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:
Jul. 23, 2013
Filed:
Aug. 06, 2010
Vadim V. Ivanov, Tucson, AZ (US);
Juergen Neuhaeusler, Bad Aibling, DE;
Frank Vanselow, Attenkirchen, DE;
Vadim V. Ivanov, Tucson, AZ (US);
Juergen Neuhaeusler, Bad Aibling, DE;
Frank Vanselow, Attenkirchen, DE;
Texas Instruments Deutschland GmbH, Freising, DE;
Abstract
An electronic device includes a circuit for measuring a current in an inductor, wherein the current in the inductor is controlled by alternately switching a first power transistor and a second power transistor each having a first electrode, a second electrode and a control gate. The measuring circuit includes a first sense transistor having a first electrode, a second electrode and a control gate, the first sense transistor having the control gate coupled to the control gate of the first power transistor. A second electrode is coupled to the second electrode of the first power transistor. A second sense transistor has a first electrode, a second electrode and a control gate, the second sense transistor having the control gate coupled to the control gate of the second power transistor and having the second electrode coupled to the second electrode of the second power transistor. An amplifier is operable in a first configuration for providing an output current that is a function of a first current though the first sense transistor during a first period of time or in a second configuration for providing the output current as a function of a second current through the second sense transistor during a second period of time, so as to alternately sense a current through the first power transistor with the first sense transistor and through the second power transistor with the second sense transistor.