Hi,
you need to provide useful informations:
* you say "power driver" ... I don´t know what you mean with this. (most probably this is the reason why your search does not give useful results)
--> use common phrases. From the "LTM4605" I guess you want to build an SMPS. A DC/DC converter. Buck? boost? or buck-boost? Isolated or not?
* you need to provide useful values. If your device has 400W output .... then where does this power come from? I don´t expect a fuel engine. But what is it? A battery? Which type and voltage range? Any other DC supply? Or an AC supply? Mains? Which voltage?
You refer to an Linear Technology / Analog Devices part.
Why don´t you visit their internet site:
https://www.analog.com/en/products/power-management/switching-regulators.htm
and input the values:
View attachment 170076
other SMPS IC manufacturers have interactive selection tools, too.
Klaus