Patent ID: 8415739

Claim:
A semiconductor component, comprising: a semiconductor material of a first conductivity type having first and second major surfaces; one or more device trenches extending from the first major surface into the semiconductor material, each device trench of the one or more device trenches having first and second sidewalls and a floor; a first termination trench extending from the first major surface into the semiconductor material, the first termination trench having first and second sidewalls and a floor; a first layer of dielectric material disposed on the floors and portions of the sidewalls adjacent to the floors of the one or more device trenches and the first termination trench; a device electrode in each of the one or more device trenches and a first termination electrode on the first layer of dielectric material in the first termination trench; a second layer of dielectric material disposed on each device electrode and on the first termination electrode; a device control electrode in each of the one or more device trenches and a floating electrode in the first termination trench, wherein each device control electrode is electrically isolated from each device electrode by the second layer of dielectric material, the floating electrode is electrically isolated from the first termination electrode by the second layer of dielectric material, and wherein the floating electrode is electrically isolated from each device electrode and from each device control electrode; an impurity material of a second conductivity type in portions of the semiconductor material that are laterally adjacent the first and second sidewalls of the one or more device trenches and the first sidewall of the first termination trench, the impurity material of the second conductivity type absent from the portion of the semiconductor material adjacent the second sidewall of the first termination trench; and an impurity material of the first conductivity type in portions of the semiconductor material that have the impurity material of the second conductivity type and that are adjacent the first and second sidewalls of the one or more device trenches.