VMOS

VMOS

VMOS (pronEng|ˈviːmɒs), is an acronym for Vertical Metal Oxide Semiconductor (Transistor). Vmos is also used to describe the V-groove shape vertically cut into the substrate material metal oxide semiconductor transistor.

The "V" shape of the MOSFET's gate allows the device to deliver a higher amount of current from the source to the drain of the device. The shape of the depletion region creates a wider channel, allowing more current to flow through it.

The device was used as a power device until more suitable geometries, like the UMOS (or Trench-Gate MOS) were introduced in order to lower the maximum electric field at the top of the V shape and thus leading to higher maximum voltages than in case of the VMOS.


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