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TPS562201: 输出电压无法稳定在5V

Part Number: TPS562201
Other Parts Discussed in Thread: TPS562208

尊敬的团队,我在使用TPS562201做一个12-5V电路,原理图如下。

但是,在接上负载之后输出电压只有4V左右,SW引脚的波形如下:

请问,这是不是因为负载电流不够,电路工作在了ECO模式呢?如果是,请问负载电流和ECO模式的具体关系是什么呢?

这种情况下,是否需要考虑更换其他芯片,例如TPS562208