Basic circuit theoretic considerations of LED driving: Voltage-source versus current-source driving

Zheng Dong; Chi Kong Tse; S. Y.Ron Hui

doi:10.1109/SPEC.2016.7846015

Basic circuit theoretic considerations of LED driving: Voltage-source versus current-source driving

Zheng Dong, Chi Kong Tse, S. Y.Ron Hui

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

8 Citations (Scopus)

Abstract

Light-emitting-diodes (LEDs) are solid-state devices with specific v-i characteristics. In this paper we study the basic requirement of the driving circuits and discuss the proper approach to driving LEDs from the circuit theoretic viewpoint. We compare voltage source driving and current source driving, and discuss their relative advantages and constraints. We specifically introduce the use of duality principle in developing new current-source drivers which are mostly unknown but are theoretically more versatile compared to their conventional voltage-source counterparts. Although the study exploits very basic circuit theory, it is not always borne in mind or known by practitioners the impact of the choice of circuit topologies on the current and voltage ripples, range of duty cycle variation, sensitivity, and efficiency of LED drivers. This paper presents a systematic and comparative exposition of the circuit theory of driving LEDs, with experimental evidences supporting the major conclusions. Finally, we illustrate how these results can readily lead to an effective LED driver design.

Original language	English
Title of host publication	2016 IEEE 2nd Annual Southern Power Electronics Conference, SPEC 2016
Publisher	IEEE
Pages	30DUMMY
ISBN (Electronic)	9781509015467
DOIs	https://doi.org/10.1109/SPEC.2016.7846015
Publication status	Published - 1 Jan 2016
Event	2nd IEEE Annual Southern Power Electronics Conference, SPEC 2016 - Auckland, New Zealand Duration: 5 Dec 2016 → 8 Dec 2016

Conference

Conference	2nd IEEE Annual Southern Power Electronics Conference, SPEC 2016
Country/Territory	New Zealand
City	Auckland
Period	5/12/16 → 8/12/16

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

More information

10.1109/SPEC.2016.7846015

Cite this

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title = "Basic circuit theoretic considerations of LED driving: Voltage-source versus current-source driving",

abstract = "Light-emitting-diodes (LEDs) are solid-state devices with specific v-i characteristics. In this paper we study the basic requirement of the driving circuits and discuss the proper approach to driving LEDs from the circuit theoretic viewpoint. We compare voltage source driving and current source driving, and discuss their relative advantages and constraints. We specifically introduce the use of duality principle in developing new current-source drivers which are mostly unknown but are theoretically more versatile compared to their conventional voltage-source counterparts. Although the study exploits very basic circuit theory, it is not always borne in mind or known by practitioners the impact of the choice of circuit topologies on the current and voltage ripples, range of duty cycle variation, sensitivity, and efficiency of LED drivers. This paper presents a systematic and comparative exposition of the circuit theory of driving LEDs, with experimental evidences supporting the major conclusions. Finally, we illustrate how these results can readily lead to an effective LED driver design.",

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Dong, Z, Tse, CK & Hui, SYR 2016, Basic circuit theoretic considerations of LED driving: Voltage-source versus current-source driving. in 2016 IEEE 2nd Annual Southern Power Electronics Conference, SPEC 2016., 7846015, IEEE, pp. 30DUMMY, 2nd IEEE Annual Southern Power Electronics Conference, SPEC 2016, Auckland, New Zealand, 5/12/16. https://doi.org/10.1109/SPEC.2016.7846015

Basic circuit theoretic considerations of LED driving: Voltage-source versus current-source driving. / Dong, Zheng; Tse, Chi Kong; Hui, S. Y.Ron.
2016 IEEE 2nd Annual Southern Power Electronics Conference, SPEC 2016. IEEE, 2016. p. 30DUMMY 7846015.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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AB - Light-emitting-diodes (LEDs) are solid-state devices with specific v-i characteristics. In this paper we study the basic requirement of the driving circuits and discuss the proper approach to driving LEDs from the circuit theoretic viewpoint. We compare voltage source driving and current source driving, and discuss their relative advantages and constraints. We specifically introduce the use of duality principle in developing new current-source drivers which are mostly unknown but are theoretically more versatile compared to their conventional voltage-source counterparts. Although the study exploits very basic circuit theory, it is not always borne in mind or known by practitioners the impact of the choice of circuit topologies on the current and voltage ripples, range of duty cycle variation, sensitivity, and efficiency of LED drivers. This paper presents a systematic and comparative exposition of the circuit theory of driving LEDs, with experimental evidences supporting the major conclusions. Finally, we illustrate how these results can readily lead to an effective LED driver design.

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Basic circuit theoretic considerations of LED driving: Voltage-source versus current-source driving

Abstract

Conference

ASJC Scopus subject areas

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