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. 24, 2016
Filed:
Apr. 08, 2014
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventors:
Xianhui Dong, Beijing, CN;
Xiaojun Xu, Beijing, CN;
Shuchun Zhang, Beijing, CN;
Daniel Jing, Beijing, CN;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 1/36 (2007.01); H02M 3/158 (2006.01);
U.S. Cl.
CPC ...
H02M 3/158 (2013.01); H02M 1/36 (2013.01);
Abstract
PWM control circuits and soft start circuitry thereof are presented in which a source follower circuit provides an input to a pulse generator error amplifier during startup according to a lower one of an internal soft start circuit ramp signal and a voltage across and externally connected capacitor, with a current source connected to the source follower to limit the charging current supplied to the externally connected capacitor.