Load and supply invariance in a regulated converter

This paper investigates methods to ease the supply and load interactions commonly encountered in the interconnected systems. The origin of the interactions is the different impedances within the system, which are difficult to predict accurately enough for assessing the stability and performance of the system. In theory, a converter having zero output impedance and absolute attenuation of input noise would provide high load and source invariance. A peak-current-mode controlled (PCMC) buck converter with output-current feedforward (OCF) would provide near to optimal platform for designing highly load and supply invariant converter. Experimental frequency and time-domain measurements prove the theoretical predictions.