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:
Apr. 02, 2019
Filed:
Nov. 30, 2016
The Regents of the University of Michigan, Ann Arbor, MI (US);
Khalil Najafi, Ann Arbor, MI (US);
Rebecca L. Peterson, Ann Arbor, MI (US);
James John McCullagh, Ann Arbor, MI (US);
The Regents of The University of Michigan, Ann Arbor, MI (US);
Abstract
A charge pump with low-voltage startup is presented. The charge pump circuit is comprised of transistor pairs arranged in stages, where the charge pump circuit is configured to receive an input voltage and generate an output voltage whose magnitude is larger than magnitude of the input voltage. An energy storage device is configured to receive and store voltage from the charge pump circuit. A switching circuit is interfaced with the control terminals of the transistors in the charge pump circuit. In response to leakage current through the transistors in the charge pump circuit, the switching circuit switches on select transistors in the charge pump circuit while voltage stored by the energy storage device is below threshold voltage of the transistors in the charge pump circuit.