I have a design that does not have a PF requirement, but I am considering using active PFC to lower harmonics thus EMI filter requirements. There is also the benefit of making the second stage (an isolated DC/DC converter) an easier design by providing a regulated input. I think there is also the benefit to lower current inrush.
Active or Passive PFC for front end?
Is this too much complexity versus simply using a bridge rectifier capacitor to make the DC voltage and design the EMI filter and isolated DC/DC converter appropriately? The bulk capacitors will have to be derated for a higher voltage - which adds to the cost and complexity (I can not use aluminum electrolytic capacitors).
Have I summed up the trade-offs? Any suggestions or comments?