CN108696967A - A kind of light modulation toning driving circuit of LED light - Google Patents
A kind of light modulation toning driving circuit of LED light Download PDFInfo
- Publication number
- CN108696967A CN108696967A CN201810562149.7A CN201810562149A CN108696967A CN 108696967 A CN108696967 A CN 108696967A CN 201810562149 A CN201810562149 A CN 201810562149A CN 108696967 A CN108696967 A CN 108696967A
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- 239000011324 bead Substances 0.000 claims abstract description 36
- 238000004804 winding Methods 0.000 claims abstract description 22
- 239000003086 colorant Substances 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims abstract description 9
- 239000004065 semiconductor Substances 0.000 claims description 26
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 7
- 230000003760 hair shine Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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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]
- H05B45/10—Controlling the intensity of the light
-
- 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]
- H05B45/20—Controlling the colour of the light
-
- 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]
Abstract
The present invention relates to a kind of light modulation of LED light mix colours driving circuit, the technical solution used for:Non-isolated constant-current switch power source input terminal connects city's alternating current, and non-isolated constant-current switch power source output end is separately connected two groups of LED lamp beads, and non-isolated constant-current switch power source includes transformer primary side winding and supports the constant current chip of constant current constant voltage pattern;Photochromic control module power supply circuit gives the power supply of photochromic control module after taking electricity from non-isolated constant-current switch power source transformer primary side winding by transformer secondary winding;The PWM output ends of photochromic control module and the input terminal of color temperature controlling circuit connect, and the output end of photochromic control module is connect with non-isolated constant-current switch power source;The output end of color temperature controlling circuit is connect with two groups of LED lamp beads respectively.The present invention uses non-isolated constant-current switch power source, effectively increases power-efficient, constant pressure Switching Power Supply is removed, and is changed to simple linear power supply circuit, effectively reduces manufacturing cost.
Description
Technical field
The present invention relates to technical field of LED illumination, refer specifically to a kind of light modulation toning driving circuit of LED light.
Background technology
The light modulation toning driving circuit of existing LED light generally comprises two kinds:One kind is as shown in Figure 1, using multiple-pole switch electricity
Source, i.e. prime use constant pressure Switching Power Supply, rear class to control the LED light of two groups of different-colours respectively using two-way constant-current switch power source
Pearl, current constant control LED lamp bead after first constant pressure, and other constant pressure Switching Power Supply need to be used to give the power supply of photochromic control module, light
Color control module is connected with the PWM of two-way constant-current switch power source mouths respectively, and is individually carried out to the LED lamp bead of two groups of different-colours
Light modulation and toning.It is another as shown in Fig. 2, using isolation Fly-Back constant-current switch power sources, be followed by two groups of different-colours
LED lamp bead, while also in addition using constant pressure Switching Power Supply and powering to photochromic control module, photochromic control module and constant current chip
Circuit connects, and the LED lamp bead of two groups of different-colours is individually dimmed and mixed colours.
Above two circuit all has the following problems:(1)Two kinds of light modulation toning driving circuits are non-isolated with routine
BUCK or BUCK-BOOST Switching Power Supplies compare, and efficiency is relatively low, to be improved;(2)Two kinds of light modulation toning driving circuits are adopted
It is powered to intelligent control module with constant pressure Switching Power Supply, cost is higher.In view of above-mentioned the deficiencies in the prior art, this case
It gives birth to therefrom.
Invention content
The light modulation toning driving circuit that the present invention provides a kind of LED light effectively raises in terms of existing technologies
Power-efficient, and reduce manufacturing cost.
