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LED control unit circuit

A control unit and circuit technology, applied in the direction of electrical components, etc., can solve the problems of large space required, high production cost, and difficult to market

Pending Publication Date: 2021-03-05
惠州市安规电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, LED intelligent dimming generally requires more than two outputs, and the two outputs currently use two DC / DCs, or add isolated high-speed optocouplers or use integrated circuits to achieve, which results in high production costs and requires space. large, difficult to market
Radiation harassment is quite difficult for developers to pass, and the space required for the driver module is also very large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: When the control unit is a triode Q1 and a resistor R6, the second field effect transistor is a P-channel field effect transistor, and the third field effect transistor is an N-channel field effect transistor.

[0025] When the intelligent module outputs, the module provides a pwm square wave. When the output is high, the output of transistor Q1 is low. At this time, the gate of the second field effect transistor is low, and the second field effect transistor is turned on. At this time, the LED lights up in cool white light, and the third FET is cut off;

[0026] When the intelligent module outputs a low level, the transistor Q1 is cut off, and the diode DZ1 is charged through the resistors R3 and R4. At this time, the gate of the third field effect transistor is 10V, and the third field effect transistor is turned on. At this time, the warm white light is on. When the intelligent module continuously outputs the PWM signal, the dimming and color adjustment...

Embodiment 3

[0029] Embodiment 3: the control unit is an N-channel FET, the drain is connected to VCC, the S pole is connected to the ground, the second FET is a P-channel FET, and the third FET is an N-channel FET;

[0030] When the intelligent module outputs, the module provides a pwm square wave. When the output is high level, the output of the first field effect transistor is high level. At this time, the gate of the second field effect transistor is high level, and the second field effect transistor Cut-off, at this time, the LED light is warm white, and the third FET is turned on;

[0031] When the intelligent module outputs a low level, the first field effect transistor is cut off, and the second field effect transistor is turned on, and the cool white light is on at this time. When the intelligent module continuously outputs the PWM signal, the dimming and color adjustment of the LED can be realized.

Embodiment 4

[0032] Embodiment 4: the control unit is an N communication field effect transistor, the drain is connected to VCC, the S pole is connected to the ground electrode, and the second field effect transistor and the third field effect transistor are N communication field effect transistors;

[0033] When the intelligent module outputs, the module provides a pwm square wave. When the output is high level, the output of the first field effect transistor is high level. At this time, the gate of the second field effect transistor is high level, and the second field effect transistor Conduction, at this time the LED light is on with cool white light, and the third field effect tube is cut off;

[0034] When the intelligent module outputs a low level, the first field effect transistor is cut off, the second field effect transistor is cut off, and the third field effect transistor is turned on. At this time, the temperature is warm and bright. When the intelligent module continuously out...

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Abstract

The invention discloses an LED control unit circuit which comprises a control unit, a resistor R4, a resistor R5, a diode DZ1 and a control module U2, the signal output end of the control unit is connected with a G2 pin of the control module U2, one end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is connected with the negative electrode of the diode DZ1, anda G1 pin of the control module U2 is connected with a common connection point. According to the LED control unit circuit, the control unit and the control module U2 are arranged in a matched mode, the second field-effect tube and the third field-effect tube of the control module U2 are controlled to be connected and disconnected through connection and disconnection of the control unit, and then cold white light or warm white light of an LED lamp can be controlled to be turned on or turned off respectively. The problem that two paths of output need two paths of DCDC input is successfully solved, the problem of radiation disturbance is well avoided, the circuit is simple and reliable, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of LED control circuits, in particular to an LED control unit circuit. Background technique [0002] At present, LED intelligent dimming generally requires more than two outputs, and the two outputs currently use two DC / DCs, or add isolated high-speed optocouplers or use integrated circuits to achieve, which results in high production costs and requires space. Large and difficult to market. For developers, radiation disturbance is quite difficult to pass, and the space required by the driver module is also very large. Contents of the invention [0003] Based on this, it is necessary to provide an LED control unit circuit with low cost, convenient installation and small space occupation. [0004] An LED control unit circuit, comprising a control unit, a resistor R4, a resistor R5, a diode DZ1, and a control module U2, the signal output terminals of the control unit are respectively connected to the G2 pin...

Claims

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Application Information

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IPC IPC(8): H05B45/325H05B45/10H05B45/20
CPCH05B45/10H05B45/20H05B45/325
Inventor 陈道波
Owner 惠州市安规电子有限公司
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