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THVD8000: Request for help in selecting Power Line Communication for LED light load

Krunal Zala
Prodigy 120 points
Part Number: THVD8000
Other Parts Discussed in Thread: THS6222, OPA521

Hello,

I am considering PLC for controlling LED lights powered using 220V AC/50Hz.

There are 40 LED lights connected in parallel and driving from 220V AC. The longest distance between between two LED light could be 50 meters.

And I want to control each of LED lights independently using THVD8000 and therefore I have following queries:

  1. Do you see THVD8000 is suitable for this application?
  2. Will THVD8000 work okay with non-twisted cable as LED light will be powered using flexible cable?
  3. Will THVD8000 work okay with 40 LED lights connected in parallel and not in a daisy chain?

Thank you for your attention.

Regards,

Krunal

  • 0
    TI__Mastermind 25705 points

    Krunal,

    The challenge of using THVD8000 in the 220VAC application is to couple communication signal to the power line, which is low impedance and usually not practical to add series inductors. The solution could be applying high speed amplifiers (for example THS6222 or OPA521) after the THVD8000 to drive the power line. By doing this, the THVD8000 is only in charge of the modulation, while the amplifier can drive low impedance (1Ohm to 5Ohm). With this setup, the system can work with non-twisted cable and in other network topologies other than daisy chain. 

    Please let me know if you have any further questions.  

  • 0 in reply to Hao L
    Prodigy 120 points

    Thank you for a quick guidance.

    Is there a document such as reference design, application note showing the approach you mentioned for using THVD8000 in the application I mentioned?

  • 0 in reply to Krunal Zala
    TI__Mastermind 25705 points

    Krunal,

    Please send me an email to hliu@ti.com. I will share with you some preliminary data.