CN206042451U - Independent constant -current drive circuit of LED lamp multichannel - Google Patents
Independent constant -current drive circuit of LED lamp multichannel Download PDFInfo
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- CN206042451U CN206042451U CN201621032426.6U CN201621032426U CN206042451U CN 206042451 U CN206042451 U CN 206042451U CN 201621032426 U CN201621032426 U CN 201621032426U CN 206042451 U CN206042451 U CN 206042451U
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Abstract
The utility model provides an independent constant -current drive circuit of LED lamp multichannel, including no electrolysis constant voltage power supply module and the independent constant -current drive circuit of multichannel, the input of the input termination AC of no electrolysis constant voltage power supply module, the output that should not have electrolysis constant voltage power supply module provides invariable voltage source to the independent constant -current drive circuit of multichannel, and each way output end group of the independent constant -current drive circuit of multichannel independently concatenates a set of LED lamp pearl respectively. The beneficial effects are that: the independent constant current drive of each way LED lamp pearl adopts the phase separating regulation and control between the multichannel LED lamp pearl, effectively reduce calorific capacity of LED lamp, has reduced the undulant degree of depth of LED light, overcomes the emergence of stroboscopic phenomenon, also can reduce cost when having improved the stability of constant current drive circuit.
Description
Technical field
This utility model is related to a kind of LED, and in particular to a kind of LED multichannel independence constant-current drive circuit.
Background technology
LED light source has the advantages that energy-efficient, life-span length, environmental protection and safety coefficient are high, it is adaptable to family, business
The long-time illumination of the various public situations such as field, hospital.LED lamp currently on the market is being handed over as common electric filament lamp
Stroboscopic is inevitably resulted under the driving of stream electricity, and stroboscopic is that alternating current voltage constantly changes and causes the cycle of intensity of illumination
Property change, can also give people daily life, physical and mental health and cause serious harm with noise while stroboscopic.
LED is a kind of light emitting semiconductor device of solid-state, and power drives LED light source lights, the use state shadow of driver
The luminous situation of LED light source is rung, in order that LED light source steady operation, typically drives LED light source to light using constant current source, together
When can also increase the service life of LED light source.Realize that the method for constant current source usually utilizes Switching Power Supply to output current
It is modulated, is divided into switching pulse pulsewidth modulation and switching pulse frequency modulation(PFM), but output current is modulated using Switching Power Supply
Circuit it is more complicated, relatively costly, how to improve the stability of LED light source driving, reduces cost is to be badly in need of now solving
Problem.
Utility model content
For defect of the prior art, this utility model provides a kind of LED multichannel independence constant-current drive circuit, often
LED lamp bead independence constant-current driving, is regulated and controled using split-phase between LED multi-path lamp bead all the way, effectively reduces the caloric value of LED, drop
The low fluctuation depth of LED light, overcomes stroboscopic phenomenon to occur, can also reduce while improve the stability of constant-current drive circuit
Cost.
A kind of LED multichannel independence constant-current drive circuit, drives including electroless constant voltage source module and the constant current of multichannel independence
Galvanic electricity road, the input termination AC input of the electroless constant voltage source module, the outfan of the electroless constant voltage source module to
The multichannel independence constant-current drive circuit provides constant voltage source, and the every of the multichannel independence constant-current drive circuit exports all the way
End group independently concatenates one group of LED lamp bead.
Above-mentioned LED multichannel independence constant-current drive circuit, includes electroless constant voltage source module and multichannel is independent permanent
Stream drive circuit, the input termination AC input of electroless constant voltage source module, the outfan of the electroless constant voltage source module to
Multichannel independence constant-current drive circuit provides constant voltage source, every difference of outfan group all the way of multichannel independence constant-current drive circuit
One group of LED lamp bead of independent concatenation；Each paths of LEDs lamp bead independence constant-current driving, is regulated and controled using split-phase between LED multi-path lamp bead, is had
Effect reduces the caloric value of LED, reduces the fluctuation depth of LED light, overcomes stroboscopic phenomenon to occur, improve constant-current drive circuit
Stability while also can reduces cost.
