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AFE031: Low Data Rate PLC Rec

Marco Rojas
Intellectual 1800 points
Part Number: AFE031
Other Parts Discussed in Thread: AFE030, THVD8000, AFE032,

Hi team,

I have a customer asking if we have any "chips for doing low data rate power line communications over 5 volts DC" that's one-way and in a smaller footprint. I saw this design guide/devkit from about a decade ago, but I was curious if there's something more recent I can share. Let me know what you think and if I should get back to the customer with any follow-up questions. Thanks!

Marco

  • 0
    TI__Guru 54161 points

    Hi Marco,

    Marco Rojas said:
    "chips for doing low data rate power line communications over 5 volts DC" that's one-way and in a smaller footprint.

    Could you define the smaller footprint in mm^2 in area or L x H x W in volume? 

    Per your inquiry, THVD8000 may be more suitable, because this is digital PLC communication solution. PRAMPS team does not support the product line, but RS486 may have the solution. AFE030/AFE031/AFE032 NB-PLC solution is not small footprint, if your application is for low voltage DC communication. 

    AFE030/AFE031/AFE032 NB-PLC can be modified for low DC voltage PLC solution, but I think that THVD8000 may suit your application better.  

    https://www.ti.com/lit/ds/symlink/thvd8000.pdf?ts=1710363297175&ref_url=https%253A%252F%252Fwww.google.com%252F

    If you have other questions, please let me know. 

    Best,

    Raymond

  • 0 in reply to Raymond Zhang1
    TI__Intellectual 1800 points

    Assigning this to INT-TRX for comment. Will report your feedback to the customer, thanks Raymond!

  • 0 in reply to Marco Rojas
    TI__Guru 68512 points

    Marco,

    THVD8000 is indeed created for communication over power lines, using RS485-type communication scheme. What kind of data rates are you using? I see you say over 5V, which is possible. I've assigned this to one of our experts for the THVD8000 to comment further.

    Regards,

    Eric Hackett 

  • 0 in reply to Eric Hackett
    TI__Intellectual 1800 points

    Feedback from customer:

    The THVD8000 looks like it would work well.  I think I am going to try and implement this first using discrete components and the microcontroller timer output to generate the carrier wave for OOK .  I think the THVD8000 will be overkill for us because the power line length will be less than half an inch long.  

    • Footprint Constraint (in mm^2 area or LxHxW volume):   4mm x 4mm would be about the largest we could go.
    • Price Target:    Ideally less than $1
    • Project Name:   Wireless coating thickness probe
    • Projected Annual Volume:  1k
    • Targeted Production Date  September to October 2024
  • 0 in reply to Marco Rojas
    TI__Guru 56710 points

    Hi Marco,

    This is our only solution for something like this in our TRX portfolio.

    Marco Rojas said:
    I think I am going to try and implement this first using discrete components and the microcontroller timer output to generate the carrier wave for OOK

    Let us know if the customer runs into any issues or has any additional questions about THVD8000.

    -Bobby