CN106455209B - Dimming interface circuit and AC driving circuit - Google Patents
Dimming interface circuit and AC driving circuit Download PDFInfo
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- CN106455209B CN106455209B CN201610875275.9A CN201610875275A CN106455209B CN 106455209 B CN106455209 B CN 106455209B CN 201610875275 A CN201610875275 A CN 201610875275A CN 106455209 B CN106455209 B CN 106455209B
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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]
-
- 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]
- H05B45/40—Details of LED load circuits
Abstract
It includes: current control chip, including the first signal pins and second signal foot that the present invention, which discloses a kind of dimming interface circuit and AC driving circuit, dimming interface circuit,；Reference current setup unit, input terminal are connect with power supply, and electric current setting end is connect with the first signal pins；First optocoupler, collector are connect with power supply, emitter, the first end of first resistor and the interconnection of second signal foot, the second end ground connection of first resistor；Second optocoupler, the controlled end of its collector, the first end of second resistance and first switch tube interconnects, the second end of second resistance is connect with power supply, and the input terminal of first switch tube is connect with the first signal pins, the emitter ground connection of the output end of first switch tube and the second optocoupler；Wherein, the output size of current of the duty ratio control AC driving circuit for the light modulation pwm signal that current control chip is inputted according to the first optocoupler and the second optocoupler.Technical solution of the present invention can be realized the isolation brightness adjustment control to AC driving circuit.
Description
Technical field
The present invention relates to AC driving circuit technical field, in particular to a kind of dimming interface circuit and exchange driving electricity
Road.
Background technique
LED is applied in display more and more widely because the advantages such as facilitating with service life length, power and energy saving, driving, is shone
Bright equal fields.
The driving of LED is divided into exchange driving and DC driven.Wherein, exchange driving, which refers to, converts alternating current through AC-DC
It powers directly to LED；DC driven refers to the first low-voltage dc voltage after AC-DC converts to obtain an isolation of alternating current,
It converts using DC-DC and powers to LED.Exchange driving method has higher because of voltage order one fewer than DC driven mode transformation
Efficiency and lower cost, it is existing driving LED AC driving circuit as shown in Figure 1, AC driving circuit shown in FIG. 1 is
Monolithic constant current AC driving circuit with high integration, by the way of primary control light modulation, its disadvantages are that cannot
Alternating current is isolated.
Summary of the invention
The main object of the present invention is to provide a kind of dimming interface circuit, it is intended to realize the isolation tune to AC driving circuit
Photocontrol.
To achieve the above object, dimming interface circuit proposed by the present invention includes: current control chip, the current control
Chip includes the first signal pins and second signal foot；Reference current setup unit, the input terminal of the reference current setup unit
It is connect with the power end of power supply, the electric current setting end of the reference current setup unit is connect with first signal pins；
The collector of first optocoupler, first optocoupler is connect with the power end of the power supply, the emitter of first optocoupler,
The first end of first resistor and second signal foot interconnection, the second end ground connection of the first resistor；Second optocoupler, described
The controlled end of the collector of two optocouplers, the first end of second resistance and first switch tube interconnects, the second end of the second resistance
It being connect with the power end of the power supply, the input terminal of the first switch tube is connect with first signal pins, and described
The emitter of the output end of one switching tube and second optocoupler is grounded；Wherein, the current control chip, for according to institute
State the duty ratio control of the simulation light modulation pwm signal of the first optocoupler input and the digital dimming pwm signal of second optocoupler input
Make the output size of current of the AC driving circuit.
Preferably, the model AL1663 of the current control chip.
Preferably, the power supply includes auxiliary winding, first capacitor, pressure stabilizing adjustment is managed and 3rd resistor, described auxiliary
The first end of winding and the second end of the 3rd resistor is helped to connect, the first end of the 3rd resistor, pressure stabilizing adjustment pipe
Cathode, the pressure stabilizing adjustment pipe adjustment end and the first capacitor first end interconnection, connecting node be the power supply
The power end of power supply, the anode of the second end of the auxiliary winding, the second end of the first capacitor and pressure stabilizing adjustment pipe
It is grounded.
