CN108271297A - A kind of LED light intelligent drive circuit - Google Patents
A kind of LED light intelligent drive circuit Download PDFInfo
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- CN108271297A CN108271297A CN201810182399.8A CN201810182399A CN108271297A CN 108271297 A CN108271297 A CN 108271297A CN 201810182399 A CN201810182399 A CN 201810182399A CN 108271297 A CN108271297 A CN 108271297A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of LED light intelligent drive circuit, including：Alternating current input unit, rectification filtering unit, main power source pwm control circuit, main power source converter, secondary commutation circuit, constant-current control circuit, Intelligent treatment control circuit, shutdown control circuit, auxiliary power control circuit and adjusting control circuit；Alternating current input unit passes sequentially through current rectifying and wave filtering circuit, main power source pwm control circuit, main power source converter, secondary commutation circuit and constant-current control circuit and is connected to LED light；The output terminal of shutdown control circuit is connected to the power end of main power source pwm control circuit, respectively with the control terminal of constant-current control circuit and the control terminal of shutdown control circuit, adjusting control circuit communicated the output terminal of Intelligent treatment control circuit with Intelligent treatment control circuit.Auxiliary power control circuit micro power consumption in the present invention can make entire circuit be in standby mode, obtain extremely low stand-by power consumption by adjusting control circuit.
Description
Technical field
The present invention relates to LED lamp technical field, specially a kind of LED light intelligent drive circuit.
Background technology
LED lamp due to the advantage stablized with environmentally protective, high brightness, small power consumption, long lifespan, impact resistance and performance,
It is used widely in fields such as life household, school, hospital, traffic, advertisements；Although general LED lamp stand-by power consumption compared with
It is low, but the power conservation requirement of standby special low-power consumption cannot be met；Although common LED lamps and lanterns purposes is extensive simultaneously, cannot meet a
Property, intelligent Application.So need that some means is taken to provide special low-power consumption standby power supply to circuit in LED circuit, and
Nationality enters the LED circuit of intelligent multi-function tune tonal brightness, can flexibly switch personalized various modes, can conveniently be suitable for more
The LED circuit in kind field.
Invention content
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of energy-efficient standby spies simple in structure
Low-power dissipation power supply and the LED light intelligent drive circuit with intelligent multi-function tune tonal brightness.
To achieve the above object, the present invention provides following technical solution：
A kind of LED light intelligent drive circuit, including：Alternating current input unit, current rectifying and wave filtering circuit, main power source PWM control electricity
Road, main power source converter, secondary commutation circuit, constant-current control circuit, Intelligent treatment control circuit, shutdown control circuit, secondary electricity
Source control circuit and adjusting control circuit；
The alternating current input unit pass sequentially through current rectifying and wave filtering circuit, main power source pwm control circuit, main power source converter,
Secondary commutation circuit and constant-current control circuit are connected to LED light；The auxiliary power control circuit is Intelligent treatment control circuit
It powers with shutdown control circuit；The output terminal of the shutdown control circuit is connected to the power end of main power source pwm control circuit, institute
State the output terminal of Intelligent treatment control circuit respectively with the control terminal of constant-current control circuit and the control terminal of shutdown control circuit, institute
It states adjusting control circuit to be communicated with Intelligent treatment control circuit, so that adjusting control circuit passes through Intelligent treatment control circuit
Brightness is carried out to LED light by constant-current control circuit and colour temperature is adjusted, adjusting control circuit is made to pass through Intelligent treatment control circuit
By shutdown control circuit to being controlled whether the energization of main power source pwm control circuit, and then realize switching on and shutting down control.
Further, the alternating current input unit includes protective tube F1, thermistor NTC1 and attenuation electromagnetic interference letter
Number circuit, the attenuation electromagnetic interference signal circuit include common mode inductance FL1, safety capacitance CX1, common mode inductance FL2 and peace
Capacitance CX2 is advised, wherein, two input terminals of the common mode inductance FL1 are connected respectively by protective tube F1 with thermistor NTC1
To the zero curve and firewire of alternating current, two output terminals of the common mode inductance FL1 and two input terminals of common mode inductance FL2 are one by one
It is correspondingly connected with, two output terminals of the common mode inductance FL2 are connected to the input terminal of current rectifying and wave filtering circuit, the safety capacitance
The both ends of CX1 are respectively connected to two output terminals of common mode inductance FL1, and the both ends of the safety capacitance CX2 are respectively connected to altogether
Two output terminals of mould inductance FL2.
Further, the current rectifying and wave filtering circuit includes full-wave rectification bridge DB1 and π type filter circuit, the main power source
Converter is transformer T1, and the π types filter circuit includes capacitance C1, capacitance C2, I-shaped inductance L1, resistance RL, the all-wave
Two input terminals of rectifier bridge connect one to one with two output terminals of common mode inductance FL2；The output of the full-wave rectification bridge
End is connected to the first end of the armature winding of transformer T1 by I-shaped inductance L1, and the resistance RL is in parallel with I-shaped inductance L1；
One end of the capacitance C1 is connected between the output terminal of full-wave rectification bridge and I-shaped inductance L1, another termination of the capacitance C1
Ground；One end of the capacitance C2 is connected between the first end of the armature winding of I-shaped inductance L1 and transformer T1, the capacitance
The other end ground connection of C2.
