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TPS65982 sink power capability

Kai Hsiao
Guru 12675 points
Other Parts Discussed in Thread: TPS65982

Dear Sir 

If we use TPS65982 to connector with a TypeC power adapter ,may i use a MCU to read TPS65982 and know the power adapter's watt??

This mean I insert a 60W adapter ,i can use MCU to know this adapter is a 60W adapter through TPS65982 

which register can do??

Thanks

  • 0
    Guru 12675 points
    Dear Sir

    Looking forward your help

    Thanks
  • 0
    TI__Mastermind 30280 points

    Kai,

    The TPS65982-CONFIG lets you Configure the Sink Capabilities of the TPS65982 to automatically negotiate PD Contracts with AC Adapters following the USB PD Specification. In other words, you can modify PDO2 to accept a 20V,3A (60W) fixed Source PDO from an AC Adapter.

    There is no need for an MCU to read I2C registers from the TPS65982 if the system just needs to accept any power supply >60 Watts.

    However, if there is more complexity to your system, you can refer to the TPS65982 FW User's Guide, Appendix A for the I2C Register Map and 4CC Commands.

    As soon as an AC Adapter is connected, Reg. 0x30 Rx Source Capabilities (page 60 of FW User's Guide) will store the PDOs of the Adapter in the same format they are transmitted in using PD Packets.