budiman",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015 ; Conference date: 09-11-2015 Through 12-11-2015",

year = "2016",

month = mar,

day = "11",

doi = "10.1109/ISPACS.2015.7432760",

language = "English",

series = "2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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booktitle = "2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015",

}

Chen, P, Liu, HC, Yang, YW, Li, YY & Budiman, F 2016, A multi-channel high precision current matching LED Driver for intelligent dimming. in 2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015., 7432760, 2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015, Institute of Electrical and Electronics Engineers Inc., pp. 174-177, International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015, Nusa Dua, Bali, Indonesia, 9/11/15. https://doi.org/10.1109/ISPACS.2015.7432760

A multi-channel high precision current matching LED Driver for intelligent dimming. / Chen, Poki; Liu, Hsien Chih; Yang, Ya Wen et al.
2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015. Institute of Electrical and Electronics Engineers Inc., 2016. p. 174-177 7432760 (2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - A multi-channel high precision current matching LED Driver for intelligent dimming

AU - Chen, Poki

AU - Liu, Hsien Chih

AU - Yang, Ya Wen

AU - Li, Ya Ying

AU - Budiman, Fajar

PY - 2016/3/11

Y1 - 2016/3/11

N2 - In this paper, a LED Driver with precise current matching is proposed. Through the help of artful layout schemes, the accurately matched LED currents are achieved with high tolerance to process, temperature and voltage (PVT) variations. Even with high voltage MOSFETs, the maximum current mismatch among LED channels is measured to be merely-0.385%∼0.372% which is almost one-order better than those of the conventional ones. The temperature coefficient of this circuit is as low as 20ppm/°C over-40°C ∼125°C range for 20mA LED driving current. This circuit was fabricated in TSMC 0.25μm 1P3M process with a chip size of 1.15∗1.9mm2.

AB - In this paper, a LED Driver with precise current matching is proposed. Through the help of artful layout schemes, the accurately matched LED currents are achieved with high tolerance to process, temperature and voltage (PVT) variations. Even with high voltage MOSFETs, the maximum current mismatch among LED channels is measured to be merely-0.385%∼0.372% which is almost one-order better than those of the conventional ones. The temperature coefficient of this circuit is as low as 20ppm/°C over-40°C ∼125°C range for 20mA LED driving current. This circuit was fabricated in TSMC 0.25μm 1P3M process with a chip size of 1.15∗1.9mm2.

UR - https://www.scopus.com/pages/publications/84966632818

U2 - 10.1109/ISPACS.2015.7432760

DO - 10.1109/ISPACS.2015.7432760

M3 - Conference contribution

AN - SCOPUS:84966632818

T3 - 2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015

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EP - 177

BT - 2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015

PB - Institute of Electrical and Electronics Engineers Inc.

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Y2 - 9 November 2015 through 12 November 2015

ER -

Chen P, Liu HC, Yang YW, Li YY, Budiman F. A multi-channel high precision current matching LED Driver for intelligent dimming. In 2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015. Institute of Electrical and Electronics Engineers Inc. 2016. p. 174-177. 7432760. (2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015). doi: 10.1109/ISPACS.2015.7432760

A multi-channel high precision current matching LED Driver for intelligent dimming

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