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:
May. 26, 2015
Filed:
Jul. 19, 2013
Beyond Innovation Technology Co., Ltd., Taipei, TW;
Beyond Innovation Technology Co., Ltd., Taipei, TW;
Abstract
A load driving apparatus related to light emitting diodes (LED) is provided. The load driving apparatus includes a power conversion circuit, a complex function circuit, and a control chip. The power conversion circuit receives a DC input voltage and provides a DC output voltage to at least one LED string in response to a gate pulse-width-modulation (PWM) signal. The complex function circuit is serially connected with the LED string and provides a short-protection mechanism. The control chip is coupled to the power conversion circuit and the complex function circuit. The control chip generates the gate PWM signal to control the operation of the power conversion circuit, and when the LED string is short-circuited, the control chip controls the complex function circuit to activate the short-protection mechanism, so as to protect the load driving apparatus from being damaged.