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. 28, 2002
Filed:
Mar. 06, 2001
Giulio Corva, Valdagno, IT;
Alessandro Camera, Savona, IT;
Ignazio Bellomo, Ponte Sesto Rozzano, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
The invention relates to a control circuit for a hysteretic switching voltage regulator, which comprises a logic circuit driving an output stage; a hysteresis comparator comparing the voltage value at the output of the regulator with a reference voltage; a current sensor for sensing, through a comparator, the current drain of a load connected to the output of the regulator. This control circuit further comprises a device for adjusting the hysteresis range of the hysteresis comparator, and a hysteresis frequency sensing and controlling logic portion connected to the output of the hysteresis comparator, the logic portion acting on the frequency adjusting device.