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:
Oct. 17, 2017
Filed:
Apr. 15, 2016
Applicant:
Dialog Semiconductor (Uk) Limited, London, GB;
Inventor:
Guillaume de Cremoux, Edinburgh, GB;
Assignee:
Dialog Semiconductor (UK) Limited, London, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/156 (2006.01); H02M 3/157 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/157 (2013.01); H02M 2001/0025 (2013.01);
Abstract
The present disclosure applies to peak current limitation and also to ensuring that a minimum current condition is not exceeded, that is, that the current through a component remains at or above a desired minimum level. A current limitation circuit compensates for time-induced errors by sampling and holding a current or voltage value at the time when a power switch changes state, deriving a rate of change of the electrical parameter and extrapolating the value over time. The extrapolated value is used for subsequent post-processing such as duty cycle modification of a switching mode DC-DC converter.