Dimming controller, driving circuit and dimming method for controlling LED light source

A technology of dimming controller and driving circuit, applied in the field of light source control, can solve the problem that users cannot adjust the brightness, etc., and achieve the effect of improving energy utilization efficiency and improving dimming stability

Inactive Publication Date: 2015-12-09
AOTU ELECTRONICS WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the disadvantages of this traditional solution is that the desired brightness is preset, and the user cannot adjust the brightness during use.

Method used

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  • Dimming controller, driving circuit and dimming method for controlling LED light source
  • Dimming controller, driving circuit and dimming method for controlling LED light source
  • Dimming controller, driving circuit and dimming method for controlling LED light source

Examples

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Embodiment Construction

[0034] Detailed reference will be given below to examples of the present invention. Although the present invention has been illustrated and illustrated by these embodiments, it should be noted that the present invention is not limited to these embodiments. On the contrary, the invention covers all alternatives, modifications and equivalents which are within the spirit and scope of the invention as defined by the appended claims.

[0035] In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the gist of the present invention.

[0036] image 3 Shown is a schematic diagram of a light source driving circuit 300 according to an embodiment of th...

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PUM

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Abstract

The invention discloses a dimming controller, a driving circuit and a dimming method for controlling an LED light source. The dimming controller includes a voltage control port and a current control port. When the dimming controller works in the first mode, the voltage control port provides a pulse signal, and the pulse signal controls the control switch to work in the first state or the second state. When the control switch works in the first state, the voltage flowing through the LED light source The first current increases, and when the control switch works in the second state, the first current decreases; when the dimming controller works in the second mode, the voltage control port provides a control signal for the control switch to cut off the first current. When the dimming controller operates in the second mode, the current control port conducts the second current flowing through the LED light source. The invention realizes a wider range of dimming of the LED light source, improves the energy utilization efficiency, and improves the dimming stability of the LED light source.

Description

technical field [0001] The invention relates to the field of light source control, in particular to a dimming controller, a driving circuit and a dimming method for controlling an LED light source. Background technique [0002] In recent years, new light sources such as light-emitting diodes (LEDs) have made progress in both materials and manufacturing. LED has the characteristics of high efficiency, long life, bright colors, etc., and can be used in the fields of automobiles, computers, communications, military and daily necessities. For example, LED lamps can replace traditional incandescent lamps as lighting sources. [0003] figure 1 Shown is a schematic diagram of a conventional LED driving circuit 100 . LED driver circuit 100 utilizes LED chain 106 as a light source. LED chain 106 includes a plurality of LEDs connected in series. The power converter 102 is used to convert the DC input voltage Vin into a desired DC output voltage Vout for powering the LED chain 106...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02H05B44/00
CPCH05B45/10
Inventor 郭清泉林永霖
Owner AOTU ELECTRONICS WUHAN
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