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TCAN1057A-Q1: some questions about TCAN1057

Jiawei Hu1
Expert 5555 points
Part Number: TCAN1057A-Q1

Hi Team,

Then we found that whenever CAN_TX has data, the waveform of CAN+/CAN- will suddenly "shift" as a whole and then slowly return to normal
So when there is a lot of data, it seems that CAN+/CAN- signals suddenly appear, similar to the red area in the following figure:

Jiawei

  • 0
    TI__Guru 74252 points

    Jiawei,

    Can you share a schematic? It looks like your device isn't powered but something else on the CAN bus is communicating, then when you power up the TCAN1057A-Q1, the CANH and CANL pins properly bias and the CAN bus rises to 2.5V. Is that what is happening here?

    Regards,

    Eric Hackett