SPEC - Semiconductor Power Electronics Center
Tuesday November 24, 2009

Power Semiconductor Device Research Focus

Power Semiconductor Devices Based on Non-silicon Materials

  • SiC switching power devices
    1)
    4H-SiC BJT
        :  Higher common emitter current gain compared to the current gain values
    reported for Si BJT.
    Overcomes the problem of the 2nd breakdown of Si BJT

    2) 4H-SiC MOSFET

     
  • GaN switching power devices  

Advanced Silicon Semiconductor Devices

  • Advanced 30~40V low voltage power devices for high freqeuncy DC/DC converters

  • Power and VLSI devices-circuit integration
    (SMART Power IC)

  • Monolithic Vertical Trench Power MOS integration for a high current synchronous buck converter

Novel device technology based on high power thyristor technology 

  • 4.5 kV SiC ETO(emitter turn-off thyristor)

  • 700V Double Resurf SA-LIGBT
    : With the concept of the Hybrid IGBT, a new power device with better performance than COOLMOS is pursuing

Device modeling, calibration and parameter extraction

  • High voltage SiC device design, optimization and modeling

 
Packaged Sample SiC BJT

 Experimental setup of 20 kHz 2 kW boost converter based on 10 kV SiC MOSFET

(SEM)Trench Structure for monolithic Power MOS

4.5-kV SiC ETO prototype
 

 

NC State University