Title :
New zero-current switching PWM converters using power MOSFET for lower power applications
Author :
Ma, Keun-Soo ; Joung, Gyu-Bum ; Kim, Yang-Mo
Author_Institution :
Rocket Technol. Div., Korea Aerosp. Res. Inst., Taejon, South Korea
Abstract :
In this paper, a new ZCS-PWM DC/DC power converter in which the auxiliary resonant circuit consists of minimum elements, a resonant inductor, a resonant capacitor and an auxiliary switch, and it is only activated during the main switch commutation is proposed, particularly for low-power applications. The main switch operating under ZCS, and auxiliary switch and main diode operating under ZCS or ZVS at both turn-on and turn-off, is also achieved. A 100 kHz, 60 W breadboarded boost converter has been implemented to verify the operation and performance of the proposed converter. The measured efficiency of the proposed scheme as a function of the output power was 89.35% at full load. Without the proposed scheme, the converter efficiency for the same load was 80.53%.
Keywords :
DC-DC power convertors; PWM power convertors; commutation; power MOSFET; power semiconductor switches; resonant power convertors; switching circuits; 100 kHz; 60 W; 80.53 percent; 89.35 percent; ZCS; ZVS; auxiliary resonant circuit; auxiliary switch; boost converter; low-power applications; main switch commutation; operation; performance; power MOSFET; power conversion efficiency; resonant capacitor; resonant inductor; turn-off; turn-on; zero-current switching PWM DC/DC power converters; Inductors; MOSFET circuits; Power MOSFET; Pulse width modulation converters; RLC circuits; Resonance; Switches; Switching circuits; Switching converters; Zero current switching;
Conference_Titel :
Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual
Print_ISBN :
0-7803-7262-X
DOI :
10.1109/PSEC.2002.1022578