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. 04, 2000
Filed:
Sep. 30, 1998
William Ng, Leominster, MA (US);
Bernhard Schroter, Upton, MA (US);
Digital Equipment Corp., Houston, TX (US);
Abstract
A technique for controlling a power supply involves receiving a programming signal that indicates a power supply output voltage limit, activating the power supply such that the power supply provides a power supply output voltage according to a power supply threshold voltage, generating a tracking signal that tracks the programming signal, and generating a compare signal according to the tracking signal and an actual value of the power supply output voltage. The technique further involves comparing the compare signal to a protection threshold voltage, maintaining activation of the power supply when the compare signal is less than the protection threshold voltage, and deactivating the power supply when the compare signal is greater than the protection threshold voltage. The protection threshold voltage is independent of the power supply threshold voltage. In particular, a power supply threshold reference source provides the power supply threshold voltage, a protection threshold reference source, which is independent of the power supply threshold reference source, provides the protection threshold voltage.