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.

Date of Patent:
Jan. 08, 2019

Filed:

Jun. 15, 2015
Applicant:

Futurewei Technologies, Inc., Plano, TX (US);

Inventors:

Liming Ye, Frisco, TX (US);

Jinbo Huang, Guangzhou, CN;

Heping Dai, Plano, TX (US);

Dianbo Fu, Plano, TX (US);

Daoshen Chen, Allen, TX (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/10 (2006.01); H02M 3/158 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/1582 (2013.01); H02M 2001/0025 (2013.01); H02M 2001/0032 (2013.01); H02M 2001/0058 (2013.01); Y02B 70/1425 (2013.01); Y02B 70/1491 (2013.01); Y02B 70/16 (2013.01);
Abstract

A method comprises generating a first ramp signal and a second ramp signal for controlling a buck converter portion and a boost converter portion of a buck-boost converter respectively, comparing the first ramp signal and the second ramp signal to a control signal, controlling the buck converter portion using the comparing the first ramp signal to the control signal and the boost converter portion using the comparing the second ramp signal to the control signal, comparing a current flowing through the inductor to a current threshold and terminating a switching cycle based upon the comparing the current flowing through the inductor to the current threshold.


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