Preferably, the reference current setup unit include potentiometer, second switch, third switching tube, the second capacitor,
The input terminal of 4th resistance and the 5th resistance, the input terminal of the potentiometer and the second switch interconnects, connecting node
For the input terminal of the reference current setup unit, the controlled end of the adjustment end of the potentiometer and the second switch connects
It connects, the controlled end interconnection of the output end of the second switch, the first end of the 4th resistance and the third switching tube；Institute
State the first end interconnection of the input terminal of third switching tube, the first end of the 5th resistance and second capacitor, connection section
Point be the reference current setup unit electric current set end, the output end of the potentiometer, the 4th resistance second end,
The second end of the output end of the third switching tube, the second end of the 5th resistance and second capacitor is grounded.
Preferably, the reference current setup unit further includes the 6th resistance and the 7th resistance, and the of the 6th resistance
One end is connect with the input terminal of the second switch, and connecting node is the input terminal of the reference current setup unit, institute
The second end for stating the 6th resistance is connect with the input terminal of the potentiometer；The first end of 7th resistance and the potentiometer
Output end connection, the second end ground connection of the 7th resistance.
Preferably, the second switch is NPN type triode.
Preferably, the third switching tube is PNP type triode.
Preferably, the first switch tube is NPN type triode.
The present invention also proposes a kind of AC driving circuit, including driving output circuit and dimming interface as described above electricity
Road, the output pin of the current control chip are connect with the controlled end of the driving output circuit, the driving output circuit
Drive output is connect with LED load；Wherein, the dimming interface circuit includes: current control chip, the current control core
Piece includes the first signal pins and second signal foot；Reference current setup unit, the input terminal of the reference current setup unit with
The power end of power supply connects, and the electric current setting end of the reference current setup unit is connect with first signal pins；The
The collector of one optocoupler, first optocoupler is connect with the power end of the power supply, the emitter of first optocoupler,
The first end of one resistance and second signal foot interconnection, the second end ground connection of the first resistor；Second optocoupler, described second
The controlled end of the collector of optocoupler, the first end of second resistance and first switch tube interconnects, the second end of the second resistance with
The power end of the power supply connects, and the input terminal of the first switch tube is connect with first signal pins, and described first
The emitter of the output end of switching tube and second optocoupler is grounded；Wherein, the current control chip, for according to
The duty ratio control of the digital dimming pwm signal of the simulation light modulation pwm signal and second optocoupler input of first optocoupler input
The output size of current of the AC driving circuit.
Simulation light modulation pwm signal that technical solution of the present invention is inputted by using current control chip according to the first optocoupler and
The output circuit size of the duty ratio control AC driving circuit of the digital dimming pwm signal of second optocoupler input, realizes pair
The isolation brightness adjustment control of AC driving circuit.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the electrical block diagram of existing AC driving circuit；
Fig. 2 is the electrical block diagram of one embodiment of dimming interface circuit of the present invention；
Fig. 3 is the functional block diagram of one embodiment of AC driving circuit of the present invention.
Drawing reference numeral explanation:
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
The present invention proposes a kind of dimming interface circuit.
In one embodiment, dimming interface circuit proposed by the present invention includes: current control chip U4, current control chip
U4 includes the first signal pins APWM and second signal foot PWMD；Reference current setup unit 20, reference current setup unit 20
Input terminal is connect with the power end of power supply 10, the electric current setting end of reference current setup unit 20 and the first signal pins APWM
Connection；First optocoupler U1, the collector of the first optocoupler U1 are connect with the power end of power supply 10, the transmitting of the first optocoupler U1
Pole, the first end of first resistor R1 and second signal foot PWMD interconnection, the second end ground connection of first resistor R1；Second optocoupler U2,
The controlled end of the collector of second optocoupler U2, the first end of second resistance R2 and first switch tube Q1 interconnects, second resistance R2's
Second end is connect with the power end of power supply 10, and the input terminal of first switch tube Q1 is connect with the first signal pins APWM, and first
The emitter of the output end of switching tube Q1 and the second optocoupler U2 are grounded；Wherein, current control chip U4, for according to the first light
The duty ratio control exchange of the digital dimming pwm signal of the simulation light modulation pwm signal and the second optocoupler U2 input of coupling U1 input is driven
The output size of current of dynamic circuit.
