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:
Jan. 01, 2013
Filed:
Oct. 05, 2009
James W. Zhao, San Francisco, CA (US);
Reed W. Adams, Mountain View, CA (US);
Kenji Tomiyoshi, Mihama-Ku Chiba, JP;
Bin Shao, Shanghai, CN;
Atsushi Matamura, Tokyo, JP;
Yogesh Sharma, Santa Clara, CA (US);
Todd Thomas, San Jose, CA (US);
James W. Zhao, San Francisco, CA (US);
Reed W. Adams, Mountain View, CA (US);
Kenji Tomiyoshi, Mihama-Ku Chiba, JP;
Bin Shao, Shanghai, CN;
Atsushi Matamura, Tokyo, JP;
Yogesh Sharma, Santa Clara, CA (US);
Todd Thomas, San Jose, CA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
An ESD protection circuit for a switching power converter which includes a high-side switching element connected between a supply voltage and the switching node, and a low-side switching element connected between the switching node and a common node. A current conduction path couples an ESD event that occurs on the switching node to an ESD sense node, and an ESD sensing circuit coupled to the sense node generates a trigger signal when an ESD event is sensed. A first logic gate keeps the high-side switching element off when the trigger signal indicates the sensing of an ESD event, and a second logic gate causes the low-side switching element to turn on when an ESD event is sensed such that the low-side switching element provides a conductive discharge path between the switching node and common node.