Patent ID: 8581565

Claim:
A switching power converter usable as one of a set of current sharing power converters employing droop equalization of current sharing according to a droop load line, comprising: power conversion circuitry having an isolated switching power stage driving a converter output based on a secondary-side switching control input; interface circuitry configured to drive the secondary-side switching control input of the power conversion circuitry and to generate a stable reference signal and voltage and current sense signals, the secondary-side switching control input being driven based on a power stage control signal, the voltage and current sense signals being generated based on an output voltage and an output current respectively at the converter output; and a digital signal processor operative to execute instructions to perform a regulation method, the regulation method including: applying respective voltage and current scaling factors to the voltage and current sense signals to generate respective scaled voltage and current sense values; generating the power stage control signal with a duty cycle having a predetermined droop-regulation relationship with the stable reference signal and the scaled voltage and current sense values; and performing a calibration procedure to calculate the voltage and current scaling factors as values compensating for component tolerances in the interface circuitry and causing the power stage control signal to be generated to effect regulation of the output voltage and output current according to the droop load line.