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current sensing solution

TS Yang
Genius 4800 points

Hi,

One of my customer is planning the new IoT terminal business.

They are in the process of measuring the leakage current of the distribution board and reporting the status through LoRa Wan.

It is required to measure up to AC 250V / 60Hz, AC 20mA because it is for measuring leakage current of distribution panel.

Does TI have a Sensor Solution for this application?

They intend to make a rough implementation of Block (the block below is also found on the Internet).

RF Phy will be implemented as LoRa, Relay Function is optional.

Please review and recommend a suitable current sensing soluton, if possible.

thanks,

TS

  • 0
    TI__Genius 14825 points
    TS,

    Our high side current shunt monitors (typical of what you have shown here) don't have the 250V high side limit that you are looking for, but we do have several isolated solution possibilities involving either galvanic isolated devices and also fluxgate devices. If you can perform your application with low-side (no voltage measurement) then our standard solutions are possible. Do you plan to measure current with the common mode voltage swinging from -250V to 250V?
  • 0 in reply to Jason Bridgmon
    Genius 4800 points
    Hi Jason,

    thanks for your quick reply.
    Customer said that whether voltage or current should be sensed will be announced in future (after 9/20).

    BR,
    TS