LED drive control circuit
A technology for LED driving and control circuits, which is applied to the layout of electric lamp circuits, electric light sources, lighting devices, etc., can solve the problems of complex circuits, high costs, and easy damage, and achieve the effect of simple circuit structure, high cost efficiency, and low cost
Inactive Publication Date: 2014-02-12
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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Problems solved by technology
At present, DC-DC chopping technology is used to drive LED in low-voltage places. It has the advantages of low power consumption, high efficiency, stability and reliability, small size per unit power, light weight, etc., but its cost is high, the circuit is complicated, and easy to use. Damage, strong high-frequency interference and other shortcomings, which bring inconvenience to users
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[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0014] In the embodiment of the present invention, a constant current integrated chip is used in the LED drive control circuit, and the operation of the constant current integrated chip is controlled by a single chip microcomputer.
[0015] figure 1 The structure of the LED drive control circuit provided by the embodiment of the present invention is shown, and for the convenience of description, only the part related to this embodiment is shown.
[0016] refer to figure 1 , The LED drive control circuit includes a single-chip microcomputer U1, a MOS tube Q1, a triode Q2, a constant current integr...
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The invention provides an LED drive control circuit, which is applicable to the field of lighting circuits. The LED drive control circuit comprises a singlechip, a triode, a metal oxide semiconductor (MOS) transistor, a constant current integrated chip and an energy storage inductor, wherein the singlechip is connected with the two ends of a power supply; a base electrode of the triode is connected with the singlechip, while an emitting electrode is connected with the negative electrode of the power supply; the triode is turned on or off under the control of the singlechip; the gate of the MOS transistor is connected with the collector of the triode through a voltage division resistor R1, while the source is connected with the positive electrode of the power supply; the power end of the constant current integrated chip is connected with the drain of the MOS transistor, while the feedback end is connected with the LED for sampling the current; and the energy storage inductor is connected between the output end of the constant current integrated chip and the LED. The LED drive control circuit provided by the invention is realized by using the constant current integrated chip of low cost and high efficiency so as to ensure stable and reliable work of the LED; and the entire circuit has a very simple structure.
Description
technical field [0001] The invention belongs to the field of lighting circuits, in particular to an LED driving control circuit. Background technique [0002] With the continuous development of science and technology, new products and new technologies are constantly innovating. As a new type of light source, LED has the characteristics of energy saving, environmental protection and high efficiency. There are also various LED drive circuits. At present, DC-DC chopping technology is used to drive LED in low-voltage places. It has the advantages of low power consumption, high efficiency, stability and reliability, small size per unit power, light weight, etc., but its cost is high, the circuit is complicated, and easy to use. Damage, strong high-frequency interference and other shortcomings have brought inconvenience to users. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide an LED driving control circuit, aiming to sa...
Claims
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IPC IPC(8): H05B37/02
Inventor 周明杰孙占民
Owner OCEANS KING LIGHTING SCI&TECH CO LTD