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0~10v LED dimming signal conversion circuit and LED power supply dimming circuit

A technology of LED power supply and dimming signal, applied in the field of LED dimming, can solve the problems of high cost and complicated circuit

Active Publication Date: 2019-04-30
SHENZHEN LONGOOD INTELLIGENT ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a 0-10V LED dimming signal conversion circuit with a simple structure and low cost for the problem of complex circuit and high cost of the traditional LED dimming circuit

Method used

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  • 0~10v LED dimming signal conversion circuit and LED power supply dimming circuit
  • 0~10v LED dimming signal conversion circuit and LED power supply dimming circuit
  • 0~10v LED dimming signal conversion circuit and LED power supply dimming circuit

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] figure 1 It is a functional block diagram of a 0-10V LED dimming signal conversion circuit in an embodiment. The 0-10V LED dimming signal conversion circuit is used to convert the 0-10V dimming signal into the driving signal of the control chip 20 of the LED power supply dimming circuit, so that the control chip 20 can adjust the brightness of the LED lamp according to the driving signal. Make adjustments.

[0017] see figure 1 , the 0-10V LED dimming signal conversion circuit includes a power input terminal 110 , an isolation element 130 , a 0-10V dimming signal input terminal 150 and a ...

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Abstract

The invention relates to a 0-10V LED dimming signal conversion circuit and an LED power supply dimming circuit. A 0-10V LED dimming signal conversion circuit, used to convert the 0-10V dimming signal into the driving signal of the control chip of the LED power dimming circuit, including: a power input terminal, used to receive the input power as a 0-10V Working power supply for 10V LED dimming signal conversion circuit; isolation element, one side of the isolation element is connected to the input terminal of 0-10V dimming signal for receiving 0-10V dimming signal; the other side of the isolation element is connected to the conversion module , and connected to the input terminal of the power supply; the isolation element is used to proportionally isolate the voltage of the 0-10V dimming signal as the input voltage of the conversion module; and the conversion module is used to convert the input voltage into a drive signal with a target voltage Then output to the control chip. The 0-10V LED dimming signal conversion circuit does not involve complex single-chip technology or conventional analog PWM adjustment conversion circuit, and the whole circuit structure is simple and the cost is low.

Description

technical field [0001] The invention relates to the field of LED dimming, in particular to a 0-10V LED dimming signal conversion circuit and an LED power supply dimming circuit. Background technique [0002] The PSR (primary regulation) circuit has a simple structure and is widely used in the field of LED driving power. The isolated primary constant current single-stage PFC (power factor correction) power management chip with dimming function needs to realize the specific control function of 0-10V dimming. Usually, the external 0-10V voltage signal is converted into a corresponding PWM signal through complex analog circuits such as a triangle wave generator and PWM (pulse width modulation), or the external 0-10V voltage signal is converted into a corresponding control signal by using single-chip microcomputer technology. Then, the main control chip is controlled by isolating the photocoupler and transmitted to the dimming pin of the primary main control chip, thereby adjust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/50H05B45/37H05B45/10Y02B20/30
Inventor 罗羽房俊刘邦
Owner SHENZHEN LONGOOD INTELLIGENT ELECTRIC