Hi,
I have designed a 91% efficiency Boost regulator based on UC3843, it would convert from 12V to 60V.
The circuit
The simulated output
Now for some reason I want to over drive the boost input over the 60V, say to 340V, I wanted the design to be able to survive and work
so the output should be around 340V in this case
The problem is that when I simulate it, it would generate some 650V overshoots, I need a way to clamp this overshoot.
I have changed the input voltage to 340V in here
We have a 650V overshoot, How should I clamp it?
Also I have built the above circuit and it works as expected with 12V input, I have not changed the Diode and MOSFET yet to be able to handle high voltages! so what part numbers for MOSFET and Diode do you suggest? I need them to be on the low cost side of things.
I have not tried to over drive the input yet, for now I wanted to make my calculations solid and then over drive it in real world.