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LED (Light Emitting Diode) power system and LED driving device thereof

A technology of LED drive and LED power supply, applied in the field of LED lighting, can solve the problems of low efficiency, achieve good compatibility and improve efficiency

Active Publication Date: 2016-08-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-efficiency LED power supply system and its LED driving device for the above-mentioned low efficiency defects of the prior art

Method used

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  • LED (Light Emitting Diode) power system and LED driving device thereof
  • LED (Light Emitting Diode) power system and LED driving device thereof
  • LED (Light Emitting Diode) power system and LED driving device thereof

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Embodiment Construction

[0040] figure 1 It is a logical structure diagram of Embodiment 1 of the LED power supply system of the present invention. The LED power supply system of this embodiment includes an LED driving device 100 and an LED light source 200. It should be noted that although only one LED light source 200 and its corresponding It should be understood that in practical applications, for example, LED light sources and their corresponding LED driving devices can be respectively installed in living room, dining room, bedroom and other places in the home. In this embodiment, the LED light source 200 includes a red LED light string 210 , a green LED light string 220 , and a blue LED light string 230 . The LED driving device 100 includes a control module 110, a first power management module 121, a second power management module 122, a first DC / DC boost module 131, and a second DC / DC boost module 132, wherein the control module 110 is used to A PWM signal with a corresponding duty cycle is gen...

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PUM

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Abstract

The invention relates to an LED (Light Emitting Diode) power system and an LED driving device thereof. The LED driving device comprises a first DC / DC booster module, a second DC / DC booster module, a control module, a first power management module and a second power management module, wherein the control module is used for generating a PWM (Pulse Width Modulation) signal with a corresponding duty ratio for each group of LED lamp string according to brightness information and / or color temperature information; the first power management module is used for controlling the first DC / DC booster module to convert the input voltage into a first driving voltage for driving red LED lamp strings, and controlling the driving current for the red LED lamp strings according to the PWM signals of the red LED lamp strings; the second power management module is used for controlling the second DC / DC booster module to convert the input voltage into a second driving voltage for driving other groups of LED lamp strings, and controlling the driving current for the other groups of LED lamp strings according to the PWM signals of the other groups of LED lamp strings respectively; and the second driving voltage is greater than the first driving voltage. The efficiency of the power system is improved by implementing the technical solution.

Description

technical field [0001] The invention relates to the field of LED lighting, in particular to an LED power supply system and an LED driving device thereof. Background technique [0002] In today's increasingly depleted energy, people pay more attention to energy saving and emission reduction. Improving the efficiency of lighting sources can effectively alleviate the tension of national electric energy, and is of great significance to energy conservation and emission reduction, as well as global resource and environmental protection. Therefore, seeking high-efficiency lighting sources and promoting power-saving projects has become a common and urgent demand in the world. [0003] In the field of LED lighting, color mixing technology has gradually been applied. Color mixing technology refers to controlling LED light strings of different colors to achieve the lighting effect required by users to improve user comfort. However, at present, due to the reason of the red LED lamp b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/37
Inventor 高军礼陈彬许超汕程敏奇肖瑞群吴淦彬南文锐
Owner GUANGDONG UNIV OF TECH