Further, the main power source pwm control circuit include power-supply controller of electric U1, metal-oxide-semiconductor Q1, resistance R1, resistance R4,
Resistance RS1, capacitance C3, diode D3, the power-supply controller of electric U1 use chip MT7990, the power end of the chip MT7990
It is connected to by resistance R1 between the first end of the armature winding of I-shaped inductance L1 and transformer T1, the grid of the metal-oxide-semiconductor Q1
The driving end of chip MT7990 is connected to, the source electrode of the metal-oxide-semiconductor Q1 after resistance RS1 by being grounded, the drain electrode of the metal-oxide-semiconductor Q1
It is connected to the second end of the armature winding of transformer T1, one end after the resistance R4 and capacitance C3 parallel connections is connected to I-shaped inductance
Between the first end of the armature winding of L1 and transformer T1, the other end after parallel connection is connected to the cathode of diode D3, diode
The anode of D3 is connected to the second end of the armature winding of transformer T1.
Further, the secondary commutation circuit includes diode D5, resistance R11, capacitance C8, electrolytic capacitor C9 and is total to
Mould ring inductance FL3, the anode of the diode D5 are connected to the first end of the secondary windings of transformer T1, common mode ring inductance
Two input terminals of FL3 are respectively connected to the second end of the cathode of diode D5 and the secondary windings of transformer T1, the electricity
Both ends after resistance R11 and capacitance C8 series connection are respectively connected to the positive and negative electrode of diode D5, the both ends difference of the electrolytic capacitor C9
Two input terminals of common mode ring inductance FL3 are connected to, the output terminal of the common mode ring inductance FL3 is connected to current constant control electricity
The input terminal on road.
Further, the Intelligent treatment control circuit is 2.4G wireless modules, and the adjusting control circuit is distant for 2.4G
Device is controlled, the 2.4G remote controlers pass through 2.4G wireless network communications with 2.4G wireless modules.
Further, the 2.4G wireless modules are equipped with white light output terminal and warm light output terminal, and the LED light includes white light
LED light and warm light LED light, the constant-current control circuit include constant current chip U2 and constant current chip U3, resistance R13, resistance R17,
Diode D6, diode D7, resistance RS6, resistance RS7, electrolytic capacitor C15, electrolytic capacitor C121, inductance L2 and inductance L3, institute
Constant current chip U2 and constant current chip U3 is stated to be all connected with using the input terminal of SY8745, the constant current chip U2 and constant current chip U3
To the output terminal of common mode ring inductance FL3；The signal input control end of the constant current chip U2 is connected to white light by resistance R13
Output terminal, the power switch signal output terminal of the constant current chip U2 is connected to the cathode of white LED lamp by inductance L2, described
The output electric current measure foot of constant current chip U2 is connected to the anode of white LED lamp, and the anode of the diode D6 is connected to constant current
Between the power switch signal output terminal of chip U2 and inductance L2, the cathode of the diode D6 is connected to perseverance by resistance RS6
The current sample input terminal of chip U2 is flowed, the positive and negative anodes of the electrolytic capacitor C15 are respectively connected to the positive and negative electrode of white LED lamp；
The signal input control end of the constant current chip U3 is connected to warm light output terminal, the electricity of the constant current chip U3 by resistance R17
Source switch signal output end is connected to the cathode of warm light LED light, the output electric current measure of the constant current chip U3 by inductance L3
Foot is connected to the anode of warm light LED light, and the anode of the diode D7 is connected to the power switch signal output of constant current chip U3
Between end and inductance L3, the cathode of the diode D7 is connected to the current sample input terminal of constant current chip U3 by resistance RS7,
The positive and negative anodes of the electrolytic capacitor C21 are respectively connected to the positive and negative electrode of warm light LED light.
Further, the auxiliary power control circuit includes diode D8, resistance R21, power supply control chip U4, transformer
T2, voltage stabilizing chip U6, diode D11 and electrolytic capacitor C26；The anode of the diode D8 is connected to the output of full-wave rectification bridge
End, the cathode of diode D8 are connected to the first end of the armature winding of transformer T2, and the power supply control chip U4 uses chip
FT838NB1, the voltage stabilizing chip U6 use chip HT7533, and the power end of the power supply control chip U4 is connected by resistance R21
The cathode of diode D8 is connected to, the output terminal of the power supply control chip U4 is connected to the second of the armature winding of transformer T2
End；The first end of the secondary windings of the transformer T2 is connected to the anode of diode D11, the power supply of the shutdown control circuit
The input terminal of end and voltage stabilizing chip U6 are connected to the cathode of diode D11, and the anode of the electrolytic capacitor C26 is connected to two
The second end of the cathode of pole pipe D11, the cathode of electrolytic capacitor C26 and the secondary windings of transformer T2 is grounded, the voltage stabilizing
The output terminal of chip U6 is connected to the power end of 2.4G wireless modules.
