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Power Factor Control with DC input

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TheMG:

--- Quote from: treez on July 07, 2020, 08:34:06 pm ---With 360VDC output, it sounds as if its a bit low, because PFC output are usually at least 385VDC.
With the low efficiency, it could be worth scoping the gate drive to see if a proper gate drive voltage is there.
Mind you, old fashioned CCM PFCs were  inefficient due to reverse recovery losses in the old slower diodes.

--- End quote ---

That particular PS is dated 1999, certainly predates modern high-efficiency stuff.

360VDC seems to be correct, it only has 400V rated capacitors as opposed to the 450V rating you'd find in power supplies running a 380V PFC.

Anyways I don't particularly care about it. Just an old power supply from the junk stash, I picked it as a test victim simply because I don't care if I let the smoke out of it.

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