Power processing module for military digital equipment power subsystem

A 28V 75A DC-DC Converter has been developed as a Standard Primary Power Module for application in the U. S. Army Electronics Command digital equipment power systems. A new power stage concept, "Series Inductor/Parallel Inverter," was mechanized into a phase displed four power stage configuration that provides the necessary protection of the power transistors from overstress during transformer saturation, during overlap of the two switching transistors due to storage time, during startup and during output overload. The application of the dual loop control feedback system to this multi stage system provides precision regulation and good dynamic response for the DC output.