Further, the auxiliary power control circuit further includes diode D10, electrolytic capacitor C22, resistance R23, capacitance
The anode of C23 and diode D9, the diode D9 be connected to power supply control chip U4 output terminal and transformer T2 just
Between the second end of grade winding, one end after the resistance R23 and capacitance C23 parallel connections is connected to the cathode and transformation of diode D8
Between the first end of the armature winding of device T2, the other end after resistance R23 and capacitance C23 parallel connections is connected to the negative of diode D9
Pole, the anode of the diode D10 are connected to the first end of the auxiliary winding of transformer T2, and the cathode of the diode D10 connects
It is connected between the power end of power supply control chip U4 and resistance R21, the second end ground connection of the auxiliary winding of the transformer T2, institute
The anode for stating electrolytic capacitor C22 is connected between the first end of the cathode of diode D8 and the armature winding of transformer T2, described
The cathode ground connection of electrolytic capacitor C22.
Further, the shutdown control circuit includes diode D12, diode D13, resistance R28, triode Q2, light
The anode of coupling OP1 and resistance R27, the diode D12 and diode D13 are respectively connected to white light output terminal and warm light output
The cathode of end, the diode D12 and diode D13 are connected to the base stage of triode Q2, the triode by resistance R28
The emitter ground connection of Q2, the collector of the triode Q2 are connected to diode by the photophore and resistance R27 of optocoupler OP1
The cathode of D11, the receiver of the optocoupler OP1 are connected between the power end of the chip MT7990 and resistance R1.
Compared with prior art, LED light intelligent drive circuit of the present invention, advantage are：
1. constant-current control circuit can supply, LED light source is more stable, the smaller working condition electric current of current ripples.
2. auxiliary power control circuit micro power consumption provides working power for Intelligent treatment control circuit and shutdown control circuit
Voltage, and pass through wireless remotely-controlled or have line control circuit that LED circuit can be made to be in standby mode, and obtain extremely low standby work(
Consumption.
3. Intelligent treatment control circuit coordinates adjusting control circuit, it can flexibly switch personalized a variety of application models.
Description of the drawings
Fig. 1 is the structural principle block diagram of LED light intelligent drive circuit of the present invention；
Fig. 2 is the structure principle chart of LED light intelligent drive circuit of the present invention.
In figure：1st, alternating current input unit；2nd, current rectifying and wave filtering circuit；3rd, main power source pwm control circuit；4th, main power source converts
Device；5th, secondary commutation circuit；6th, constant-current control circuit；7th, Intelligent treatment control circuit；8th, shutdown control circuit；9th, auxiliary power control
Circuit processed；10th, adjusting control circuit.
Specific embodiment
In the following, with reference to attached drawing and specific embodiment, the present invention is described further, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
It please refers to shown in Fig. 1, a kind of LED light intelligent drive circuit, including：Alternating current input unit 1, current rectifying and wave filtering circuit 2,
Main power source pwm control circuit 3, main power source converter 4, secondary commutation circuit 5, constant-current control circuit 6, Intelligent treatment control circuit
7th, shutdown control circuit 8, auxiliary power control circuit 9 and adjusting control circuit 10；
The alternating current input unit 1 passes sequentially through current rectifying and wave filtering circuit 2, main power source pwm control circuit 3, main power source transformation
Device 4, secondary commutation circuit 5 and constant-current control circuit 6 are connected to LED light；The auxiliary power control circuit 9 is Intelligent treatment control
Circuit 7 and shutdown control circuit 8 processed are powered；The output terminal of the shutdown control circuit 8 is connected to main power source pwm control circuit 3
Power end, the output terminal of the Intelligent treatment control circuit 7 respectively with the control terminal of constant-current control circuit 6 and shutdown control electricity
The control terminal on road 8, the adjusting control circuit 10 is communicated with Intelligent treatment control circuit 7, so that adjusting control circuit 10
Brightness is carried out to LED light by constant-current control circuit 6 by Intelligent treatment control circuit 7 and colour temperature is adjusted, makes adjusting control electric
Road 10 carries out whether passing through energization of the shutdown control circuit 8 to main power source pwm control circuit 3 by Intelligent treatment control circuit 7
Control, and then realize switching on and shutting down control.
Its operation principle is：Input voltage (220V alternating currents) enters from alternating current input unit 1, passes through current rectifying and wave filtering circuit
2 start main power source pwm control circuit 3, and combine main power source converter 4 (using pulse transformer) work and be transferred to secondary commutation
5 rectification of circuit supplies the state current of LED stabilizations by constant-current control circuit 6 after rectification；Electricity is controlled by Intelligent treatment simultaneously
Intellectualized LED light modulation toning is implemented on road 7, and control mode is realized that adjusting control circuit 10 can be adopted by adjusting control circuit 10
With wireless remotely-controlled control circuit, can also use has line control circuit；On the other hand electricity is controlled by auxiliary power by line voltage
Road 9 is Intelligent treatment control circuit 7, shutdown control circuit 8 is powered, and auxiliary power control circuit 9 is after implementing shutdown to LED light
The LED light intelligent drive circuit provides the stand-by power supply with special low-power consumption that still can be worked normally.
Specifically, it please refers to shown in Fig. 2, the alternating current input unit 1 includes protective tube F1, thermistor NTC1 and declines
Powered down magnetic disturbance signal circuit, the attenuation electromagnetic interference signal circuit include common mode inductance FL1, safety capacitance CX1, common mode electricity
Feel FL2 and safety capacitance CX2, wherein, two input terminals of the common mode inductance FL1 pass through protective tube F1 and temperature-sensitive electricity respectively
Resistance NTC1 be connected on the zero curve and firewire of alternating current, two output terminals of the common mode inductance FL1 with two of common mode inductance FL2
Input terminal connects one to one, and two output terminals of the common mode inductance FL2 are connected to the input terminal of current rectifying and wave filtering circuit 2,
The both ends of the safety capacitance CX1 are respectively connected to two output terminals of common mode inductance FL1, the both ends of the safety capacitance CX2
It is respectively connected to two output terminals of common mode inductance FL2.
The current rectifying and wave filtering circuit 2 includes full-wave rectification bridge DB1 and π type filter circuit, the main power source converter 4
For transformer T1, the π types filter circuit includes capacitance C1, capacitance C2, I-shaped inductance L1, resistance RL, the full-wave rectification bridge
Two output terminals of two input terminals and common mode inductance FL2 connect one to one；The output terminal of the full-wave rectification bridge passes through
I-shaped inductance L1 is connected to the first end of the armature winding of transformer T1, and the resistance RL is in parallel with I-shaped inductance L1；The electricity
The one end for holding C1 is connected between the output terminal of full-wave rectification bridge and I-shaped inductance L1, the other end ground connection of the capacitance C1；Institute
Between the first end of armature winding that the one end for stating capacitance C2 is connected to I-shaped inductance L1 and transformer T1, the capacitance C2's is another
One end is grounded.π types filter circuit can provide better filter effect for circuit.
The main power source pwm control circuit 3 using low reactive loss, reduce harmonic distortion, active filter circuit improves
The power factor of power supply, makes power factor be increased to more than 0.9, including power-supply controller of electric U1, metal-oxide-semiconductor Q1, resistance R1, resistance
R4, resistance RS1, capacitance C3, diode D3, the power-supply controller of electric U1 use chip MT7990, the electricity of the chip MT7990
It is described between the first end of armature winding that source (third pin) is connected to I-shaped inductance L1 and transformer T1 by resistance R1
The grid of metal-oxide-semiconductor Q1 is connected to the driving end (the 5th pin) of chip MT7990, and the source electrode of the metal-oxide-semiconductor Q1 passes through resistance RS1
After be grounded, the drain electrode of the metal-oxide-semiconductor Q1 is connected to the second end of the armature winding of transformer T1, and the resistance R4 and capacitance C3 are simultaneously
One end after connection is connected between the first end of the armature winding of I-shaped inductance L1 and transformer T1, the other end connection after parallel connection
To the cathode of diode D3, the anode of diode D3 is connected to the second end of the armature winding of transformer T1.MT7990 chips
5th foot output driving metal-oxide-semiconductor Q1 carries out power amplification, and diode D3, capacitance C3 and resistance R4 compositions absorb ripple circuit.Separately
Outside, which is additionally provided with self-powered circuit, which includes diode D2 and capacitance C5,
Wherein, the anode of diode D2 is connected to first end (the second of the auxiliary winding of transformer T1 of the auxiliary winding of transformer T1
End ground connection), the cathode of diode D2 is connected to the power end of chip MT7990, and diode D2 is for the output to auxiliary winding
Voltage carries out rectification to power for chip MT7990, and one end of capacitance C5 is connected to the cathode of diode D2, and other end ground connection is used
It is filtered in the output of diode D2.
Transformer T1 uses high-frequency pulse transformer, and high-frequency vibration state, transformer are operated in reference to chip MT7990
On the one hand T1 provides self-powered for the third pin of chip MT7990, on the other hand transformation is coupled to secondary windings through secondary commutation
It powers after circuit 5 and constant-current control circuit 6 for LED light.
The secondary commutation circuit 5 includes diode D5, resistance R11, capacitance C8, electrolytic capacitor C9 and common mode magnet ring electricity
Feel FL3, the anode of the diode D5 is connected to the first end of the secondary windings of transformer T1, and the two of common mode ring inductance FL3
A input terminal is respectively connected to the second end of the cathode of diode D5 and the secondary windings of transformer T1, the resistance R11 and
Both ends after capacitance C8 series connection are respectively connected to the positive and negative electrode of diode D5, and the both ends of the electrolytic capacitor C9 are connected to
Two input terminals of common mode ring inductance FL3, the output terminal of the common mode ring inductance FL3 are connected to constant-current control circuit 6
Input terminal.Diode D5 uses fast recovery diode, the high-frequency impulse by secondary windings output by diode D5 rectifications and
DC voltage, resistance R11 and capacitance C8 series connection are obtained after electrolytic capacitor C9 filtering for absorbing high frequency ripple, common mode ring inductance
FL3 is used as inhibiting electromagnetic interference.
