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TLIN2024A-Q1: question about external diode and resistor in LIN pin

Jay wang
Intellectual 2371 points
Part Number: TLIN2024A-Q1

Tool/software:

hi expert

as we know, TLIN2024 has four LIN. if all four LIN is Commander Node. whether can i only use ONE diode and ONE resistor in LIN1/2/3/4 PIN . and the reason is ?

  • 0
    TI__Mastermind 33765 points

    Hi Jay,

    Unfortunately, It is typically not recommended to share the same diode and resistor for commander mode across multiple LINs as it can lead to unpredictable behavior and potential damage to the circuit due to potential current imbalances if multiple LINs are actively trying to use the commander mode. Hence, we further recommend as shown in the data sheet.

    If no concerns for uneven current draw, you can share a diode and resistor by further ensuring the current draws evenly - using current limiting components like adding resistors on each LIN branch to limit the current flow based on the resistance value, thanks.

    Best Regards,

    Michael.

  • 0 in reply to Michael Ikwuyum
    TI__Intellectual 2371 points

    hi Michael

    thanks for your quick reply. did you hear that whether other designers try to this arch?

  • 0 in reply to Jay wang
    TI__Mastermind 33765 points

    Hi Jay,

    No, I did not hear. Could you help clarify the concern with using each LIN with its' own diode and resistor for commander mode? Thanks.

    Best Regards,

    Michael.