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DRV8886: Full Scale Current over 2.0A

Kazuki Kitajima
Intellectual 1480 points
Part Number: DRV8886

Hello team!

I got the question from the customer below. Could you please support this?

In the customer system, IFS might exceed 2.0A. Is it okay to use this device with over 2.0A IFS if making sure temp is below 150℃?

My understanding for the recommended operating condition is that we can guarantee the DS spec under this condition.

However, once it exceeds the recommended condition we can't guarantee the DS spec.

So the answer might the device will work but the spec is not guaranteed? or no problem if checking temp is below 150℃?

Thank you for your support.

Best Regards,

Kazuki Kitajima

  • 0
    TI__Guru 56650 points

    Kitajima-san,

    Yes. The device will work but the spec is not guaranteed. Power dissipation and thermal limits must be observed.

    Since 150C may be higher than PCB maximum allowed temperature, the temperature limitation may be depended on the PCB material.

  • 0 in reply to Wang5577
    TI__Intellectual 1480 points

    Hi Wang-san,

    Thank you for your confirmation.

    I understood.

    Just curious question, if we ignore the recommend condition and use this device with over 2.0A condition.

    What's spec potentially we can't guarantee?

    If you don't want to post, please send the message directly.

    Best Regards,

    Kazuki Kitajima

  • 0 in reply to Kazuki Kitajima
    TI__Guru 56650 points

    Kitajima-san,

    The datasheet spec table gives the test conditions, for example: "at TA = -40 to 125°C, VVM = 8 to 37 V (unless otherwise noted)". If DRV8886 still operates under the spec condition, the spec is still OK.

    Power dissipation and thermal limits must be observed. If the IC temperature is over 125C, the spec number cannot be guaranteed.