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:
Jul. 23, 2013
Filed:
Sep. 21, 2005
Roland Albert Bertha Antheunis, Nijmegen, NL;
Insun Van Loo, Nijmegen, NL;
Robert Gerrit Hulshof, Nijmegen, NL;
Roland Albert Bertha Antheunis, Nijmegen, NL;
Insun Van Loo, Nijmegen, NL;
Robert Gerrit Hulshof, Nijmegen, NL;
ST-Ericsson SA, Plan-les-Ouates, CH;
Abstract
The present invention relates to a charging circuit and method for generating a charging current supplied to an output terminal () to which a battery () to be charged is connected. The charging current is indirectly sensed to generate a sensing current having a predetermined relation to the charging current. This sensing current is then compared to a generated predetermined reference current, wherein the charging current is controlled in response to the result of the comparison. Thereby, accuracy, system costs and power efficiency can be increased as a low-ohmic precision resistor is no longer required in the charge current branch of the circuit. Furthermore, the proposed solution enables a simple implementation of the circuit as an integrated circuit.