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Need to send 5v DC power from the power mains to Arduino as well as wireless counter transmitter

Nate Pulkar
Prodigy 200 points
Other Parts Discussed in Thread: TIDA-00488, UCC28710

I need to power the Arduino which is connected with wireless counter transmitter device which is connected 20 meters far from the power mains board, I need to know any best way which will help me to send 5v power converted from 220v AC to 5v DC to Arduino board?

Any advice on this will be great help.

  • 0
    TI__Genius 17100 points
    Hi Nate! Thank you for your post.

    I understand you are trying to transmit power wirelessly to an arduino microcontroller over a distance of 20m; specifically, 5V DC over this distance. Can you share a schematic or diagram of your design? TI offers short range power transmitter controllers for applications like wireless charging. Could this work for your application?


    Best,
    Manuel Chavez
  • 0 in reply to Manuel Chavez
    TI__Genius 9148 points

    Hi Nate,

    Thanks - I had a couple more questions:

    1. What is the minimum voltage required at the Arduino board? Is it 5.00V?

    2. If so, do you have the flexibility to increase the 220VAC=>5VDC converter output to around 6 or 7VDC? I'm concerned about maintaining a minimum 5.00V at the Arduino board due to IR drop of the 20m cable?

    -Jim

  • 0 in reply to Jim Carrillo
    Prodigy 200 points
    Minimum voltage I required to give to arduino is 5v but using voltage divider I can make the output work as per my requirement? Can you suggest me some sample circuit to test this kind of solution ?
  • 0 in reply to Manuel Chavez
    Prodigy 200 points

    I guess wireless power transmitter is not going to help me out here, I have regulated power supply in which power is converted from 220v AC to 5v DC but I am bit more concern about traveling 5v dc to the 20-meter distance where the wireless sensor is available. I just want to give the external power to my wireless sensor on which sensor will work whenever power is available and if not then it will use the 2 AA batteries available in the sensor

  • 0 in reply to Nate Pulkar
    Prodigy 5 points

    Hello Nate,

    I don’t know why you would go thru the trouble of wireless power.
    There isn’t a way I know of to transmit power 20 meters.

    The wireless counter uses 2xAA batteries. 3V
                Up to 500,000 Transmissions from 2 AA Batteries

    You could complement the batteries with a solar panel.

    TIDA-00488 TI Design demonstrates an ultra-low power and a renewable method of wireless environmental sensing using daylight energy harvesting with an extremely long backup battery life. This design uses Texas Instruments’ ultra-low power harvester power management; SimpleLink&trade (...)

     

    The ardunio board would need a wall wart type of supply.
    There are many High Voltage Controllers that could support a little isolated supply.

                http://www.ti.com/tool/PMP4344

                This reference design demostrates a low cost single PCB solution for 5V1.2A cube charger.
                By using primary side regulation (PSR) mode chip UCC28710 , < 10-mW No-Load power is achieved.
                The overall size is limited in 22mm(L)X21mm(W)x20mm(H).