Method for controlling illuminative high-power LED

A control method and high-power technology, which are applied in the field of high-power LED control for lighting, can solve the problem that the electrical parameters and temperature coefficients of LED integrated circuits are not completely consistent, restrict the popularization and application of high-power LED integrated circuits, and uneven current distribution in integrated circuits, etc. problems, to achieve a wide range of industrial use value, control method or function improvement, improve stability and service life effect
CN101557668AInactive Publication Date: 2009-10-14陈有欣
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
陈有欣
Publication Date
2009-10-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for controlling an illuminative high-power LED, in particular to a method for managing a plurality of single-LEDs in groups. The method comprises the steps of: carrying out current sharing control and leading a group of single-LEDs with current greater than that of other groups of single-LEDs to distribute current to other groups of single-LEDs. The method for controlling the illuminative high-power LED can regulate work current in a unified manner, keep constant state and equal distribution of the work current, and guarantee uniformity between electrical parameter and temperature coefficient of the single-LED so as to effectively enhance stability and service life of the illuminative high-power LED.
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Description

technical field

[0001] The invention relates to an LED control method, in particular to a high-power LED control method for lighting. Background technique

[0002] LED lighting equipment has been more and more widely used in recent years due to its advantages of low heat generation and low power consumption. At present, the common high-power LED integrated circuits for lighting in the market adopt a square array structure with multiple groups connected in parallel, and centrally drive and control the electrical parameters and temperature coefficients of multiple LED monomers inside the integrated circuit. The temperature coefficient of LED is very large. Usually, the temperature coefficient of a single LED is -2mv / °C. That is to say, the temperature coefficient of a 10-string LED monomer group is -20mv / °C. The turn-on voltage of the body group will be reduced by 1v, and under the condition of constant supply voltage, the turn-on voltage of the LED will be reduced by 1v, whi...

Claims

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