A LED Driver With Switched Capacitor

A LED Driver With Switched Capacitor

This paper proposes a switched capacitor-based converter to drive high-power light-emitting diodes (LEDs). In contrast to conventional constant current dc drivers, the current pulse is provided by a switched capacitor. The proposed approach differs from the traditional switched-capacitor-based one,...

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Veröffentlicht in:IEEE transactions on industry applications 2014-09, Vol.50 (5), p.3046-3054
Hauptverfasser: Eloi dos Santos Filho, Esio, Miranda, Pedro H. A., Sa, Edilson M., Antunes, Fernando L. M.
Format: Artikel
Sprache:eng
Schlagworte:
Arrays
Capacitors
Inductors
Light emitting diodes
Switches
Switching frequency
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container_issue 5
container_start_page 3046
container_title IEEE transactions on industry applications
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creator Eloi dos Santos Filho, Esio
Miranda, Pedro H. A.
Sa, Edilson M.
Antunes, Fernando L. M.
description This paper proposes a switched capacitor-based converter to drive high-power light-emitting diodes (LEDs). In contrast to conventional constant current dc drivers, the current pulse is provided by a switched capacitor. The proposed approach differs from the traditional switched-capacitor-based one, because it uses a small inductor to improve the switching behavior of the converter. Based on the charge control analysis, the effects of switching devices on the proposed converter are evidenced and evaluated. A 6 W, 24 V laboratory prototype has been implemented, while experimental results are presented and discussed to demonstrate the technical feasibility of the proposed converter applied as LED driver.
doi_str_mv 10.1109/TIA.2014.2308397
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subjects Arrays
Capacitors
Inductors
Light emitting diodes
Switches
Switching frequency
title A LED Driver With Switched Capacitor
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