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In this letter, a novel Superjunction Metal-Oxide -Semiconductor Field Effect Transistor with wave-type field limiting ring (WFLR-SJ-MOSFET) is proposed to improve the di/dt robustness of body diode reverse recovery. When SJ-MOSFET body diode goes through reverse recovery, the WFLR can suppress and rebuild the peak electric field which is resulted from the large current flowing through the sensitive...
This work provides a physical insight into the failure of Superjunction MOSFET (SJ-MOSFET) for full bridge inverter system during an reverse recovery behavior. The inspection of failed SJ-MOSFET reveals burnt-out points in the vicinity of the device edge termination. To explore this result, physical TCAD simulations have been carried out. It is found that there is an extremely inhomogeneous reverse...
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