P Channel Mosfet Switch Circuit Diagram. In most of the cases n channel mosfets are preferred over p channel mosfets for several advantages. These would improve the thermal stability of the circuit.
Maybe it helps to understand the p channel mosfet better. Example of p channel jfet as a switch. In this configuration when the high side switch is realized with a p channel mosfet the driver design will be simplified enormously.
But here we dont have a common ground nor a common vcc with the 12v.
For example if youre trying to turn on a 5 volt relay with an arduino. One fault common to such circuits has been the excessive crossover current during switching that may occur if the gate drive allows both mosfets to be on simultaneously. An excellent use for p channel is in a circuit where your loads voltage is the same as your logics voltage levels. Diodes could be included with the biasing resistors.