Invention Grant
- Patent Title: Electrostatic discharge guard ring with snapback protection
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Application No.: US18451292Application Date: 2023-08-17
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Publication No.: US12336299B2Publication Date: 2025-06-17
- Inventor: Sunglyong Kim , David LaFonteese , Seetharaman Sridhar , Sameer Pendharkar
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Andrew R. Ralston; Frank D. Cimino
- Main IPC: H01L27/02
- IPC: H01L27/02 ; H01L29/06 ; H01L29/08 ; H01L29/10 ; H01L29/40 ; H01L29/732 ; H01L29/78 ; H10D30/65 ; H10D62/13 ; H10D62/17 ; H10D84/00 ; H10D89/60 ; H10D10/40 ; H10D62/10 ; H10D64/00

Abstract:
An electrostatic discharge (ESD) protection structure that provides snapback protections to one or more high voltage circuit components. The ESD protection structure can be integrated along a peripheral region of a high voltage circuit, such as a high side gate driver of a driver circuit. The ESD protection structure includes a bipolar transistor structure interfacing with a PN junction of a high voltage device, which is configured to discharge the ESD current during an ESD event. The bipolar transistor structure has a collector region overlapping the PN junction, a base region embedded with sufficient pinch resistance to launch the snapback protection, and an emitter region for discharging the ESD current.
Public/Granted literature
- US20230395589A1 ELECTROSTATIC DISCHARGE GUARD RING WITH SNAPBACK PROTECTION Public/Granted day:2023-12-07
Information query
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