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你好，LM5170应用boost模式下使能后没有出PWM信号通道没有工作，去掉HV高压瞬间或者用万用表笔点着ISETA脚才发出PWM信号，但是也没有形成闭环。这是什么情况呢？buck模式正常的。
不是的ISETA脚只接到电压及电流的反馈环路，没接其他地方
