We need to generate short current pulses of roughly 50A peak and 50ns duration. Repetition rate is less than 200Hz. The load is largely resistive and around an Ohm.
We plan on using a charged delay-line of 25ns electrical length and use a switch to discharge the line into the load. The voltage will be up to +200V on the delay-line before discharge. The switch is discharging to gnd.
Clearly we need a switch with short turn-on rise time. The fall time will be less critical as the pulse will die out once the line is discharged - provided we get the line matched to the load.
What would be a good candidate switch for this? MOSFET (N type) or transistor (NPN) or... ?. Performance is more important than cost.
Ok - I know this is a FET forum, but hope to get an unbiased answer anyway. I ask because the variety of power devices is a bit overwhelming and maybe there are some types which inherently are better than others.
Thanks
