Up for consideration, 

N2PowerTM leads the power density race with its high-efficiency XL375 Series AC-DC power supplies. Our advanced technology yields a very small footprint reduces wasted power and offers the highest power density in its class. This efficient design means reduced energy costs, a greater return on your investment, greater reliability and longer product life.

https://www.qualstar.com/n2p-datasheets/XL375_AC-DC_datasheet.pdf