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. 22, 2011
Filed:
Sep. 21, 2005
Pieter Blanken, Eindhoven, NL;
Pieter Blanken, Eindhoven, NL;
ST-Ericsson SA, Geneva, CH;
Abstract
A current-mode controlled DC/DC converter receives an input voltage (Vb) and supplies an output voltage (Vo). A controllable switch (S) is coupled to an inductor (L) to obtain a periodically varying inductor current (IL) through the inductor (L). A current-mode controller () compares () the output voltage (Vo) with a reference voltage (Ver) to Obtain an error signal (ER), and applies () a transfer function on the error signal (ER) to obtain a control signal (CO; CIO). A correction circuit () adds to the control signal (CO; ICO) a correction signal (ICR) representative for a difference between an original value of the control signal (CO; ICO) and an average value of the inductor current (IL) to obtain a modified control signal (MCO; IMC). A drive circuit () compares () a sensed signal (SE) being representative for the inductor current (IL) with the modified control signal (MCO; ICO) to switch off () the controllable switch (S) when a level of the sensed signal (SE) reaches a level of the modified control signal (MCO; ICO).