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TPS65988DJ: Schematic review

Shu-Cheng LIN
Guru 11785 points
Part Number: TPS65988DJ

Hi Sirs,

Sorry to bother you.

Could you help review our schematic as below?

Any suggestion are welcome.

  • 0
    TI__Genius 12700 points

    Hi Shu-Cheng,

    I will check your schematic design and get back to you tomorrow on my suggestions.

    Thank you,

    Hari

  • 0 in reply to Hari Patel1
    TI__Genius 12700 points

    Hi Shu-Cheng Lin,

    I have looked at the schematic and it looks fine for the most part. I do have some recommendations though.

    - I recommend reconfiguring the pins "BB0_LS_EN" and "USB_OC0#_PCH" from GPIO 12 and 13 to GPIO 16 and 17.

    - I also recommend pulling up the I2C2 pins to LDO_3V3 since they are being used.

    Thank you,

    Hari

  • 0 in reply to Hari Patel1
    Guru 11785 points

    Hi Sirs,

    Thanks for your reply.

    Update schematic as below. Please let me know if have any risk on our design.


    BB1_LS_EN" and "TC_RETIMER_FORCE_PWR" from GPIO 14 and 15 to GPIO 16 and 17
    I2C2 Pull High 2.2K to PDf 3V3

  • 0 in reply to Shu-Cheng LIN
    TI__Genius 12700 points

    Hi Shu-Cheng LIN,

    I edited my last comment just a few moments after I replied to say GPIO 12 and 13 instead of 14 and 15. So, I would recommend changing the GPIO pins 14 and 15 back to what they were previously and then reconfiguring GPIO 12 and 13 to GPIO 16 and 17.

    Additionally, I noticed that your other I2C1 and I2C3 pins are connected to +3VSUS. I would recommend pulling up ALL of the other I2C ports and pins to the same LDO_3V3 net as well, the way you did for I2C2.

    Other than those 2 changes, I think your schematic looks good.

    Thank you,

    Hari

  • 0 in reply to Hari Patel1
    Guru 11785 points

    Hi Sirs,

    Thanks for your reply.

    Actually this project has been mapped on last Fri, so  can the settings of these GPIOs be adjusted through the tool?

    Thanks!!

  • 0 in reply to Shu-Cheng LIN
    TI__Genius 12700 points

    Hi Shu-Cheng LIN,

    The GPIOs cannot be reconfigured through the GUI if that's what you are asking. You could test those GPIO pins from the design and see if it still functions as planned to be certain.

    Thank you,

    Hari