The LDX-B20 from Bel Fuse is a DC to DC Converter with Input Voltage 12 to 48 V, Output Voltage 1 12 to 72 V, Output Current 1 20000 mA, Output Power 500000 mW, Operating Temperature -40 to 70 Degree C. Tags: Boost/Step Up. More details for LDX-B20 can be seen below.