As the negative gate voltage on the p-type silicon ... virtually no standing gate current after an initial surge. A MOSFET power switch can thus be built requiring much less in the way of drive ...

This circuit is called a high-side switch – it enables you ... exceeding Vgs; in P-FET datasheets, Vgs is shown as a negative number, say, “-1.7 V”. As you might have noticed, it’s easiest ...