The PKU3515S from Flex Power Modules is a DC to DC Converter with Input Voltage 9 to 36 V, Output Voltage 1 13.5 to 16.5 V, Output Current 1 3.4 A, Output Power 50000 mW, Isolation Voltage 2250 Vdc. Tags: Through Hole, Buck-Boost. More details for PKU3515S can be seen below.