Optimal LED array combination for dual-loop CCM boost driver

Author

Lin, Ray-Lee ; Liu, Shun-Yao ; Tsai, Cheng-Jia

Author_Institution

Nat. Cheng Kung Univ., Tainan, Taiwan

fYear

2012

fDate

7-11 Oct. 2012

Firstpage

1

Lastpage

9

Abstract

This paper presents the optimal light-emitting-diode (LED) array combination for dual-loop continuous-conduction mode (CCM) boost driver. In order to more precisely characterize the non-linear V-I curve of LEDs, the LED model with Taylor series expression is constructed. Moreover, the system transfer functions are derived by equivalent circuit of the boost driver to predict the system performance, including loop gain and the effect of sub-harmonic oscillation. Based on the given circuit specifications and parameters, the predicted results are compared with the SIMPLIS^® simulations and measured results to verify the derived transfer functions.

Keywords

driver circuits; equivalent circuits; harmonic oscillators (circuits); light emitting diodes; power convertors; series (mathematics); transfer functions; SIMPLIS simulation; Taylor series expression; boost converter; continuous-conduction mode; dual-loop CCM boost driver; equivalent circuit; light-emitting-diode; loop gain; nonlinear V-I curve; optimal LED array combination; subharmonic oscillation effect; system transfer function; Equivalent circuits; Integrated circuit modeling; Light emitting diodes; Mathematical model; Taylor series; Boost converter; Continuous-conduction-mode; Driver circuits; Dual-loop control; Lighting-emitting-diode; Modeling; System analysis; Taylor series; sub-harmonic oscillation;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting (IAS), 2012 IEEE

Conference_Location

Las Vegas, NV

ISSN

0197-2618

Print_ISBN

978-1-4673-0330-9

Electronic_ISBN

0197-2618

Type

conf

DOI

10.1109/IAS.2012.6374064

Filename

6374064