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tps5430 动态调压

Other Parts Discussed in Thread: TPS5430

TI 电源工程师们,你们好 ,有个项目需求,需要使用DC-DC 动态调压。输出电流2A ,我使用TPS5430 如下原理图调压。

我现在在VC 处不加电压,电路正常,加入0.1 V ,vsense 是0.8V ,当讲到1.6V 时Vsense 时0.610V ,加到 1.7V 时 ,VSENSE 又成了0.623 V ,在往上加 。VSENSE 就变大了,这处为什么会这样 ?