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US 6,605,857 B2Granted
Reducing magnetic coupling using triple well
AssigneeProgrammable Silicon Solutions
InventorsTing-Wah Wong, Chong L. Woo, Clement Szeto
Life of this patent
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Abstract
An integrated inductive element may be formed over a substrate. A triple well may be defined in a star-shape, in one embodiment, in the substrate beneath the integrated inductive element in order to reduce eddy current losses arising from magnetic coupling between integrated inductors associated with the same integrated circuit.
Claims10
An integrated circuit comprising:
- a substrate of a first conductivity type;
- a spiral inductive element formed over said substrate;
- and
- a triple well includes a second conductivity type well with a first conductivity type well formed in the second conductivity type well formed in said substrate beneath said inductive element, said triple well including at least three radially extending fingers shaped triple wells.
1 more element
Dependencies are inferred from the claim text.