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Thread: Driving Mosfet using PWM from arduino so as to achieve Linear region of operation

  1. #1
    New Member New Member RanjithShetty90 is on a distinguished road
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    May 2020

    Driving Mosfet using PWM from arduino so as to achieve Linear region of operation

    Dear All,

    I require some help regarding designing a driver for driving an LED fixture of 72 V DC rating and 300 mA

    Is it possible to drive the Mosfet so that upon varying PWM signal from arduino the mosfet Dims and brightens the fixture accordingly.

    Any help regarding this will be highly appreciated.

    Note:I am using IRF540 MOSFET as of now but the transition is not linear but abruptly switches on after particular voltage given to Gate of MOSFET.

    Is there any other MOSFET that can help me in this case.

    Thanking You

    Ranjith Shetty

  2. #2
    New Member New Member Garbuli is on a distinguished road
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    Mar 2019
    Hi Ranjith
    Are tou triggering the mosfet with 5 Vdc?

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