Title :
Soft-switched DC/DC converter with PWM control
Author :
Oruganti, Ramesh ; Heng, Phua Chee ; Guan, Jeffrey Tan Kian ; Choy, Liew Ah
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
fDate :
1/1/1998 12:00:00 AM
Abstract :
In this paper, a new power converter with two variations is proposed. A novel asymmetrical pulse-width-modulation (PWM) control scheme is used to control the power converter under constant switching frequency operation. The modes of operation for both variations are discussed. The DC characteristics, which can be used in the design of the power converters, are also presented. Two 50 W power converters were built to verify the characteristics of the converters. Due to the zero-voltage-switching (ZVS) operation of the switches and low device voltage and current stresses, these power converters have high full- and partial-load efficiencies. They are, therefore, potential candidates for high-efficiency high-density power supply applications
Keywords :
DC-DC power convertors; PWM power convertors; field effect transistor switches; power MOSFET; power field effect transistors; power semiconductor switches; switching circuits; 50 W; DC characteristics; ZVS; asymmetrical PWM control scheme; constant switching frequency operation; power MOSFET switches; power conversion efficiency; soft-switched DC/DC power converter; zero-voltage-switching; DC-DC power converters; Low voltage; Power supplies; Pulse width modulation; Pulse width modulation converters; Stress; Switches; Switching converters; Switching frequency; Zero voltage switching;
Journal_Title :
Power Electronics, IEEE Transactions on