It should be noted that in the present embodiment, it is desirable that current control chip U4 is provided simultaneously with following functions:
(1) if the voltage swing for falling in the first signal pins APWM of current control chip U4 changes, current control
The output size of current corresponding change of chip U4 control AC driving circuit.
(2) if the duty ratio for being input to the pwm signal of the first signal pins APWM of current control chip U4 changes,
The output size of current corresponding change of current control chip U4 control AC driving circuit.
(3) if the duty ratio for being input to the pwm signal of the second signal foot PWMD of current control chip U4 changes,
Fall in the voltage swing corresponding change of the first signal pins APWM of current control chip U4.
During adjusting the output electric current of AC driving circuit using dimming interface circuit:
Firstly, the reference current setting signal control that current control chip U4 is received according to its first signal pins APWM is handed over
The benchmark for flowing driving circuit exports electric current.In general, reference current setting signal is d. c. voltage signal.
Then, digital dimming pwm signal is input to current control chip U4, current control chip U4 by the second optocoupler U2
According to the output electric current of its first signal pins APWM digital dimming pwm signal control AC driving circuit received.In this way, just
Realize the number isolation brightness adjustment control to AC driving circuit.It is understood that first opens when the second optocoupler U2 conducting
The base voltage for closing pipe Q1 is pulled low, first switch tube Q1 cut-off, and the first signal pins APWM of current control chip U4 is high electricity
It is flat；When the second optocoupler U2 cut-off, the base voltage of first switch tube Q1 is raised, first switch tube Q1 conducting, current control
The first signal pins of chip U4 are low level.Therefore, it is input to the pwm signal of the first signal pins APWM of current control chip U4
Duty ratio and the duty ratio of digital dimming signal pwm signal of the second optocoupler U2 input have one-to-one relationship, electric current
The output size of current of AC driving circuit can be controlled according to the duty ratio of digital dimming pwm signal by controlling chip U4.
At the same time, simulation light modulation pwm signal is input to the second signal of current control chip U4 by the first optocoupler U1
Foot PWMD, with change fall in current control chip U4 the first signal pins APWM voltage swing, current control chip U4 according to
Fall in the output electric current of the voltage value control AC driving circuit of its first signal pins APWM.Exchange is driven in this way, being achieved that
The analog isolation brightness adjustment control of dynamic circuit.It is understood that when the first optocoupler U1 conducting, the second of current control chip U4
Signal pins PWMD is high level；When the first optocoupler U1 cut-off, the second signal foot of current control chip U4 is low level.Cause
This, is input to the duty ratio of the pwm signal of the second signal foot PWMD of current control chip U4 and the mould of the first optocoupler U1 input
The duty ratio of quasi- light modulation pwm signal has one-to-one relationship, falls in the first signal pins APWM's of current control chip U4
The duty ratio of voltage swing and the simulation light modulation pwm signal of the first optocoupler U1 input also has one-to-one relationship, electric current control
Coremaking piece U4 can be according to the output size of current of the duty ratio control AC driving circuit of simulation light modulation pwm signal.
The simulation light modulation PWM letter that technical solution of the present invention is inputted by using current control chip U4 according to the first optocoupler U1
Number and the second optocoupler U2 input digital dimming pwm signal duty ratio control AC driving circuit output size of current, it is real
The isolation brightness adjustment control to AC driving circuit is showed.
It is noted that above-mentioned first switch tube Q1 is NPN type triode, the base stage of the NPN type triode is described
The controlled end of first switch tube Q1, the input terminal of the extremely described first switch tube Q1 of the current collection of the NPN type triode, the NPN type
The output end of the extremely described first switch tube Q1 of transmitting of triode, it will be understood that above-mentioned first switch tube Q1 can also be N-
Metal-oxide-semiconductor, herein with no restrictions.
