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Self-adaption efficient LED driving power supply

An LED driving and self-adaptive technology, which is applied in the direction of electric light source, light source, lamp circuit layout, etc., can solve the problems of low power factor, weak anti-interference ability, poor output stability, etc., and achieve high power utilization rate and strong anti-interference ability , the effect of suppressing voltage distortion

Inactive Publication Date: 2015-03-25
NINGBO JIANGBEI HWZ ELECTRONICS
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  • Application Information

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Problems solved by technology

[0004] The current LEDs mainly use AC power supply, and a constant voltage and current is supplied to the LED through the converter. However, this method not only has a relatively low power factor, but also cannot effectively suppress the distortion caused by the input terminal; and dimming is mainly by changing the current LED current, and under different current conditions, the wavelength of light emitted is different, which affects the luminous efficiency. Therefore, this type of circuit has disadvantages such as weak anti-interference ability, poor output stability, low output accuracy, and low power factor.

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Embodiment Construction

[0020] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0021] According to an embodiment of the present invention, an adaptive high-efficiency LED drive power supply is proposed, such as figure 1 As shown, the LED drive power supply includes: EMI filter unit, DC conversion unit, switch conversion unit, drive switching power supply unit, independent cycle control unit, analog photoelectric isolation unit, steady current power output unit, steady current control unit, pulse width modulat...

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Abstract

The invention discloses a self-adaption efficient LED driving power supply. An independent circulating control unit is arranged so that voltage precision can be controlled within an ultra-small range, and voltage distortion can be effectively suppressed; due to the arrangement of a current stabilizing control unit, current can be maintained to be linearly continuous; the anti-interference capacity of a whole circuit is high, output is stable, and the electric energy utilization rate is high.

Description

technical field [0001] The invention relates to the field of LED driving, in particular to an adaptive high-efficiency LED driving power supply. Background technique [0002] With the development of human civilization, lighting equipment has already entered people's daily life. Traditional lighting sources mainly include incandescent lamps, fluorescent lamps, and energy-saving lamps. , high energy consumption, low luminous efficiency, and even some pollution, the development of new lighting sources is the future trend. [0003] As a new type of light source, LED has the following main advantages compared with traditional light sources: small size, low power consumption, low heat generation, long life, fast response, safety, and environmental protection. At present, LED has not only been successfully used in some general occasion lighting , and its special advantages such as high luminous intensity, long service life, and environmental protection can meet the needs of specia...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 柏子江
Owner NINGBO JIANGBEI HWZ ELECTRONICS