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Analysis and design of class E isolated DC/DC converter using class E low dv/dt PWM synchronous rectifier

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2 Author(s)
Boonyaroonate, I. ; Nippon Inst. of Technol., Saitama, Japan ; Mori, S.

A class E isolated DC/DC power converter for regulating the output voltage at a fixed switching frequency is presented, analyzed and experimentally verified. It consists of class E series-resonant inverter, high-frequency transformer and class E low dv/dt pulse width modulation (PWM) synchronous rectifier. By controlling the conduction time of the controlled switch in the rectifier, high-frequency AC current is rectified and the output voltage can be controlled at the same time. The zero voltage switching (ZVS) condition of all switches can be maintained from full-loaded to open-loaded. The theoretical predictions were in good agreement with the experimental measurements and the maximum efficiency measured at a switching frequency of 1 MHz was 91.2%

Published in:

Power Electronics, IEEE Transactions on  (Volume:16 ,  Issue: 4 )

Date of Publication:

Jul 2001

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