Title :
A synchronous rectification featured soft-switching inverter using CoolMOS
Author :
Zhang, Junhong ; Lai, Jih-Sheng
Author_Institution :
Future Energy Electron. Center, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
For high voltage high power inverter applications, power MOSFET has not been widely used due to its slow body diode reverse recovery and high on-state voltage drop. This paper explores coupled magnetic type soft-switching technique to solve the body diode "hard" turn-off problem and uses the low on resistance CoolMOS to give low on-state voltage drop as well as synchronous rectification behaviour for reverse on-state period to achieve high efficiency power conversion. Detailed design consideration and optimization are discussed. A 2.5-kW CoolMOS based soft-switching inverter prototype is designed, fabricated and tested. Test results verified the above features.
Keywords :
invertors; power MOSFET; rectification; switching convertors; 2.5 kW; CoolMOS based soft-switching inverter prototype; body diode reverse recovery; coupled magnetic type soft-switching; high efficiency power conversion; high voltage high power inverter; power MOSFET; reverse on-state period; synchronous rectification; Couplings; Design optimization; Diodes; Immune system; Inverters; Low voltage; MOSFET circuits; Power MOSFET; Power conversion; Testing;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE
Print_ISBN :
0-7803-9547-6
DOI :
10.1109/APEC.2006.1620632
