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A kind of led power supply system and led driving device thereof

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

Active Publication Date: 2018-02-16
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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  • A kind of led power supply system and led driving device thereof
  • A kind of led power supply system and led driving device thereof
  • A kind of led power supply system and led driving device thereof

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Experimental program
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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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Abstract

The present invention relates to an LED power supply system and its LED driving device. The LED driving device includes: a first DC / DC boost module; a second DC / DC boost module; The color temperature information generates a PWM signal with a corresponding duty cycle for each group of LED light strings; the first power management module is used to control the first DC / DC boost module to convert the input voltage into the first drive for driving the red LED light strings Voltage, and control the driving current of the red LED light string according to the PWM signal of the red LED light string; the second power management module is used to control the second DC / DC boost module to convert the input voltage to drive other groups of LED light strings The second driving voltage, and respectively control the driving current of each other group of LED light strings according to the PWM signal of each other group of LED light strings; the second driving voltage is greater than the first driving voltage. Implementing the technical scheme of the invention improves the efficiency of the power supply system.

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 Patents(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