Transcription of SiC MOSFET Benefits - STMicroelectronics
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SiC MOSFET Benefits - STMicroelectronics
SiC MOSFET Benefits Jeff Fedison Sr. Applications Engineer Agenda 2. SiC MOSFETs Overview of EV/HEV Power Electronics EV Traction Inverter Design Example Conclusion SiC MOSFET . A Real Revolution for high-voltage Power Switches Wide Bandgap Materials 4. Radical innovation for Power Electronics Si GaN 4H-SiC. Eg (eV) Band gap Vs (cm/s) Electron saturation velocity 1x107 2x107. r dielectric constant 10 Ec (V/cm) Critical electric field 3x105 k (W/cm K) thermal conductivity 5. Ec low on resistance Vs Higher switching frequency Lower switching losses Eg low leakage, high Tj k Operation > 200 C.
The devices were dimensioned in order to get a junction ... • Much smaller semiconductor area giving ultra-compact solution •>1% efficiency improvement (75% lower loss): ... magnetics thanks to the very low switching losses of SiC. Thus power
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