3_Power Device 3080 Wonwoo Choi

3_Power Device 3080 Wonwoo Choi - Power Device: SiC MOSFET...

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Power Device: SiC MOSFET Wonwoo Choi 4/13/2011 ECE 3080
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Background - What is a Power Device? - Essentially a Switch - Blocks current at off state - Conducts current at on state - Ideally want no energy loss when switching from on/off state - State is on when voltage reaches the breakdown voltage, V BD
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Background - Applications V BD < 1000 V Switch-mode power supplies -Uninterrupted power supply > 1000 V Hybrid vehicles Motor drives Avionics (lower weight) Inverters/converters: alternative energy (solar, wind ) Defense (Navy: electric ships)
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SiC vs Si - Why Silicon Carbide?
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SiC MOSFET SiC MOSFETs perform well Efficient Switching High blocking voltage High temperature High frequency due to high Saturation Velocity
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- SiC MOSFETs have a big disadvantage over other SiC (or other materials such as Si) power devices. -
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This note was uploaded on 08/23/2011 for the course ECE 3080 taught by Professor Staff during the Spring '08 term at Georgia Institute of Technology.

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3_Power Device 3080 Wonwoo Choi - Power Device: SiC MOSFET...

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