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High-power LED high-voltage constant-current driving module

A driving module and high-voltage technology, which is applied to the layout of electric lamp circuits, electric light sources, lighting devices, etc., can solve the problems of scrapping the entire light bar, increasing production and repair costs, and damage to LED Zener diodes, so as to reduce LED Packaging cost, improving LED packaging yield, and realizing the effect of generalization

Inactive Publication Date: 2014-03-05
江苏设计谷科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

The traditional LED has a zener diode, and the impedance of the zener diode is about 0.25 times the impedance of the LED crystal element. Therefore, in the case of instantaneous high voltage or current, the zener diode is easily broken down and burned, thus Causes damage to the LED chip, eventually leading to problems such as LED dead light, short circuit, open circuit, etc.
[0011] Solid traditional LED with zener diode anti-ESD technology has encountered new problems in large-size backlight applications: instantaneous high current and high voltage will cause a certain degree of damage to LED zener diodes, resulting in LED failure
If the internal anti-ESD zener diode of the LED is burned or the external reverse static electricity is damaged under the condition of instantaneous high voltage or current during driving, it will cause the entire light bar to fail, thus causing the entire light bar to be scrapped, increasing production and use repair cost

Method used

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Embodiment Construction

[0027] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the embodiments and accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0028] A high-power LED high-voltage constant-current drive module, including a plurality of parallel-connected single light bars, the single light bar is composed of several LED lights in series; the several LED lights of each single light bar are connected with an external After the nanodiode is connected in parallel, it is connected in series with an independent driving module. The voltage of the independent driving module is 22-26 volts, and the maximum passing current is 300mA.

[0029] Implementation of external anti-ESD zener diode: remove the zener diode used in the packaging process of medium and high power LEDs, such as figure 2 , duri...

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Abstract

The invention discloses a high-power LED high-voltage constant-current driving module which comprises a plurality of parallel-connecting single lamp strips. The single lamp strips comprise a plurality of LED lamps in a series mode. The LED lamps of each single lamp strip are connected in parallel with an external zener diode and then are connected in series with an independent driving module. The concept that the zener diode is externally arranged solves the problems of non-reworking performance caused by an internal traditional LED anti-static zener diode and non-reworking performance after secondary optical lens using at middle-high power. Accordingly, LED production is easy, cost is lowered, lamp strip maintaining is easy, single lamp strip independent driving is achieved, power supply manufacturing is easy, and universalization is achieved.

Description

[0001] technical field [0002] The invention relates to the field of LED applications, in particular to a high-power LED high-voltage constant-current drive module. Background technique [0003] With the maturity and stability of white LED technology, white light strips with white LEDs as the main components have been widely used in small and medium-sized backlights. The research and development of new LED wafer technology and the improvement and innovation of packaging technology have continuously improved the light efficiency of LED, and its heat generation and heat conduction problems have also been well solved. Therefore, medium and high power LEDs are widely used in medium and large size backlights. As far as the current situation is concerned, it has basically replaced the traditional CCFL technology. In the process of application, the traditional method of LED anti-ESD: internal packaging Zener diode technology is also used in medium and high power LEDs. [0004] I...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 孙勇邹宇张洋邹宝华张小勇
Owner 江苏设计谷科技有限公司
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