Hi guys.
I know that to drive a high side MOSFET to switch on, you need to apply a voltage that is about 10-15V higher than the voltage connected to its drain. What I do not understand is how this voltage is generated via a bootstrap capacitor? The only thing I can think of is some kind of back EMF from an inductor, just like a boost converter circuit works. But I am rather confused. Any help is appreciated.
Dan
I know that to drive a high side MOSFET to switch on, you need to apply a voltage that is about 10-15V higher than the voltage connected to its drain. What I do not understand is how this voltage is generated via a bootstrap capacitor? The only thing I can think of is some kind of back EMF from an inductor, just like a boost converter circuit works. But I am rather confused. Any help is appreciated.
Dan