Integrated LED Driver Solution for Backlighting TFT-LCD Panels with Adaptive Power Control and Phase Shifted PWM Dimming
An adaptive power control scheme is presented for the light-emitting diode (LED) backlighting application. Instead of choosing the worst case output voltage for the DC/DC converter, the adaptive power control scheme adjusts the output voltage to keep track of LED forward voltage variation, reducing the power dissipation of the LED driver system and hence increasing the reliability of the integrated driver solution. Adaptive power control technology and phase shifted PWM dimming have been built into mixed-signal ASICs for TFT-LCD panels. The test bench result shows the power saving of the adaptive power control scheme.
Adaptive power control LED backlighting phase shifted PWM
Zhiyu Yang Kien Vi Hendrik Santo Dilip S Tushar Dhayagude Edward Chang
Silica Incorporated, 3300 Central Expressway, Santa Clara, CA 95051, USA
国际会议
The 11th Asian Symposium on Information Display(ASID09)(第11届亚洲信息显示会议)
广州
英文
159-161
2009-10-07（万方平台首次上网日期，不代表论文的发表时间）