ZHCSIY2B July 2018 – August 2021 TPS65988
PRODUCTION DATA
The TPS65988 provides two GPIO controls that are hardware controlled to respond to Over/Under Voltage conditions to enable/disable the sink power paths. PEXT1 (GPIO16) and PEXT2 (GPIO17) are used for Port 1 and Port 2 respectively. The GPIO control can be used to control a discrete power path or load switch. The external sink path can be controlled by through the embedded controller (EC) or the configuration of the TPS65988. The EC approach allows the embedded controller to only close the sink path when the system is ready to start receiving power from VBUS. The configuration allows the PD controller to enable and disable the external power path and can be configured to only enable one path with the highest power PD contract.