Alternatively, in LED multichannel independence constant-current drive circuit described above, electroless constant voltage source module includes surely
Depressor, linear voltage regulator, agitator, stretch circuit, phase assignments superposing control circuit, Width funtion float to track and adjust electricity
Road, voltage-tracing sampling/blanking signal sample circuit, Vf value identification circuits, protection circuit, integrated logic control circuit and intelligence
Can control interface；Manostat is used for providing regulated power supply with the linear voltage regulator；When agitator is used for providing accurately
Clock signal；Stretch circuit is used for the pulse width of expanding clock signal；Voltage-tracing sampling/blanking signal sample circuit is used
In voltage signal/blanking signal is obtained, above-mentioned signal is sent into into Width funtion on the one hand and is floated in tracking regulation circuit, on the other hand
Above-mentioned signal is sent in phase assignments superposing control circuit；On the one hand integrated logic control circuit is obtained from Based Intelligent Control interface
Control signal is taken, and on the other hand control signal is provided to phase assignments superposing control circuit and multichannel independence constant-current drive circuit；
Vf values identification circuit is for identifying feedback voltage signal from multichannel independence constant-current drive circuit；Phase assignments superposing control electricity
Road sampled according to the voltage-tracing/and the voltage signal/blanking signal of blanking signal sample circuit output, Vf value identification circuits be defeated
The feedback voltage signal for going out and the control parameter of integrated logic control circuit output realize the distribution and regulation of phase place；Width funtion
Tracking of floating adjusts circuit to be used for realizing the voltage-regulation of multichannel independence constant-current drive circuit；Protection circuit is used for realizing that power supply is protected
Shield.
Alternatively, in LED multichannel independence constant-current drive circuit described above, multichannel independence constant-current drive circuit includes
The integrated chip of model TPS-28Y.1, the power interface of the integrated chip connect the Width funtion floating tracking and adjust circuit
Outfan, the control parameter interface of the integrated chip connect the phase assignments superposing control circuit with integrated logic control electricity
The outfan on road, the outfan of the integrated chip are provided with 4 groups of LED lamp bead driving interfaces.
Alternatively, in LED multichannel independence constant-current drive circuit described above, every group of LED lamp bead driving interface includes
Positive and negative two pins, positive pole pin are connected with the drive end of positive pole all the way of the integrated chip, and negative pin concatenates inductance unit
After part, the drive end of negative pole all the way connection corresponding with integrated chip, is connected with an electric capacity between per group of positive and negative two pin
Element, the negative pole drive end of the integrated chip are connected with one end of capacity cell C6 through a diode, capacity cell C6's
Another negative pole for terminating the power interface, mono- current-limiting resistances of positive pole drive end Jing of integrated chip are just being followed by power interface
Pole.
Alternatively, in LED multichannel independence constant-current drive circuit described above, the power interface input of integrated chip
24V stable dc power supplies.
The beneficial effects of the utility model：This utility model provides a kind of LED multichannel independence constant-current drive circuit, bag
Electroless constant voltage source module and multichannel independence constant-current drive circuit is included, the input termination AC of electroless constant voltage source module is defeated
Enter, the outfan of the electroless constant voltage source module provides constant voltage source to multichannel independence constant-current drive circuit, and multichannel is only
Every outfan group all the way of vertical constant-current drive circuit independently concatenates one group of LED lamp bead；Each paths of LEDs lamp bead independence constant current is driven
It is dynamic, regulated and controled using split-phase between LED multi-path lamp bead, effectively reduce the caloric value of LED, reduce the fluctuation depth of LED light, gram
Stroboscopic phenomenon generation is taken, also can reduces cost while improve the stability of constant-current drive circuit.
