SLVSEW9B August 2019 – December 2019 TPS66120 , TPS66121
PRODUCTION DATA.
Figure 17 shows a USB Type-C single port design using a power delivery controller. For this system, a single 5-V supply in the system is used to supply power to the external load switch, as well as, the connector VCONN power. The VIN terminal of the TPS66121 is tied to GND and the TPS66121 is powered by the VBUS LDO once VBUS is present. In addition, the TPS66121 supplies power to the 5-V supply of the PD controller via the VLDO output. The PPHV integrated power path provides power to the system and battery charger from VBUS when the TPS66121 Sink path is enabled. An external 5-V load switch is shown to provide power to VBUS when system is configured as a Source.