High efficiency on-chip 3D transformer structure

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United States of America Patent

PATENT NO 9251948
APP PUB NO 20150028982A1
SERIAL NO

13950008

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Abstract

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A transformer structure includes a first coil having two sections of spiral, with a top section including a plurality of metal layers occupying top X metal layers and a bottom section including a plurality of metal layers occupying bottom Z metal layers, where X and Z represent a number of metal layers having a specific number selected to provide a particular performance of the first coil. A second coil of the transformer is disposed between the two sections of the first coil and includes a plurality of metal layers where Y represents a number of vertically adjacent metal layers, with the specific number chosen to provide the particular performance, such that a sum X+Y+Z represents a total number of vertical metal layers for the transformer structure.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barry, Robert L Essex Junction, US 51 2377
Vanukuru, Venkata Nr Bangalore, IN 20 91

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