High-Power-Density DC-to-DC Power-Converter Modules

Dc-to-dc power-converter modules that operate with input potentials from 60 to 140 V and generate various output potentials up to 15 V are undergoing development. Designed specifically for use aboard planned spacecraft wherein electric power will be supplied at bus potentials from 70 to 120 V, these power-converter modules could also be useful in a variety of terrestrial applications. The fully developed versions of these power-converter modules are expected to operate at power densities about 33 percent greater than those of currently available commercial 28-V-input power-converter modules.