원문정보
A Desing of 96-channel LED driver IC for full color LED display using dual channel control
초록
영어
LED driver IC is used in a full-color LED display system. In this paper, we prpose a 96-channel LED driver IC with the same size as 32-channel LED driver IC. Constant current flow in the channel is configurable via an external resistor. Proposed IC supply constant current of two channels as one of the current source so that it is reduced DC control switch and current source as half when compared to existing channel control method. LED brightness is adjusted by 12-Bits PWM(Pulse Width Modulation) and 8-Bits DC(Dot Correction). A real-time monitoring of IC temperature (120°C/160°C) and LED status (open/short) is provided by LED driver IC and the user can receive warning and get information on problems. A 96-channel LED driver IC is produced using samsung 0.13 um process and the size is 4 mm x 4 mm. A 96-channel LED driver IC with the same size as existing 32-channel LED driver IC can implement. In this paper, channel current characteristic and channel current control function, temperature and LED fault detect function were measured in order to verify embodied proposed IC
목차
I. 서론
II. Constant Current Regulator 설계
1. Operational Amplifier Schematic 및 Simulation
2. Bandgap Reference Schematic 및 Simulation
3. Constant Current Regulator Schematiiic 및 simulation
III. Control Function 설계
1. PWM(Pulse Width Modulation) Control Schematic
2. Dot Correction Control Schematic
IV. 96-Channel LED Driver IC 구현
V. 결론
감사의 글
참고문헌