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:
Feb. 19, 2008
Filed:
Oct. 27, 2005
Hibourahima Camara, Beacon, NY (US);
Louis C. Hsu, Fishkill, NY (US);
James D. Rockrohr, Hopewell Junction, NY (US);
Karl D. Selander, Hopewell Junction, NY (US);
Huihao Xu, Brooklyn, NY (US);
Steven J. Zier, Hopewell Junction, NY (US);
Hibourahima Camara, Beacon, NY (US);
Louis C. Hsu, Fishkill, NY (US);
James D. Rockrohr, Hopewell Junction, NY (US);
Karl D. Selander, Hopewell Junction, NY (US);
Huihao Xu, Brooklyn, NY (US);
Steven J. Zier, Hopewell Junction, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system for protecting a weak device operating in micro-electronic circuit that includes a high voltage power supply from high voltage over stressing prevents the weak device from failing during power-up, power-down, and when a low voltage power supply in a multiple power supply system is absent. The system includes a low voltage power supply detection circuit configured to detect circuit power-up, circuit power-down, and when the low voltage power supply is absent, and generate a control signal upon detection. The system further includes a controlled current mirror device configured to provide a trickle current to maintain a conduction channel in the weak device in response to the control signal received from the low voltage power supply detection circuit during circuit power-up, circuit power-down, and when the low voltage power supply is absent.