Theoretical study and implementation of a high dynamic performance, high efficiency and low voltage hybrid power supply

This paper presents a theoretical and experimental study of the hybrid sources capabilities to improve both the dynamic response and the stability of switching power supplies. The hybrid sources are composed by the parallel connection of a linear source and a switching one. The reached improvements are possible without affecting, significantly, the efficiency of the whole circuit. This solution is checked in low voltage sources. The obtained experimental results show these power supplies present high dynamical performance, and therefore they can be used to feed DSPs and microprocessors.