Electrostatic discharge protection circuit for integrated circuits
First Claim
1. An electrostatic discharge (ESD) protection circuit for an integrated circuit (IC), comprising:
- a first electrostatic discharge (ESD) protection component; and
a second electrostatic discharge (ESD) protection component coupled in series to said first electrostatic discharge (ESD) protection component,wherein a first buried layer is formed underneath a p-well region of said first electrostatic discharge protection (ESD) component and a second buried layer region is formed underneath an n-sinker region of said second electrostatic discharge protection (ESD) component and are integrated and coupled via a buried layer to buried layer region.
3 Assignments
0 Petitions
Accused Products
Abstract
An electrostatic discharge (ESD) protection circuit for an integrated circuit (IC) that provides ESD protection during an ESD event is disclosed. The electrostatic discharge (ESD) protection circuit includes a first electrostatic discharge (ESD) protection component and a second electrostatic discharge (ESD) protection component coupled in series to the first electrostatic discharge (ESD) protection component. A snapback holding voltage of the electrostatic discharge protection circuit is greater than the operating voltage of the electrostatic discharge protection circuit and a snapback trigger voltage of the electrostatic discharge protection circuit is lower than an oxide breakdown voltage of said integrated circuit.
56 Citations
21 Claims
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1. An electrostatic discharge (ESD) protection circuit for an integrated circuit (IC), comprising:
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a first electrostatic discharge (ESD) protection component; and a second electrostatic discharge (ESD) protection component coupled in series to said first electrostatic discharge (ESD) protection component, wherein a first buried layer is formed underneath a p-well region of said first electrostatic discharge protection (ESD) component and a second buried layer region is formed underneath an n-sinker region of said second electrostatic discharge protection (ESD) component and are integrated and coupled via a buried layer to buried layer region. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electrostatic discharge (ESD) protection circuit for an integrated circuit (IC), comprising:
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a current flow control component; and a current flow direction control component coupled in series to said current flow control component, wherein a first buried layer is formed underneath a p-well region of said current flow control component and a second buried layer region is formed underneath an n-sinker region of said current flow direction control component and are integrated and coupled via a buried layer to buried layer region wherein a snapback holding voltage of said electrostatic discharge protection circuit is greater than an operating voltage of said electrostatic discharge protection circuit and a snapback trigger voltage of said electrostatic discharge protection circuit is lower than an oxide breakdown voltage of said IC. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An integrated circuit (IC) with electrostatic discharge (ESD) protection, comprising:
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an input; an integrated circuit die coupled to said input; a first electrostatic discharge (ESD) protection component coupled to said input; and a second electrostatic discharge (ESD) protection component coupled in series to said first electrostatic discharge (ESD) protection component, wherein a first buried layer is formed underneath a p-well region of said first electrostatic discharge protection (ESD) component and a second buried layer region is formed underneath an n-sinker region of said second electrostatic discharge protection (ESD) component and are integrated and coupled via a buried layer to buried layer region wherein a snapback holding voltage of said electrostatic discharge protection circuit is greater than an operating voltage of said electrostatic discharge protection circuit and a snapback trigger voltage of said electrostatic discharge protection circuit is lower than an oxide breakdown voltage of said IC. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification