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. 06, 2015
Filed:
Jan. 28, 2014
Applicant:
Meng Wang, Tianjin, CN;
Inventor:
Meng Wang, Tianjin, CN;
Assignee:
FREESCALE SEMICONDUCTOR, INC., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/10 (2006.01); G05F 3/02 (2006.01); H02M 3/07 (2006.01); H02M 1/00 (2007.01);
U.S. Cl.
CPC ...
H02M 3/07 (2013.01); H02M 3/073 (2013.01); H02M 2001/0019 (2013.01);
Abstract
An apparatus for controlling a charge pump includes a current sensor arranged to output a current sense signal that is linearly proportional to an output current of the charge pump, and an oscillator that provides a clock signal for the charge pump. The oscillator receives the current sense signal and uses it to vary an oscillation frequency of the clock signal. An amplitude of the clock signal also may be varied in response to the current sense signal.