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 :
Dept. of Electr. & Electron. Eng., Nippon Inst. of Technol., Saitama, Japan
fDate :
6/23/1905 12:00:00 AM
Abstract :
A class E isolated DC/DC 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 PWM synchronous rectifier. By controlling the conduction time of controlled switch in rectifier, high-frequency AC current is rectified and the output voltage can be controlled at the same time. The 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 switching frequency 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; voltage control; voltage regulators; 1 MHz; 91.2 percent; class E isolated DC/DC converter; class E low dv/dt PWM synchronous rectifier; controlled switch conduction time control; fixed switching frequency; high-frequency transformer; output voltage regulation; series-resonant inverter; switching frequency; Circuits; DC-DC power converters; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Switches; Switching frequency; Voltage control; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954053
