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LM5022电压反馈脚FB的响应速度是多少?

Other Parts Discussed in Thread: LM5022

我想用这个芯片做一个恒流源电源,通过采样电阻来知道输出电流的大小并且控制电流大小为一个恒值,此时我想用单片机来采集采样电阻上的电压,然后根据反馈来用单片机给LM5022的FB端口输出一个PWM波来控制LM5022的工作,以此来实现恒流输出,但我不知道FB端口的响应速度是多少从而不知到该选用多少频率的单片机输出PWM波的频率,希望各位解答,谢谢了。