DC level dimmable LED driver using DC distribution

Author

Gab-Su Seo ; Bo-Hyung Cho ; Kyu-Chan Lee

Author_Institution

Dept. of Electr. & Comput. Eng., Seoul Nat. Univ., Seoul, South Korea

fYear

2013

fDate

15-19 Sept. 2013

Firstpage

4650

Lastpage

4654

Abstract

This paper proposes a dc level-dimmable light emitting diode (LED) driving circuit using dc distribution. Eliminating lifetime-limiting electrolytic capacitors in LED ballast circuits by dc distribution improves system reliability. This new dimmable circuit controls LED lamps with minimum communication interfaces. The proposed dc-level dimming driver also improves system efficiency by matching the ballast input voltage to load condition. Detailed loss analysis confirms the efficiency improvements. The performance of this system is verified by 24-W LED lamp circuit implementation. The experiments confirm this method saves 8.1% energy compared to a conventional wire communication dimmable LED driver circuit.

Keywords

LED lamps; circuit reliability; driver circuits; lamp accessories; DC distribution; DC level dimmable LED driver; LED ballast circuits; LED lamp circuit; dc level-dimmable light emitting diode driving circuit; lifetime-limiting electrolytic capacitors; loss analysis; minimum communication interfaces; power 24 W; system reliability; wire communication dimmable LED driver circuit; Capacitors; Electronic ballasts; Integrated circuit reliability; LED lamps;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2013 IEEE

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/ECCE.2013.6647323

Filename

6647323