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:
Jan. 05, 2016
Filed:
Jan. 09, 2012
Richard K. Williams, Cupertino, CA (US);
Kevin D'angelo, Santa Clara, CA (US);
David A. Brown, San Jose, CA (US);
George A. Hariman, Sunnyvale, CA (US);
Richard K. Williams, Cupertino, CA (US);
Kevin D'Angelo, Santa Clara, CA (US);
David A. Brown, San Jose, CA (US);
George A. Hariman, Sunnyvale, CA (US);
ADVANCED ANALOGIC TECHNOLOGIES, INC., Santa Clara, CA (US);
Abstract
A distributed system for driving strings of series-connected LEDs for backlighting, display and lighting applications includes multiple intelligent satellite LED driver ICs connected to a an interface IC via serial bus. The interface IC translates information obtained from a host microcontroller into instructions for the satellite LED driver ICs pertaining to such parameters as duty factor, current levels, phase delay and fault settings. Fault conditions in the LED driver ICs can be transmitted back to the interface IC. An analog current sense feedback system which also links the LED driver ICs determines the supply voltage for the LED strings.