| Title |
A Study on 16-Channel LED Driver IC for Full-Color LED Display |
| Authors |
김상규(Kim, Sang-Kyu) ; 이지훈(Lee, Ji-Hoon) ; 정원재(Jung, Won-Jae) ; 정효빈(Jung, Hyo-Bin) ; 박준석(Park, Jun-Seok) |
| DOI |
https://doi.org/10.5370/KIEE.2012.61.9.1275 |
| Keywords |
Constant current ; Pulse width modulation ; Dot correction ; Error detection |
| Abstract |
This paper proposes the 16-channel LED Driver IC for Full color LED display system. The proposed LED driver IC in this paper can draw current independent of temperature and supply voltage in each channel. Current flow in the channel is configurable via an external resistor. LED brightness is adjusted by 12-Bit PWM(Pulse Width Modulation) and 8-Bit DC(Dot Correction). A real-time monitoring of IC temperature (130°C/150°C) and LED status (open/short) is provided by LED driver IC and the user can receive warning and get information on problems. A 16-channel LED driver IC is produced using 0.35 um BCD process and the size is 2.5mm×2.5mm. In this paper, channel current characteristic and channel current control function were measured in order to verify am embodied 16-channel LED driver IC by producing a single IC test board. |