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

LED BLU의 최적 소비전력을 위한 선형적 피드백 제어기능을 가지는 드라이버 설계

  • Received : 2012.08.22
  • Accepted : 2012.09.13
  • Published : 2012.10.01

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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