• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 14 subscribers
  • Views 428 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.

Original question:

ISO7762DWEVM: Single Layer?

ISO7762DWEVM: Mounting

Alexander Fitzgerald
Prodigy 40 points

Part Number: ISO7762DWEVM

Tool/software:

Hello,

I need to attach the ISO7762DWEVM board to a mount. I'm looking into adding through holes for fasteners. Are the three circular fiducial markers viable locations to machine through holes? Do you have any other location suggestions or keep out zones to keep in mind?

 

  • 0
    Prodigy 40 points

    Also what adhesive is used to attach the hemisphere feet on the back of the ISO7762DWEVM?

  • +1
    TI__Mastermind 20745 points

    Hi Alexander, 

    This is a very interesting request (I don't think I have gotten that questions before).

    The main consideration here would the ground planes on the PCB. side 1 have the GND1 ground plane while side 2 has the GND2 ground plane (see EVM user guide for schematic). The size of hole, fastener material, and what you are fastening to would also be a consideration for this as well. 

    If you plan on fastening the EVM to an enclosure or metal plate of sort, drilling the fiducial marks and exposing ground planes can potentially short both grounds (GND1 and GND2) together, effectively bypassing the isolation barrier. Can you please confirm the size of hole, fastener material, and what you are fastening to?

    Regards,
    Aaditya V

  • 0 in reply to Aaditya V.
    Prodigy 40 points

    Hey Aaditya, thank you. We decided to try a different mounting solution. What adhesive is used to attach the hemisphere feet on the back of the ISO7762DWEVM?

  • +1 in reply to Alexander Fitzgerald
    TI__Guru 55965 points

    Hi Alexander,

    Thank you for confirming that you have decided to use a different mounting solution.
    Regarding your question on adhesive used to attach the bumpons, the bumpons come with adhesive. The paper, holding it, is peeled off to expose the adhesive and then attached to the PCB. The part number of bumpon is SJ-5303 (CLEAR). I am attaching below an image for your reference. Thanks.


    Regards,
    Koteshwar Rao