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. 24, 2019
Filed:
Apr. 23, 2018
Applicant:
Silicon Laboratories Inc., Austin, TX (US);
Inventors:
Jeffrey L. Sonntag, Austin, TX (US);
Dazhi Wei, Austin, TX (US);
Michael D. Mulligan, Austin, TX (US);
Zachary A. Kaufman, Austin, TX (US);
Joselyn Torres-Torres, Austin, TX (US);
Assignee:
Silicon Laboratories Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/156 (2006.01); H02M 3/158 (2006.01); G05F 1/563 (2006.01); H03K 5/24 (2006.01); H02M 1/08 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
G05F 1/563 (2013.01); H02M 1/08 (2013.01); H02M 3/156 (2013.01); H02M 3/158 (2013.01); H02M 3/1582 (2013.01); H03K 5/24 (2013.01); H02M 2001/0032 (2013.01); H02M 2001/0045 (2013.01);
Abstract
A pulse frequency modulated (PFM) voltage converter autonomously switches between buck, buck-boost, and boost modes as a function of the input and output voltages. The voltage converter may also switch autonomously between buck mode and a low drop out (LDO) mode when configured in a system in which the battery voltage is known to always be higher than the output voltage.