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:
Nov. 26, 2019
Filed:
Dec. 20, 2018
Dialog Semiconductor (Uk) Limited, London, GB;
Thomas Jackum, Gleisdorf, AT;
Walter Meusburger, Graz, AT;
Dialog Semiconductor (UK) Limited, London, GB;
Abstract
A circuit and a method using a pass device that is coupled between a supply voltage level and a load-connectable node of the circuit for providing a load current. A sense device forms a current mirror with the pass device. The sense device has transistor devices that can be switched to an active state, to adjust a mirror ratio of the current mirror. A first feedback loop regulates a voltage drop across the pass device to a predetermined value. A second feedback loop regulates a voltage drop across the sense device to the voltage drop across the pass device. Measurement circuitry sets a mirror ratio of the current mirror based on an indication of a current flowing through the sense device and generates an indication of current flowing through the pass device based on the set mirror ratio and the indication of the current flowing through the sense device.