To achieve the goals above, the technical solution adopted in the present invention is:
A kind of light modulation toning driving circuit of LED light, including non-isolated constant-current switch power source, the photochromic control for brightness adjustment control
Molding block, photochromic control module power supply circuit, the LED light different for the color temperature controlling circuit of color temperature adjustment and two groups of colour temperatures
Pearl;The non-isolated constant-current switch power source input terminal connects city's alternating current, non-isolated constant-current switch power source output end difference
Two groups of LED lamp beads are connected, non-isolated constant-current switch power source includes transformer primary side winding and support constant current constant voltage pattern
Constant current chip;The photochromic control module power supply circuit is by transformer secondary winding from non-isolated constant-current switch power source transformation
Device primary side winding is powered after taking electricity to photochromic control module;The PWM output ends and color temperature controlling circuit of the photochromic control module
Input terminal connection, the output end of photochromic control module connect with non-isolated constant-current switch power source;The color temperature controlling circuit
Output end connect respectively with two groups of LED lamp beads.
The non-isolated constant-current switch power source uses BUCK constant-current switch power sources, or is opened using BUCK-BOOST constant currents
Powered-down source.
The photochromic control module power supply circuit is steady using linear power supply circuit, including filter capacitor, constant-current source and two-stage
Volt circuit, transformer secondary winding carries out rectification, filtering after taking electricity, and by constant-current source output constant current, the constant current of output is passed through
It powers to photochromic control module after two-stage voltage stabilizing.
The level-one regulator circuit uses zener diode, two level regulator circuit to use three-terminal regulator chip.
The constant current of the constant-current source output carries out voltage stabilizing again after first passing through filtering.
The color temperature controlling circuit includes three metal-oxide-semiconductors Q1, Q2 and Q3, and Q2 control one of which LED lamp beads, Q3 controls are separately
One group of LED lamp bead;When color temperature controlling circuit inputs 100% duty ratio, Q1 conductings, Q2 cut-offs, Q3 conductings, the LED light being connect with Q3
Pearl shines;When color temperature controlling circuit inputs 0% duty ratio, Q1 cut-offs, Q2 is connected, and Q3 cut-offs, the LED lamp bead being connect with Q2 shines;
When the duty ratio of color temperature controlling circuit input is between 0%-100%, Q2 and Q3 high frequency alternate conduction colour mixtures shine.
Light modulation toning driving circuit provided by the invention, using non-isolated constant-current switch power source, compared to the prior art
The middle Fly-Back constant-current switch power sources using isolation can effectively improve power-efficient, and constant pressure in the prior art is switched electricity
Source removes, and is changed to use relatively simple linear power supply circuit, effectively reduces manufacturing cost.
The present invention is further elaborated below by way of the drawings and specific embodiments.
Description of the drawings:
Fig. 1 is to use multi-stage switching power supply light modulation toning driving circuit in the prior art;
Fig. 2 is that the Fly-Back constant-current switch power sources in the prior art using isolation dim toning driving circuit;
Fig. 3 is the light modulation toning driving circuit block diagram of the present embodiment;
Fig. 4 is the light modulation toning driving circuit figure of the present embodiment;
Fig. 5 is photochromic control module power supply circuit in the present embodiment;
Fig. 6 is the circuit diagram of the present embodiment neutral color temperature control circuit.
Specific implementation mode:
The present embodiment provides a kind of light modulation of LED light toning driving circuits, including non-isolated constant-current switch power source, photochromic control
Module, photochromic control module power supply circuit, color temperature controlling circuit and the different LED lamp bead of two groups of colour temperatures, one of which is warm
Colour temperature LED lamp bead, another group is cool colour temperature LED lamp bead.As shown in figure 3, non-isolated constant-current switch power source input terminal connects city
Alternating current, non-isolated constant-current switch power source output end are separately connected two groups of LED lamp beads, and non-isolated constant-current switch power source includes
Transformer primary side winding and the constant current chip for supporting constant current constant voltage pattern;Photochromic control module power supply circuit passes through transformer pair
Side winding gives the power supply of photochromic control module after taking electricity from non-isolated constant-current switch power source transformer primary side winding;Photochromic control mould
The PWM output ends of block and the input terminal of color temperature controlling circuit connect, and the output end of photochromic control module is opened with non-isolated constant current
Powered-down source connection;The output end of color temperature controlling circuit is connect with two groups of LED lamp beads respectively.
