The TSD-1000L-48 from Technology Dynamics is a DC to DC Converter with Input Voltage 19 to 72 V, Output Voltage 1 48 V, Output Current 1 21 A, Output Power 1000 W, Isolation Voltage 2 kV. Tags: Rack mount, Buck-Boost. More details for TSD-1000L-48 can be seen below.