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Introduction
Unipower’s 1U high DC/DC converter systems convert a 48VDC nominal input to 12 and 13.6VDC at 1800 and 1950 watts, respectively, or to 24 and 27.2VDC at 2,100 watts; or a 24VDC nominal input to 48 or 54.4VDC at 3,000 watts. The converter system consists of three DC/DC converter modules in a compatible 19-inch rack/shelf. See Figure 1. The input is a wide
range 40 to 60 or 20 to 30VDC, and the output has a -25 to +10% adjustment range. In 2+1 redundant operation the output is 1,400 watts for the TPCMQ48 or 2,000 watts for the TPCMQ24. In this case a converter module can be hot-swapped without affecting the output. The output voltage can be controlled by a remote analog input in the range 0 to +5V.