The DDR-120B-48 from Mean Well is a DC to DC Converter with Input Voltage 16.8 to 33.6 V, Output Voltage 1 48 V, Output Current 1 2500 mA, Output Power 120000 mW, Operating Temperature -40 to 70 Degree C. Tags: Boost/Step Up. More details for DDR-120B-48 can be seen below.