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TLV70728EVM-612: Via tenting and via diameter

Corey Chitwood
Prodigy 70 points
Part Number: TLV70728EVM-612

Is the via on the far side of the TLV70728 on the TLV70728EVM-612 a tented via, or an un-tented via?

The user guide calls out a 6-mil via under the TLV70728.  Is there any concern using a 7.9-mil (0.2mm) via under the regulator?

  • 0
    TI__Mastermind 32560 points

    Hi Corey,

    The via is un-tented.

    I imported the gerbers into Altium and modified the via for 7.9 mils. The via will still fit inside the pad but the hole size is slightly larger.  The biggest issue is solder flowing through the via and not making good contact with the thermal pad.  The fab house can guide you on whether this would be an issue.  My opinion is that 7.9 mils should be fine.

    6 mil via in the center pad:

    7.9 mil via in the center pad.  You can barely notice a difference.

    Thanks,

    - Stephen