LED flow equalizing control circuit, LED driver module and navigation aiding light

A drive module, flow control technology, applied in the field of lighting, can solve problems such as reduced efficiency and different tube pressure drops

Inactive Publication Date: 2010-07-14
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you use a series circuit or a series-parallel connection, you need to boost the voltage, resulting in a decrease in efficiency; if you use a parallel circuit, you must ensure that the current flowing through the LEDs of each LED branch is the

Method used

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  • LED flow equalizing control circuit, LED driver module and navigation aiding light
  • LED flow equalizing control circuit, LED driver module and navigation aiding light
  • LED flow equalizing control circuit, LED driver module and navigation aiding light

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Embodiment Construction

[0012] Aiming at the defect in the prior art that when multiple LED branches are connected in parallel, the current of each LED branch is not equal, a LED current sharing control circuit is provided, which can sample the current of each LED branch, and according to the sampled The current of each LED branch adjusts the current of each LED branch uniformly, so that the LED branch emits light evenly, and the current on each branch is nearly equal.

[0013] The basic technical solution of the LED current sharing control circuit in the embodiment of the present invention is: among multiple LED branches connected in parallel, each LED branch is provided with an LED current sharing control circuit. The LED current sharing control circuit includes a switching tube, a sampling resistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a current sharing resistor and a first three-terminal adjustable shunt reference source, and the switching tub...

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Abstract

The invention relates to an LED flow equalizing control circuit, an LED driver module and a navigation aiding light. The LED driver module comprises a plurality of LED branches connected in parallel, each LED branch comprises an LED flow equalizing control circuit, the LED flow equalizing control circuit is used for sampling the current of each LED branch and rectifying the current of each LED branch to be uniform according to the sampled current of each LED branch. The implementation of the LED flow equalizing control circuit, the LED driver module and the navigation aiding light can dynamically regulate the currents of multiple LED branches, so that the current of each LED branch can be maintained uniform.

Description

technical field [0001] The invention relates to the technical field of illumination, and more specifically, relates to an LED current sharing control circuit, an LED driving module and a navigation light. Background technique [0002] With the progress of science and technology and the implementation of energy saving and environmental protection, LED has been widely used in signal indication, especially the application of navigation lights, but because LED is a voltage type device, a small voltage change will cause a large current change, and The luminous brightness has a great relationship with the passing current. The change of the current will cause the change of the luminance. Therefore, when using it as a surface light source, the uniformity of LED light emission must be considered, that is, the current passing through each LED must be nearly equal. [0003] At present, when LEDs are used as surface light sources, the general circuit structure is series, parallel, and s...

Claims

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Application Information

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IPC IPC(8): H05B37/02F21S8/00F21V23/00F21W111/00F21Y101/02
Inventor 周明杰谭威陈永伦
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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