標題: A Charge-Reservoir with Buck-Store and Boost-Restore (BSBR) Technique for High Efficient Conversion and Low Cost Solution of RGB LED Display Panels
作者: Hsieh, Chun-Yu
Yang, Chih-Yu
Huang, Ming-Hsin
Li, Don-Hwan
Chen, Chi-Lin
Chen, Ke-Horng
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: field sequential color;liquid crystal display;color breakup;color filterless;Motion Blur;LED Backlight
公開日期: 2009
摘要: A boost converter with buck-store and boost-restore (BSBR) technique fabricated by 0.25 mu m CMOS BCD process can provide different supply voltages to drive series RGB LEDs in sequence for reducing the power consumption on the constant current generator. The proposed technique not only stores and restores extra charge during the transient time of the reference tracking response to improve the efficiency but also enhances the reference tracking response to greatly reduce load transition time. Experimental results show that the period of reference-tracking response can be improved. When the load current is 100mA, the periods of reference down-tracking and up-tracking are smaller than lops and 20 mu s, respectively. Furthermore, this technique also can provide a regulated voltage to drive the sub-block implemented in the LCD system. The maximum efficiency of charge recycling is up to 94% and the maximum efficiency of this boost converter is 92.5%. Experimental results demonstrate fast and efficient reference tracking performance is achieved by the proposed BSBR technique.
URI: http://hdl.handle.net/11536/28454
期刊: 2009 SID INTERNATIONAL SYMPOSIUM DIGEST OF TECHNICAL PAPERS, VOL XL, BOOKS I - III
起始頁: 640
結束頁: 643
顯示於類別:會議論文