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. 25, 2014
Filed:
Mar. 22, 2010
Rohit Arora, Salford, GB;
Alan James Dodd, Bolton, GB;
Craig Maurice Taylor, Oldham, GB;
Diodes Zetex Semiconductors Limited, Oldham, GB;
Abstract
A switching regulator (-) supplies a controllable stable average current to a load (), such as series-connected light emitting diodes. A regulator controller () includes a hysteretic comparator () which controls a switch in the form of a transistor () for switching current into an inductor (). The comparator () has upper and lower thresholds. A first circuit comprising a fast current monitor () supplies a first signal to the comparator representing the instantaneous current in the inductor (). A second circuit (, and) supplies a second signal to the comparator representing an error between a desired regulator output and an actual regulator output.