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. 25, 2012
Filed:
Jul. 24, 2009
Khin Htoo, San Jose, CA (US);
Feng Pan, Fremont, CA (US);
Byungki Woo, San Jose, CA (US);
Trung Pham, Fremont, CA (US);
Yuxin Wang, Sunnyvale, CA (US);
Khin Htoo, San Jose, CA (US);
Feng Pan, Fremont, CA (US);
Byungki Woo, San Jose, CA (US);
Trung Pham, Fremont, CA (US);
Yuxin Wang, Sunnyvale, CA (US);
SanDisk Technologies Inc., Plano, TX (US);
Abstract
A charge pump circuit for generating an output voltage is described. Charge pump circuits typically have two branches. As the clocks supplying the branches of a charge pump circuit alternate, the output of each branch will alternately provide an output voltage, which are then combined to form the pump output. The techniques described here allow charge to be transferred between the two branches, so that as the capacitor of one branch discharges, it is used to charge up the capacitor in the other branch. An exemplary embodiment using a voltage doubler-type of circuit, with the charge transfer between the branches accomplished using a switch controller by a boosted version of the clock signal, which is provided by a one-sided voltage doubler.