2592做可调输出电压,发现在固定反馈点的时候,输出电压随输入电压变化!!贴上原理图,希望能得到解答!!!!
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2592做可调输出电压,发现在固定反馈点的时候,输出电压随输入电压变化!!贴上原理图,希望能得到解答!!!!
输出电压为最高9.7V、200MA,通过单片机控制PWM调节反馈,进而调节电压。现在出现输出电压随输入电压改变,有点不解,请TI员工帮忙解答。