Preferably, the model AL1663 of above-mentioned current control chip U4.It is appreciated that current control chip U4 can be with
It is the chip for having other models of above-mentioned three functions, herein with no restrictions.
Preferably, above-mentioned power supply 10 includes auxiliary winding VAUX, first capacitor C1, pressure stabilizing adjustment pipe U3 and third electricity
R3 is hindered, the first end of the auxiliary winding VAUX connect with the second end of the 3rd resistor R3, and the of the 3rd resistor R3
One end, the cathode of pressure stabilizing adjustment pipe U3, the pressure stabilizing adjust the adjustment end of pipe U3 and the first end of the first capacitor C1
Interconnection, connecting node are the power end of the power supply 10, second end, the first capacitor of the auxiliary winding VAUX
The anode of the second end of C1 and pressure stabilizing adjustment pipe U3 are grounded.
In the present embodiment, the power supply being added on auxiliary winding VAUX exports after pressure stabilizing adjusts pipe U3 steady pressure treatment, powers
Power supply 10 can export stable DC.In general, the voltage swing that power supply 10 exports is 2.5V.
Preferably, said reference current setting unit setting 20 include potentiometer RW, second switch Q2, third switching tube Q3,
Second capacitor C2, the 4th resistance R4 and the 5th resistance R5, the input terminal of the potentiometer RW are defeated with the second switch Q2's
Enter end interconnection, connecting node is the input terminal of the reference current setup unit 20, the adjustment end of the potentiometer RW and institute
State second switch Q2 controlled end connection, the output end of the second switch Q2, the 4th resistance R4 first end and
The controlled end of the third switching tube Q3 interconnects；The first end of the input terminal of the third switching tube Q3, the 5th resistance R5
And the first end interconnection of the second capacitor C2, connecting node are that the electric current of the reference current setup unit 20 sets end,
The output end of the potentiometer RW, the second end of the 4th resistance R4, the output end of the third switching tube Q3, the described 5th
The second end of resistance R5 and the second end of the second capacitor C2 are grounded.
It is noted that second switch Q2 is preferably NPN type triode, the NPN type triode in the present embodiment
Base stage is the controlled end of the second switch Q2, the input of the extremely described second switch Q2 of the current collection of the NPN type triode
End, the output end of the extremely described second switch Q2 of transmitting of the NPN type triode；Third switching tube Q3 is preferably positive-negative-positive three
Pole pipe, the base stage of the PNP type triode are the controlled end of the third switching tube Q3, the transmitting of the PNP type triode extremely institute
State the input terminal of third switching tube Q3, the output end of the extremely described third switching tube Q3 of the current collection of the PNP type triode.It can manage
Solution, second switch Q2 can also be that N-MOS is managed, and third switching tube Q3 can also be that P-MOS is managed, herein with no restrictions.
It is understood that falling in the voltage of the controlled end of second switch Q2 in the present embodiment and falling in third switch
The voltage swing of the input terminal of pipe Q3 is almost equal, the output voltage of reference current setup unit 20 and the tune for falling in potentiometer RW
The voltage swing at whole end is equal.In this way, by adjusting potentiometer RW, so that it may change the output electricity of reference current setup unit 20
Press size.
It should be noted that in order to make the output voltage of reference current setup unit 20 and current control chip U4 phase
Match, said reference current setting unit setting 20 further includes the 6th resistance R6 and the 7th resistance R7, the first end of the 6th resistance R6
It is connect with the input terminal of the second switch Q2, connecting node is the input terminal of the reference current setup unit 20, institute
The second end for stating the 6th resistance R6 is connect with the input terminal of the potentiometer RW；The first end of the 7th resistance R7 and the electricity
The output end connection of position device RW, the second end ground connection of the 7th resistance R7.
In a preferred embodiment, when the voltage swing for the first signal pins APWM for falling in current control chip U4 is in 0.3V
When between 2.4V, current control chip U4 accordingly controls exchange driving according to the voltage swing for falling in its first signal pins APWM
The output electric current of circuit.In the present embodiment, the maximum value for falling in the adjustment end of potentiometer RW is potentiometer RW and the 7th resistance R7
The voltage got, the voltage that minimum value is got by the 7th resistance R7.In this way, passing through the 6th resistance R6 of setting and the 7th resistance
The parameter of R7, so that it may so that the output voltage of reference current setup unit 20 is in 0.3V between 2.4V.
