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:
Sep. 13, 2016
Filed:
Jul. 09, 2015
Lenovo Enterprise Solutions (Singapore) Pte. Ltd., Singapore, SG;
Jamaica L. Barnette, Durham, NC (US);
Douglas Evans, Cary, NC (US);
Brian C. Totten, Durham, NC (US);
Lenovo Enterprise Solutions (Singapore) Pte. Ltd., Singapore, SG;
Abstract
A method for controlling a voltage regulator includes monitoring an output current and an inductance of an output inductor in a voltage regulator, wherein the voltage regulator includes high-side and low-side field effect transistors both coupled to an input to the first output inductor. The high-side and low-side field-effect transistors are alternately turned on at a switching frequency, wherein only one of the field-effect transistors is turned on at a time. The method measures a change in the inductance of the output inductor resulting from the output inductor reaching current saturation and measures a rate of change in the output current of the output inductor. The switching frequency is controlled as a function of the measured change in the inductance and the measured rate of change in the output current in order to prevent an amount of current through the high-side field-effect transistor from exceeding a maximum operating current setpoint.