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It is possible to make a current monitor output to a Schmitt-trigger comparator feeding into J line of a JK flip-flop with the K line pulled up to positive supply and Q sent to a big FET or IGBT? That way it’ll trip much, much faster and will autoreset once the current is gone, but it may cause serious hunting behavior. How to mitigate the bang-bang?
Up to about 34V, but I felt that targeting 40V for margin would be suitable.
The reason for the auto-reset fuse is because I expect this unit to be subject to transient shoot-throughs and short-to-chassis. It needs to protect against those, but at the same time, it must not require a fuse replacement every time such an event happens. Those events happen because of vibration and EMI issues that must be tolerated.
It's not necessarily the system design. It's the environment that it's operating in.
It must not be a manual reset and I think reset in 1 second will work for known spike profiles.