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Blue-ray LED driving system with adjustable brightness

A LED drive and blue light technology, applied in the field of electronic energy saving, can solve the problems of poor anti-electromagnetic interference ability, unstable driving, poor brightness adjustment accuracy, etc., to improve load capacity, improve anti-electromagnetic interference ability, and ensure stability Effect

Inactive Publication Date: 2016-09-07
CHENGDU JIESHENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of poor anti-electromagnetic interference, unstable driving, and poor brightness adjustment accuracy in the LED drive system in the prior art, and provide a blue LED drive system with adjustable brightness

Method used

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Embodiment

[0022] Such as figure 1 As shown, the present invention is mainly composed of a control chip U, a dimming control circuit, a reference correction circuit, a slope compensation circuit, and a logic buffer circuit. The reference correction circuit is composed of triode VT1, triode VT2, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, polar capacitor C1, polar capacitor C2, polar capacitor C3, inductor L, diode D1, and diode D2 composition.

[0023] When connected, the P pole of the diode D2 is connected to the base of the transistor VT1, and the N pole is connected to the base of the transistor VT2. The P pole of the diode D1 is connected to the collector of the triode VT1, and the N pole is connected to the base of the triode VT2 through the resistor R2 and the resistor R1 in sequence. The anode of the polarity capacitor C1 is connected to the base of the transistor VT2 after passing through the inductor L, and the cathode is connected to the N pole of the dio...

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PUM

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Abstract

The invention discloses a blue-ray LED driving system with adjustable brightness, characterized by mainly comprising a control chip U, and a light adjustment control circuit, a reference correction circuit, a slope compensation circuit and a logic buffer circuit which are connected with the control chip U; the reference correction circuit is connected with the logic buffer circuit; and the light adjustment circuit is connected with the logic buffer circuit. The system provided by the invention can eliminate or attenuate external electromagnetic interference, and locks voltage and current for limitation, thus the voltage and current keep steady; and when in actual use, the anti-electromagnetic interference capability of the system is improved by more than 1.5 times over the existing driving system, can output stable driving current, meanwhile can accurately adjust the brightness of an LED light, and can effectively ensure the stability of the brightness of the blue-ray LED light. Meanwhile, the load capacity of the system provided by the invention can be effectively enhanced.

Description

technical field [0001] The invention relates to the field of electronic energy saving, in particular to a blue LED drive system with adjustable brightness. Background technique [0002] As a new type of energy-saving light source, LED lights have been widely accepted and adopted by people due to their environmental protection, energy saving, long life, and small size. Since LED is a semiconductor device with sensitive characteristics and has negative temperature characteristics, the driving system of LED plays a very important role in the stable and reliable working state of LED in the application process. [0003] With the continuous improvement of people's living standards, there are higher requirements for the energy consumption of the brightness of LED lights, whether at home or in stores, that is, people need to further improve the brightness of LED lights while requiring LED lights to have lower energy consumption. consumption. Therefore, people put forward higher re...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/10
Inventor 雷明方
Owner CHENGDU JIESHENG TECH CO LTD
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