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Power Sharing using LT8637s

Category: Hardware
Product Number: LT8637

Hi There, 

I am wanting to combine 3 different 28V supplies into one 22V supply, sharing current between all of the upstream supplies. 

The LT8637 looks good in that it supports sharing between two modules, but I have three followup questions:

  1. Does this work if the input supplies are not common?
  2. Can this be extended to 3 converters in parallel?
  3. To facilitate #2, would it be acceptible to phase the clocks differently using delay lines (or some other way) between the converters to achieve balanced phase differences, not just 180deg.

Thanks,

David