Recom is aiming at rail rolling stock with a 25 x 25mm (actually 1 x 1inch) dc-dc converter that can deliver 12W. Called RP12-AR, the modules operate at up to 90% efficiency and up to +88°C ambient at full load – so no derating, and neither forced cooling nor additional heatsinks are required when operating ...
This story continues at 1in square dc-dc delivers 12W for rolling stock, and forklifts
Or just read more coverage at Electronics Weekly