Hi everybody,
I am working in a proyect and i'm having difficulties with a part of it.
Long story short, i have to make a pulse generator of 0 to -100V with a variable duty cicle
The idea is to control a mosfet (like a switch) with a microcontroller to generate the pulse.
My issue is that i need a rise time of 25ns for the pulse, so i need the mosfet to switch very fast. I use a totem pole configuration to "speed" my mosfet (in other words, to reduce the turn-off time )
This is the circuit that i am using:
I am simulating in LTspice and the problem is that i dont have a reduction of the turn-off time with the totem pole and i cant see where the problem is.
Thanks in advance
I am working in a proyect and i'm having difficulties with a part of it.
Long story short, i have to make a pulse generator of 0 to -100V with a variable duty cicle
The idea is to control a mosfet (like a switch) with a microcontroller to generate the pulse.
My issue is that i need a rise time of 25ns for the pulse, so i need the mosfet to switch very fast. I use a totem pole configuration to "speed" my mosfet (in other words, to reduce the turn-off time )
This is the circuit that i am using:
I am simulating in LTspice and the problem is that i dont have a reduction of the turn-off time with the totem pole and i cant see where the problem is.
Thanks in advance