As a preferred embodiment, the Intelligent treatment control circuit 7 be 2.4G wireless modules, the adjusting control circuit
10 be 2.4G remote controlers, and the 2.4G remote controlers pass through 2.4G wireless network communications with 2.4G wireless modules.It is of course also possible to it adopts
The communication both realized with other wireless (such as infrared etc.) or wired mode, 2.4G wireless modules may be used nRF2401,
The integrated chips such as CC2500, A7105.
Further, the 2.4G wireless modules are equipped with white light output terminal and warm light output terminal, and the LED light includes white light
LED light and warm light LED light, the constant-current control circuit 6 are adopted as two-way, respectively drive white LED lamp and warm light LED light.Tool
Body, constant-current control circuit 6 includes constant current chip U2 and constant current chip U3, resistance R13, resistance R17, diode D6, diode
D7, resistance RS6, resistance RS7, electrolytic capacitor C15, electrolytic capacitor C121, inductance L2 and inductance L3, the constant current chip U2 and perseverance
Stream chip U3 is connected to common mode ring inductance using the input terminal of SY8745, the constant current chip U2 and constant current chip U3
The output terminal of FL3；The signal input control end of the constant current chip U2 is connected to white light output terminal, the perseverance by resistance R13
The power switch signal output terminal of stream chip U2 is connected to the cathode of white LED lamp by inductance L2, the constant current chip U2's
Output electric current measure foot (the 6th pin) is connected to the anode of white LED lamp, and the anode of the diode D6 is connected to constant current core
Between the power switch signal output terminal of piece U2 and inductance L2, the cathode of the diode D6 is connected to constant current by resistance RS6
The current sample input terminal of chip U2, the positive and negative anodes of the electrolytic capacitor C15 are respectively connected to the positive and negative electrode of white LED lamp.Two
Pole pipe D6 is fly-wheel diode, and inductance L2 is energy storage inductor, and resistance RS6 is output to the electric current of white LED lamp, electrolysis for adjusting
Capacitance C15 is output filter capacitor.
Similarly, the signal input control end of the constant current chip U3 is connected to warm light output terminal by resistance R17, described
The power switch signal output terminal of constant current chip U3 is connected to the cathode of warm light LED light, the constant current chip U3 by inductance L3
Output electric current measure foot (the 6th pin) be connected to the anode of warm light LED light, the anode of the diode D7 is connected to constant current
Between the power switch signal output terminal of chip U3 and inductance L3, the cathode of the diode D7 is connected to perseverance by resistance RS7
The current sample input terminal of chip U3 is flowed, the positive and negative anodes of the electrolytic capacitor C21 are respectively connected to the positive and negative electrode of warm light LED light.
Diode D7 is fly-wheel diode, and inductance L3 is energy storage inductor, and resistance RS7 is output to the electric current of warm light LED light, electricity for adjusting
It is output filter capacitor to solve capacitance C21.
2.4G modules are operated in the whole world and exempt to apply in the range of ISM channels 2400M-2483M, realize booting automatic frequency sweep work(
Can, signal path is configured, and receiving unit and remote control unit have the function of a key automatically to code, it is easy to use；2.4G mould
The operating voltage of block is 3.3V, has reception semiotic function, correspondence is transferred to constant current control respectively for white light output terminal and warm light output terminal
Input resistance R13 and R17 in circuit 6 processed, to realize that multi-functional brightness and colour temperature are adjusted.2.4G remote controller main functions are logical
The 2.4G a variety of different control data of this frequency channel transmission are crossed to implement a variety of different LED light control patterns, are embodied flexible
Switch personalized various modes, embody the advantage of multiple fields LED lamp application.
The auxiliary power control circuit 9 includes diode D8, resistance R21, power supply control chip U4, transformer T2, voltage stabilizing
Chip U6, diode D11 and electrolytic capacitor C26；The anode of the diode D8 is connected to the output terminal of full-wave rectification bridge (certainly
Rectification circuit can also be carried, is directly connected on alternating current input unit 1 or alternating current), the cathode of diode D8 is connected to transformation
The first end of the armature winding of device T2, the power supply control chip U4 use chip FT838NB1, and chip FT838NB1 is in itself
Small power consumption can realize that special low-power consumption provides primary condition for complete machine, and the voltage stabilizing chip U6 uses chip HT7533, the power supply
The power end of control chip U4 is connected to the cathode of diode D8, the output terminal of the power supply control chip U4 by resistance R21
It is connected to the second end of the armature winding of transformer T2；The first end of the secondary windings of the transformer T2 is connected to diode
The anode of D11, the power end of the shutdown control circuit 8 and the input terminal of voltage stabilizing chip U6 are connected to diode D11's
Cathode, the anode of the electrolytic capacitor C26 are connected to the cathode of diode D11, the cathode of electrolytic capacitor C26 and transformer T2
The second end of secondary windings be grounded, the output terminal of the voltage stabilizing chip U6 is connected to the power end of 2.4G wireless modules.
