Title :
Optimal LED array combination for single-loop CCM boost driver
Author :
Lin, Ray-Lee ; Liu, Shun-Yao ; Chiang, Hsin-Wei
Author_Institution :
Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
This paper presents the optimal light-emitting-diode (LED) array combination for the single-loop continuous-conduction mode (CCM) boost driver. The Taylor series for describing the characteristics of the LED is used to characterize the relationship between the forward voltage and current of LEDs. Moreover, in order to predict the system performance, including system stability and maximum-efficiency power conversion, the equivalent circuit models of the LED boost drivers are constructed to derive the system transfer functions. Finally, the optimal combination of a 120-pcs LED array driven by the employed single-loop CCM boost converter is obtained and verified.
Keywords :
circuit stability; driver circuits; equivalent circuits; light emitting diodes; power convertors; series (mathematics); transfer functions; Taylor series; continuous-conduction mode; equivalent circuit model; light-emitting-diode; maximum-efficiency power conversion; optimal LED array combination; single-loop CCM boost converter driver; system stability; system transfer function; Equivalent circuits; Integrated circuit modeling; Light emitting diodes; Mathematical model; Taylor series; Boost converter; CCM; Continuous-conduction-mode; LED Array; Light-emitting-diode; Modeling; Quality factor; Single-loop; System analysis; Taylor series expression;
Conference_Titel :
Industry Applications Society Annual Meeting (IAS), 2012 IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4673-0330-9
Electronic_ISBN :
0197-2618
DOI :
10.1109/IAS.2012.6374062
