Non-planar vertical dual source drift metal-oxide semiconductor (VDSMOS)

A non-planar lateral drift MOS device eliminates the need for a field plate extension, which reduces gate width. In one example, two sources and two comparatively small gates in a raised structure allow for two channels and a dual current with mirrored flows, each traveling into and downward through...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Vakada Vara Govindeswara Reddy, Liu Yanxiang, Ciavatti Jerome
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A non-planar lateral drift MOS device eliminates the need for a field plate extension, which reduces gate width. In one example, two sources and two comparatively small gates in a raised structure allow for two channels and a dual current with mirrored flows, each traveling into and downward through a center region of a connecting well that connects the substrate with the drain areas and shallow wells containing the source areas, the current then traveling in opposite directions within the substrate region of the connecting well toward the two drains. The source and drain areas may be separate raised structures or isolated areas of a continuous raised structure.