CN208572507U - A kind of LED light strip driving circuit with automatic adjustment power - Google Patents
A kind of LED light strip driving circuit with automatic adjustment power Download PDFInfo
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- CN208572507U CN208572507U CN201821216350.1U CN201821216350U CN208572507U CN 208572507 U CN208572507 U CN 208572507U CN 201821216350 U CN201821216350 U CN 201821216350U CN 208572507 U CN208572507 U CN 208572507U
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- light strip
- chip microcontroller
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Abstract
A kind of LED light strip driving circuit with automatic adjustment power, there is the external LED light strip of several resistance and lamp bead including internal parallel, it further include having the impedance for capableing of automatic identification resistance and the AD signal recognition circuit that adjusts its current duty cycle and providing the power supply chip circuit of power supply for external LED light strip, the AD signal recognition circuit and power supply chip circuit connection, the utility model provides a kind of LED light strip driving circuit with automatic adjustment power, it being capable of automatic identification duty cycle mode adjusting power, automatic detection lamp bead and number, it is corresponding with lamp bead power to realize that lamp bead is detected rear automated power (by adjusting current-mode).
Description
Technical field
Utility model is related to LED lamp drive circuit field, and espespecially a kind of LED light strip with automatic adjustment power drives electricity
Road.
Background technique
For cost consideration, the driving circuit of existing LED light strip is simpler, general only to have fusing and rectifying device,
When in power network fluctuation, voltage is more than 220V, the virtual voltage of LED can be more than voltage rating in light bar, will necessarily if things go on like this make
The adverse effect to shorten at LED life；Although having there is the problem of Switching Power Supply is able to solve voltage ripple of power network in the industry, open
The cost in powered-down source is excessively high, and ordinary lamps band client is unbearable, it would therefore be highly desirable to solve the driving problems of LED light strip；
This following disadvantage is existed simultaneously in existing technology:
1. resistance constant current loss is big, light efficiency is poor；
2. changed power is big, Wen Shenggao；
3. unprotect route；
4. traditional output voltage is up to 300V, High voltage output electricity people is severe, and there are security risks.
Utility model content
To solve the above problems, utility model provides a kind of LED light strip driving circuit with automatic adjustment power, it can
Automatic identification duty cycle mode adjusting power, it is automatic to detect lamp bead and number, realize that lamp bead is detected rear automated power (by adjusting electric current
Mode) it is corresponding with lamp bead power.
To achieve the above object, utility model the technical solution adopted is that: it is a kind of with automatic adjustment power LED light strip
Driving circuit has the external LED light strip of several resistance and lamp bead including internal parallel, further includes that have being capable of automatic identification resistance
Impedance and adjust its current duty cycle AD signal recognition circuit and for external LED light strip provide power supply power supply chip electricity
Road, the AD signal recognition circuit are connect with the resistance inside external LED light strip, the AD signal recognition circuit and power supply chip
Circuit connection, the power supply chip circuit and external LED light band connection.
Wherein, the AD signal recognition circuit includes AD signal identification single-chip microcontroller (IC3), the 28th resistance (R28),
26 resistance (R26), the 14th resistance (R14), the 9th capacitor (C9), the 28th resistance (R28) and AD signal are known
Other single-chip microcontroller (IC3) connection, the end VOUT of the AD signal identification single-chip microcontroller (IC3) are connect with the 26th resistance (R26), institute
The SW for stating AD signal identification single-chip microcontroller (IC3) passes through the 14th resistance (R14), the 9th capacitor (C9) correspondence and signal ground respectively
Connection.
Wherein, the AD signal recognition circuit further includes having integrated package inductance coil (L3), three-terminal voltage-stabilizing pipe (KP1),
12 resistance (R12), the 11st diode (D11), the 7th diode (D7), the 8th capacitor (C8), the 7th capacitor (C7), it is described
The vdd terminal of AD signal identification single-chip microcontroller (IC3) by inductance coil (L3), twelfth resistor (R12) three series connection after with three ends
The end CS of voltage-stabiliser tube (KP1) connects, and the vdd terminal of the three-terminal voltage-stabilizing pipe (KP1) passes through the 8th capacitor (C8) and the 7th diode
(D7) negative pole end connection, the positive terminal of the 7th diode (D7) with signal ground by connecting, the three-terminal voltage-stabilizing pipe
(KP1) vdd terminal is connect with the negative pole end of the 11st diode (D11), and the positive terminal of the 11st diode (D11) passes through
7th capacitor (C7) is connect with signal ground.
