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TPS65988: Max # of Source PDO's, and understanding Bank-0/Bank-1

Part Number: TPS65988

I'm trying to understand full capability and implications of the # of Source PDO's programmed into TPS65988.  In this case, only considering Port-2

  • In the config tool, appears there are actually 2 Banks of PDO's that can be programmed.  What is the intent of these 2 banks, and how are they typically utilized in a system?
  • Can the banks be 2 different sets of PDO's, that are selected based on some condition on Port-1, for example, enabling one of the banks based on the Port-1 Negotiated Contract?
  • What is the max # of PDO's one can advertise?   The tool appears to allow up to 7 PDO's per Bank, for total of 14 (including the mandatory fixed 5V PDO1 in each bank).  
  • Is that accurate for max # of PDO's?   (7 per bank)
  • Are there negative implications of utilizing this many PDO's in system?

Thank you in advance.

  • Hi Eric,

    PDO bank can be selected dynamically, based on Externally Powered bit or based on  ActivePDOBank bit status. Yes, these banks can have different PDOs. Please check register 0x32 definition in TRM. 

    You are right, the maximum number of PDOs is 7. There is no issue w/ using maximum number of PDOs. 

    Thanks
    Prajith