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:
Feb. 13, 2007
Filed:
Nov. 05, 2004
Osama Khouri, Milan, IT;
Giancarlo Ragone, Reggio Calabria, IT;
Osama Khouri, Milan, IT;
Giancarlo Ragone, Reggio Calabria, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A circuit for converting a direct current input voltage into an output voltage greater than the input voltage. The circuit includes a charge pump and a block for generating pulse signals of a predetermined frequency to be applied to a control input of the charge pump. The settling time, i.e. the time necessary for the output voltage to attain its operating value and to maintain it with a given precision, is reduced by providing the circuit with charge injection control via modulation of the duty cycle of the pulse signals as a function of the difference between the output voltage, or a predetermined fraction thereof, and a predetermined reference voltage and in such a manner as to reduce the settling time as the difference diminishes. The circuit includes a regulator that controls the charge pump based upon the predetermined reference voltage.