Further, the auxiliary power control circuit 9 further includes diode D10, electrolytic capacitor C22, resistance R23, capacitance
The anode of C23 and diode D9, the diode D9 be connected to power supply control chip U4 output terminal and transformer T2 just
Between the second end of grade winding, one end after the resistance R23 and capacitance C23 parallel connections is connected to the cathode and transformation of diode D8
Between the first end of the armature winding of device T2, the other end after resistance R23 and capacitance C23 parallel connections is connected to the negative of diode D9
Pole, the anode of the diode D10 are connected to the first end of the auxiliary winding of transformer T2, and the cathode of the diode D10 connects
It is connected between the power end of power supply control chip U4 and resistance R21, the second end ground connection of the auxiliary winding of the transformer T2, institute
The anode for stating electrolytic capacitor C22 is connected between the first end of the cathode of diode D8 and the armature winding of transformer T2, described
The cathode ground connection of electrolytic capacitor C22.
Capacitance C22 is filter filter effect, and resistance R21 is startup effect, and power supply control chip U4 is the logical resistance R21 that starts from electricity
The power end (third pin) of source control chip U4 starts work, output terminal (the seven, the eight pins) output, and combination high-frequency impulse becomes
Depressor T2, auxiliary power control circuit 9 are started to work, circuit work after, high-frequency pulse transformer T2 on the one hand by its auxiliary around
Group and diode D10 provide normal confession piezoelectric voltage, resistance R23, capacitance C23, diode D9 groups for power supply control chip U4
Into high-frequency impulse ripple absorption circuit, diode D10 is power supply control chip U4 self-powered rectifier diodes, and capacitance C24 is certainly
Power supply filter capacitor；On the other hand, high-frequency pulse transformer T2 converts coupling to secondary windings and by diode D11 rectifications, capacitance
Output 5V DC voltages are connected to the input terminal IN of voltage stabilizing chip U6 after C26 filtering, and DC voltage is through voltage stabilizing chip U6 voltage stabilizings
Afterwards, it normally works with regard to stable 3.3V DC voltages supply 2.4G wireless modules can be obtained, the input of voltage stabilizing chip U6 and defeated
Outlet is respectively arranged with capacitance C28 and capacitance C29, and one end of capacitance C28 and capacitance C29 are respectively connected to the defeated of voltage stabilizing chip U6
Enter and output terminal, the other end are grounded, capacitance C28 and capacitance C29 are filtered for voltage circuit.
The shutdown control circuit 8 include diode D12, diode D13, resistance R28, triode Q2, optocoupler OP1 and
The anode of resistance R27, the diode D12 and diode D13 are respectively connected to white light output terminal and warm light output terminal, and described two
The cathode of pole pipe D12 and diode D13 are connected to the base stage of triode Q2, the transmitting of the triode Q2 by resistance R28
Pole is grounded, and the collector of the triode Q2 is connected to the negative of diode D11 by the photophore and resistance R27 of optocoupler OP1
Pole, one end of the receiver of the optocoupler OP1 are connected to the power end of the chip MT7990, and the other end is connected to resistance R1's
The other end (other end here refers to separate one end with the L1 connections of I-shaped inductance) is between the cathode of diode D2.It is just normally opened
In the case of machine, at least there are one for high voltage, NPN triode Q2 is in and leads for the white light output terminal and warm light output terminal of 2.4G modules
Logical state, the photophore hair of optocoupler OP1, is received by the receiver of optocoupler OP1, and optocoupler OP1 conductings make main power source PWM control electricity
MT7990 self-powereds in road maintain normal working condition, and when off-mode, white light output terminal and warm light output terminal are defeated simultaneously
Go out for low-voltage, NPN triode Q2 and optocoupler OP1 are in cut-off state, and optocoupler OP1 cut-offs make main power source pwm control circuit
In MT7990 self-powereds operational failure and be stopped, main circuit is in off-mode；Make complete machine is standby to obtain special low-power consumption
Power save mode.
Circuit structure of the present invention is simple, easy to use, and prominent LED circuit feature：With the energy saving of standby special low-power consumption
State, it may have the flexibly personalized various modes of switching have very big practicability on multiple fields；Above in conjunction with attached drawing
The embodiment of the present invention is explained in detail, but the present invention is not limited to above-described embodiment, in those of ordinary skill in the art
It, can also various changes can be made under the premise of present inventive concept is not departed from the knowledge being had.
