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LM3414 PWM控制 不能很好恒流

Other Parts Discussed in Thread: LM3414

如果不用pwm调光,LM3414能实现很好的恒流效果。但是,采用外部提供PWM信号进行调光,无法实现很好的恒流效果,有较大的波动。或者无法实现恒流,利用函数信号发生器反复调试,效果都不理想.