Method and system for optimizing filter compensation coefficients for a digital power control system

摘要

A method and system for optimizing the digital filter compensation coefficientsof a digitally controlled switched mode power supply within a distributed powersystem is disclosed A power control system comprises at least one point-of-load(POL) regulator having a power conversion circuit adapted to convey power toa load and a digital controller coupled to the power conversion circuit thougha feedback loop The digital controller includes a digital filter having a transferfunction defined by plural filter coefficients The digital controller periodicallystores samples of the feedback measurement The system controller retrievesstored samples from the digital controller via a seπal data bus After retπevinga pre-determined number of the samples, the system controller calculates optimizedfilter coefficients for the digital filter and communicates the optimized filtercoefficients to the digital controller for use in the digital filter