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Trying to design PFC power supply using ADP1048, but LT8316 is not available. Please recommend a substitute for 500VIN step down

Category: Hardware
Product Number: ADP1048, LT8316

I'm trying to design a PFC power supply to output 24VDC with a peak power output of 100W. The ADP1048 appears to be a good choice for my requirements, but the only DCDC converter that I can find which tolerates a VIN above 400V is the LT8316, which is unavailable for purchase.

Is there another DCDC step down converter than can take a 400V input and output 24V that is likely to be in stock anywhere?

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