For manual switching, you don't need to consider switching losses unless you do something stupid like putting a capacitor on the gate to slow it down.
I realy don't understand how delaying the transaction from going On to OFF can damage the mosfet?
All I want is to put a small little capacitor in parallel with the mechanical switch to prevent any sudden disconnections from shutting the system down...
Thanks quite helpful! Is it possible to Isolate the live side with that n channel mosfet?
Use a resistive/capacitive load on your switch to take out bounce and then a schmidt trigger to achieve a fast MOSFET switch time.... I take it a few mS delay is no problem?I'll knock up a circuit ( couple of BJT's etc) if interested.Allan
I'm looking for a way to drive a high voltage source voltage(50V) with the most reliable best possible way using this around 2 or more mosfets: IRF7530 in parallel and a simple switch that either shorts or opens the circuit to be used as an E switch.
Also how many mosfets of those kind should I put in parallel in order to drive those mosefets without active cooling or a heat sink assuming 32deg Celsius ambient and 50-55A continues current?
Pulse width 400μs; duty cycle 2%.
and for the third time I just want to connect a mechanical switch to close and open the circuit from the mosfet array and thats it, how hard is it to understand?
The IRFS7530 has a Junction to case max resistance of 0.40 degrees Celsius/per watt. Tcase 0.40 degrees Celsius/per watt x 5.4 W Tcase = 2.16 + Ambient