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 Active Member

    Jan 28, 2012
    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,
  2. Jony130

    AAC Fanatic!

    Feb 17, 2009
    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).