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TLIN1021A-Q1: When we tested LIN1021A-Q1, we found that there would be an error frame

Bao Songhao
Intellectual 840 points
Part Number: TLIN1021A-Q1

Tool/software:

Could you please help us check? When we tested LIN1021A-Q1, we found that there would be an error frame when undervoltage was started, do you have any suggestions？

Figure 1 is the schematic design;

Figure 2 shows the waveform when the undervoltage is started.

Figure 3 shows the normal startup waveform

  • +1
    TI__Mastermind 27690 points

    Hi Songhao,

    We recommend LIN pulled up to VSUP but not INH. As LIN is internally pulled up to VSUP in normal mode, it is not expected to maintain normal communication in a undervoltage condition.

    What was the VSUP value when that error occurred? Can you include the capture of VSUP on the same plot?

    Regards,

    Sean