Hi,
We are trying to find a verison of NCP5181 which has dV/dt of 100V/ns or more.
But you cant search this term on Digikey etc.
Also, even the manufac sites dont list it for search discrimination.
How do you find them?
Just spent the afternoon clicking through digikey and mouser but all were only 50V/ns.
.......thats actually better than a higher V/ns rating....but was not a searchable term on any search_engine...not even the infineons own search engine.
25-50V/ns is what "general" gate driver chips are limited to. Anything higher is probably going to be new technology and processes, and higher cost. Not sure you'll find anything if $3 USD is too expensive (in small quantities, anyways).
I don't completely understand your selection criterion. You are asking about bootstrap drivers but mostly listing isolated drivers.
Why not use standard single channel isolated drivers with 100 V/ns capability (e.g. STGAP2, UCC53x0) and combine it with bootstrap supply? Problem is however, if you actually expect 100 V/ns you probably get also undershoot of switching node that threatens your bootstrap circuit.