Systems and methods for current matching of LED channels

摘要

System and method are provided for generating a plurality of channel currents. The system includes a channel reference generator configured to receive a first reference current and generate at least a first channel driving current and a second channel driving current, a first channel current divider configured to receive the first channel driving current and generate a first input current, a second input current, and a third input current, a second channel current divider configured to receive the second channel driving current and generate a fourth input current, a fifth input current, and a sixth input current, a first channel driver configured to receive the first input current, the second input current, and the third input current and generate a first channel current, and a second channel driver configured to receive the fourth input current, the fifth input current, and the sixth input current and generate a second channel current.

主权项

1. A system for generating a plurality of channel currents, the system comprising:
a channel reference generator configured to receive a first reference current and generate at least a first channel driving current and a second channel driving current; a first channel current divider configured to receive the first channel driving current and generate a first input current, a second input current, and a third input current; a second channel current divider configured to receive the second channel driving current and generate a fourth input current, a fifth input current, and a sixth input current; a first channel driver configured to receive the first input current, the second input current, and the third input current and generate a first channel current; and a second channel driver configured to receive the fourth input current, the fifth input current, and the sixth input current and generate a second channel current; wherein:
a sum of the first input current and the second input current is equal to the first channel driving current;the second input current is equal to the third input current;a sum of the fourth input current and the fifth input current is equal to the second channel driving current; andthe fifth input current is equal to the sixth input current.