I have been curious about the driver options for this chip as well. There are obviously very few choices right now as far as meanwell goes, but I have notice this tiwce now with suggested drivers. The first example is running 2 058's off an HLG-240-C2100, whic could run them up to 125w each which is supposed to be still in the 160lpw range if I remember correctly. Would be nice, but the voltage turned all the way up is 119vDC which is 3.5vdc over the max voltahge for 2 of these chips, at 56v max a piece. The second example
@nevergoodenuf listed where you use 4 on the HLG-320H-C1400, again, turned all the way up, the wattage is fine, but again we are going over the max listed voltage of 56v. only by 1.15v in this case, but still, I would be worried to run it at full power, and I would imagine wiring in a small resistor to your potentiometer circuit would need to be standard practice to prevent going over voltage with these drivers, but that would also limit your wattage, also making the HLG-240-C2100A especially, but also HLG-320H-C1400A not an option for people trying to keep it simple, and skip the soldering, extra circuits, parts, and now resistors.
@Airwalker16 are you absolutely sure the HLG-320H-C1400 spits out 350w? it is rated at 320.6w according to the meanwell datasheet. I know the model numbers dont match the wattage, the HLG120HC1400s is rated at 151.2w, and is actually a decent option for 2 058's at ~75w a piece. no over voltage, as the max is 108, which is perfect. 185's is listed 200w, and 240's 250w, but I have also heard that some meanwells put out more than they are rated for, by a significant amount sometimes. I have heard of an extra 20w on the output side, and as much as 53w on the input using a kill a watt, and we would expect extra draw on the input as these drivers are "only" 94-95.5% efficient, but having said that, an extra 53w at the input of a 240 running at 94% means it is definitely pushing more than 250w.
I like the HLG-600H-54 for these chips. It is the only driver I know of that would really give you a full set of options for how hard to drive these monster cob's, as you could run anywhere from 2 058's at 300w a piece, all the way up to 12, at 50w a piece, or more if one were so inclined, and anywhere in between. Plus you can always add or remove a cob or 2 to either improve efficiency, or run em harder. the only downside is running them in parallel, but with a chip that can handle 364w that is hardly a concern if you are running 3 or more cobs on this driver. If you were crazy enough to run them that hard and had either water cooling, or a fucking massive heatsink setup, you could still have one go out, and the other 2 would be fine at 300. but if you are running 5 or 6, or more, which would be a little more realistic, you could have half your cob's go out all at once, and still be within range. The heat may be an issue, but its entirely unlikely that anyone's going to loose half their cobs, before noticing, on an assembled working fixuture anyways. there is plenty of room for people to blow out lots, or all their cob's in the building process, But that goes for any diy'er building any sort of cob fixture.