I have some questions relating to bootstrapping. If my max voltage on drain would be 300V, then the Vb would be 300V + VCC. So if I have thought right, I need a diode that can hold over 300V.
The voltage over the capacitor will alway be Vcc? because when Vs increase, Vb will increase proportional with Vs. So I just need a capacitors that withstand Vcc
I have understand that 0.1uF is normal, but is this small enough for 50k Hz switching?
How do I decide the resistor as well?
Thanks for answers