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:
Dec. 29, 2015
Filed:
Jun. 04, 2008
Matthijs Pardoen, Pompetuzat, FR;
Patrice Besse, Toulouse, FR;
Matthijs Pardoen, Pompetuzat, FR;
Patrice Besse, Toulouse, FR;
FREESCALE SEMICONDUCTOR, INC., Austin, TX (US);
Abstract
An electrostatic discharge (ESD) protection circuit for protecting one or more devices in an electronic circuit from an ESD current which enters the electronic circuit through one or more input/output pins, the protection circuit comprising: a voltage clamp circuit connectable to the or each pin, for diverting the ESD current from the or each device; and a current sensor circuit connected between the input/output pins and the voltage clamp circuit and connected to the one or more devices, the current sensor circuit for sensing the ESD current and for switching off the or each device when the sensed current exceeds a threshold value, wherein when a current flows in the current mirror circuits above a threshold value the device is caused to switch off.