Hereinafter, illustrating the working principle of dimming interface circuit of the present invention in conjunction with Fig. 2:
Firstly, the reference current setting signal control that current control chip U4 is received according to its first signal pins APWM is handed over
The benchmark for flowing driving circuit exports electric current.In the process, reference current setting list can be changed by adjusting potentiometer RW
The output voltage of member 20, so that the benchmark that current control chip U4 adjusts AC driving circuit exports electric current.
Then, digital dimming pwm signal is input to current control chip U4 by the second optocoupler U2, when the second optocoupler U2 is led
When logical, the first signal pins APWM of current control chip U4 is high level；When the second optocoupler U2 cut-off, current control chip U4
The first signal pins APWM be low level.In the process, can be changed by changing the duty ratio of digital dimming pwm signal
It is input to the duty ratio of the pwm signal of the first signal pins APWM of current control chip U4, so that current control chip U4 is adjusted
The output electric current of AC driving circuit.
At the same time, simulation light modulation pwm signal is input to current control chip U4 by the first optocoupler U1, when the first optocoupler
When U1 is connected, the second signal foot PWMD of current control chip U4 is high level, when the first optocoupler U1 cut-off, current control core
The second signal foot PWMD of piece U4 is low level.In the process, can by change simulate light modulation pwm signal duty ratio come
Change the duty ratio for being input to the pwm signal of second signal foot PWMD of current control chip U4, and then changes and fall in electric current control
The voltage of the first signal pins APWM of coremaking piece U4, so that current control chip U4 adjusts the output electric current of AC driving circuit.
In this way, being achieved that the number isolation brightness adjustment control and analog isolation brightness adjustment control to AC driving circuit.
The present invention also proposes a kind of AC driving circuit, which includes driving output circuit 30 and institute as above
The dimming interface circuit stated, the specific structure of the dimming interface circuit is referring to above-described embodiment, since this AC driving circuit is adopted
Own with whole technical solutions of above-mentioned all embodiments, therefore at least brought by the technical solution with above-described embodiment
Beneficial effect, this is no longer going to repeat them.Wherein, the output pin OUT of the current control chip U4 and driving output electricity
The controlled end on road 30 connects, and the drive output of the driving output circuit 30 is connect with LED load 40.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (9)
1. a kind of dimming interface circuit, in AC driving circuit characterized by comprising
Current control chip, the current control chip include the first signal pins and second signal foot；
Reference current setup unit, the input terminal of the reference current setup unit and the power end of power supply connect, described
The electric current setting end of reference current setup unit is connect with first signal pins；
The collector of first optocoupler, first optocoupler is connect with the power end of the power supply, the hair of first optocoupler
Emitter-base bandgap grading, the first end of first resistor and second signal foot interconnection, the second end ground connection of the first resistor；
Second optocoupler, the controlled end interconnection of the collector of second optocoupler, the first end of second resistance and first switch tube, institute
The second end for stating second resistance is connect with the power end of the power supply, the input terminal of the first switch tube and described first
The emitter of signal pins connection, the output end of the first switch tube and second optocoupler is grounded；Wherein,
The current control chip, simulation light modulation pwm signal and second optocoupler for being inputted according to first optocoupler
The duty ratio of the digital dimming pwm signal of input controls the output size of current of the AC driving circuit.
2. dimming interface circuit as described in claim 1, which is characterized in that the model of the current control chip
AL1663。
3. dimming interface circuit as described in claim 1, which is characterized in that the power supply includes auxiliary winding, first
Capacitor, pressure stabilizing adjustment pipe and 3rd resistor, the first end of the auxiliary winding is connect with the second end of the 3rd resistor, described
The first end of 3rd resistor, the pressure stabilizing adjust the cathode of pipe, the adjustment end of pressure stabilizing adjustment pipe and the first capacitor
First end interconnection, connecting node are the power end of the power supply, the second end of the auxiliary winding, the first capacitor
Second end and the pressure stabilizing adjustment pipe anode be grounded.
