IGBT (Insulated Gate Bipolar Translator) device with MOS (Metal Oxide Semiconductor) control hole path
A device and channel technology, applied in the field of power semiconductor devices, can solve the problems of large switching loss and reduced withstand voltage of devices, and achieve the effects of reducing saturated conduction voltage drop, compatible manufacturing process, and reducing turn-off loss
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[0032] Example 1:
[0033] An IGBT device with MOS controlled hole path, such as figure 2 As shown, the cell structure includes a metal collector 7, a P+ collector region 6, an N-type buffer layer 5, an N-drift region 4, and a metal emitter 11 that are sequentially stacked from bottom to top; the N-drift region 4 The middle area of the top layer is provided with a P+ floating pbody region 8, two sides of the P+ floating pbody region 8 are respectively provided with a P+ base region 2, and the top layer of the P+ base region 2 is provided with an N+ emitter region 1; The region 2 and the N+ emitter region 1 are in contact with the metal emitter 11; the P+ base region 2 and the N+ emitter region 1 are provided with an IGBT gate structure between the P+ floating pbody region 8 and the P+ floating pbody region 8 Not adjacent to the gate structure, the gate structure includes a gate electrode 9 and a gate dielectric layer 3. The gate dielectric layer 3 extends in the vertical direc...
Example Embodiment
[0051] Example 2
[0052] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the MOS control gate electrode 14 adopts a sharp-angle MOS control gate structure to further reduce the Miller capacitance.
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