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. 15, 2004
Filed:
Sep. 21, 2001
Applicant:
Inventors:
Priscilla Escobar-Bowser, Plano, TX (US);
Julio E. Acosta, Richardson, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 1/100 ;
U.S. Cl.
CPC ...
H02J 1/100 ;
Abstract
A start up circuit includes: a diode Q ; a first transistor Q coupled in series with the diode Q ; a first resistor R coupled in series with the first transistor Q ; a second transistor Q having a control node coupled to a control node of the first transistor Q and coupled to a node between the first transistor Q and the first resistor R ; and a second resistor R coupled in series with the second transistor Q such that a current in the second transistor Q is independent of a voltage applied across the diode Q , the first transistor Q , and the first resistor R