Seniors:
Hello,
Recently, I received a case of input voltage 100V, output power 1000W (24V / 42A), efficiency not less than 95%, half brick size (61 * 57.9 * 12.7mm).
Is there any suitable circuit scheme recommended? I hope the circuit is simple, and analog control power is appropriate.
Thank you.
TI has two full bridge controllers which maybe of interest.
LM5045 which is designed for telecoms input voltage range but can work up to 100V and I have see it designed into 800W and 1.4Kw designs. 
The other part is the UCC28951 which is a phase shifted full bridge controller, 
I have attached a schematic for a design example for UCC28950 which is a pin to pin compatible predecessor of the UCC28951.PMP4584_Rev_A_SCH.pdf
Regards
Peter
