The PKB4216HD from Flex Power Modules is a DC to DC Converter with Input Voltage 36 to 60 V, Output Voltage 1 40 to 55 V, Output Current 1 5 A, Output Power 250000 mW, Isolation Voltage 750 to 2250 Vdc. Tags: Through Hole, Buck-Boost. More details for PKB4216HD can be seen below.