Light-emitting component driving device and driving method thereof
A technology for light-emitting elements and driving devices, applied in electrical components, lighting devices, circuit devices, etc., can solve problems such as low efficiency and inability to further improve efficiency.
Inactive Publication Date: 2019-11-12
DELTA ELECTRONICS INC
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Problems solved by technology
In the prior art, when the LED is connected to a DC voltage source for operation, the LED operating current is adjusted by connecting a resistor in series. The advantage of this circuit is that the circuit is simple, and the disadvantage is that the efficiency is low
Another prior art uses a power converter to adjust the LED current, which has the advantage of higher efficiency than the aforementioned series resistor, but since the LED load completely passes through the power converter, and if it is connected to the AC mains application, coupled with the first-level power factor correction circuit, under the second-level circuit architecture, the overall efficiency of the system still cannot be further improved
Method used
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[0036] A number of implementations of the present disclosure will be disclosed below with drawings, and for the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some conventional structures and components will be shown in a simple schematic way in the drawings.
[0037] Herein, when an element is referred to as "connected" or "coupled", it may mean "electrically connected" or "electrically coupled". "Connected" or "coupled" may also be used to indicate that two or more elements operate or interact with each other. In addition, although terms such as "first", "second", ... etc. are used herein to describe different elements, these terms are only used to distinguish elements or...
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The invention relates to a light-emitting component driving device. The light-emitting component driving device comprises an energy storage component, a power supply and a power conversion circuit, wherein the power supply is electrically connected to the energy storage component by the light-emitting component and is used for providing a current to the light-emitting component and charging the energy storage component, the power conversion circuit is electrically connected to the power supply and the energy storage component, an inductor is contained in the power conversion circuit, the energy storage component is used for charging the inductor when the power conversion circuit is in a first operation state, and the inductor is discharged to the power supply when the power conversion circuit is in a second operation state. The invention also relates to a method for driving the light-emitting component.
Description
technical field [0001] The disclosure relates to a driving device, especially a high-efficiency conversion device for processing part of the load energy to drive a light-emitting element driving device. Background technique [0002] Light-emitting diodes (Light-emitting diodes, LEDs) are current-driven light-emitting devices, which mainly adjust the brightness of light by controlling the current flowing through the LEDs. In the prior art, when the LED is connected to a DC voltage source for operation, the working current of the LED is adjusted by connecting a resistor in series. The advantage of this circuit is that the circuit is simple, and the disadvantage is that the efficiency is low. Another prior art uses a power converter to adjust the LED current, which has the advantage of higher efficiency than the aforementioned series resistor, but since the LED load completely passes through the power converter, and if it is connected to the AC mains application, coupled with ...
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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/3725H02M3/156H02J7/0068H02J7/345H02J7/06
Inventor 周清和艾祖华
Owner DELTA ELECTRONICS INC