Wherein, the power supply chip circuit include the power supply chip circuit include transformer (L9), first resistor (R1),
Second resistance (R2), 3rd resistor (R3), the 21st resistance (R21), the 22nd resistance (R22), the 23rd resistance
(R23), the 25th resistance (R25), the 6th diode (D6), third polar capacitor (C3), the 15th polar capacitor (C15),
The positive and negative anodes correspondence of 5th polar capacitor (C5), the 4th capacitor (C4), the 15th polar capacitor (C15) is connected in parallel on third pole
Property capacitor (C3) positive and negative anodes on, one end of the first resistor (R1) is connect with the anode of third polar capacitor (C3), described
The positive terminal of the other end of first resistor (R1), second resistance (R2), 3rd resistor (R3) and the 5th polar capacitor (C5)
Between connect, the negative pole end of the 5th polar capacitor (C5) ground connection, the other end of the 22nd resistance (R22), second
It connects between 15 resistance (R25), the 23rd resistance (R23) three, one end ground connection of the 23rd resistance (R23),
3 ends of the transformer (L9) pass through between the 6th diode (D6), the 4th capacitor (C4) and the 21st resistance (R21) three
It is grounded after series connection, the 4 ends ground connection of the transformer (L9).
Wherein, the power supply chip circuit further includes having power regulation single-chip microcontroller (IC1), photoelectrical coupler (IC2), second
14 resistance (R24), the 19th resistance (R19), the 20th resistance (R20), resistance (R0), the 49th resistance (R49), the 5th
Resistance (R5), the 6th resistance (R6), the second diode (D2), the 39th diode (D39), field-effect tube (Q1), the change
3 ends of depressor (L9) are connect with 2 ends of field-effect tube (Q1), and 3 ends of the field-effect tube (Q1) pass through resistance (R0), respectively
Five resistance (R5) ground connection, 3 ends of the field-effect tube (Q1) are connect with the end CS of power regulation single-chip microcontroller (IC1), the field effect
1 end that (Q1) should be managed passes through the 49th resistance (R49), the 39th diode (D39) and power regulation single-chip microcontroller respectively
(IC1) the end GATE connection, the vdd terminal of the power regulation single-chip microcontroller (IC1) are grounded by the 6th resistance (R6), the power
The end the GND ground connection of single-chip microcontroller (IC1) is adjusted, the end FB of the power regulation single-chip microcontroller (IC1) passes through the 19th resistance respectively
(R19), the 20th resistance (R20) is connect with 3 ends of ground, the transformer (L9), the power regulation single-chip microcontroller (IC1)
The end DIM is connect by the 24th resistance (R24) with the C-terminal of photoelectrical coupler (IC2), the end E of the photoelectrical coupler (IC2)
Ground connection, the S termination signal ground wire of the photoelectrical coupler (IC2).
Wherein, the model WS8125 of the power regulation single-chip microcontroller (IC1).
The beneficial effect of utility model is: the input of power regulation single-chip microcontroller is connected in parallel on light bar uppermost resistive by identification
Impedance, adjust the size of the duty ratio control power supply chip led electric current of output pin, and have it is following a little: 1. is full
Efficiency is up to 96% or more when load, environmentally protective；2. have digital circuit changes power functions automatically, with linear times of digital circuit
Rate changed power；3. the characteristics of protection circuit, has the function of output short circuit protection, no-load protection, overpower protection；4. output
Voltage is low, in addition to not wearing shoes operation, output touch will not electric people, even if not wearing shoes operation is also very slight electric people,
Safety coefficient is high.
Detailed description of the invention
Fig. 1 is the work flow diagram of the utility model.
Fig. 2 is the schematic diagram of AD signal recognition circuit.
Fig. 3 is the schematic diagram of power supply chip circuit.
