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:
May. 29, 2012
Filed:
Dec. 13, 2010
Paul G. Damitio, Tucson, AZ (US);
Xavier P. Ramus, Tucson, AZ (US);
He Qing, Tucson, AZ (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Amplifier circuitry () includes a driver amplifier () and an integrator amplifier (A) producing an output signal (V) that controls a pass transistor (Q) coupled to a pump capacitor (C). Input circuitry () controls the direction of ramping of the output signal during a first interval to boost a supply voltage (V) of the driver amplifier via the pump capacitor, and also controls the direction of ramping to recharge the pump capacitor following a second interval. In one embodiment, pump capacitor recharging circuitry (Q,R,I) completes the recharging of the pump capacitor following the second interval after it has been partially recharged by the integrator amplifier.