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TPS746EVM-009: 上电时序

Part Number: TPS746EVM-009
Other Parts Discussed in Thread: TPS746

Hi,

测了TPS746EVM-009的上电时序。

在没有负载的情况下输出和输入的延时很小;

负载10mA时,输出和输入的延时大约为10ms,

负载增加到200mA时,输出和输入的延时增加到了17ms。

请问加了负载之后,TPS746的输出延时为什么大了这么多?

测试时,输入电压3.3V,输出电压设置了1.8V。

以下三个截图分别是在无负载,10mA负载,200mA负载下的测试结果。

TPS746EVM no LoadTPS746EVM 10mA LoadTPS746EVM 200mA Load