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:
Dec. 13, 2016
Filed:
Jan. 06, 2016
Applicant:
Sandisk Technologies Llc, Plano, TX (US);
Inventors:
Gooty Sukumar Reddy, Anantapur, IN;
Sridhar Yadala, Bangalore, IN;
Assignee:
SanDisk Technologies LLC, Plano, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/10 (2006.01); G05F 3/02 (2006.01); H02M 3/07 (2006.01); G11C 16/14 (2006.01); G11C 16/26 (2006.01); G11C 16/24 (2006.01);
U.S. Cl.
CPC ...
H02M 3/07 (2013.01); G11C 16/14 (2013.01); G11C 16/24 (2013.01); G11C 16/26 (2013.01);
Abstract
Techniques are presented for improving the efficiencies of multi-stage charge pumps by reducing the amount of voltage lost across the inter-stage transfer switches of the pump through use a selective body bias. The voltage level from both branches of one stage is each supplied though a corresponding diode to the bulk connection of the transfer switch after the subsequent stage in both branches. This arrangement results in each stage providing a largely uniform amount of gain, without the usual increase of voltage drop with increasing numbers of stages.