MOSFET - using two p type FQP27P06 to be two switches for 12~14V 10A.

Discussion in 'General Electronics Chat' started by FroceMaster, Feb 14, 2016.

  1. FroceMaster

    Thread Starter Member

    Jan 28, 2012
    400
    4
    Hi
    Will try to make this setup but will need to know if it will Work.

    To understand the schematic.
    Supply is there allways.
    When i put 12v on the "12-14v input 10mA max" wire both mosfet should get power out to "Out 12-14 V 10A Load" wire.
    When i just put 12v on the "12-14v input 10A max" wire, only the one mosfet should set power out to "Out 12-14V 10A Load" wire.

    Will it Work, or am i totaly wrong,
    Have attached both datasheet,
    mos.png
     
  2. Jony130

    AAC Fanatic!

    Feb 17, 2009
    3,962
    1,097
    It should work despite the fact that you are using wrong symbol for a P-MOS. Also you can increase R38 and R40 to 10KΩ.
    And do not forget about power dissipation in P-MOS. PD = Id^2*Rds(on) = 10A^2 * 0.07Ω = 7W so you need a big hest-sink or new PMOS with lower Rds(on).
     
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