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. 10, 2012
Filed:
Aug. 12, 2009
Applicants:
Sri N. Easwaran, Freising, DE;
Michael Wendt, Wasserburg, DE;
Inventors:
Sri N. Easwaran, Freising, DE;
Michael Wendt, Wasserburg, DE;
Assignee:
Texas Instruments Deutschland GmbH, Freising, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An integrated regulated current drive circuit for driving a squib of an inflatable airbag has a current sense resistor connected in series with a load, and a reference resistor connected in series with a reference current source. Both resistors are matched to define a precise ratio of resistance values which determines the amount of current fed to the squib. Both resistors are implemented by combining a number of identical on-chip resistor elements.