Description of the drawings
Circuit block diagrams of the Fig. 1 for this utility model LED multichannel independence constant-current drive circuit；
Operating diagrams of the Fig. 2 for this utility model LED multichannel independence constant-current drive circuit；
Fig. 3 is the structural representation of LED lamp in embodiment；
Circuit theory diagrams of the Fig. 4 for this utility model LED multichannel independence constant-current drive circuit.
Reference：
1- lamp brackets；2-LED components；3- radiating wings；4- installs draw-in groove；5- wiring channels；6- thermovents；7- strip grooves.
Specific embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for
Technical scheme is clearly illustrated, therefore is intended only as example, and the protection of the present invention can not be limited with this
Scope.
Embodiment：
With reference to Fig. 1, a kind of LED multichannel independence constant-current drive circuit is only including electroless constant voltage source module and multichannel
Vertical constant-current drive circuit, the input termination AC input of electroless constant voltage source module, the output of the electroless constant voltage source module
Hold to multichannel independence constant-current drive circuit and constant voltage source, every outfan group all the way of multichannel independence constant-current drive circuit are provided
One group of LED lamp bead is concatenated independently；Electroless constant voltage source module includes manostat, linear voltage regulator, agitator, pulse exhibition
Stretch circuit, phase assignments superposing control circuit, Width funtion float to track and adjust circuit, the sampling of voltage-tracing sampling/blanking signal
Circuit, Vf value identification circuits, protection circuit, integrated logic control circuit and intelligent control interface circuit；Manostat with it is described
Linear voltage regulator is used for providing regulated power supply；Agitator is used for providing accurately clock signal；Stretch circuit is used for extending
The pulse width of clock signal；Voltage-tracing sampling/blanking signal sample circuit is used for obtaining voltage signal/blanking signal, and one
Above-mentioned signal is sent into Width funtion and is floated in tracking regulation circuit by aspect, and above-mentioned signal is sent into phase assignments superposition on the other hand
In control circuit；On the one hand integrated logic control circuit obtains control signal from the Based Intelligent Control interface, on the other hand to
Phase assignments superposing control circuit and multichannel independence constant-current drive circuit provide control signal；Vf value identification circuits are for from multichannel
Feedback voltage signal is identified in independent constant-current drive circuit；Phase assignments superposing control circuit is sampled/is disappeared according to voltage-tracing
Voltage signal/the blanking signal of hidden signal sampling circuit output, the feedback voltage signal of Vf values identification circuit output and synthesis
The control parameter of logic control circuit output realizes the distribution and regulation of phase place；Width funtion floats tracking regulation circuit for realizing
The voltage-regulation of multichannel independence constant-current drive circuit；Protection circuit is used for realizing power protection；Multichannel independence constant-current drive circuit
Including the integrated chip of model TPS-28Y.1, the power interface of the integrated chip connects Width funtion floating tracking and adjusts circuit
Outfan, the control parameter interface of the integrated chip connect phase assignments superposing control circuit with the integrated logic control circuit
Outfan, the outfan of the integrated chip are provided with 4 groups of LED lamp bead driving interfaces；Every group of LED lamp bead driving interface include just,
Minus two pins, positive pole pin are connected with the drive end of positive pole all the way of the integrated chip, and negative pin concatenates an inductance element
The drive end of negative pole all the way connection corresponding with integrated chip, is connected with electric capacity unit between per group of positive and negative two pin afterwards
Part, the negative pole drive end of integrated chip are connected with one end of capacity cell C6 through a diode, the other end of capacity cell C6
The negative pole of the power interface is connect, mono- current-limiting resistances of positive pole drive end Jing of integrated chip are followed by the positive pole of power interface；It is integrated
The power interface input 24V stable dc power supplies of chip；
Reference picture 1-4, in specific implementation process, applies this utility model LED multichannel independence constant-current drive circuit
