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TPS54329: EN pin Function?

Part Number: TPS54329

Hello Team,

May I know the EN pin function of TPS54329?

If EN pin is left floating (internally pull down by 440k-ohm in the device), what will the output voltage be on EVM?

We did the experiment and found that when EN pin is floating (also measure by multimeter to make sure en voltage is about 0V), with input voltage rises up, its output voltage rises as well.

It seems that En pin could not turn off the device? May we know if it is the normal behavior of TPS54329?

Thank you.

Regards,

Ting