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:
Apr. 20, 2010
Filed:
Jul. 31, 2007
Applicants:
Cheng Hsun Lin, Plano, TX (US);
Qiong M. LI, Allen, TX (US);
Eric Labbe, Sunnyvale, CA (US);
Inventors:
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 23/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system for detecting a direct current (DC) component of a pulse-width modulated (PWM) signal includes a modulator configured to provide at least one PWM signal to an input of an amplifier. A DC detector is configured to detect a DC component of a selected one of the at least one PWM signal as a function of a switching frequency of the selected PWM signal. The DC detector provides at least one report signal that indicates a level of the DC component of the selected PWM signal relative to a predetermined threshold.