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. 15, 2009
Filed:
Mar. 18, 2008
Ryan Andrew Jurasek, S. Burlington, VT (US);
Bret Roberts Dale, Jericho, VT (US);
Darin James Daudelin, Williston, VT (US);
Dave Eugene Chapmen, Shelburne, VT (US);
Ryan Andrew Jurasek, S. Burlington, VT (US);
Bret Roberts Dale, Jericho, VT (US);
Darin James Daudelin, Williston, VT (US);
Dave Eugene Chapmen, Shelburne, VT (US);
Nanya Technology Corp., Kueishan, Tao-Yuan Hsien, TW;
Abstract
A dynamic voltage pump circuit includes a first stage voltage pump, a second stage voltage pump, a limiter, and a comparator. The first stage voltage pump generates an intermediate supply voltage according to an input supply voltage and a pump signal. The second stage voltage pump generates an output supply voltage according to the intermediate supply voltage, the pump signal, and an enable signal; the second stage voltage pump is enabled and disabled when the enable signal is asserted and de-asserted, respectively. The limiter controls the pump signal according to a comparison of the output supply voltage with a first reference voltage. The comparator compares the first reference voltage with a second reference voltage to generate the enable signal, and can assert the enable signal when the desired output supply voltage exceeds the maximum possible intermediate supply voltage generated by the first stage voltage pump.