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:
Jun. 28, 2005
Filed:
Jun. 07, 2002
Holger Wenske, Freising, DE;
Holger Wenske, Freising, DE;
Infineon Technologies AG, Munich, DE;
Abstract
The invention provides a method for amplification of analog push-pull signals () by means of a push-pull amplifier output stage () which has a first output stage transistor () and a second output stage transistor (), with first and second analog push-pull signals () being applied to the first and second output stage transistors () and to first and second control transistors (), by which means first and second control currents () are controlled, furthermore with the second control current () which is controlled by the second control transistor () being mirrored by means of a current mirror device () into a mirrored second control current (), with the first control current () being compared with a first reference current, with the mirrored second control current () being compared with a second reference current, with reference voltage levels () which are produced by the comparison processes being logically linked in an AND gate (), and with a fault signal () which is produced by the AND gate () being used to drive a limiter transistor () in order to limit any inrush current flow through the output stage transistors ().