Long-lifetime LED drive circuit

A driving circuit and long-life technology, which is applied to the layout of electric lamp circuits, electric light sources, lighting devices, etc., can solve the problems of short service life, fragility, and low luminous efficiency, and achieve long service life, suppression of instantaneous high voltage, and high application value effect

Inactive Publication Date: 2016-03-16
WUHU RUIXIN ELECTRONICS TECH CO LTD
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Problems solved by technology

[0002] In recent years, as the requirements for conversion efficiency have become higher and higher, power factor has been put on the agenda. In order to improve conversion efficiency, most LED manufacturers have added power factor correction circuits. Integrating power factor correction circuits in drivers is also the future. Another major development trend of the traditional incandescent lamp is to design high-efficiency and energy-saving white light high-power LED lights
At present, the LED drive circuit has the problem of short service time.

Method used

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Embodiment

[0015] An LED long-life drive circuit, the drive circuit includes a drive module, a pre-stage protection module, a filter module, a power conversion module and an LED module, the drive module provides constant current and voltage, the pre-stage protection module and filter The module is connected to the drive module. The pre-stage protection module measures and evaluates the parameters to prevent the peak voltage or current from causing damage to the subsequent modules. The filter module is connected to the pre-stage protection module. The filter module can filter out the electromagnetic pair circuit The power conversion module is connected with the filter module and the LED module. The power conversion module can filter out the peak voltage, convert the input power into the design power, and then convert the high-frequency pulse signal into a stable DC power and send it to the LED module. .

[0016] The pre-stage protection module includes a fuse, a surge current suppression ...

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Abstract

The invention discloses a long-lifetime LED drive circuit. A front-end protection module comprises a fuse, a surge current suppression circuit and a lightning protection circuit; and the phenomenon of damages to subsequent circuits caused by an external peak voltage or current can be avoided by combination of the fuse, the surge current suppression circuit and the lightning protection circuit, so that the usage duration of the drive circuit is ensured. A piezoresistor is arranged in the lightning protection circuit; when the voltage exceeds a threshold, the piezoresistor can effectively suppress an instantaneous high voltage; the drive circuit also comprises a corrugated compensation module; the LED light-emitting quality can be ensured; and the phenomenon of premature light attenuation is avoided. The long-lifetime LED drive circuit has the advantages of long usage duration and small deviation, and has high application value.

Description

technical field [0001] The invention relates to the field of LED circuits, in particular to an LED long-life driving circuit. Background technique [0002] In recent years, as the requirements for conversion efficiency have become higher and higher, power factor has been put on the agenda. In order to improve conversion efficiency, most LED manufacturers have added power factor correction circuits. Integrating power factor correction circuits in drivers is also the future. Another major development trend is to design high-efficiency and energy-saving white light high-power LED lamps for the shortcomings of traditional incandescent lamps, such as high energy consumption, low luminous efficiency, short life and fragility. At present, the LED driving circuit has the problem of short service time. Contents of the invention [0003] The purpose of the present invention is to provide an LED long-life driving circuit. [0004] In order to achieve the above object, the present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 朱成华崔俊国
Owner WUHU RUIXIN ELECTRONICS TECH CO LTD
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