Light-emitting diode (LED) driving circuit and lighting device comprising same

A technology of LED driver and circuit

Inactive Publication Date: 2013-07-10
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of LED lighting, the existing LED driver implementation scheme is usually composed of an active power factor correction circuit and a special driving circuit. flickering problem

Method used

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  • Light-emitting diode (LED) driving circuit and lighting device comprising same
  • Light-emitting diode (LED) driving circuit and lighting device comprising same
  • Light-emitting diode (LED) driving circuit and lighting device comprising same

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Embodiment Construction

[0017] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and those Restrictions may vary from implementation to implementation. Moreover, it should also be understood that development work, while potentially complex and time-consuming, would at least be a routine undertaking for those skilled in the art having the benefit of this disclosure.

[0018] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the ...

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Abstract

The invention provides a light-emitting diode (LED) driving circuit and a lighting device comprising the same. The LED driving circuit comprises a power factor correcting circuit, one or more LED loads, a feedback circuit and a power factor correction controller, wherein the power factor correcting circuit is configured to correct power factors of the circuit; the feedback circuit is configured to supply a feedback signal which is related to the one or more LED loads to the power factor correction controller; and the power factor correction controller is configured to control the power factor correcting circuit based on the feedback signal supplied by the feedback circuit to maintain constant output of the power factor correcting circuit. According to the technical scheme, a factor value with high power can be achieved through a simple circuit structure and low cost, driving to the LED lighting device is achieved at the same time, and stable lighting intensity can be obtained.

Description

technical field [0001] The present invention relates to an LED driving circuit and an illuminating device including the LED driving circuit, in particular to an LED driving circuit capable of obtaining a higher power factor (PF) value and stable luminous intensity with a simple circuit structure and low cost And a lighting device including the LED driving circuit. Background technique [0002] In recent years, light-emitting diodes (LEDs) have been widely used in lighting devices due to their characteristics of high luminous efficiency, long life, high brightness, energy saving, environmental protection, and durability. However, due to the use of traditional switching power supply LED drive circuits, more and more harmonics are injected into the power system, resulting in increasingly serious harmonic pollution in the power grid, which affects the quality of power supply of the power grid and the safety of users. Active power factor correction (APFC) technology is an effect...

Claims

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Application Information

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IPC IPC(8): H05B37/02H05B44/00
CPCH05B45/38H05B45/3725
Inventor贾辉戴雪维刘亚平米德尔·谢科
OwnerOSRAM GMBH