Equivalent Circuit Model of Light-Emitting-Diode for System Analyses of Lighting Drivers

Author

Lin, Ray-Lee ; Chen, Yi-Fan

Author_Institution

Nat. Cheng Kung Univ., Tainan, Taiwan

fYear

2009

fDate

4-8 Oct. 2009

Firstpage

1

Lastpage

5

Abstract

This paper presents the equivalent circuit models of the light-emitting-diode, including the piece-wise linear model, DC model and small-signal model. In order to characterize the equivalent circuit model of the LEDs, a piece-wise linear model is built by adopting the superposition concept of the multi-branch equivalent circuit model. Furthermore, in order to perform the DC and small-signal analysis of the LEDs, the equivalent DC and small-signal resistance will be derived from the piece-wise linear model.

Keywords

driver circuits; equivalent circuits; light emitting diodes; piecewise linear techniques; semiconductor device models; DC model; LED; light-emitting-diode; lighting driver; multibranch equivalent circuit model; piece-wise linear model; small-signal analysis; small-signal resistance; system analysis; Circuit simulation; Cities and towns; Current measurement; Driver circuits; Equivalent circuits; Light emitting diodes; Linear approximation; Piecewise linear approximation; Piecewise linear techniques; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 2009. IAS 2009. IEEE

Conference_Location

Houston, TX

ISSN

0197-2618

Print_ISBN

978-1-4244-3475-6

Electronic_ISBN

0197-2618

Type

conf

DOI

10.1109/IAS.2009.5324876

Filename

5324876