Invention Grant
- Patent Title: Electrostatic discharge protection circuit
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Application No.: US15894269Application Date: 2018-02-12
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Publication No.: US10700516B2Publication Date: 2020-06-30
- Inventor: Chien-Ming Wu
- Applicant: REALTEK SEMICONDUCTOR CORPORATION
- Applicant Address: TW Hsinchu
- Assignee: REALTEK SEMICONDUCTOR CORPORATION
- Current Assignee: REALTEK SEMICONDUCTOR CORPORATION
- Current Assignee Address: TW Hsinchu
- Agency: WPAT, PC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@23a0ce7c
- Main IPC: H02H9/04
- IPC: H02H9/04 ; H02H1/00 ; H01L27/02

Abstract:
The present invention discloses an electrostatic discharge (ESD) protection circuit including: a first terminal configured to provide a first voltage having a first value in a normal mode; a second terminal configured to provide a second voltage having a second value in the normal mode; a detection circuit configured to provide a detection voltage according to the first and second voltages; and a protection circuit configured to operate in one of the normal mode and an ESD mode according to the detection voltage. When the difference between a value of the detection voltage and an average of the first and second values reaches a predetermined threshold, the protection circuit enters the ESD mode from the normal mode, and thereby has a first path between the first terminal and a grounding terminal and/or a second path between the second terminal and the grounding terminal be conductive for discharging abnormal energy.
Public/Granted literature
- US20180248366A1 Electrostatic discharge protection circuit Public/Granted day:2018-08-30
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