Abstract

A class E resonant switch is developed from the conventional class E resonant converter. Using the class E resonant switch instead of the PWM switch, a new family of class E resonant converters is proposed. Assuming the current flowing through the tuned network of the converter is a pure sinusoidal waveform, the characteristics of the converters are analyzed using Fourier series expansion. As a result, it is known that a class E resonant converter can convert a constant voltage to a constant current or vice versa and the output regular can be accomplished over a narrow band of switching frequency. The operation principle and the analysis are verified by experiments on 2-MHz converters.

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