The PKU3513S from Flex Power Modules is a DC to DC Converter with Input Voltage 9 to 36 V, Output Voltage 1 10.8 to 13.2 V, Output Current 1 4.2 A, Output Power 50000 mW, Isolation Voltage 2250 Vdc. Tags: Through Hole, Buck-Boost. More details for PKU3513S can be seen below.