USB EZ-PD™ Type-C

[Anderson_Lin]

PFET Gate Drivers on VBUS Path

CCG3PA has two integrated PFET gate drivers to drive external
PFETs on the VBUS provider and consumer path. The
VBUS_P_CTRL gate driver has an active pull-up, and thus can
drive high, low or High-Z.

Q: How to implement High-Z in FW ?

[PranavaYN · Accepted solution]

Hi,

VBUS_P_CTRL is internally pulled up to VBUS_IN_DISCHARGE. Therefore it can't be driven High-Z when VBUS_IN_DISCHARGE is connected to the input supply. This is necessary to turn VBUS provider FET on and off.

May I know the reason why you want to drive that pin to High-Z?