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A led dimming control circuit

A technology of dimming control circuit and dimming signal, applied in the direction of light source, electric light source, electrical components, etc., can solve the problems of high development cost and poor compatibility, and achieve the effect of good compatibility and simple structure

Active Publication Date: 2019-08-23
SHENZHEN SOSEN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an LED dimming control circuit for the defects of high development cost and poor compatibility due to the adoption of a single dimming method in the above-mentioned LED switching power supply of the prior art

Method used

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  • A led dimming control circuit
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Embodiment Construction

[0043]In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0044] figure 1 It is a structural schematic diagram of the first embodiment of an LED dimming control circuit according to the present invention.

[0045] Specifically, the LED dimming control circuit includes a dimming signal input module 101, a filter module 102, a voltage regulator module 103, a constant current source module 104, and a dimming signal processing module 105, wherein,

[0046] The input terminal of the voltage stabilizing source module 103 is connected to the power supply voltage VCC, the output terminal of the voltage stabilizing source module 103 is connected to the constant current source module 104, and the voltage stabilizing source module 103 outputs the reference voltage VDD and the voltage requ...

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Abstract

The invention relates to an LED dimming control circuit. In the dimming control circuit, the voltage stabilizing source module outputs the reference voltage VDD and the voltage required for dimming to the constant current source module; the stabilizing source module outputs the reference voltage VDD to the dimming signal Processing module; the constant current source module outputs constant current to the filter module; the dimming signal input module outputs the original dimming signal to the filtering module; the filtering module outputs the filtered original dimming signal to the dimming signal processing module; dimming signal processing The module processes the original dimming signal and outputs a DC dimming signal. The original dimming signal includes a resistor dimming signal, a voltage dimming signal, and a PWM dimming signal, and the dimming signal input module chooses one of them to output to the filter module. By implementing the invention, the same LED dimming control circuit can output different types of dimming signals according to needs, and the structure is simple and the compatibility is good.

Description

technical field [0001] The invention relates to the field of LED driving, more specifically, to an LED dimming control circuit. Background technique [0002] As a new light source in the 21st century, semiconductor lighting has the advantages of energy saving, environmental protection, long life, and easy maintenance. It is the general trend to replace traditional lighting sources such as incandescent lamps and fluorescent lamps with high-power and high-brightness light-emitting diodes (LEDs). Due to the characteristics of the LED itself, a constant current source must be used to power it. In recent years, LED lighting has shown a rapid development trend, especially in the field of dimming applications. It also has the advantages of continuously adjustable brightness, fast dimming speed, low dimming depth, high dimming precision, and easy digital control. is widely used. [0003] Some LED switching power supplies have the problems of high development cost and poor compati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00H05B45/50
CPCH05B45/10H05B45/325H05B45/395H05B45/34H05B45/50Y02B20/30
Inventor 王宗友莫永福
Owner SHENZHEN SOSEN ELECTRONICS CO LTD