Patent ID: 8476842
Filing Date: 2013-07-02
Classification: H05B,Y02B

Abstract:
1. A driving device for a light-emitting diode (LED) module, comprising: a voltage converting unit, coupled to the LED module, for receiving a switching signal and producing a driving voltage according to the switching signal to drive the LED module; a LED module voltage detecting unit, coupled to the LED module, for detecting the driving voltage on the LED module, and performing a voltage-dividing operation according to the driving voltage to produce a comparison voltage; and a switching signal generation unit, coupled to the voltage converting unit and the LED module voltage detecting unit, and the switching signal generation unit has a fault detection pin for receiving the comparison voltage, wherein the switching signal generation unit compares a reference voltage and the comparison voltage to enable or disable the switching signal, and 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.