Analysis and Design of Class E Low dv/dt PWM Synchronous Rectifier Regulating the Output Voltage at a Fixed Frequency


IEICE TRANSACTIONS on Communications   Vol.E84-B   No.10   pp.2880-2886
Publication Date: 2001/10/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Energy in Electronics Communications
class E low dv/dt rectifier,  ZVS rectifier,  synchronous rectifier,  ZVS PWM dc/dc converter,  

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A class E low dv/dt PWM synchronous rectifier regulating the output voltage at a fixed frequency is presented, analyzed and verified experimentally. This rectifier is derived from the class E low dv/dt rectifier by replacing the controlled switch (MOSFET with its anti-parallel diode) with the rectifier diode in class E low dv/dt rectifier, and by using the synchronized PWM signal to control the output voltage at desired value. The ZVS condition of the controlled switch can be maintained from full-loaded to open-loaded. The experimental results measured at switching frequency 1 MHz are in good agreement with the theoretical prediction.