Trench MOSFET having an independent coupled element in a trench
First Claim
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1. An apparatus comprising:
- a first transistor comprising;
a first trench formed in a first semiconductor substrate;
a first source;
a first gate in the first trench;
a first conductive element in the first trench;
wherein the first conductive element extends between the first gate and a bottom of the first trench;
wherein the first conductive element is isolated from the first source and the first gate by an insulating material.
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Abstract
A trench MOSFET is disclosed that includes a semiconductor substrate having a vertically oriented trench containing a gate. The trench MOSFET further includes a source, a drain, and a conductive element. The conductive element, like the gate is contained in the trench, and extends between the gate and a bottom of the trench. The conductive element is electrically isolated from the source, the gate, and the drain. When employed in a device such as a DC-DC converter, the trench MOSFET may reduce power losses and electrical and electromagnetic noise.
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Citations
16 Claims
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1. An apparatus comprising:
a first transistor comprising; a first trench formed in a first semiconductor substrate; a first source; a first gate in the first trench; a first conductive element in the first trench; wherein the first conductive element extends between the first gate and a bottom of the first trench; wherein the first conductive element is isolated from the first source and the first gate by an insulating material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
Specification