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Drive chip and drive circuit based on switch control LED dimming and color temperature

A driving chip, switch control technology, applied in the direction of electric lamp circuit layout, light source, electric light source, etc., can solve the problems of high complexity and high cost of the dimming and color temperature system, and achieve the goal of promoting promotion, reducing costs, and simplifying peripheral applications. Effect

Active Publication Date: 2017-07-04
SHENZHEN FM ELECTRONICS GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a driver chip based on switch control LED dimming and color temperature, aiming to solve the problem of high complexity and high cost of various dimming and color temperature system schemes

Method used

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  • Drive chip and drive circuit based on switch control LED dimming and color temperature
  • Drive chip and drive circuit based on switch control LED dimming and color temperature
  • Drive chip and drive circuit based on switch control LED dimming and color temperature

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Embodiment Construction

[0018] figure 1 It shows the driver chip based on the switch control LED dimming and color temperature provided by the present invention, the driver chip includes a reference voltage generation circuit, a transfer gate array, a transfer gate, a voltage comparison circuit, a decoding circuit and a memory capacitor, the The output end of the reference voltage generating circuit is connected to one end of the transmission gate array, the other end of the transmission gate array is connected to one end of the transmission gate, and the other end of the transmission gate is connected to the input end of the voltage comparison circuit and the memory capacitance, the output end of the voltage comparison circuit is connected to the input end of the decoding circuit, the output end of the decoding circuit is connected to the control end of the transmission gate array, and the reference voltage generation circuit uses a negative feedback loop and the reference voltage inside the chip to...

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Abstract

The invention relates to a drive chip having the switch control-based LED light-adjusting and color-temperature-adjusting function. The drive chip comprises a reference voltage generation circuit, a transmission gate array, a transmission gate, a voltage comparison circuit, a decoding circuit and a memory capacitor. The output end of the reference voltage generation circuit is connected with one end of the transmission gate array. The other end of the transmission gate array is connected with one end of the transmission gate. The other end of the transmission gate is connected with the input end of the voltage comparison circuit and the memory capacitor. The output end of the voltage comparison circuit is connected with the input end of the decoding circuit. The output end of the decoding circuit is connected with the control end of the transmission gate array. The switch control-based LED light-adjusting and color-temperature-adjusting function of the drive chip is independent of any extra control unit, such as a MCU, a wireless remote control or other light modulators. Therefore, the peripheral application of the system is simplified, and the cost of the system is reduced. Meanwhile, the popularization of LED lamps in the field of light-adjusting and color-temperature-adjusting systems is effectively facilitated.

Description

technical field [0001] The invention belongs to the technical field of LED drive control, and in particular relates to a drive chip for controlling LED dimming and color temperature based on switches. Background technique [0002] LED has attracted more and more attention due to its advantages of high efficiency, energy saving, environmental protection and long life. As a new type of green light source, LED lamps have gradually replaced traditional fluorescent lamps. In the field of lighting, due to the needs of application occasions, different requirements are put forward for the color and brightness of LED lights. For example, in commercial entertainment, office and other public places, different areas have different requirements for lighting color temperature and brightness. Even in the same functional area, there are different brightness and color temperature requirements in different time periods. In response to this need, various dimming, color, and temperature system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 胡渊
Owner SHENZHEN FM ELECTRONICS GRP CO LTD
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