Invention Grant
- Patent Title: Overdrive I/O ESD protection network
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Application No.: US18366215Application Date: 2023-08-07
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Publication No.: US12301219B2Publication Date: 2025-05-13
- Inventor: Chia-Hui Chen , Yu-Kai Tsai , Chia-Jung Chang
- Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
- Applicant Address: TW Hsinchu
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW Hsinchu
- Agency: Jones Day
- Main IPC: H02H9/04
- IPC: H02H9/04 ; H03K17/06 ; H03K17/687 ; H03K19/003

Abstract:
Systems and methods are provided for an electronic device that comprises a core logic circuit coupled to a supply voltage rail and an operating voltage rail. During a standard operation, the supply voltage rail has a supply voltage, the operating voltage rail has an operating voltage, and a post driver voltage rail has an overdrive voltage that is greater than the operating voltage. The electronic device further comprises a first power clamp circuit coupled to the supply voltage rail and the post driver voltage rail, a low-side logic-high voltage rail coupled to the first end of the core logic circuit, and a first power-to-power clamp circuit coupled to the low-side logic-high voltage rail and the post driver voltage rail. The first power-to-power clamp circuit is configured to receive electrostatic discharge (ESD) current between the post driver voltage rail and the low-side logic-high voltage rail.
Public/Granted literature
- US20250055449A1 Overdrive I/O ESD Protection Network Public/Granted day:2025-02-13
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