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:
Oct. 27, 2009
Filed:
May. 05, 2006
Guenther Bergmann, Blaustein, DE;
Guenther Bergmann, Blaustein, DE;
Atmel Automotive GmbH, Heilbronn, DE;
Abstract
A driver circuit including an amplifier, which generates a control signal from a reference signal; a driver current mirror; and a control current switch located between the amplifier and the driver current mirror which selectably isolates the driver current mirror from the amplifier or connects the driver current mirror to the amplifier, wherein the driver current mirror, when in a state connected to the amplifier, amplifies the control signal into a driver signal. A compensating circuit is provided that generates a correction signal, as a function of an error current of the driver current mirror and provides the correction signal to an input of the amplifier, wherein a feedback signal input of the amplifier is fed through a feedback path from a feedback signal coupled out of a control branch of the driver current mirror, and the compensating circuit additively provides the correction signal at an input of the amplifier.