Analysis of Class DE Current Driven Low $di/dt$ Rectifier

Class DE current driven low di/dt rectifier satisfies Class E switching condition and low diode current stress, which is no more than the output current. Thus, the switching loss is decreased extremely. In this paper, the Class DE current driven low di/dt rectifier is analyzed for any diode-on-duty-ratio. The initial phase angle of the input current, the current and voltage transfer functions, the normalized input resistance and inductance, the normalized diode voltage stress, and the power-output capability are obtained, and clarified as the functions of the diode-on-duty ratio and those of R/wL. Moreover, the power conversion efficiency and the circuit design method are shown. The circuit performance has been confirmed by the simulation results and the experimental results. In the simulation and the experiment, the characteristics of the output voltage and the power conversion efficiency against the amplitude of the input current, the load resistance, and the operation frequency have been obtained. In addition, the relationship between the equations, simulation results, and experimental results have been obtained. Theoretical, simulation, and experimental results were in good agreement with each other.