Segmented power transistor
AssigneeTexas Instruments Incorporated
InventorHenry Litzmann Edwards
Life of this patent
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Abstract
A power transistor includes multiple substantially parallel transistor fingers, where each finger includes a conductive source stripe and a conductive drain stripe. The power transistor also includes multiple substantially parallel conductive connection lines, where each conductive connection line connects at least one source stripe to a common source connection or at least one drain stripe to a common drain connection. The conductive connection lines are disposed substantially perpendicular to the transistor fingers. At least one of the source or drain stripes is segmented into multiple portions, where adjacent portions are separated by a cut location having a higher electrical resistance than remaining portions of the at least one segmented source or drain stripe.
Claims15
A power transistor comprising:
- multiple substantially parallel transistor fingers, each finger including a conductive source stripe and a conductive drain stripe along a first direction;
- and
- multiple substantially parallel conductive connection lines, each connection line connecting at least one source stripe to a common source connection or at least one drain stripe to a common drain connection, the conductive connection lines disposed along a second direction substantially perpendicular to the transistor fingers;
- wherein at least one of the source or drain stripes is segmented into multiple portions, wherein adjacent portions are separated by a cut location having a higher electrical resistance than remaining portions of the at least one segmented source or drain stripe, and wherein a current path between the adjacent multiple portions is discouraged along the first direction.
An electronic device comprising:
- multiple power transistors, each power transistor comprising:
- multiple substantially parallel transistor fingers, each finger including a conductive source stripe and a conductive drain stripe along a first direction;
- and
- multiple substantially parallel conductive connection lines, each connection line connecting at least one source stripe to a common source connection or at least one drain stripe to a common drain connection, the conductive connection lines disposed along a second direction substantially perpendicular to the transistor fingers;
- wherein at least one of the source or drain stripes is segmented into multiple portions, wherein adjacent portions are separated by a cut location having a higher electrical resistance than remaining portions of the at least one segmented source or drain stripe, and wherein a current path between the adjacent multiple portions is discouraged along the first direction.
Dependencies are inferred from the claim text.