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Original question:

TPS548C26: Questions of TPS548C26

TPS548C26: Loading Force Spec

Mike Yu
Intellectual 2390 points
Part Number: TPS548C26


Hi Team,

 

The customer is going to add to heatsink on device to cool it down.

To prevent damaging device, the loading force spec. is needed to  be considered for heatsink design.

Please help to provide the loading force spec for TPS548C26. Many thanks~

 

Best regards,

Mike

  • 0
    TI__Genius 11755 points

    Hey Mike, 

    TI recommends a force of up to 10 Newtons uniformly spread across the top of the package and perpendicular to the mounting surface. 

    Uneven distribution of force, or shearing force no perpendicular to the mounting surface of the package can alter the internal mechanical stresses on the silicon die and affect the electrical parameters or cause damage to the mechanical or electrical connections of the device.

    Thank you,
    Caleb

  • 0 in reply to Caleb Perez
    TI__Intellectual 2390 points

    Hi Cable,

    After checking with customer, the 10N limitation is far lower than other supplier’s MOSFET spec, could you please kindly revisit the force again. Thank you.

    Best regards,

    Mike

  • +1 in reply to Mike Yu
    TI__Genius 11755 points

    Hey Mike,

    We don't have any other data regarding loading force on the part. 10N is the most we recommend. Any other long term force may cause the silicon to bend which would result in changing part performance/limits. The customer should validate loading force on their board.

    Thanks,
    Caleb

  • 0 in reply to Caleb Perez
    TI__Intellectual 2390 points

    Hi Caleb,

    Get it, thanks for helping on this.

    Best regards,

    Mike