Title :
An improved ZVT-PWM DC-DC converter using additional circuit
Author :
Kaewarsa, S. ; Krongkitsiri, W. ; Prapanavarat, C. ; Yangyuen, U.
Author_Institution :
Dept. of Electr. Eng., Rajamangala Inst. of Technol., Sakonnakhon, Thailand
Abstract :
This paper presents an improved ZVT-Technique in a DC-DC boost converter which operates in a continuous current mode with fixed frequency. An additional circuit for reducing the turn-off switching loss of the auxiliary switch circuit was applied. Since the active switches are turned-on and off softly, the switching losses are reduced significantly and a higher efficiency of the system is achieved. A 500 W, 40 kHz boost converter has been implemented to verify the operation and performance of the proposed converter.
Keywords :
DC-DC power convertors; PWM power convertors; losses; switches; switching convertors; zero voltage switching; 40 kHz; 500 W; DC-DC boost converter; PWM converter; ZVT; active switches; boost converter; continuous current mode; switch circuit; switching loss; zero-voltage transition; DC-DC power converters; Diodes; Frequency conversion; Pulse width modulation; Pulse width modulation converters; Switches; Switching circuits; Switching converters; Switching loss; Voltage;
Conference_Titel :
TENCON 2004. 2004 IEEE Region 10 Conference
Print_ISBN :
0-7803-8560-8
DOI :
10.1109/TENCON.2004.1414904
