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
    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
    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


    Dec 4, 2013
    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.