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TPS74401输入电容ESR请教

user6111471
Intellectual 570 points
Other Parts Discussed in Thread: TPS74401

TPS74401电源芯片datasheet中，有如下描述“Good quality,low ESR capacitors should be used on the input，ceramic X5R and X7R capacitors are preferred”，请教一下，为什么输入要求是低ESR，如果选用的电容ESR较大，会有什么不好影响？

请教！