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. 11, 2016
Filed:
Apr. 15, 2014
Texas Instruments Incorporated, Dallas, TX (US);
Shu-Ing Ju, Palo Alto, CA (US);
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
A buck switching voltage regulator, with high side and low side switching transistors, includes mode control circuitry for switching between PWM and PFM modes based on sensing inductor current through the low side switch during switching cycle OFF times (inductor discharge). Mode switching is based on comparing a an integrated inductor current sense signal with an integrated reference signal corresponding to a predefined average inductor current I. In one embodiment, a mode switching condition is based in part on [I=2I−I], where Iis a detected peak inductor current at the beginning of an OFF time, and Iis an inductor current value determined by Iand I.