Claims (10)
1. a kind of LED light intelligent drive circuit, it is characterised in that including：Alternating current input unit, rectification filtering unit, main power source
Pwm control circuit, main power source converter, secondary commutation circuit, constant-current control circuit, Intelligent treatment control circuit, shutdown control
Circuit, auxiliary power control circuit and adjusting control circuit；
The alternating current input unit passes sequentially through current rectifying and wave filtering circuit, main power source pwm control circuit, main power source converter, secondary
Rectification circuit and constant-current control circuit are connected to LED light；The auxiliary power control circuit is Intelligent treatment control circuit and pass
Machine control circuit is powered；The output terminal of the shutdown control circuit is connected to the power end of main power source pwm control circuit, the intelligence
Can control and treatment circuit output terminal respectively with the control terminal of constant-current control circuit and the control terminal of shutdown control circuit, the tune
Section control circuit is communicated with Intelligent treatment control circuit, so that adjusting control circuit is passed through by Intelligent treatment control circuit
Constant-current control circuit carries out LED light brightness and colour temperature is adjusted, and adjusting control circuit is made to pass through Intelligent treatment control circuit and is passed through
Shutdown control circuit realizes switching on and shutting down control to being controlled whether the energization of main power source pwm control circuit.
2. LED light intelligent drive circuit according to claim 1, it is characterised in that：The alternating current input unit includes protecting
Dangerous pipe F1, thermistor NTC1 and attenuation electromagnetic interference signal circuit, the attenuation electromagnetic interference signal circuit include common mode
Inductance FL1, safety capacitance CX1, common mode inductance FL2 and safety capacitance CX2, wherein, two inputs of the common mode inductance FL1
End is connected to by protective tube F1 and thermistor NTC1 on the zero curve and firewire of alternating current respectively, and the two of the common mode inductance FL1
Two input terminals of a output terminal and common mode inductance FL2 connect one to one, and two output terminals of the common mode inductance FL2 connect
The input terminal of current rectifying and wave filtering circuit is connected to, the both ends of the safety capacitance CX1 are respectively connected to two outputs of common mode inductance FL1
End, the both ends of the safety capacitance CX2 are respectively connected to two output terminals of common mode inductance FL2.
3. LED light intelligent drive circuit according to claim 2, it is characterised in that：The current rectifying and wave filtering circuit includes complete
Wave rectifier bridge DB1 and π type filter circuit, the main power source converter are transformer T1, and the π types filter circuit includes electricity
Hold C1, capacitance C2, I-shaped inductance L1, resistance RL, two input terminals of the full-wave rectification bridge and two of common mode inductance FL2 it is defeated
Outlet connects one to one；The output terminal of the full-wave rectification bridge is connected to the armature winding of transformer T1 by I-shaped inductance L1
First end, the resistance RL is in parallel with I-shaped inductance L1；One end of the capacitance C1 is connected to the output terminal of full-wave rectification bridge
Between I-shaped inductance L1, the other end ground connection of the capacitance C1；One end of the capacitance C2 is connected to I-shaped inductance L1 and change
Between the first end of the armature winding of depressor T1, the other end ground connection of the capacitance C2.
4. LED light intelligent drive circuit according to claim 3, it is characterised in that：The main power source pwm control circuit packet
Include power-supply controller of electric U1, metal-oxide-semiconductor Q1, resistance R1, resistance R4, resistance RS1, capacitance C3, diode D3, the power-supply controller of electric U1
Using chip MT7990, the power end of the chip MT7990 is connected to the first of I-shaped inductance L1 and transformer T1 by resistance R1
Between the first end of grade winding, the grid of the metal-oxide-semiconductor Q1 is connected to the driving end of chip MT7990, the source of the metal-oxide-semiconductor Q1
By being grounded after resistance RS1, the drain electrode of the metal-oxide-semiconductor Q1 is connected to the second end of the armature winding of transformer T1, the electricity for pole
It is in parallel between hindering the first end of armature winding that one end after R4 and capacitance C3 parallel connections is connected to I-shaped inductance L1 and transformer T1
The other end afterwards is connected to the cathode of diode D3, and the anode of diode D3 is connected to the second of the armature winding of transformer T1
End.
5. LED light intelligent drive circuit according to claim 4, it is characterised in that：The secondary commutation circuit includes two
Pole pipe D5, resistance R11, capacitance C8, electrolytic capacitor C9 and common mode ring inductance FL3, the anode of the diode D5 are connected to
The first end of the secondary windings of transformer T1, two input terminals of common mode ring inductance FL3 are respectively connected to the negative of diode D5
Both ends after the second end of the secondary windings of pole and transformer T1, the resistance R11 and capacitance C8 series connection are respectively connected to two
The positive and negative electrode of pole pipe D5, the both ends of the electrolytic capacitor C9 are connected to two input terminals of common mode ring inductance FL3, institute
The output terminal for stating common mode ring inductance FL3 is connected to the input terminal of constant-current control circuit.
6. LED light intelligent drive circuit according to claim 5, it is characterised in that：The Intelligent treatment control circuit is
2.4G wireless modules, the adjusting control circuit are 2.4G remote controlers, and the 2.4G remote controlers pass through with 2.4G wireless modules
2.4G wireless network communication.
