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This is due to the capacitors on the load device requesting a large amount of current, characterized by Icap = Ccap x dvdV/dt.

The surge current limiting section of the USB3.2 specification is shown below.

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While the source device should do most of the voltage regulation, TI recommends a transient-voltage suppressing diode be implemented on the VBUS_IN rail. The TVS2200 product is recommended within the PMIC’s datasheet. TI additionally recommends a (Schottky) diode be placed from VBUS to ground. This is due to the possibility of large ground currents during sudden disconnects due to inductive effects in a cable.

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a voltage surge when a cable with current actively running through it is unplugged, causing inductive ringing (as mentioned here). The TVS2200 product is recommended for a 20V spec.

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Power Configuration

Resistor Dividers

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