基于 MSP430单片机的 LED 调光系统研究

摘要

This article presents a method of dimming high power LED ,and designs a kind of controller for dimming LED using MSP430G2452 MCU based constant current ,which generates PWM signal to control the lighting device .The dimming fre-quency is up to 2M Hz ,and the duty cycle is adjustable .The dimming system has advantages of high power factor ,flicker-free dimming and dimming output stability .%提出了一种LED调光方式，设计了基于单片机控制的调光装置。采用MSP430单片机产生 PWM 信号控制调光模块。调光频率可达2M Hz ，且占空比可调。调光系统具有功率因数高、调光无闪烁、调光输出稳定的优点。