I am using an N-channel MOSFET (500V, 100A, 0.055Ω) for a project where I wish to use the transistor to switch on a circuit containing a fully charged capacitor 330V, 80uF, therefore allowing it to discharge. I wanted to supply an analog voltage pulse to the transistor to that it can fully/partially switch the circuit depending on the pulse. The pulse lengths will be ~0.5ms and will varying in voltage within this pulse.
My initial question is, will the MOSFET produce alot of heat when partially switched on even for the full 0.5ms? and will this heat energy come from the 330V capacitor supply on the drain and source pins, or the voltage pulse to the gate pin? As the focus of this project is energy efficiency from the capacitor.
If this does create a significant heat energy losses from the capacitor, would it be better to can a series of short, sharp digital signals to a MOSFET IC Driver which can rapidly turn the MOSFET on and off to almost mimic the partially on sections of the pulse?
Any help on this would be greatly appreciated. Thanks
My initial question is, will the MOSFET produce alot of heat when partially switched on even for the full 0.5ms? and will this heat energy come from the 330V capacitor supply on the drain and source pins, or the voltage pulse to the gate pin? As the focus of this project is energy efficiency from the capacitor.
If this does create a significant heat energy losses from the capacitor, would it be better to can a series of short, sharp digital signals to a MOSFET IC Driver which can rapidly turn the MOSFET on and off to almost mimic the partially on sections of the pulse?
Any help on this would be greatly appreciated. Thanks