Invention Application
- Patent Title: PNP CONTROLLED ESD PROTECTION DEVICE WITH HIGH HOLDING VOLTAGE AND SNAPBACK
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Application No.: US17168295Application Date: 2021-02-05
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Publication No.: US20220254772A1Publication Date: 2022-08-11
- Inventor: Jing-Ying Chen
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Main IPC: H01L27/02
- IPC: H01L27/02

Abstract:
An ESD protection device protects a circuit from TLPs between a first terminal and a second terminal. The device includes an NPN discharge structure and a PNP triggering device. The first terminal is coupled to the p-doped emitter and the n-doped base of the PNP triggering device and also the n-doped emitter of the NPN discharge structure. The second terminal is coupled to the n-doped collector of the NPN discharge structure. The p-doped collector of the PNP triggering device is coupled to the p-doped base of the NPN discharge structure. A TLP causes base-collector junction breakdown in the PNP triggering device, which results in a current through the PNP triggering device. That current is injected into the base of the NPN discharge structure, which results in a larger discharge current through the NPN discharge structure. The device provides high holding voltage ESD protection device with snapback.
Public/Granted literature
- US11894362B2 PNP controlled ESD protection device with high holding voltage and snapback Public/Granted day:2024-02-06
Information query
IPC分类: