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:
Jul. 13, 2010
Filed:
Jul. 12, 2007
Iman Taha, Cary, NC (US);
Vincent Acierno, Chapel Hill, NC (US);
Iman Taha, Cary, NC (US);
Vincent Acierno, Chapel Hill, NC (US);
Qimonda North America Corp., Durham, NC (US);
Abstract
A voltage regulator comprises first and second amplifier stages, a common-source output stage and a feedback path. The output stage drives a capacitive load with a regulated voltage responsive to a signal applied to the output stage. The capacitive load sets the dominant pole of the voltage regulator. The first amplifier stage amplifies the difference between the regulated voltage and a reference voltage. The second amplifier stage drives the output stage with a signal corresponding to the difference between the regulated voltage and the reference voltage. The feedback path couples an output node of the second amplifier stage to an input node of the second amplifier stage for reducing the output resistance of the second amplifier stage to shift a non-dominant pole of the voltage regulator set by the second amplifier stage.