Light emitting apparatus and control method therefor

摘要

A light emitting apparatus and control method are provided. The light-emitting apparatus includes a light emitting part (120); a power supplying part (110); a switching part (130) which is serially coupled to the light emitting part (120); and a control part (160) which compares a switch voltage level with a comparison level, and controls the power supplying part (110) to supply the driving power having a voltage level decreased by a reference level if the switch voltage level is higher than the comparison level. The control method includes supplying a driving power to the light emitting part (120); emitting light; measuring a switch voltage level across the switching part (130), and decreasing a voltage level of the driving power by a reference level if the switch voltage level is higher than the comparison level.