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TPS65983B: Configuration Tool

Alex Krupnik
Prodigy 10 points
Part Number: TPS65983B
Other Parts Discussed in Thread: TPS65987D, TPS25750

Hello,

It is my understanding that the TPS65983B chip is designed for TBT3 applications. However, would it still be possible to use it in a regular USB 3.0 PD design (Upstream Facing Port and Power Sink only)? I have a board with that chip designed in and I need to make the power delivery and USB Type C mux control work. I understand that I need a special version of the Application Configuration Tool. Could you please provide it to me?

Thank you.

Alex.

  • 0
    TI__Mastermind 34256 points

    Hi Alex,

    TPS65983B is intended only for TBT designs. Just to clarify, do you already have hardware with the 983B designed in? 

    I would strongly recommend integrating the TPS65987DDH (or TPS65988DDH for dual port) into your design if you're only looking at supporting PD3.0.

    Thanks and Regards,

    Raymond Lin

  • 0
    Prodigy 10 points

    Hello Raymond,

    Thank you for your reply.

    Yes, I do have a physical board with the TPS65983B chip on it. I do understand that the TPS65987DDH would be the right chip to use, but I'd like to make my board work, if possible. My application is relatively simple, so I was hoping that even this specialized TBT3 chip will be able to perform the basic functions that we need.

    Our only requirements are:

    1. Toggle GPIO to select correct USB SS mux position (based on Type C connector orientation)

    2. Negotiate 9V, 15V or 20V power from the power source (the source would be a USB PD Hub that can source sufficient power)

    Is this something that can be achieved with the TPS65983B?

    Alex.

  • 0 in reply to Alex Krupnik
    TI__Mastermind 34256 points

    Hi Alex,

    Let me clarify internally but I believe the TPS65983B has built in FW (ROM) code that is set to only work in TBT3 applications with not much customizable options (i.e. GPIO events, PDOs, etc.). 

    Thanks and Regards,

    Raymond Lin

  • 0 in reply to Alex Krupnik
    TI__Mastermind 34256 points

    Hi Alex,

    With the TPS65983B, GPIO configuration are locked to certain events to match certain reference designs (for Intel Thunderbolt Designs) so it's not possible to change the GPIO events to toggle USB SS mux. Changing these events can lead to unexpected behavior with the PD controller. 

    Was your board design based on an Intel Reference Design? 

    Thanks and Regards,

    Raymond Lin

  • 0 in reply to Raymond Lin
    Prodigy 10 points

    Thank you for checking on this. Since we are respinning the board anyway we will change the PD chip. Our choice is between the TPS65987D and the TPS25750. The latter seems more interesting as it has a smaller footprint. Would you recommend using it for our application?

    Edit: It looked like the link was dead, but after logging in I was able to access the Application Customization Tool for the TPS25750.

    Alex.

  • +1 in reply to Alex Krupnik
    TI__Mastermind 34256 points

    Hi Alex,

    If you want to support Alternate modes such as DisplayPort, then you'll need to use the TPS65987D. Otherwise based on your previous requirements (GPIO events to toggle USB SS, PDOs of 5/9/15/20V) then I would recommend the TPS25750, which is capable of up to 100W for both sourcing and sinking power roles. Attached below is a spreadsheet of our current PDs and their features/capabilities. The TPS25750 comes in both D and S variant, D representing internal power path and S representing external power path. More information can be found on the TPS25750 datasheet and Technical Reference Manual. 

    Let me know if you have any further questions or concerns! 

    Thanks and Regards,
    Raymond Lin

    Product Co6763.FAQ Product Comparison.pdfmparison: