Patent ID: 9000677
Filing Date: 2015-04-07
Classification: H05B,Y02B

Abstract:
1. A light emitting diode driving apparatus, comprising: a power supplying unit converting input power into driving power according to control and supplying the converted driving power to a light emitting diode channel; a driving unit controlling current flowing in the light emitting diode channel according to a pulse width modulation (PWM) dimming signal from the outside; and a controlling unit comparing a reference level set by a duty of the PWM dimming signal with a detection voltage level of the light emitting diode channel and controlling a power converting operation of the power supplying unit according to the comparison result, wherein the controlling unit includes: wherein the light emitting diode channel comprises a plurality of light emitting diode channels connected to each other in parallel, wherein the driving unit includes a plurality of drivers corresponding to the plurality of light emitting diode channels, respectively, and wherein each of the plurality of drivers includes: