A mechanism for power processing is presented in which a fixed amount of energy is transferred from the source to the output in each cycle. The result is establishing a family of resonant converters so-called switched-resonator converters. The basic formations include a gallery of 16 non-isolated and 15 isolated DC-DC converters. All topologies are inherently soft-switched and synthesized systematically. A plenary theoretical analysis along with practical results of more than ten implemented prototypes are presented in this dissertation. Acceptable consistency is always seen between the theoretical, simulation, and practical results. A unified study is performed, topologies are categorized, essential and general equations are presented, and the control mechanism is discussed. Comparison charts, step-by-step design procedure, and important practical details are also included. Besides the practical and engineering applications, a beautiful symmetry lies in the topologies which exhibits itself beyond of the mathematical relations. Keywords: dc-dc converter, resonant power conversion, soft switching, ZCS, ZVS, power supply Introduction Power supply is a part of all electronic systems. Switching power supplies have been widely employed thanks to technology advances in the field of semiconductor devices. These converters enjoy proper efficiency, small size, and relatively lesser cost. Major disadvantages of the conventional hard-switching converters include switching-losses, high stresses, restriction in frequency increase, and electromagnetic interference production. Soft-switching topologies have been considered as a suitable approach to obviate these disadvantages since three past decades. At soft-switching condition, switching frequency can be increased to enhance the converter power density. Soft-switching condition is commonly attained by zero-voltage switching (ZVS) or zero-current switching (ZCS). In the most previous soft-switching converters, especially in non-isolated converters, a hard-switching converter builds the converter core while soft-switching condition is achieved by adding auxiliary elements [1]-[7].
