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Original question:

TPS55288: Buck High side MOSFET damage

TPS55288: How to setting the current of TPS55288

Lumina Gui
Genius 3175 points
Part Number: TPS55288
Other Parts Discussed in Thread: TPS65982DMC, TPS65988DK

Hi TI Teams,

Our thunderbolt 4 docking project is using TPS65988DK+TPS65982DMC+TPS55288, but new have some question for the current setting. The PDO setting is 20V/4.9A, we found that it will not be protected until 5.22A when loaded, but we need to protect it within 5A. May I know where to set it? Can u give us some suggestion for this?

The TPS65988DK configuration page is as follows:

The block diagram is as follows:

Thanks,

Kind Regards

  • 0
    TI__Mastermind 22470 points

    Hi Lumina,

    Thanks for reaching out on E2E.

    1. Can you reply with schematic and layout file , you can send me via email if some customer information is private.

    2. What value do you write to ISP-ISN limit register?

    Regards,

    Bryce

  • 0
    TI__Mastermind 22470 points

    Hi Lumina,

     

    We have not seen an update from you for three weeks, I close this thread now. If there is still something open, please reply and the thread will get opened again.

    If you have any other question or of the thread has been locked, please open a new one.

    Best regards,

    Bryce