The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2024
Filed:
Jun. 03, 2022
Huawei Technologies Co., Ltd., Shenzhen, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
An electrostatic discharge (ESD) protection circuit is provided to minimize ESD damage to an internal circuit in a CDM model. The ESD protection circuit includes two stages of discharging circuits that are coupled to an IO pin and the internal circuit, a first power clamp circuit, and a second power clamp circuit. The first power clamp circuit is electrically connected to a power rail and a ground rail to discharge a part of a current to the ground, and the second power clamp circuit is electrically connected to a second-stage discharging circuit and the ground rail, so that the other part of the current is discharged to the ground through the second power clamp circuit.