TY - GEN
T1 - RGB LED backlight driving system with dynamic voltage regulation capability
AU - Chen, Jing Hsiao
AU - Wang, Shun Chung
AU - Liu, Yi Hua
AU - Cheng, Yu Shan
AU - Yang, Zong Zhen
PY - 2013
Y1 - 2013
N2 - Advantages including higher luminance efficacy, local dimming capability, wider color gamut, faster response, longer operation life and lesser environmental issues makes RGB LED backlight system suitable for high-end display units. For RGB LEDs, the forward voltages for the red, green and blue LEDs are different. Therefore, dynamic voltage regulation (DVR) can be applied to optimize the power stage design. In this paper, a RGB LED backlight driving system is proposed. The proposed system consists of a power factor correction pre-stage and a digitally-controlled LLC resonant converter. The output voltage of the presented LLC resonant converter is adjusted by a digital controller so that RGB LED maintains the desired string current; this will improve the efficiency of the driving system. According to the experimental results, the presented system can adjust the output voltage of the LLC resonant converter according to the requirements of the RGB LED string.
AB - Advantages including higher luminance efficacy, local dimming capability, wider color gamut, faster response, longer operation life and lesser environmental issues makes RGB LED backlight system suitable for high-end display units. For RGB LEDs, the forward voltages for the red, green and blue LEDs are different. Therefore, dynamic voltage regulation (DVR) can be applied to optimize the power stage design. In this paper, a RGB LED backlight driving system is proposed. The proposed system consists of a power factor correction pre-stage and a digitally-controlled LLC resonant converter. The output voltage of the presented LLC resonant converter is adjusted by a digital controller so that RGB LED maintains the desired string current; this will improve the efficiency of the driving system. According to the experimental results, the presented system can adjust the output voltage of the LLC resonant converter according to the requirements of the RGB LED string.
UR - http://www.scopus.com/inward/record.url?scp=84880746222&partnerID=8YFLogxK
U2 - 10.1109/PEDS.2013.6527042
DO - 10.1109/PEDS.2013.6527042
M3 - 会议稿件
AN - SCOPUS:84880746222
SN - 9781467317900
T3 - Proceedings of the International Conference on Power Electronics and Drive Systems
SP - 349
EP - 353
BT - 2013 IEEE 10th International Conference on Power Electronics and Drive Systems, PEDS 2013
T2 - 2013 IEEE 10th International Conference on Power Electronics and Drive Systems, PEDS 2013
Y2 - 22 April 2013 through 25 April 2013
ER -