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:
Jul. 02, 2013
Filed:
Dec. 08, 2010
Chao-hsuan Chuang, Hsinchu County, TW;
Hung-che Chou, Hsinchu County, TW;
Sheng-chieh Wu, Hsinchu County, TW;
Pao-chuan Lin, Hsinchu County, TW;
Chao-Hsuan Chuang, Hsinchu County, TW;
Hung-Che Chou, Hsinchu County, TW;
Sheng-Chieh Wu, Hsinchu County, TW;
Pao-Chuan Lin, Hsinchu County, TW;
Excelliance MOS Corporation, Hsinchu County, TW;
Abstract
A driving device for a LED module is provided. The driving device for the LED module includes a voltage converting unit, a LED module voltage detecting unit, and a switching signal generation unit. The voltage converting unit produces a driving voltage to drive the LED module according to a switching signal. The LED module voltage detecting unit divides the driving voltage to produce a comparison voltage. The switching signal generation unit receives the comparison voltage by a fault detection pin and compares a reference voltage and the comparison voltage to enable or disable the switching signal. After the switching signal is disabled, the switching signal generation unit further pulls up a voltage level of the fault detection pin to a logic high level voltage, so as to produce a fault notification signal to let the fault detection pin also have a function for fault notification.