A TRIAC dimmable driver design for high dimmer compatibility in low power LED lighting

Author

Hyunchul Eom ; Youngjong Kim ; Yongsang Shin

Author_Institution

PCIA Applic. Eng., Fairchild Semicond., Bucheon, South Korea

fYear

2013

fDate

2-6 Sept. 2013

Firstpage

1

Lastpage

5

Abstract

LED lighting driver design in TRIAC dimming application has been faced with the difficulties of dimmer compatibility due to low LED power. The LED current dimming is basically controlled by primary side regulation with feedback modulation in the proposed TRIAC dimmable driver. With system compactness and better dimmable compatibility, passive bleeder is designed to stabilize TRIAC turn-on and turn-off operation. Filter discharger is also introduced to keep uniformity of dimmer output voltage to remove visible flicker. The proposed TRIAC dimmable LED driver has been experimentally verified in 3W LED lamp system.

Keywords

LED lamps; driver circuits; lighting; low-power electronics; semiconductor switches; thyristors; LED current dimming; LED lamp system; LED lighting driver design; feedback modulation; filter discharger; high dimmer compatibility; low power LED lighting; passive bleeder; power 3 W; primary side regulation; triac dimmable driver design; visible flicker; Capacitors; Fluctuations; Light emitting diodes; Lighting; Modulation; Thyristors; Voltage fluctuations; LED lighting; Power factor correction; TRIAC dimmer;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications (EPE), 2013 15th European Conference on

Conference_Location

Lille

Type

conf

DOI

10.1109/EPE.2013.6631916

Filename

6631916