CN205726523U - Can overtemperature protection LED addressable drive power supply - Google Patents
Can overtemperature protection LED addressable drive power supply Download PDFInfo
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- CN205726523U CN205726523U CN201620309100.7U CN201620309100U CN205726523U CN 205726523 U CN205726523 U CN 205726523U CN 201620309100 U CN201620309100 U CN 201620309100U CN 205726523 U CN205726523 U CN 205726523U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
This utility model disclose a kind of can overtemperature protection LED addressable drive power supply, including temperature coefficient of resistance interface NTC, ICS2, resistance unit R1, Zener diode ZD1, Zener diode ZD2, resistance unit R2, resistance unit R3, optocoupler U1, resistance unit R4, resistance unit R5 and MCU NTC pin, the 2 of described temperature coefficient of resistance part interface NTC Yu ICS2, 3 feet connect, and connect Zener diode ZD1 by ICS2, described temperature coefficient of resistance part interface NTC and Zener diode ZD2 is altogether, described resistance unit R3 connects power supply VCC, described optocoupler U1 connects Zener diode ZD1, the left end of described resistance unit R4 is connected with resistance unit R5, the left end of described resistance unit R5 is connected with MCU VDD pin；This LED addressable of overtemperature protection can drive power supply to have the advantage improving the reliability of light fixture and its service life.
Description
Technical field
This utility model relate to a kind of can overtemperature protection LED addressable drive power supply.
Background technology
The LED drive power of prior art is without LED luminous source temperature monitoring, overheat protector function.During if there is situations below: 1. ambient temperature is too high, steam or the high ambient temperature caused that is exposed to the sun；2.LED lamp assembly is abnormal, and common have LED lamp bead to puncture；3.LED luminous source radiating subassembly is aging, dispels the heat bad.
Below easily cause LED luminous source overheated to burn out, the overheated impaired lost of life of power supply overpower, the even high temperature combustible around that ignites causes on fire.
Solve this problem to need to start with from power supply, reduce driving electric current when excess temperature occurs, to protect luminous source without damage and to avoid luminous source to damage other potential safety hazards brought.The shortcoming driving power supply self due to routine, it is achieved this function is relatively difficult.
Utility model content
What the technical problems to be solved in the utility model was to provide a kind of reliability improving light fixture and its service life the LED addressable of overtemperature protection can drive power supply.
For solving the problems referred to above, this utility model adopts the following technical scheme that
nullA kind of can overtemperature protection LED addressable drive power supply，Including temperature coefficient of resistance interface NTC、ICS2、Resistance unit R1、Zener diode ZD1、Zener diode ZD2、Resistance unit R2、Resistance unit R3、Optocoupler U1、Resistance unit R4、Resistance unit R5 and MCU-NTC pin，The 2 of described temperature coefficient of resistance part interface NTC Yu ICS2、3 feet connect，And connect Zener diode ZD1 by ICS2，Described temperature coefficient of resistance part interface NTC and Zener diode ZD2 is altogether，Described resistance unit R1 and resistance unit R2 is positioned on Zener diode ZD1 and Zener diode ZD2，The left side of described resistance unit R2 is connected with resistance unit R3，Described resistance unit R3 connects power supply VCC，Described optocoupler U1 connects Zener diode ZD1，Described resistance unit R4 is positioned at the left side of optocoupler U1，The right-hand member of described resistance unit R4 is connected with optocoupler U1，The left end of described resistance unit R4 is connected with resistance unit R5，The left end of described resistance unit R5 is connected with MCU-VDD pin.
As preferably, described temperature coefficient of resistance interface NTC is connected to LED luminous source, can be monitored the temperature of LED luminous source by negative temperature coefficient resister interface NTC, when temperature occurs abnormal, starts to reduce output electric current, thus reduces output, accelerate heat and scatter and disappear.
As preferably, the resistance of described resistance unit R1 is 11K.
As preferably, the resistance of described resistance unit R2 is 3.3K.
As preferably, the resistance of described resistance unit R3 is 22K.
As preferably, the voltage of the negative pole of described Zener diode ZD1 is 5.1V.
As preferably, on described optocoupler U1, connection has light emitting diode and illuminated triode, can be when the voltage of Zener diode ZD1 negative pole be increased beyond 5.1V, stabilivolt reverse breakdown works, the LEDs ON of optocoupler U1 is luminous, and illuminated triode is open-minded so that MCU-NTC pin detects low level, and regulate output electric current control pin, reduce PWM duty cycle.
As preferably, the resistance of described resistance unit R4 is 22K.
As preferably, the resistance of described resistance unit R5 is 220K.
The beneficial effects of the utility model: use this utility model, can be greatly improved LED addressable drives power supply and luminous source in the reliability of interior overall light fixture, extend the service life of light fixture, reduce light fixture and lost efficacy to the fire risk using environment to bring, improve security performance.
Accompanying drawing explanation
Fig. 1 be this utility model a kind of can overtemperature protection LED addressable drive power supply circuit diagram.
