TPS25741/TPS25741A USB Type-C™/PD Source Controlle

By Texas Instruments 22

TPS25741/TPS25741A USB Type-C™/PD Source Controlle

Texas Instruments' TPS25741/TPS25741A implements a source compliant to USB power delivery 2.0 and USB Type-C Revision 1.2. It can be used in either a power mux or DC-DC implementation.

The device monitors the CC pin to detect a USB Type-C sink attachment, then enables the GDNG and G5V gate drivers to apply 5 V to VBUS. It then offers up to three voltages using USB power delivery. In order to source the second voltage the G5V gate driver is disabled and the GDPG gate driver is enabled. In power mux implementations, all gate drivers are used and the CTL pins are not necessary. In DC-DC implementations only the GDNG gate driver is necessary and the CTL pins program the power supply for the required voltage. The device automatically discharges VBUS per USB Power Delivery requirements. The PSEL, HIPWR, PCTRL, and EN9V/EN12V pins are used to configure the voltages and currents advertised.

The device typically draws 5.4 µA (8 µA if VDD = 0 V) when no device is attached. The port attachment indicator (UFP or DVDD) outputs may be used to disable the power source until a sink is attached for more system power savings

Protection features include over-voltage, over-current, over-temperature, IEC for CC pins, and system override of gate drivers (GD).

  • USB power delivery 2.0 certified provider, USB Type-C Revision 1.2 compliant source
  • Pin-selectable voltage advertisement
    • 5 V, 12 V, 20 V (TPS25741)
    • 5 V, 9 V, 15 V (TPS25741A)
  • Pin-selectable peak power settings
    • 12 options 15 W to 100 W (TPS25741)
    • 11 options 15 W to 81 W (TPS25741A)
  • Port power management, plug polarity, plug status, audio, and debug accessory indicators
  • 5.4 µA quiescent current when unattached
  • High voltage and safety integration
    • Overvoltage, overcurrent, and overtemperature protection and VBUS discharge
    • IEC 61000-4-2 protection on CC1 and CC2
    • Input pin for fast shutdown under fault
    • Control of external N-ch MOSFETs and P-ch MOSFETs for single power path or power mux architecture
    • 2-pin external power supply control
    • Wide VIN supply (4.65 V to 25 V)
  • Built-in 1.8 V at 35 mA supply output
  • Desktop and all-in-one computers
  • Automotive infotainment
  • Hub downstream ports
  • USB-power delivery adapter (USB data capable)