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:
Sep. 30, 2014
Filed:
Oct. 20, 2011
Hans W. Klein, Pleasanton, CA (US);
Kevin Gallagher, Whiterock, Midleton, IE;
Daniel O'keeffe, Whitechurch, IE;
Denis Ellis, Patrickswell, IE;
Bruce Byrkett, Preston, WA (US);
Hans W. Klein, Pleasanton, CA (US);
Kevin Gallagher, Whiterock, Midleton, IE;
Daniel O'Keeffe, Whitechurch, IE;
Denis Ellis, Patrickswell, IE;
Bruce Byrkett, Preston, WA (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A circuit for generating a voltage is disclosed. The voltage has an amplitude greater than an available power supply. The circuit includes a driver to supply the voltage on an output terminal to an electrode of a touch sense array. The circuit also includes a charge pump array coupled to the driver. The charge pump array includes an array of charge pumps to supply an input voltage to the driver. The circuit also includes a feedback circuit coupled to the charge pump array. The feedback circuit is configured to measure the input voltage and to select different combinations of the array of charge pumps to maintain the voltage on the output terminal.