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Original question:

CCS/AFE031: AFE031

AFE031: AFE031

Gary Scrimnger
Prodigy 20 points
Part Number: AFE031

Hi guys.

For PLC (AFE031) comms if there is no AC power on the cable but on both ends I have battery power available (but not connected) will the PLC comms still work with no AC?

Thanks

  • 0
    TI__Guru 53461 points

    Hi Gary,

    When AFE031 is Tx, its power amplifier is generated Transmission modulation + DC output bias at the output terminal of the PLC controller. To transmit over the AC powerline, the Tx's output component is blocked by capacitor, and modulated transmission signal is coupled to the AC powerline via a transformer (likely options for AC powerline). Depending on the PLC configuration, the modulated transmission signal should have voltage swings up to 15Vp-p or may be slightly more (single supply rail of AFE031 can be configured up to 24Vdc). 

    Without AC power presented over the powerline, the modulated AC signal should still be transmitted over the copper line. 

    I am not clear about your following statement: "but on both ends I have battery power available (but not connected)". Do you mean that you have battery power, where AC is used for charging batteries. Please clarify your questions or draw us a block diagram. 

    Best,

    Raymond

  • 0 in reply to Raymond Zhang1
    Prodigy 20 points

    Hi Raymond,

    "I am not clear about your following statement: "but on both ends I have battery power available (but not connected)". Do you mean that you have battery power, where AC is used for charging batteries. Please clarify your questions or draw us a block diagram."

    Yes that's exactly what I mean...Two separate battery powered DC systems is available to power the electronics - even when the AC power fails(on the cable), but we must still have comms when the AC has failed.

    But you answered the question and it is great news that one can communicate on a "dead AC" cable.

    In fact it opens so many opportunities of communications for PLC ...exciting!.  

    Thanks for the confirmation.