# Driving MOSFETs with Bootstrap connections

I'm designing a type of a buck converter which has the following circuitry.

Simulation runs fine on PLECS and I've added three bootstrap connections to drive these high-side MOSFETs (All top three except FETD2). Simulation results to capture voltages across those capacitors is as follows;

I have following questions to clarify before I build this circuit on a PCB.

1. Is the voltage between each gate to source is enough to drive each MOSFET (Probably a Logic type MOSFET)?
2. In simulation, when I use the same 12V source to bootstrap circuit, it throws an error "Cyclic behavior during switching". But when I use a separate source as in the schematic, it works fine. Can't I really use the same source for all bootstrap connections?

3. Also the PWM frequency needs to be at 1 MHz. Has anyone used a driver circuit which can work at such high frequencies and got good results?