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THVD8000: good for 60v solar panel strings monitoring?

Art Mecina
Genius 16655 points
Part Number: THVD8000
Other Parts Discussed in Thread: AFE031, , THS6222

Hello Guys,

Good day.

Is THVD8000 good for 60v solar panel strings monitoring? Customer is planning to use THVD8000 in place of AFE031 for each 60v DC solar panel/ strings monitoring. Is this okay?

Also, any suggestion on best and economical solution for Power supply and communication over two wires is greatly appreciated.

Thanks!

Art

  • 0
    TI__Mastermind 25705 points

    Art,

    From what I learned, the DC power of solar panel has low impedance. AFE031's driver is strong enough, while THVD8000 may not be. However the scheme would work if you put a line driver like THS6222 behind THVD8000. In stead of FSK of AFE031, the modulation is OOK.

    Regards,

    Hao 

  • 0 in reply to Hao L
    Prodigy 30 points

    Dear Hao,

    But you recommend THVD8000 for PV panels monitoring in another thread "60V Multi Node Bus Power Line Communication".

    Rgds,

    TVSingh

  • 0 in reply to TejVir Singh
    TI__Mastermind 25705 points

    TVSingh,

    Sorry for the confusion. There are two scenario for coupling data to power line here. 1) use series inductor on power to shield data signal (high frequency) from power (low frequency). THVD8000 design guide applies to this case, in which power's source impedance is high. 2) directly drive power line (low impedance). An extra line driver is needed in this case.

    Regards,