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. 12, 2015
Filed:
Oct. 18, 2013
Beyond Innovation Technology Co., Ltd., Taipei, TW;
Beyond Innovation Technology Co., Ltd., Taipei, TW;
Abstract
A load driving apparatus and a driving method thereof are provided. The load driving apparatus includes a power conversion circuit and a control chip. The power conversion circuit receives a DC input voltage, and drives an LED load in response to a gate PWM signal. The control chip is configured to: provide the gate PWM signal having a first preset duty cycle during a light operation period of a dimming operation, so that the LED load is fully turned on; and provide the gate PWM signal having a second preset duty cycle during a dark operation period of the dimming operation, so that the LED load is slightly turned on. The second preset duty cycle is far less than the first preset duty cycle. A current of the LED load during the light operation period is far more than a current of the LED load during the dark operation period.