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ESD Protection for CAN Transceiver

Jared Becker
Genius 11945 points

Other Parts Discussed in Thread: SN65HVDA1040A-Q1, TPD2E007

Hi team,

I am looking for a recommendation for ESD protection for the CAN transceiver SN65HVDA1040A-Q1. The part already has a solid amount of ESD protection compliance, but I believe it should still have added ESD protection since it is used in automotive and based upon the following text in the datasheet.

Any recommendation would be greatly appreciated.

Thanks in advance!

Jared

  • 0
    TI__Genius 12190 points

    HI Jared,

    I looked at the data sheet and I see the signal can range between -12 V and 12 V (typical?) on the CAN bus. Another thing I see are the ABS_MAX voltage ratings 0f -150 V and 100 V "test pulses". How long is one of those test pulses? The same not says 40 V DC. This concerns me, the device I can recommend will de-rate those values to +/- 13.5 V DC ABS_MAX ratings.

    The only device I can recommend (with drawbacks) is TPD2E007DCK. It can handle the signal range (it has a working voltage of +/- 14 V). This is our only device that can handle the -12-V signal.

    Drawbacks:

    • We have not tested it against EFT
      • This is not really a concern, the device has the highest ESD (IEC 61000-4-2) Level 4 rating. For the devices we have tested with EFT this will get it 80A rating with the IEC 61000-4-4 EFT tests, the highest.
    • The device is not automotive qualified.

    Have a look at TPD2E007 and let me know what you think.

    Regards,

  • 0 in reply to Guy Yater
    TI__Genius 11945 points

    Hi Guy,

    This is great information. I am requesting some more details on the CAN transceiver to identify what kind of protection they will need. Thanks for your help.

    Jared