基于HSI模型的全彩LED驱动电路设计

摘要

为了改善LED模组的照明质量,实现对LED模组色温的调节,通过分析LED模组的驱动电路技术,提出一种基于HSI模型的全彩LED驱动电路的设计方案.该驱动电路利用三色比例调节达到所需要的颜色,并采用PID调节方式,以保证调节的稳定.另外还可以调节输出光的色温和光强,达到了良好的照明效果.%In order to improve the illumination quality of LED module and realize the LED module colour temperature adjustment. a design scheme of full-color LED drive circuit based on the HSI model is put forward after the analysis of LED module driver circuit technology. The needed colours is achieved by the drive circuit with three-color proportion adjustment and PID regulating mode to ensure the stability of adjustment. The color temperature and light intensity of output light can also be adjusted. Therefore, a much better illumination effect is obtained.