The PKR2221A from Flex Power Modules is a DC to DC Converter with Input Voltage 18 to 36 V, Output Voltage 1 15 V, Output Current 1 0.62 A, Output Power 7440 mW, Output Voltage 2 -9 V. Tags: Through Hole, Surface Mount, Buck/Step down. More details for PKR2221A can be seen below.