The PKM4516HD from Flex Power Modules is a DC to DC Converter with Input Voltage 36 to 75 V, Output Voltage 1 25 to 55 V, Output Current 1 1 A, Output Power 500000 mW, Isolation Voltage 750 to 2250 Vdc. Tags: Through Hole, Buck-Boost. More details for PKM4516HD can be seen below.