The physical circuit figure of the above-mentioned driving circuit provided is as shown in Figure 4, wherein non-isolated constant-current switch power source includes
Current rectifying and wave filtering circuit, transformer primary side winding, current constant control chip and peripheral circuit.In order to realize from constant-current switch power source transformation
Device primary side winding takes through vice-side winding supplies electricity to photochromic control module power supply, the constant current control used in non-isolated constant-current switch power source
Coremaking piece must support constant current constant voltage pattern, i.e., constant current mode is used when LED lamp bead is normally lighted, and extinguish in LED lamp bead disconnected
Constant voltage mode is used when opening.Only current constant control chip supports constant current constant voltage pattern, just photochromic control module can be made in different shapes
The vice-side winding that state can be transferred through transformer provides stable voltage.Therefore, constant-current switch power source non-isolated in the present embodiment
BUCK constant-current switch power sources may be used, or use BUCK-BOOST constant-current switch power sources.
Photochromic control module uses scheme in the prior art, and photochromic control module with constant-current switch power source by connecting
Connect and brightness adjustment controls carried out to two groups of LED lamp beads, photochromic control module exports different duty ratios to color temperature controlling circuit, for pair
Two groups of LED lamp beads carry out the adjusting control of colour temperature.Photochromic control module can pass through the nothings such as bluetooth, Zigbee by the prior art
Line mode connects terminal, is individually dimmed and is mixed colours by two groups of LED lamp beads of wireless terminal control mode pair, because it can be by
The prior art realizes its function, not in the research range of the application, therefore is not described in detail.
Linear power supply circuit is used to the circuit of photochromic control module power supply, as shown in figure 5, light
Color control module for power supply circuit includes that the vice-side winding of transformer, rectifier diode, filter capacitor, constant-current source, two-stage are steady
Volt circuit and resistance.Wherein, constant current tube may be used in constant-current source, can also use constant-current circuit.In two-stage regulator circuit
Level-one regulator circuit uses zener diode, second level regulator circuit to use three-terminal regulator chip, first order regulator circuit both ends
Voltage be more than second level regulator circuit both ends voltage.Above-mentioned power supply circuit is on the one hand logical using first constant current two-stage voltage stabilizing again
The constant current value of constant-current source can be reduced by crossing two-stage regulator circuit, and the overall efficiency of power supply is made to be promoted, and on the other hand use two-stage steady
The voltage value exported after volt circuit is more constant, and photochromic control module is allow to work normally.Specific circuit is as follows:Secondary side around
One end of group T1C is connect with the anode of rectifier diode D3, and the other end ground connection of vice-side winding T1C, rectifier diode D3's is negative
The input terminal V of pole and constant current tube U2inConnection, electrolytic capacitor EC2, constant current tube are parallel between the cathode and ground of rectifier diode D3
The output end V of U2outIt is connect with the anode of electrolytic capacitor EC3, the sampling end CS and output end V of constant current tube U2outBetween be connected with
Using resistance Rcs, the cathode ground connection of electrolytic capacitor EC3, zener diode ZD1 is connected in parallel on the both ends electrolytic capacitor EC3, three-terminal voltage-stabilizing
The input terminal V of chip U3inWith the output end V of constant current tube U2outConnection, the ground terminal GND ground connection of three-terminal regulator chip U3, output
Hold VoutIt is connect with one end of capacitance C7, common end is connected in photochromic control circuit, and the other end of capacitance C7 is connected to photochromic control
The ground terminal of circuit processed.The voltage and current inputted from transformer primary side winding T1A is after vice-side winding T1C through two pole of over commutation
Pipe D3 rectifications export to constant current tube U2, constant current tube U2 after electrolytic capacitor EC2 energy storage filtering and pass through sampling resistor RcsWhat adjusting was flowed through
Electric current, using being input to three-terminal regulator chip U3, three ends after electrolytic capacitor EC3 energy storage filtering and zener diode ZD1 voltage stabilizings
Voltage stabilizing chip U3 exports constant voltage and powers to photochromic control circuit.The above-mentioned power supply circuit construction provided is simple, therefore valence
Lattice are relatively low, simultaneously because the power supply circuit is using linear circuit, when input current is relatively low, power consumption is less, and efficiency is higher.
