Help choosing a MOSFET

Discussion in 'Embedded Systems and Microcontrollers' started by hawk258, May 26, 2014.

  1. hawk258

    Thread Starter New Member

    Jan 18, 2014
    1
    0
    Hi Guys,

    Stuck on a system I am building!

    Well I am learning for myself how to design and build electronic systems, just with the help of internet and a couple of books...
    My problem is I have been simulating with matlab a buck converter with a variable output voltage and a constant input voltage, Matlab results have been good and I decided to build the system in real life, I have bought a PIC18F4550 but I do not know which MOSFET I should use because I do not really know the criteria I should follow to choose one or which are the best characteristics between different MOSFETs
    So basically please if you guys can help me to choose one I would really appreciate it because I am really stucked!

    If you think I am doing something wrong or have an idea who can help me with my system you are very welcome to say it, I'm just a fresher in the electronic world! :)

    Sorry for the english but I do not usually speak this language....

    thank you all
     
  2. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    5,435
    1,305
    You have not provided all the important information we need to help choose a FET.

    We need to know the input voltage, the range of output voltages, and the range of output currents you require.
     
  3. Anirban Raha

    Member

    Dec 4, 2013
    70
    0
    Hi,
    If you know the ratings(as suggested by @THE RB), you can just google "MOSFET" along with the required maximum voltage and current ratings in order to find a suitable MOSFET :D. You may also require a MOSFET driver.
     
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