The CWA005 from Aegis Power Systems is a DC to DC Converter with Input Voltage 27.25 to 28.75 V, Output Voltage 1 3.3 V, Output Current 1 4 A, Output Power 13.2 to 216.5 W, Output Voltage 2 5 V. Tags: Chassis Mount, Buck/Step down. More details for CWA005 can be seen below.