Single-cycle resonant converters: a new group of quasi-resonant converters suitable for high-performance DC/DC and AC/AC conversion applications

J.G. Cho, G.H. Cho
1991 IEEE transactions on industrial electronics (1982. Print)  
A new resonant switch and a new family of zerocurrent and zero-voltage mixed-mode switching quasi-resonant converters (QRC's) called single-cycle resonant converters (SCRC's) are proposed to improve the performance of the conventional QRC's. The proposed SCRC's, which include two active switches operated with zero-current switching (ZCS) and zero-voltage switching (ZVS), respectively, show very simple operation and easiness in control and analysis, and they overcome the limited load range
more » ... ed load range characteristics of the conventional ZCS QRC's. Furthermore, the SCRC's can be applied even for a high-frequency ac chopper by replacing unidirectional switches with bidirectional ones. Steady-state operation and characteristics of the buck-type SCRC's are analyzed and compared with those of the buck-type full-wave QRC (FW-QRC). Experimental results at a 2OO-kHz, 1-kW level are shown to verify the operational principle and characteristics.
doi:10.1109/41.84019 fatcat:gqzsjwz5s5crbecuj5j46an4bu