A double-loop control LED backlight driver IC for medium-sized LCDs

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 mV pp . Measured rise and fall times of the LED current are 86...

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Bibliographic Details
Published in2010 IEEE International Solid-State Circuits Conference - (ISSCC) pp. 116 - 117
Main Authors Seok-in Hong, Jin-Wook Han, Dong-Hee Kim, Oh-Kyong Kwon
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.02.2010
Subjects
Biomedical measurements
Energy consumption
Feedback loop
Frequency
Light emitting diodes
Programmable control
Pulse width modulation
Regulators
Transient response
Voltage control
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Summary: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 mV pp . Measured rise and fall times of the LED current are 86 ns and 7 ns, respectively.
ISBN:1424460336
9781424460335
ISSN:0193-6530
2376-8606
DOI:10.1109/ISSCC.2010.5434081