rushin25
Newbie level 2
I am calculating required gate current to turn on my MOSFET-BUK9M42-60E.
I am driving this MOSFET directly from microcontroller. It is logic level MOSFET.
I have these data from datasheet of MOSFET.
Vgs(th)=2.1V(max)
Vgs(supply from microcontroller)= 5v
Vds(battery voltage)=15v
Qg(total)=8.3 nC
Load details:
Switching frequency of load=1000Hz
Operating duty cycle of load=0 to 100%(consider 2% duty cycle for worse case analysis)
Can anyone help me to calculate gate current with these data?
I am confused whether to take Vgs(th) or Vgs(supply from microcontroller) to choose Qg. Because Qg depends on gate-source voltage.
I am driving this MOSFET directly from microcontroller. It is logic level MOSFET.
I have these data from datasheet of MOSFET.
Vgs(th)=2.1V(max)
Vgs(supply from microcontroller)= 5v
Vds(battery voltage)=15v
Qg(total)=8.3 nC
Load details:
Switching frequency of load=1000Hz
Operating duty cycle of load=0 to 100%(consider 2% duty cycle for worse case analysis)
Can anyone help me to calculate gate current with these data?
I am confused whether to take Vgs(th) or Vgs(supply from microcontroller) to choose Qg. Because Qg depends on gate-source voltage.