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:
Jul. 07, 2015
Filed:
Jun. 25, 2013
Applicant:
Sandisk Technologies Inc., Plano, TX (US);
Inventors:
Feng Pan, Fremont, CA (US);
Trung Pham, Fremont, CA (US);
Assignee:
SanDisk Technologies, Inc., Plano, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/07 (2006.01);
U.S. Cl.
CPC ...
H02M 3/07 (2013.01);
Abstract
In a charge pump system using a capacitive voltage divider, or other feedback circuit requiring periodic refreshing, in order to refresh the circuit, system operations would typically need to be suspended in order to refresh the capacitors if charge leakage begins to affect the output level. This can lead to delay and power inefficiencies. To overcome this, two feedback circuits are used so that while one is active, the other can have its capacitors' state refreshed. By alternating the two networks, delay can be avoided and power use reduced.