Patent ID: 6975098

Claim:
A method of distributing power from an input source to a load, where the load may vary over a normal operating range, comprising: using a first regulator to convert power from the input source at a source voltage, V source , and deliver a controlled DC voltage, V f , to a factorized bus; using a voltage transformation module (“VTM”) to convert power, via a transformer, from the factorized bus at an input voltage V in , essentially equal to the voltage delivered to the bus, V f , to a DC output voltage, V out ; and using in the VTM an essentially constant voltage gain, K=V out /V in , at a load current, V out being less than V in and the VTM having a time constant, T VTM ; wherein the load is supplied with a voltage, V L , essentially equal to the output voltage of the VTM, V out , which is regulated by the first regulator under control of a closed loop having a response time, T PRM ; using a first capacitance, C 1 , connected across V L at the point of load to supply instantaneous current requirements of the load for a first time interval, T 1 , with a maximum voltage deviation, ΔV L1 , of the nominal voltage, V L , required by the load; using a second capacitance, C 2 , connected across V f at the VTM input to supply instantaneous current requirements of the VTM for a second time interval, T 2 , with a maximum voltage deviation, ΔV f , of the nominal voltage, V f , at the input of the VTM; and wherein T 2 ≧T PRM >T 1 ≧T VTM , C 2 /K 2 ≧C 1 , and ΔV f *K≦ΔV L1 .