Invention Application
- Patent Title: ELECTROSTATIC DISCHARGE GUARD RING WITH SNAPBACK PROTECTION
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Application No.: US16677044Application Date: 2019-11-07
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Publication No.: US20200075576A1Publication Date: 2020-03-05
- Inventor: Sunglyong Kim , David LaFonteese , Seetharaman Sridhar , Sameer Pendharkar
- Applicant: Texas Instruments Incorporated
- Main IPC: H01L27/02
- IPC: H01L27/02 ; H01L29/08 ; H01L29/78 ; H01L29/10

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
- US10896904B2 ESD guard ring with snapback protection and lateral buried layers Public/Granted day:2021-01-19
Information query
IPC分类: