I want to clarify this question with my real-world example:
Say you have a device which contains some AC-DC converter (or DC-DC) for rather high power specs (10 kW up to 300 kW, not in the same device tho, just to curb the question parameters) and due to some external constraint know that the device will never need to be as-small-as-possible in two of the three dimensions. Smallest envisioned dimension is ~50x50 cm but can be as large as 1m x 2m, acceptable height is I think determined by the necessary active cooling technology, in the 10kW case this shouldn't surpass 10-20cm though. With one word, the device may be large but as flat as possible.
Is there some (any) advantage in sticking to old semiconductor technologies which dropped out of present day electronics due to their inability to miniaturize or other parameters along that line? I am thinking of thyristors (if this is a correct example - I am just a Software guy) which were all over the place in the 60's. Are there past technologies which lend themselves to AC-DC or DC-DC switching with benefits in
- minimzation of losses
- ease of cooling
which are large enough to consider them against present day technologies if above described size is of secondary concern?
Similarly, is there a price/power advantage if one builds the necessary modern semiconductors along these constraints - i.e. their housing may extend more in 2D than usually required? Is there something to be won?