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LED driving system

A technology for light-emitting diodes and driving systems, applied in electroluminescent light sources, control/regulation systems, light sources, etc., can solve problems such as system failure to work properly, damage to light-emitting diode components, etc., and achieve stable working performance and long service life.

Inactive Publication Date: 2009-08-26
FOXSEMICON INTEGRATED TECHNOLOGY (SHANGHAI) INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long service life of light-emitting diodes, generally 100,000 hours, which is far higher than that of ordinary electronic components, the existing light-emitting diode drive system will be damaged if it cannot be maintained in time when it is abnormal during long-term use. The components in the control circuit of the light-emitting diode are damaged and the entire system cannot work normally, so the entire system needs to be replaced

Method used

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  • LED driving system
  • LED driving system

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no. 1 approach

[0010] The LED driving system 100 includes: a protection circuit 102 , a rectification circuit 103 , a power factor correction circuit 104 , a driving circuit 105 , a LED module 106 , an electrical detection circuit 107 and a monitoring center 108 . Wherein, the LED module 106 includes at least one LED.

[0011] When the AC power provided by the external AC power supply 101 is input to the LED drive system 100, it first passes through the protection circuit 102. The protection circuit 102 includes a voltage protection circuit and a current protection circuit to prevent the entire circuit from being damaged by surges in the AC power supply. .

[0012] The output end of the protection circuit 102 is electrically connected to the input end of the rectification circuit 103. The rectification circuit 103 rectifies the input AC power into a DC output to meet the working requirements of the LED module 106. The rectification circuit 103 can be a bridge rectifier.

[0013] The output ...

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Abstract

The invention provides an LED driving system, which comprises a protective circuit, a rectification circuit, a driving circuit, an LED module and an electric property detecting circuit, wherein the input end of the protective circuit is electrically connected with an alternating power source; the input end of the rectification circuit is electrically connected with the output end of the protective circuit; the input end of the driving circuit is electrically connected with the output end of the rectification circuit; the input end of the LED module is electrically connected with the output end of the driving circuit; the driving circuit controls the lightening of the LED module; and the input end of the electric detecting circuit is respectively electrically connected with the input end of the protective circuit, and the output ends of the protective circuit, the rectification circuit and the driving circuit for detecting the voltage or current value of each electric connection point and comparing the voltage or current value of each electric connection point with the corresponding reference voltage or current value to detect whether the protective circuit, the rectification circuit and the driving circuit operate normally.

Description

technical field [0001] The invention relates to a light emitting diode driving system. Background technique [0002] Light Emitting Diode (LED, Light Emitting Diode) is widely used in the field of lighting due to its high brightness, low operating voltage, low power consumption, easy matching with integrated circuits, simple driving, and long life. For details, please refer to Joseph Bielecki et al. In 2007 IEEE, Thermal Considerations for LED Components in an Automotive Lamp in the 23rd IEEE SEMI-THERM Symposium. [0003] Existing LED control circuits generally include a rectifier circuit and a drive circuit. The input AC voltage is converted into DC power after passing through the rectifier circuit, and the DC power is input into the drive circuit to control the light-emitting diodes to be turned on and off. Due to the long service life of light-emitting diodes, generally 100,000 hours, which is far higher than that of ordinary electronic components, the existing light-e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/00H05B37/03G05F1/46
CPCY02B20/341H05B33/0887H05B33/0833H05B33/089H05B45/14H05B45/56Y02B20/30
Inventor 胡胜凯洪隆裕林凯琪王君伟
Owner FOXSEMICON INTEGRATED TECHNOLOGY (SHANGHAI) INC