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TPD4S214: why we design 30V tolerance on VBUS pin?

Part Number: TPD4S214

Hi,

we are looking for a USB current limit device that could tolerate 10V at VBUS, since they have met VBUS transient that break the USB current limit device. And during the surge test, the TVS on VBUS could clamp VBUS below 10V.

We have proposed this device, which is somehow overspec since we don't need other features integrated in this device.

The customer asked why we design this device with so high voltage tolerance? what's the target application case that VBUS could face voltage as high as 30V?

And do we plan to release lower voltage device?