Title :
100% Efficient Converter, Is This Possible?
Author :
Yang Gao ; Huang, Alex Q.
Author_Institution :
Semicond. Power Electron. Center, North Carolina State Univ., Raleigh, NC
Abstract :
The power losses inside a typical DC/DC converter is studied in detail by obtaining accurate models for today\´s trench power MOSFET and package parasitics. A novel methodology is proposed to "realize" the futuristic device and package parasitics. The effect of the futuristic technology on the improvement of converter efficiency is studied. It is found that a 3% efficiency improvement is possible if the device figure-of-merit (Qgd*Rdson) improves 100 times, and a 5% efficiency improvement is possible when the parasitics are reduced 100 times at Iout=10 A at 750 kHz. However, 9.4% efficiency improvement could be achieved by combining these two improvements in devices and parasitics as well as reducing the dead-time. Converter efficiency approaching 100% is within reach if these technology progresses can be realized
Keywords :
DC-DC power convertors; power MOSFET; 10 A; 750 kHz; DC-DC converter; converter efficiency; power MOSFET; power losses; Buck converters; Curve fitting; Electronics packaging; Finite element methods; MOSFET circuits; Power MOSFET; Power electronics; SPICE; Semiconductor device packaging; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE
Conference_Location :
Jeju
Print_ISBN :
0-7803-9716-9
DOI :
10.1109/PESC.2006.1712045
