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. 11, 2014
Filed:
Nov. 21, 2012
Himax Analogic, Inc., Tainan, TW;
Hang-Yu Fan, Tainan, TW;
Himax Analogic, Inc., Tainan, TW;
Abstract
An illumination driving circuit for driving a light-emitting load includes a system voltage source, a switch component, an inductor component, an inductor-current sensing module and a control module. The switch component is coupled between the system voltage source and the light-emitting load. The inductor component is connected in series between the system voltage source and the light-emitting load. The inductor-current sensing module includes a sensing resistor component connected in series between the switch component and the inductor component. The control module is configured for controlling the conductive state of the switch component. An inductor-current sensing terminal of the controlling module is coupled to a node between the sensing resistor component and the switch component. The control module calculates an inductor-current through the inductor component according to a voltage level on the inductor-current sensing terminal.