The circuit diagram of color temperature controlling circuit is as shown in fig. 6, include metal-oxide-semiconductor, zener diode, diode and resistance.It is photochromic
The PWM output ends of control module are connect after resistance R1 with the grid of metal-oxide-semiconductor Q1, and the source electrode of metal-oxide-semiconductor Q1 is connect by resistance R2
The common end on ground, the grid of metal-oxide-semiconductor Q2, resistance R3 and zener diode ZD1 cathode is connect with the drain electrode of metal-oxide-semiconductor Q1, resistance
The other end of R3 and the input terminal of LED load connect, the source electrode of metal-oxide-semiconductor Q2 and the anode and LED load of zener diode ZD1
Output end connection, between the drain electrode of metal-oxide-semiconductor Q2 and the input terminal of LED load connect LED warm colour temperature lamp beads, the leakage of metal-oxide-semiconductor Q2
Pole is also connect with the cathode of diode D1, anode and resistance R4, zener diode ZD2 cathode and the metal-oxide-semiconductor Q3 of diode D1
The connection of grid common end, the input terminal of the resistance R4 other ends and LED load connects, two pole of source electrode and voltage stabilizing of metal-oxide-semiconductor Q3
The anode of pipe ZD2 is connect with the output end of LED load, and it is cold that LED is connected between the drain electrode of metal-oxide-semiconductor Q3 and the input terminal of LED load
Colour temperature lamp bead.When photochromic control module exports 100% duty ratio, metal-oxide-semiconductor Q1 conductings, by the grounded-grid of metal-oxide-semiconductor Q2, metal-oxide-semiconductor
Q2 ends, and LED warm colour temperature lamp beads do not work, and the partial pressure of resistance R4 and zener diode ZD2 is input to the grid of metal-oxide-semiconductor Q3 at this time,
Metal-oxide-semiconductor Q3 is set to be connected, LED cool colour temperature lamp beads are lighted;When photochromic control module exports 0% duty ratio, metal-oxide-semiconductor Q1 cut-offs, at this time
The partial pressure of resistance R3 and zener diode ZD1 is input to the grid of metal-oxide-semiconductor Q2, so that metal-oxide-semiconductor Q2 is connected, LED warm colour temperature lamp bead points
It is bright, while the grid of metal-oxide-semiconductor Q3 is grounded by diode D1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3 cut-offs, LED cool colour temperature lamp beads do not work.When
When photochromic control module exports 0~100% duty ratio, metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 high frequency alternate conductions, LED warm colour temperature lamp beads and
LED cool colour temperature lamp bead high frequencies alternately switch, and realize that colour mixture shines.According to different conducting dutycycles, our needs can be obtained
Colour temperature.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, those of ordinary skill in the art are to this hair
Other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It should all cover in scope of the presently claimed invention.
Claims (6)
- The driving circuit 1. a kind of light modulation of LED light is mixed colours, it is characterised in that:Including non-isolated constant-current switch power source, for adjusting The photochromic control module of photocontrol, photochromic control module power supply circuit, for the color temperature controlling circuit of color temperature adjustment and two groups The different LED lamp bead of colour temperature;The non-isolated constant-current switch power source input terminal connects city's alternating current, non-isolated constant current switch Power output end is separately connected two groups of LED lamp beads, and non-isolated constant-current switch power source includes transformer primary side winding and support The constant current chip of constant current constant voltage pattern;The photochromic control module power supply circuit is by transformer secondary winding from non-isolated perseverance Current switching power supply transformer primary side winding is powered after taking electricity to photochromic control module;The PWM output ends of the photochromic control module It is connect with the input terminal of color temperature controlling circuit, the output end of photochromic control module is connect with non-isolated constant-current switch power source;Institute The output end for stating color temperature controlling circuit is connect with two groups of LED lamp beads respectively.
