Pp-var-usb-rvp ~upd~

[USB-C / Lightning Port] ---> [VBUS] ---> [RVP Protection Circuitry] ---> [PP_VAR_USB_RVP] ---> [Main Charging IC]

: You should read a steady voltage between 3.7V and 5V . pp-var-usb-rvp

The Power Delivery (PD) controller negotiates the optimal power profile (e.g., stepping up from 5V to 9V, 15V, or 20V). [USB-C / Lightning Port] ---> [VBUS] ---> [RVP

: The device appears completely "dead" with no current draw on a USB power meter. stepping up from 5V to 9V