Specific embodiment
It please refers to shown in Fig. 1-3, utility model is about a kind of LED light strip driving circuit with automatic adjustment power, packet
The external LED light strip that internal parallel has several resistance and lamp bead is included, further includes having the impedance for capableing of automatic identification resistance and tune
It saves the AD signal recognition circuit of its current duty cycle and provides the power supply chip circuit of power supply, the AD letter for external LED light strip
Number identification circuit is connect with the resistance inside external LED light strip, the AD signal recognition circuit and power supply chip circuit connection, institute
State power supply chip circuit and external LED light band connection.
Compared to existing technologies, the utility model is by using can automatically adjust current duty cycle after signal identification
AD signal recognition circuit and power supply chip circuit realize to output external LED light bar electric current be adjusted, realize have compared with
High full load efficiency.
Wherein, the AD signal recognition circuit includes AD signal identification single-chip microcontroller (IC3), the 28th resistance (R28),
26 resistance (R26), the 14th resistance (R14), the 9th capacitor (C9), the 28th resistance (R28) and AD signal are known
The end NC of other single-chip microcontroller (IC3) is connected, the end VOUT of the AD signal identification single-chip microcontroller (IC3) and the 26th resistance (R26)
Connection, the SW of the AD signal identification single-chip microcontroller (IC3) pass through respectively the 14th resistance (R14), the 9th capacitor (C9) it is corresponding with
Signal ground connection.
Using the above scheme, AD signal identification single-chip microcontroller (IC3), which can identify, is connected in parallel on external LED light strip internal resistance
Impedance after automatic identification impedance, exports the power tune on a square wave control power supply chip circuit according to the size of impedance automatically
The output power for saving single-chip microcontroller (IC1), to automatically adjust the electric current for exporting external LED light strip.
Wherein, the AD signal recognition circuit further includes having integrated package inductance coil (L3), three-terminal voltage-stabilizing pipe (KP1),
12 resistance (R12), the 11st diode (D11), the 7th diode (D7), the 8th capacitor (C8), the 7th capacitor (C7), it is described
The vdd terminal of AD signal identification single-chip microcontroller (IC3) by inductance coil (L3), twelfth resistor (R12) three series connection after with three ends
The end CS of voltage-stabiliser tube (KP1) connects, and the vdd terminal of the three-terminal voltage-stabilizing pipe (KP1) passes through the 8th capacitor (C8) and the 7th diode
(D7) negative pole end connection, the positive terminal of the 7th diode (D7) with signal ground by connecting, the three-terminal voltage-stabilizing pipe
(KP1) vdd terminal is connect with the negative pole end of the 11st diode (D11), and the positive terminal of the 11st diode (D11) passes through
7th capacitor (C7) is connect with signal ground.
Wherein, the power supply chip circuit include the power supply chip circuit include transformer (L9), first resistor (R1),
Second resistance (R2), 3rd resistor (R3), the 21st resistance (R21), the 22nd resistance (R22), the 23rd resistance
(R23), the 25th resistance (R25), the 6th diode (D6), third polar capacitor (C3), the 15th polar capacitor (C15),
The positive and negative anodes correspondence of 5th polar capacitor (C5), the 4th capacitor (C4), the 15th polar capacitor (C15) is connected in parallel on third pole
Property capacitor (C3) positive and negative anodes on, one end of the first resistor (R1) is connect with the anode of third polar capacitor (C3), described
The positive terminal of the other end of first resistor (R1), second resistance (R2), 3rd resistor (R3) and the 5th polar capacitor (C5)
Between connect, the negative pole end of the 5th polar capacitor (C5) ground connection, the other end of the 22nd resistance (R22), second
It connects between 15 resistance (R25), the 23rd resistance (R23) three, one end ground connection of the 23rd resistance (R23),
3 ends of the transformer (L9) pass through between the 6th diode (D6), the 4th capacitor (C4) and the 21st resistance (R21) three
It is grounded after series connection, the 4 ends ground connection of the transformer (L9).
Wherein, the power supply chip circuit further includes having power regulation single-chip microcontroller (IC1), photoelectrical coupler (IC2), second
14 resistance (R24), the 19th resistance (R19), the 20th resistance (R20), resistance (R0), the 49th resistance (R49), the 5th
Resistance (R5), the 6th resistance (R6), the second diode (D2), the 39th diode (D39), field-effect tube (Q1), the change
3 ends of depressor (L9) are connect with 2 ends of field-effect tube (Q1), and 3 ends of the field-effect tube (Q1) pass through resistance (R0), respectively
Five resistance (R5) ground connection, 3 ends of the field-effect tube (Q1) are connect with the end CS of power regulation single-chip microcontroller (IC1), the field effect
1 end that (Q1) should be managed passes through the 49th resistance (R49), the 39th diode (D39) and power regulation single-chip microcontroller respectively
(IC1) the end GATE connection, the vdd terminal of the power regulation single-chip microcontroller (IC1) are grounded by the 6th resistance (R6), the power
The end the GND ground connection of single-chip microcontroller (IC1) is adjusted, the end FB of the power regulation single-chip microcontroller (IC1) passes through the 19th resistance respectively
(R19), the 20th resistance (R20) is connect with 3 ends of ground, the transformer (L9), the power regulation single-chip microcontroller (IC1)
The end DIM is connect by the 24th resistance (R24) with the C-terminal of photoelectrical coupler (IC2), the end E of the photoelectrical coupler (IC2)
Ground connection, the S termination signal ground wire of the photoelectrical coupler (IC2).
Using the above scheme, AD signal identification single-chip microcontroller (IC3) has digital circuit and changes power functions automatically, with number
The numerical value of variation is transmitted on power regulation single-chip microcontroller (IC1) by circuit linearity multiplying power changed power, realizes power regulation monolithic
The characteristics of machine (IC1) automatically adjusts the function of duty ratio, and realization can limit maximum output current, protection circuit, tool
There is the function of output short circuit protection, no-load protection, overpower protection；Output voltage is low, and in addition to not wearing shoes operation, output is touched
To will not electric people, even if not wearing shoes operation is also very slight electric people, safety coefficient is high.
Wherein, the model WS8125 of the power regulation single-chip microcontroller (IC1).
Embodiment of above is only that the preferred embodiment of utility model is described, not to the model of utility model
It encloses and is defined, under the premise of not departing from utility model design spirit, this field ordinary engineering and technical personnel is to utility model
The various changes and improvements made of technical solution, should all fall into the protection scope that claims of utility model determine.
Claims (6)
1. a kind of LED light strip driving circuit with automatic adjustment power has several resistance and lamp bead including internal parallel
External LED light strip, it is characterised in that: further include the AD letter for having the impedance for capableing of automatic identification resistance and adjusting its current duty cycle
Number identification circuit and the power supply chip circuit of power supply, the AD signal recognition circuit and external LED light are provided for external LED light strip
Connected with internal resistance, the AD signal recognition circuit and power supply chip circuit connection, the power supply chip circuit with it is external
LED light band connection.
2. a kind of LED light strip driving circuit with automatic adjustment power according to claim 1, it is characterised in that: institute
Stating AD signal recognition circuit includes AD signal identification single-chip microcontroller (IC3), the 28th resistance (R28), the 26th resistance
(R26), the 14th resistance (R14), the 9th capacitor (C9), the 28th resistance (R28) and AD signal identification single-chip microcontroller
(IC3) it connects, the 28th resistance (R28) connect with the resistance inside external LED light strip, the AD signal identification monolithic
Machine (IC3) is connect with the 26th resistance (R26), and the AD signal identification single-chip microcontroller (IC3) passes through the 14th resistance respectively
(R14), the 9th capacitor (C9) correspondence is connect with signal ground.
3. a kind of LED light strip driving circuit with automatic adjustment power according to claim 1, it is characterised in that: institute
Stating AD signal recognition circuit further includes having integrated package inductance coil (L3), three-terminal voltage-stabilizing pipe (KP1), twelfth resistor (R12),
11 diodes (D11), the 7th diode (D7), the 8th capacitor (C8), the 7th capacitor (C7), the AD signal identification single-chip microcontroller
(IC3) vdd terminal passes through the end CS after inductance coil (L3), twelfth resistor (R12) three series connection with three-terminal voltage-stabilizing pipe (KP1)
The vdd terminal of connection, the three-terminal voltage-stabilizing pipe (KP1) is connect by the 8th capacitor (C8) with the negative pole end of the 7th diode (D7),
The positive terminal of 7th diode (D7) with signal ground by connecting, the vdd terminal and the tenth of the three-terminal voltage-stabilizing pipe (KP1)
The negative pole end of one diode (D11) connects, and the positive terminal of the 11st diode (D11) passes through the 7th capacitor (C7) and signal
Ground wire connection.
