Hallo,
I would like to use a Power N-fet in source follower configuration, intended to drive its gate with a VIN input voltage fixed at 12V and on drain a DC power supply that could be between 40V and 160V (DC).
By biasing the N-fet with a simple resistance to ground, I should get on its source the VIN-Vth.
My chosed N-fet it could be an Infineon OptiMOS3 at 200V (Vds).
But I'm not able to find a spice model functional on LTSpice.
My doubts and questions are related how to size the biasing resistance and if you see any drawback for this kind of configuration.
Thank you very much for your comments.
I would like to use a Power N-fet in source follower configuration, intended to drive its gate with a VIN input voltage fixed at 12V and on drain a DC power supply that could be between 40V and 160V (DC).
By biasing the N-fet with a simple resistance to ground, I should get on its source the VIN-Vth.
My chosed N-fet it could be an Infineon OptiMOS3 at 200V (Vds).
But I'm not able to find a spice model functional on LTSpice.
My doubts and questions are related how to size the biasing resistance and if you see any drawback for this kind of configuration.
Thank you very much for your comments.