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Light-emitting diode (LED) driver for illumination

An LED driver and transformer technology, applied in the field of LED drivers for lighting, can solve the problems of inability to adjust the output current, inability to guarantee the power factor and working efficiency of the driver, inability to realize constant current driving, etc. Loss-enhancing effect

Inactive Publication Date: 2012-01-25
INST OF AUTOMATION CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, LED drivers using constant current drive mode, such as patent CN200910098882.9, cannot adjust the output current, cannot realize constant current drive, and cannot guarantee the power factor and work efficiency of the driver

Method used

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  • Light-emitting diode (LED) driver for illumination
  • Light-emitting diode (LED) driver for illumination
  • Light-emitting diode (LED) driver for illumination

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. While illustrations of parameters including particular values ​​may be provided herein, it should be understood that parameters need not be exactly equal to the corresponding values, but rather may approximate the values ​​within acceptable error margins or design constraints.

[0033] The present invention is an LED driver for lighting, and its overall structure is mainly composed of two functional modules: an AC / DC (alternating current / direct current conversion) module and a constant current control module. The main function of AC / DC is to convert AC mains power into low-voltage direct current that can be used to drive constant current modules. The main function of the constant current control module is to provide a const...

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Abstract

The invention discloses a light-emitting diode (LED) driver for illumination. The LED driver for the illumination comprises an alternating current (AC) / direct current (DC) module and a constant current control module, wherein the AC / DC module adopts an LLC resonant conversion topological structure, and is used for converting alternating current commercial power into direct current; and the constant current control module is connected with the AC / DC module and used for outputting constant current by taking low-voltage direct current as driving voltage to drive an LED light source by the constant current. The LED driver for the illumination can realize the constant current driving of LEDs for the illumination, and simultaneously ensures the safety and reliability of the LEDs.

Description

technical field [0001] The invention relates to the technical field of semiconductor lighting in the electronics industry, in particular to an LED driver for lighting. Background technique [0002] White light LED is called "the new light source of the 21st century" because of its long life, energy saving and other outstanding advantages. In addition, because of its long life, short start-up time, no ultraviolet rays, rich and full colors, and low-voltage safety, it is especially suitable for large-scale lighting. Power lighting field. [0003] Through the investigation and analysis of high-power LED drive products in the domestic market, it is found that most of the high-power LED drive products are driven by constant voltage mode. output voltage. [0004] According to the characteristics of LED drive, the ideal LED drive mode is constant current drive. This drive mode has two advantages: first, avoid driving current exceeding the maximum rated value, which will affect it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 台宪青王艳军孙常东武宁
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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