• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 33 subscribers
  • Views 515 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS65982 EVM as a tester

Ian Wong
Prodigy 20 points
Other Parts Discussed in Thread: TPS65982, HD3SS460

I'm planning to get a TPS65982 EVM and would like to clarify something.

I've got an 90W (20VDC) output multi-tip adaptor to power this board.

So if I config it as config ID #0, I can charge with the type-C port for upto 20V 4.5A (depends on whatever I plugged). This part I have no problem.

While I config it as config ID#1, it should be able to sink 5V3A. How should I sink it? By hooking an E-Loading for 3A at VBus test point?

Thank You.

  • 0
    TI__Expert 6505 points

    Hi,

    I am not sure I got your question correctly. But I belive you have a Two TPS65982EVM connected over Type-C cable. One of it is configured for a DFP role(Power producer) and the other for a UFP role(power consumer)?

    To Config the DFP EVM to supply 20V at 4.5A, you need to configure its Source capablities. You can define multiple Source PDO with different configurations like

    PDO1: 5V@3A max.

    PDO2: 12V@3A max.

    PDO3: 20V@4.5A max

    To config the UFP EVM you need to define the Sink capablities like this

    PDO1: 5V@0.9A operating current and 3A max current

    PDO2: 20V@3A operating current and 4.5A as max current.

    With these configurations the PD negotiation should set it to use 20V option normally.

    Now if you want to change the VBUS voltage level then the PD contract has to be broken and renogitated with the UFP EC commanding it to use the 5V on VBUS.

    If the PD contract is established at 5V on VBUS, you can enable and E-loading to draw 3A of current on VBUS of UFP EVM.

    Hope I could understand and answer your question. Let me know if you need further clarification.

    Regards,

    Arun

  • 0 in reply to Arun Menon
    Prodigy 20 points
    Hi Arun,

    Thank You for your reply.

    I want to test powerbanks and AC wall adapter chargers. So I need something to be able to act as either DFP and UFP.
    I search and found TPS65982 EVM but I'm not so sure on the UFP sink part.
    I actually found TPS25810EVM first but it can only be the charger side.

    Just would like to clarify how it works to avoid buying the wrong thing.
    You've already answered my question. Thanks!

    Best Regards,
    Ian Wong
  • 0 in reply to Ian Wong
    TI__Expert 6505 points
    Hi,

    Actually the TPS65982 EVM can be configured for bothe Source(Producer) and Sink Roles(Consumer). It depends upon how you are configuring it.

    I would suggest you configure one TPS65982 EVM for Dual Role using the standard configurations available with our TPS6598x Configuration Tool. You can use the default configuration of "TPS65982 Dual-Role Port, Prefers Power Source, Data Agnostic, supports HD3SS460 Mux" for this. This configuration I believe is suitable for the powerbank application.

    For the AC Wall adapter application you can use another TPS65982 EVM configured to use the configuration of a Source Role only. You can use the "TPS65982 Downstream-Facing Port Only, supports HD3SS460 Mux" configuration.

    In the dual role configuration the Power bank can act as both a Power Source when connected to peripherals like Mobiles/HDD etc and can still act as a Power consumer when connected to a Wall charger etc. The PD negotiation will take care of it depending upon the Source and Sink capabilities of both the devices.

    Regards,
    Arun