- The driving circuit 2. a kind of light modulation of LED light according to claim 1 is mixed colours, it is characterised in that:It is described non-isolated Constant-current switch power source uses BUCK constant-current switch power sources, or uses BUCK-BOOST constant-current switch power sources.
- The driving circuit 3. a kind of light modulation of LED light according to claim 1 is mixed colours, it is characterised in that:The photochromic control Module for power supply circuit uses linear power supply circuit, including filter capacitor, constant-current source and two-stage regulator circuit, transformer secondary winding Rectification, filtering are carried out after taking electricity, and by constant-current source output constant current, photochromic control mould is given in the constant current of output after two-stage voltage stabilizing Block is powered.
- The driving circuit 4. a kind of light modulation of LED light according to claim 3 is mixed colours, it is characterised in that:The level-one voltage stabilizing Circuit uses zener diode, two level regulator circuit to use three-terminal regulator chip.
- The driving circuit 5. a kind of light modulation of LED light according to claim 3 or 4 is mixed colours, it is characterised in that:The constant-current source The constant current of output carries out voltage stabilizing again after first passing through filtering.
- The driving circuit 6. a kind of light modulation of LED light according to claim 1 is mixed colours, it is characterised in that:The colour temperature control Circuit includes three metal-oxide-semiconductors Q1, Q2 and Q3, Q2 control one of which LED lamp beads, Q3 another group of LED lamp bead of control;Colour temperature controls When circuit inputs 100% duty ratio, Q1 conductings, Q2 ends, and Q3 conductings, the LED lamp bead being connect with Q3 shines;Color temperature controlling circuit When inputting 0% duty ratio, Q1 cut-offs, Q2 is connected, and Q3 cut-offs, the LED lamp bead being connect with Q2 shines;Color temperature controlling circuit input When duty ratio is between 0%-100%, Q2 and Q3 high frequency alternate conduction colour mixtures shine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562149.7A CN108696967B (en) | 2018-06-04 | 2018-06-04 | Dimming and toning driving circuit of LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562149.7A CN108696967B (en) | 2018-06-04 | 2018-06-04 | Dimming and toning driving circuit of LED lamp |
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| Publication Number | Publication Date |
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| CN108696967A true CN108696967A (en) | 2018-10-23 |
| CN108696967B CN108696967B (en) | 2023-11-10 |
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| CN201810562149.7A Active CN108696967B (en) | 2018-06-04 | 2018-06-04 | Dimming and toning driving circuit of LED lamp |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109673086A (en) * | 2019-02-15 | 2019-04-23 | 浙江阳光美加照明有限公司 | The LED drive control circuit of compatible Wireless Light modulating toning and switch on wall toning |
| CN110519898A (en) * | 2019-09-04 | 2019-11-29 | 西安中科微星光电科技有限公司 | The light source control module and light source control method of star simulator |
| CN110949238A (en) * | 2019-12-11 | 2020-04-03 | 杨敏锋 | Lamp source color control device and car lamp system |
| US11602021B2 (en) | 2020-07-29 | 2023-03-07 | Wuxi ORG Microelectronics Co., Ltd | Linear drive circuit and led light having the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11602021B2 (en) | 2020-07-29 | 2023-03-07 | Wuxi ORG Microelectronics Co., Ltd | Linear drive circuit and led light having the same |
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| Publication number | Publication date |
|---|---|
| CN108696967B (en) | 2023-11-10 |
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