The DDR-15L-3.3 from Mean Well is a DC to DC Converter with Input Voltage 18 to 75 V, Output Voltage 1 3.3 V, Output Current 1 4500 mA, Output Power 15000 mW, Operating Temperature -40 to 85 Degree C. Tags: Buck/Step down. More details for DDR-15L-3.3 can be seen below.