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TPS65983B: Configuration Utility Questions -- Configuring Modes on the fly

Jon Key
Intellectual 920 points

Part Number: TPS65983B
Other Parts Discussed in Thread: TPS65981, TPS65981EVM

Hello All,

I am working with a customer using the TPS65983B and we have the following questions.

Is there a way to configure the ADCs on the device? (with or with out the config tool)

Is there a way to change the configuration on the fly (say to remove or add the 12 to 20V contract) or is this only done on boot using the pin-strapping to choose a configuration? We would like to create two sets of configurations and load them depending on the pin strapping for DEBUG_CTL1&2. Currently we don't have a data connection to maintain when we are sinking power so a data path disconnect is not an issue.

When using the TPS6598x configuration utility the only low region bin that I have is for the TPS65981, is there any issues with programming the TPS65983B with the TPS65981 low region bin?

  • 0
    TI__Genius 10370 points
    Hi Jon Key,

    Are you building a thunderbolt ecosystem? If you're not building a thunderbolt system, then the TPS65983/B is NOT recommended. Also, the TPS65983 is not recommended for new design. I would recommend using the TPS65981EVM, which is customizable to fit most type of builds.
  • 0 in reply to Aramis P. Alvarez
    TI__Intellectual 920 points
    Hi Aramis,

    Would the TPS65981 allow the configurations mentioned above? Configuring the ADCs and offering on the fly configuration of 12 to 20V contract?
  • 0 in reply to Jon Key
    TI__Genius 10370 points
    Hi Jon,

    One can set several Sinking/Sourcing Capabilities with different PDO's. For example, you can set a 5V, 12V, and 20V PDO. When operating as a sink, it can sink 5V, 12V, or 20V depending on the source PD controller PDO capabilities. Our PD controller EVM's (i.e. TPS65981EVM) all have a variable DC/DC controller, that will change the output voltage depending on the PD power negotiation. The voltage at the output of the DC/DC is configured by a resistor divider. Please refer to the TPS65981EVM user's guide to see how this is implemented.