DocumentCode :
1890880
Title :
A double-loop control LED backlight driver IC for medium-sized LCDs
Author :
Seok-in Hong ; Jin-Wook Han ; Dong-Hee Kim ; Oh-Kyong Kwon
Author_Institution :
Hanyang Univ., Seoul, South Korea
fYear :
2010
fDate :
7-11 Feb. 2010
Firstpage :
116
Lastpage :
117
Abstract :
We present an LED backlight driver IC that uses a double loop control method to achieve 50 kHz PWM dimming frequency with 8 b resolution. The measured output voltage of the boost converter is 26.41 V and its maximum ripple voltage is 500 mVpp. Measured rise and fall times of the LED current are 86 ns and 7 ns, respectively.
Keywords :
light emitting diodes; liquid crystal displays; power convertors; LED backlight driver IC; PWM dimming frequency; boost converter; double loop control; frequency 50 kHz; light emitting diodes; liquid crystal displays; medium sized LCD; pulse width modulation; ripple voltage; time 7 ns; time 86 ns; voltage 26.41 V; voltage 500 mV; Biomedical measurements; Energy consumption; Feedback loop; Frequency; Light emitting diodes; Programmable control; Pulse width modulation; Regulators; Transient response; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
ISSN :
0193-6530
Print_ISBN :
978-1-4244-6033-5
Type :
conf
DOI :
10.1109/ISSCC.2010.5434081
Filename :
5434081
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1890880
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