Class-E resonant regulated DC/DC power converters: analysis of operation, and experimental results at 1.5 MHZ

We present analytical results, design considerations and experimental results at 1.5 MHZ, for a novel, resonant, high-frequency de/de converter. The circuit works virtually without dynamic losses at several-MHz switching frequency. The analysis gives the permissible area of the equivalent load impedance for lossless operation, presents a model for regulation by narrow-band frequency control, and characterizes the output full-wave rectifier. Experimental data from a 1.5-MHz, 40-W converter verify the results of the theoretical analysis. The measured efficiency was 85%.