Title :
Analysis and design of class E isolated DC/DC converter using class E low dv/dt PWM synchronous rectifier
Author :
Boonyaroonate, Itsda ; Mori, Shinsaku
Author_Institution :
Nippon Inst. of Technol., Saitama, Japan
fDate :
7/1/2001 12:00:00 AM
Abstract :
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%
Keywords :
AC-DC power convertors; DC-AC power convertors; DC-DC power convertors; PWM power convertors; high-frequency transformers; invertors; power transformers; rectifying circuits; resonant power convertors; switching circuits; 1 MHz; 91.2 percent; ZVS; class E isolated DC/DC power converter; class E low dv/dt PWM synchronous rectifier; class E series-resonant inverter; conduction time; high-frequency transformer; output voltage regulation; switching frequency; zero voltage switching; DC-DC power converters; Frequency measurement; Pulse inverters; Pulse width modulation inverters; Rectifiers; Switches; Switching converters; Switching frequency; Voltage control; Zero voltage switching;
Journal_Title :
Power Electronics, IEEE Transactions on