4. dimming interface circuit as described in claim 1, which is characterized in that the reference current setup unit includes current potential
Device, second switch, third switching tube, the second capacitor, the 4th resistance and the 5th resistance, the input terminal of the potentiometer with it is described
The input terminal of second switch interconnects, and connecting node is the input terminal of the reference current setup unit, the potentiometer
Adjustment end is connect with the controlled end of the second switch, and the first of the output end of the second switch, the 4th resistance
The interconnection of the controlled end of end and the third switching tube；The input terminal of the third switching tube, the 5th resistance first end and
The first end of second capacitor interconnects, and connecting node is that the electric current of the reference current setup unit sets end, the electricity
The position output end of device, the second end of the 4th resistance, the second end of the output end of the third switching tube, the 5th resistance
And the second end of second capacitor is grounded.
5. dimming interface circuit as claimed in claim 4, which is characterized in that the reference current setup unit further includes the 6th
The first end of resistance and the 7th resistance, the 6th resistance is connect with the input terminal of the second switch, and connecting node is
The second end of the input terminal of the reference current setup unit, the 6th resistance is connect with the input terminal of the potentiometer；Institute
The first end for stating the 7th resistance is connect with the output end of the potentiometer, the second end ground connection of the 7th resistance.
6. dimming interface circuit as claimed in claim 4, which is characterized in that the second switch is NPN type triode.
7. dimming interface circuit as claimed in claim 4, which is characterized in that the third switching tube is PNP type triode.
8. the dimming interface circuit as described in claim 1-7 any one, which is characterized in that the first switch tube is NPN
Type triode.
9. a kind of AC driving circuit, including driving output circuit and the dimming interface as described in claim 1-8 any one
Circuit, the output pin of the current control chip are connect with the controlled end of the driving output circuit, the driving output circuit
Drive output connect with LED load.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610875275.9A CN106455209B (en) | 2016-09-30 | 2016-09-30 | Dimming interface circuit and AC driving circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875275.9A CN106455209B (en) | 2016-09-30 | 2016-09-30 | Dimming interface circuit and AC driving circuit |
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| CN106455209A CN106455209A (en) | 2017-02-22 |
| CN106455209B true CN106455209B (en) | 2018-12-07 |
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| CN107509281B (en) * | 2017-09-27 | 2023-12-08 | 浙江意博高科技术有限公司 | Circuit for realizing wireless control of RGBW light source by non-isolation topology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760721A (en) * | 2004-10-14 | 2006-04-19 | 索尼公司 | Light emitting element drive device and display system |
| CN203136246U (en) * | 2013-01-16 | 2013-08-14 | 陕西亚成微电子股份有限公司 | Dimming circuit suitable for linear high-voltage LED driver |
| CN105764185A (en) * | 2016-03-18 | 2016-07-13 | 深圳Tcl数字技术有限公司 | AC driving mixed dimming circuit and television |
| CN205596389U (en) * | 2016-03-18 | 2016-09-21 | 深圳Tcl数字技术有限公司 | Constant current AC drive circuit and TV set |
-
2016
- 2016-09-30 CN CN201610875275.9A patent/CN106455209B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760721A (en) * | 2004-10-14 | 2006-04-19 | 索尼公司 | Light emitting element drive device and display system |
| CN203136246U (en) * | 2013-01-16 | 2013-08-14 | 陕西亚成微电子股份有限公司 | Dimming circuit suitable for linear high-voltage LED driver |
| CN105764185A (en) * | 2016-03-18 | 2016-07-13 | 深圳Tcl数字技术有限公司 | AC driving mixed dimming circuit and television |
| CN205596389U (en) * | 2016-03-18 | 2016-09-21 | 深圳Tcl数字技术有限公司 | Constant current AC drive circuit and TV set |
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| Publication number | Publication date |
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| CN106455209A (en) | 2017-02-22 |
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