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. 09, 2012
Filed:
Nov. 20, 2009
Vinit Jayaraj, Santa Clara, CA (US);
Vinit Jayaraj, Santa Clara, CA (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method includes receiving an input voltage at a voltage regulator and generating an output voltage using the voltage regulator, which includes an inductor. The method also includes controlling a current through the inductor using a current limit reference and modulating the current limit reference based on the input voltage and the output voltage. Modulating the current limit reference could include modulating a reference current based on a product of first and second input currents. The first input current may be based on the output voltage, and the second input current may be based on a difference between the output and input voltages. The voltage regulator may operate in a pulse frequency mode associated with a repetition rate. The repetition rate and a percentage ripple associated with the output voltage may be substantially constant over variations in the input voltage and variations in the output voltage.