LIGHT EMITTING DIODE DRIVING APPARATUS
First Claim
1. A light emitting diode driving apparatus comprising:
- a reference voltage generating unit generating a reference voltage set based on input power and a switching signal for supplying driving power to a light emitting diode; and
a driving unit supplying the driving power to the light emitting diode according to the reference voltage.
6 Assignments
0 Petitions
Accused Products
Abstract
There is provided a light emitting diode driving apparatus capable of supplying a constant average current to a light emitting diode by generating a reference voltage used for driving the light emitting diode according to input power and a switching signal switching a path of a current supplied to the light emitting diode. The light emitting diode driving apparatus includes: a reference voltage generating unit generating a reference voltage set based on input power and a switching signal for supplying driving power to a light emitting diode; and a driving unit supplying the driving power to the light emitting diode according to the reference voltage.
6 Citations
12 Claims
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1. A light emitting diode driving apparatus comprising:
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a reference voltage generating unit generating a reference voltage set based on input power and a switching signal for supplying driving power to a light emitting diode; and a driving unit supplying the driving power to the light emitting diode according to the reference voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A light emitting diode driving apparatus comprising:
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a rectifying unit rectifying alternating current (AC) power; a reference voltage generating unit generating a reference voltage set based on input power from the rectifying unit and a switching signal for supplying driving power to a light emitting diode; a driving unit controlling the switching of the input power according to the reference voltage to supply the driving power to the light emitting diode; and a transformer having a primary winding receiving the input power, a secondary winding electromagnetically coupled to the primary winding according to a preset turns ratio, receiving induced power, and providing the driving power to the light emitting diode, and an auxiliary winding formed together with the primary winding on a primary side and receiving the driving power induced from the secondary winding. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification