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TCAN4550-Q1: SCH Check

Neal Zhu
Expert 2470 points
Part Number: TCAN4550-Q1

Hi

Please help to check whether the SCH is OK?

TCAN4550RGYTQ1.pdf

Thanks!

  • 0
    TI__Guru 74252 points

    Neal,

    I'll have a response to you by tomorrow, thank you for your patience.

    Regards,

  • 0 in reply to Eric Hackett
    TI__Guru 74252 points

    Neal,

    • nINT, RST, and GPO2 need external pull-up resistors to VCC_3V3 if the MCU pins that they're connected to don't have internal pull-ups
    • When using a an external clock for the OSC1 input, OSC2 must be grounded.
    • All of the supply inputs look good in terms of decoupling and bulk capacitance.
    • FLTR has the correct capacitance on it.
    • The bus components have the minimum of what is required. If any noise or transients are expected on the CAN bus for this application I would recommend a common-mode choke (ACT45B series from TDK), ESD protection diodes (PESD1CAN), and filter capacitance (recommended 20-150pF on CANH and CANL). These are no required but help with signal integrity and protecting the CAN bus pins

    Please let me know if you have any questions.

    Regards,