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. 05, 2004
Filed:
Oct. 02, 2002
Applicant:
Inventors:
David A. Gammie, Tucson, AZ (US);
Jeffery B. Parfenchuck, Tucson, AZ (US);
Jerry L. Doorenbos, Tucson, AZ (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G 7/14 ;
U.S. Cl.
CPC ...
G06G 7/14 ;
Abstract
A base current compensation circuit is configured for injecting base current to the base of a transistor device to compensate for the lost current demanded by a transistor base. The base current compensation circuit is configured to inject current into the base of the transistor without the headroom requirements, as well as being less complex than other approaches. An exemplary base current compensation circuit comprises a sampling circuit and a current mirror feedback circuit configured for providing multiples of the base current demanded by the transistor device.