MOSFET Gate Drive

Discussion in 'General Electronics Chat' started by ammar shamsi, May 30, 2013.

  1. ammar shamsi

    Thread Starter New Member

    Jun 6, 2010
    Please Suggest,
    I am designing a solar charge controller , I want to make common
    ground of solar panel & battery and switching(Disconnect on full charge or PWM to control current) h-side i.e positive
    terminal of the solar Panel by using a MOSFET,
    The problem I m facing is that the I don't have sufficient Gate voltage to properly tun On the MOSFET becouse the Mosfet source is +Vbat i.e 12V above the ground.
    I have found there are some driver ICs based on charge pump.
    if charge pump is good solution for the same,please provide me some info on charge pump ckts.
    Please provide economical and reliable solutions.
    Thanks a lot
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    Use a P-channel mosfet then, so the source is at the solar side and the drain is on the battery side, then you can pull the gate to ground. circuit
    ammar shamsi likes this.