P-channel MOSFET uses hole flow as carrier, and its mobility is smaller
than that of electron flow in N-channel MOSFET. In terms of function,
the main difference between the two is that a P-channel MOSFETs requires
a negative voltage (VGS) from the gate to the source to operate, while
an N-channel MOSFETs requires a positive VGS voltage. This makes
P-channel MOSFETs ideal for high-side switches. The simple device design
facilitates low-voltage drive applications and non-isolated POL
products in limited Spaces. One of the advantages of the P-channel
MOSFET characteristics is the simplification of the gate drive
technology, which generally reduces the overall cost.