4. a kind of LED light strip driving circuit with automatic adjustment power according to claim 1, it is characterised in that: institute
It includes transformer (L9), first resistor (R1), second resistance (R2), that state power supply chip circuit, which include the power supply chip circuit,
Three resistance (R3), the 21st resistance (R21), the 22nd resistance (R22), the 23rd resistance (R23), the 25th resistance
(R25), the 6th diode (D6), third polar capacitor (C3), the 15th polar capacitor (C15), the 5th polar capacitor (C5),
Four capacitors (C4), the corresponding positive and negative anodes for being connected in parallel on third polar capacitor (C3) of the positive and negative anodes of the 15th polar capacitor (C15)
On, one end of the first resistor (R1) is connect with the anode of third polar capacitor (C3), the first resistor (R1) it is another
It connects between end, second resistance (R2), 3rd resistor (R3) and the positive terminal of the 5th polar capacitor (C5), the 5th pole
Property capacitor (C5) negative pole end ground connection, the other end, the 25th resistance (R25), the 20th of the 22nd resistance (R22)
It connects between three resistance (R23) three, one end ground connection of the 23rd resistance (R23), 3 ends of the transformer (L9) lead to
It crosses between the 6th diode (D6), the 4th capacitor (C4) and the 21st resistance (R21) three after connecting and is grounded, the transformer
(L9) 4 ends ground connection.
5. a kind of LED light strip driving circuit with automatic adjustment power according to claim 4, it is characterised in that: institute
State power supply chip circuit further include have power regulation single-chip microcontroller (IC1), photoelectrical coupler (IC2), the 24th resistance (R24),
19th resistance (R19), the 20th resistance (R20), resistance (R0), the 49th resistance (R49), the 5th resistance (R5), the 6th
Resistance (R6), the second diode (D2), the 39th diode (D39), field-effect tube (Q1), 3 ends of the transformer (L9)
It is connect with 2 ends of field-effect tube (Q1), 3 ends of the field-effect tube (Q1) pass through resistance (R0) respectively, the 5th resistance (R5) connects
3 ends on ground, the field-effect tube (Q1) are connect with the end CS of power regulation single-chip microcontroller (IC1), 1 end of the field-effect tube (Q1)
It is connect respectively by the 49th resistance (R49), the 39th diode (D39) with power regulation single-chip microcontroller (IC1), the function
Rate adjusts single-chip microcontroller (IC1) and is grounded by the 6th resistance (R6), the end the GND ground connection of the power regulation single-chip microcontroller (IC1), described
Power regulation single-chip microcontroller (IC1) passes through the 19th resistance (R19), the 20th resistance (R20) and ground, the transformer (L9) respectively
The connection of 3 ends, the power regulation single-chip microcontroller (IC1) passes through the C-terminal of the 24th resistance (R24) and photoelectrical coupler (IC2)
Connection, the end the E ground connection of the photoelectrical coupler (IC2), the S termination signal ground wire of the photoelectrical coupler (IC2).
6. a kind of LED light strip driving circuit with automatic adjustment power according to claim 5, it is characterised in that: institute
State the model WS8125 of power regulation single-chip microcontroller (IC1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821216350.1U CN208572507U (en) | 2018-07-30 | 2018-07-30 | A kind of LED light strip driving circuit with automatic adjustment power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821216350.1U CN208572507U (en) | 2018-07-30 | 2018-07-30 | A kind of LED light strip driving circuit with automatic adjustment power |
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| Publication Number | Publication Date |
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| CN208572507U true CN208572507U (en) | 2019-03-01 |
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ID=65448857
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821216350.1U Active CN208572507U (en) | 2018-07-30 | 2018-07-30 | A kind of LED light strip driving circuit with automatic adjustment power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108834264A (en) * | 2018-07-30 | 2018-11-16 | 中山市蓝德电子有限公司 | A kind of LED light strip driving circuit with automatic adjustment power |
-
2018
- 2018-07-30 CN CN201821216350.1U patent/CN208572507U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108834264A (en) * | 2018-07-30 | 2018-11-16 | 中山市蓝德电子有限公司 | A kind of LED light strip driving circuit with automatic adjustment power |
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