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http://dx.doi.org/10.5370/KIEE.2012.61.10.1513

Driver Design with Linear Feedback Function for the Optimum Power Consumption of LED BLU  

Lee, Seung-Woo ((주)엘디티)
Yu, Nam-Hee (전북대학교 산학협력단)
Cho, Seong-Ik (전북대학교 전자공학부)
Shin, Hong-Gyu (원광대학교 전자및제어공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.61, no.10, 2012 , pp. 1513-1517 More about this Journal
Abstract
As demands for green industry increase, this paper proposes a power control technique that can substitute pre -existing CCFL(Cold Cathode Fluorescent Lamp) and optimize power consumption of LED BLU. This technique is designing LED driver circuit that make a DC-DC output voltage(VLED) to have a linear control function for a supply voltage of LED string. The proposed LED driver have an advantage that can increase or decrease a DC-DC output voltage compared with conventional LED driver. The designed LED driver circuit was designed using 0.35um CMOS technology. And its operation was verified through simulation.
Keywords
LED driver; LCD; BLU; Boost converter; LED string;
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