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:
May. 04, 2010
Filed:
Mar. 03, 2007
James Allen Kohout, Dallas, TX (US);
John H Carpenter, Jr., Rowlett, TX (US);
Brett Jason Thompsen, Dallas, TX (US);
James Allen Kohout, Dallas, TX (US);
John H Carpenter, Jr., Rowlett, TX (US);
Brett Jason Thompsen, Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method and apparatus for a Regulator that automatically configures to work in either SMPS mode or linear mode are disclosed. In one embodiment, the method includes inputting a constant current source to a CBoot_pin for a first predetermined amount of time upon enabling an autodetect circuit by a Regulator control circuit. The CBoot voltage at the CBoot_pin is then determined to see if the CBBoot voltage at the CBoot_pin is above a predetermined CBoot voltage for a second predetermined amount of time. The Regulator is then switched to operate in SMPS mode if the CBoot voltage is substantially continuously above the predetermined CBoot voltage for a second predetermined amount of time. The SMPS is operated in linear mode if the CBoot voltage is substantially continuously below or equal to the predetermined CBoot voltage for a second predetermined amount of time.