Detailed description of the invention
nullAs shown in Figure 1，A kind of can overtemperature protection LED addressable drive power supply，Including temperature coefficient of resistance interface NTC、ICS2、Resistance unit R1、Zener diode ZD1、Zener diode ZD2、Resistance unit R2、Resistance unit R3、Optocoupler U1、Resistance unit R4、Resistance unit R5 and MCU-NTC pin，The 2 of described temperature coefficient of resistance part interface NTC Yu ICS2、3 feet connect，And connect Zener diode ZD1 by ICS2，Described temperature coefficient of resistance part interface NTC and Zener diode ZD2 is altogether，Described resistance unit R1 and resistance unit R2 is positioned on Zener diode ZD1 and Zener diode ZD2，The left side of described resistance unit R2 is connected with resistance unit R3，Described resistance unit R3 connects power supply VCC，Described optocoupler U1 connects Zener diode ZD1，Described resistance unit R4 is positioned at the left side of optocoupler U1，The right-hand member of described resistance unit R4 is connected with optocoupler U1，The left end of described resistance unit R4 is connected with resistance unit R5，The left end of described resistance unit R5 is connected with MCU-VDD pin.
Described temperature coefficient of resistance interface NTC is connected to LED luminous source, can be monitored the temperature of LED luminous source by negative temperature coefficient resister interface NTC, when temperature occurs abnormal, starts to reduce output electric current, thus reduces output, accelerate heat and scatter and disappear.
The resistance of described resistance unit R1 is 11K.
The resistance of described resistance unit R2 is 3.3K.
The resistance of described resistance unit R3 is 22K.
The voltage of the negative pole of described Zener diode ZD1 is 5.1V.
On described optocoupler U1, connection has light emitting diode and illuminated triode, can be when the voltage of Zener diode ZD1 negative pole be increased beyond 5.1V, stabilivolt reverse breakdown works, the LEDs ON of optocoupler U1 is luminous, illuminated triode is open-minded, make MCU-NTC pin low level be detected, and regulate output electric current control pin, reduce PWM duty cycle.
The resistance of described resistance unit R4 is 22K.
The resistance of described resistance unit R5 is 220K.
The beneficial effects of the utility model: use this utility model, can be greatly improved LED addressable drives power supply and luminous source in the reliability of interior overall light fixture, extend the service life of light fixture, reduce light fixture and lost efficacy to the fire risk using environment to bring, improve security performance.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model is not limited thereto, any change expected without creative work or replacement, all should contain within protection domain of the present utility model.
Claims (9)
- null1. one kind can overtemperature protection LED addressable drive power supply，It is characterized in that: include temperature coefficient of resistance interface NTC、ICS2、Resistance unit R1、Zener diode ZD1、Zener diode ZD2、Resistance unit R2、Resistance unit R3、Optocoupler U1、Resistance unit R4、Resistance unit R5 and MCU-NTC pin，The 2 of described temperature coefficient of resistance part interface NTC Yu ICS2、3 feet connect，And connect Zener diode ZD1 by ICS2，Described temperature coefficient of resistance part interface NTC and Zener diode ZD2 is altogether，Described resistance unit R1 and resistance unit R2 is positioned on Zener diode ZD1 and Zener diode ZD2，The left side of described resistance unit R2 is connected with resistance unit R3，Described resistance unit R3 connects power supply VCC，Described optocoupler U1 connects Zener diode ZD1，Described resistance unit R4 is positioned at the left side of optocoupler U1，The right-hand member of described resistance unit R4 is connected with optocoupler U1，The left end of described resistance unit R4 is connected with resistance unit R5，The left end of described resistance unit R5 is connected with MCU-VDD pin.
- The most as claimed in claim 1 can overtemperature protection LED addressable drive power supply, it is characterised in that: described temperature coefficient of resistance interface NTC is connected to LED luminous source.
- The most as claimed in claim 2 can overtemperature protection LED addressable drive power supply, it is characterised in that: the resistance of described resistance unit R1 is 11K.
- The most as claimed in claim 3 can overtemperature protection LED addressable drive power supply, it is characterised in that: the resistance of described resistance unit R2 is 3.3K.
- The most as claimed in claim 4 can overtemperature protection LED addressable drive power supply, it is characterised in that: the resistance of described resistance unit R3 is 22K.
- The most as claimed in claim 5 can overtemperature protection LED addressable drive power supply, it is characterised in that: the voltage of the negative pole of described Zener diode ZD1 is 5.1V.
- The most as claimed in claim 6 can overtemperature protection LED addressable drive power supply, it is characterised in that: on described optocoupler U1, connection has light emitting diode and illuminated triode.
- The most as claimed in claim 7 can overtemperature protection LED addressable drive power supply, it is characterised in that: the resistance of described resistance unit R4 is 22K.
- The most as claimed in claim 8 can overtemperature protection LED addressable drive power supply, it is characterised in that: the resistance of described resistance unit R5 is 220K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620309100.7U CN205726523U (en) | 2016-04-14 | 2016-04-14 | Can overtemperature protection LED addressable drive power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620309100.7U CN205726523U (en) | 2016-04-14 | 2016-04-14 | Can overtemperature protection LED addressable drive power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205726523U true CN205726523U (en) | 2016-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620309100.7U Active CN205726523U (en) | 2016-04-14 | 2016-04-14 | Can overtemperature protection LED addressable drive power supply |
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| Country | Link |
|---|---|
| CN (1) | CN205726523U (en) |
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2016
- 2016-04-14 CN CN201620309100.7U patent/CN205726523U/en active Active
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