7. LED light intelligent drive circuit according to claim 6, it is characterised in that：The 2.4G wireless modules are equipped with white
Light output end and warm light output terminal, the LED light include white LED lamp and warm light LED light, and the constant-current control circuit includes perseverance
Flow chip U2 and constant current chip U3, resistance R13, resistance R17, diode D6, diode D7, resistance RS6, resistance RS7, electrolysis electricity
Hold C15, electrolytic capacitor C121, inductance L2 and inductance L3, the constant current chip U2 and constant current chip U3 and use SY8745, it is described
The input terminal of constant current chip U2 and constant current chip U3 are connected to the output terminal of common mode ring inductance FL3；The constant current chip U2
Signal input control end white light output terminal is connected to by resistance R13, the power switch signal output of the constant current chip U2
End is connected to the cathode of white LED lamp by inductance L2, and the output electric current measure foot of the constant current chip U2 is connected to white light LEDs
The anode of lamp, the anode of the diode D6 are connected between the power switch signal output terminal of constant current chip U2 and inductance L2,
The cathode of the diode D6 is connected to the current sample input terminal of constant current chip U2, the electrolytic capacitor C15 by resistance RS6
Positive and negative anodes be respectively connected to the positive and negative electrode of white LED lamp；The signal input control end of the constant current chip U3 passes through resistance
R17 is connected to warm light output terminal, and the power switch signal output terminal of the constant current chip U3 is connected to warm light LED by inductance L3
The cathode of lamp, the output electric current measure foot of the constant current chip U3 are connected to the anode of warm light LED light, and the diode D7 is just
Pole is connected between the power switch signal output terminal of constant current chip U3 and inductance L3, and the cathode of the diode D7 passes through resistance
RS7 is connected to the current sample input terminal of constant current chip U3, and the positive and negative anodes of the electrolytic capacitor C21 are respectively connected to warm light LED
The positive and negative electrode of lamp.
8. LED light intelligent drive circuit according to claim 7, it is characterised in that：The auxiliary power control circuit includes
Diode D8, resistance R21, power supply control chip U4, transformer T2, voltage stabilizing chip U6, diode D11 and electrolytic capacitor C26；Institute
The anode for stating diode D8 is connected to the output terminal of full-wave rectification bridge, the cathode of diode D8 be connected to transformer T2 it is primary around
The first end of group, the power supply control chip U4 use chip HT7533, institute using chip FT838NB1, the voltage stabilizing chip U6
The power end for stating power supply control chip U4 is connected to the cathode of diode D8 by resistance R21, the power supply control chip U4's
Output terminal is connected to the second end of the armature winding of transformer T2；The first end of the secondary windings of the transformer T2 is connected to two
The anode of pole pipe D11, the power end of the shutdown control circuit and the input terminal of voltage stabilizing chip U6 are connected to diode D11
Cathode, the anode of the electrolytic capacitor C26 is connected to the cathode of diode D11, the cathode and transformer of electrolytic capacitor C26
The second end of the secondary windings of T2 is grounded, and the output terminal of the voltage stabilizing chip U6 is connected to the power end of 2.4G wireless modules.
9. LED light intelligent drive circuit according to claim 7, it is characterised in that：The auxiliary power control circuit is also wrapped
Diode D10, electrolytic capacitor C22, resistance R23, capacitance C23 and diode D9, the anode of the diode D9 is included to be connected to
Between the second end of the output terminal of power supply control chip U4 and the armature winding of transformer T2, the resistance R23 and capacitance C23 is simultaneously
One end after connection is connected between the first end of the cathode of diode D8 and the armature winding of transformer T2, resistance R23 and capacitance
The other end after C23 parallel connections is connected to the cathode of diode D9, and the anode of the diode D10 is connected to the auxiliary of transformer T2
The first end of winding, the cathode of the diode D10 are connected between the power end of power supply control chip U4 and resistance R21, institute
State the second end ground connection of the auxiliary winding of transformer T2, the anode of the electrolytic capacitor C22 be connected to diode D8 cathode and
Between the first end of the armature winding of transformer T2, the cathode ground connection of the electrolytic capacitor C22.
10. LED light intelligent drive circuit according to claim 9, it is characterised in that：The shutdown control circuit includes two
Pole pipe D12, diode D13, resistance R28, triode Q2, optocoupler OP1 and resistance R27, the diode D12 and diode
The anode of D13 is respectively connected to white light output terminal and warm light output terminal, and the cathode of the diode D12 and diode D13 are logical
The base stage that resistance R28 is connected to triode Q2, the emitter ground connection of the triode Q2 are crossed, the collector of the triode Q2 leads to
It crosses the photophore of optocoupler OP1 and resistance R27 is connected to the cathode of diode D11, the receiver of the optocoupler OP1 is connected to institute
It states between the power end of chip MT7990 and resistance R1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810182399.8A CN108271297A (en) | 2018-03-06 | 2018-03-06 | A kind of LED light intelligent drive circuit |
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| CN201810182399.8A CN108271297A (en) | 2018-03-06 | 2018-03-06 | A kind of LED light intelligent drive circuit |
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| CN108271297A true CN108271297A (en) | 2018-07-10 |
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| CN201810182399.8A Pending CN108271297A (en) | 2018-03-06 | 2018-03-06 | A kind of LED light intelligent drive circuit |
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