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SN65HVD231Q reference schematic?

Other Parts Discussed in Thread: SN65HVD231Q, SN65HVD255

Dear TI Engineer,

Can I get SN65HVD231Q EVM documents? or its reference schematic?

Because I've found only the Datasheet on TI website!

Otherwise, Could you review this schematic?

It's for BMS CAN block.

especially I'd like to get the schematic review of the R/C time constant matching  values and Filter Network circuit?

Best regards,

eric

  • Hi Eric,

    The SN65HVD231Q does not have an EVM made specifically for it, but we do have an EVM for the SN65HVD255 device which is fairly generic and would work for evaluating this device as well.

    http://www.ti.com/tool/SN65HVD255DEVM?keyMatch=hvd255&tisearch=Search-EN

    The schematic and documentation can all be found on the link above.

    In terms of schematic review I have a couple comments/questions,

    • Why are you terminating this node with both 1.3kΩ resistors and 60Ω resistors? I would recommend only doing the two 60Ω resistors with 4.7nF to GND.
    • I have no experience with the PESD0603-240 components that you have selected, I typically recommend the NUP2105 or 2 MMBZ27 devices from On-Semi for protection components. I have extensively tested these devices and there clamping voltage works very well with our devices.
    • Typically protection components are only placed from the bus lines to GND and not between bus lines.

    Thanks,

    John