We have designed hardware circuit which validates voltage regulator maximum output current. So we designed op-amp circuitry to control gate drive of the Power MOSFET and it will work in active region and pass the regulator output current through MOSFET. Here the Mosfet is our Load.
Issue: In our design we are capturing the output current wave form it shows the overshoot and undershoot in it. I suspect MOSFET input capacitance causing this issue. We have RC circuit for compensation to this but I need to understand this issue clearly and what are the possibilities causing the issue. Kindly help me on this
Attached is our op-amp circuit schematic and MOSFET design.
Sorry for delaying to upload the output wave form where I can see overshoot, undershoot in it (circled in yellow)