Unusual, but not unheard of. Hm, not bad switching speed for that voltage, nice.
The big problem is finding something as compact, or SMT, or whatever other features you want to keep; I would have to guess they needed a compact outline, and perhaps you still need it as small. You aren't going to replace that with D2PAKs, for example. Though there may be some special D2PAKs (Kelvin leads, adequate spacing to drain/collector) say with SiC inside, that do that; or, D3PAKs go that high in voltage, but definitely won't fit in the same footprint.
If this is for something like a motor switching application, where speed isn't a big deal, there are integrated modules, even with gate drivers included; I don't recall offhand if they come this high in voltage, but it may be worth a look.
IXYS has been around quite a while, though they did get borged in 2018 yeah; they have a penchant for unusual and niche parts (or, did), of which this is surely one of them.
Gate drivers, are probably going to have to be fully isolated; I'm not aware of any HVIC bootstrap style parts that go over 1200V (though maybe that's changed now that 1700V SiC are common on the commercial market).
I suppose the medium-voltage input is also not negotiable, but if that can be pushed back on, there might be a lot of savings -- not just in component selection, but insulation, safety and transient immunity requirements as well.
Tim
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