Title :
A CMOS LED print head driver with compensation circuits
Author :
Chiang, Cheng-Ta ; Kuo, Chun-Ting ; Huang, Yu-Chung
Author_Institution :
Dept. of Electr. Eng., Nat. Chia Yi Univ., Chiayi, Taiwan
Abstract :
In this paper, a CMOS LED print head driver with compensation circuits is newly proposed. The proposed chip adopts dynamic pulse width modulation (DPWM) to make pulse width more variable. Due to process and fabrication variation, two compensation circuits are proposed. One is to perform the chip compensation, and the other is to do the pixel compensation. Based upon the device parameters of 0.5 μm 1P2M CMOS technology with 3.3 V power supply, all the functions and performance of the proposed CMOS LED print head driver with compensation circuits are successfully tested and proven through SPICE simulations. The area including ESD I/O pads is 2000 × 2000 μm2. The proposed chip is suitable for LED printers.
Keywords :
CMOS integrated circuits; LED printers; SPICE; pulse width modulation; 1P2M CMOS technology; CMOS LED print head driver; ESD I/O pads; SPICE simulation; chip compensation; compensation circuit; dynamic pulse width modulation; fabrication variation; pixel compensation; size 0.5 mum; voltage 3.3 V; Arrays; CMOS integrated circuits; CMOS technology; Driver circuits; Light emitting diodes; Printers; Pulse width modulation; LED driver; LED printer; compensation circuits;
Conference_Titel :
Industrial Electronics and Applications (ISIEA), 2011 IEEE Symposium on
Conference_Location :
Langkawi
Print_ISBN :
978-1-4577-1418-4
DOI :
10.1109/ISIEA.2011.6108812
