27 kV, 20 A 4H-SiC n-IGBTs

By E. van Brunt, M. O'loughlin, J. Richmond, V. Pala, J. Palmour, C. W. Tipton, C. Scozzie. 2015

138 citations recorded by the source corpus.

In this work, we report our recently developed 27 kV, 20 A 4H-SiC n-IGBTs. Blocking voltages exceeding 24 kV were achieved by utilizing thick (210 μm and 230 μm), lightly doped N-drift layers with an appropriate edge termination. Prior to the device fabrication, an ambipolar carrier lifetime of greater than 10 μs was measured on both drift regions by the microwave photoconductivity decay (μPCD) technique. The SiC n-IGBTs exhibit an on-state voltage of 11.8 V at a forward current of 20 A and a gate bias of 20 V at 25 °C. The devices have a chip size of 0.81 cm2 and an active conducting area of 0.28 cm2. Double-pulse switching measurements carried out at up to 16 kV and 20 A demonstrate the robust operation of the device under hard-switched conditions; coupled thermal analysis indicates that the devices can operate at a forward current of up to 10 A in a hard-switched environment at a frequency of more than 3 kHz and a bus voltage of 14 kV.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/437646b6089f92b71a6a2163d06e8c64162342ab

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In Electrical and Electronic Engineering

Citations in the corpus

Power Semiconductor Devices for Smart Grid and Renewable Energy Systems (2017, methodology): “The highest blocking voltage reported so far is a 27-kV SiC n-IGBT, obtained by using a 230μ m drift layer [118].”
Review of Silicon Carbide Power Devices and Their Applications (2017, methodology): “The highest blocking voltage reported so far for an N-IGBT is 27 kV, obtained by using a 230 μm drift layer [57].”
A Review of SiC IGBT: Models, Fabrications, Characteristics, and Applications (2021, background): “The blocking voltage of SiC IGBT has also exceeded 27 kV [9], becoming the promising device in high voltage fields.”