Light fixture, including lamp bracket 1, LED component 2 and control circuit；1 middle setting of lamp bracket has to be installed for the rectangle for installing LED component 2
Frame, two sides of the rectangle installing frame outwards extend and form radiating wing 3, and one end of rectangle installing frame is provided with installation draw-in groove 4,
A circle wiring channel 5 is additionally provided with around rectangle installing frame；Radiating wing 3 is triangular in shape, is provided with scattered on the radiating wing 3
Hot mouth 6 and strip groove 7；Control circuit includes electroless constant voltage source module and multichannel independence constant-current drive circuit, electroless
The input termination AC input of constant voltage source module, the outfan of the electroless constant voltage source module is to multichannel independence constant-current driving electricity
Road provides constant voltage source；Electroless constant voltage source module includes manostat, linear voltage regulator, agitator, pulse stretching electricity
Road, phase assignments superposing control circuit, Width funtion float tracking adjust circuit, voltage-tracing sampling/blanking signal sample circuit,
Vf value identification circuits, protection circuit, integrated logic control circuit and intelligent control interface circuit；Manostat is linear steady with described
Depressor is used for providing regulated power supply；Agitator is used for providing accurately clock signal；Stretch circuit is believed for expanding clock
Number pulse width；Voltage-tracing sampling/blanking signal sample circuit is used for obtaining voltage signal/blanking signal, on the one hand will
Above-mentioned signal is sent into the Width funtion and is floated in tracking regulation circuit, and above-mentioned signal is sent into phase assignments superposition control on the other hand
In circuit processed；On the one hand integrated logic control circuit obtains control signal from the Based Intelligent Control interface, on the other hand to institute
State phase assignments superposing control circuit and multichannel independence constant-current drive circuit provides control signal；Vf values identification circuit is for from more
Feedback voltage signal is identified in the independence constant-current drive circuit of road；Phase assignments superposing control circuit is taken according to the voltage-tracing
Feedback voltage signal that the voltage signal/blanking signal of sample/blanking signal sample circuit output, Vf values identification circuit are exported and
The control parameter of integrated logic control circuit output realizes the distribution and regulation of phase place；Width funtion floating tracking adjusts circuit to be used for
Realize the voltage-regulation of multichannel independence constant-current drive circuit；Protection circuit is used for realizing power protection；Multichannel independence constant-current driving
Circuit includes the integrated chip of model TPS-28Y.1, and the power interface of the integrated chip connects the Width funtion floating tracking and adjusts
The outfan on economize on electricity road, the control parameter interface of the integrated chip are connect the phase assignments superposing control circuit and are patrolled with the synthesis
The outfan of control circuit is collected, the outfan of the integrated chip is provided with 4 groups of LED lamp bead driving interfaces, the power supply of integrated chip
Interface is input into 24V stable dc power supplies；LED component 2 is in series by the packet of plurality of LEDs lamp bead, multichannel independence constant-current driving
Every outfan group all the way of circuit independently concatenates one group of LED lamp bead；Every group of LED lamp bead driving interface includes positive and negative two
Pin, positive pole pin are connected with the drive end of positive pole all the way of the integrated chip, and negative pin concatenates an inductance element (institute in figure
Show inductance L1, L2, L3, L4) after the connection of corresponding with the integrated chip drive end of negative pole all the way, at per group positive and negative two
It is connected with a capacity cell (electric capacity C2, C3, C4, C5 shown in figure) between pin, the negative pole drive end of integrated chip is through one
Diode (diode D1, D2, D3, D4 shown in figure) is connected with one end of capacity cell C6, another termination of capacity cell C6
The negative pole of the power interface, mono- current-limiting resistances of the positive pole drive end Jing (resistance R1, R2, R3, R4 shown in figure) of integrated chip
It is followed by the positive pole of the power interface.
Preferably, in being embodied as, in order that radiating effect is more preferably, radiating wing 3 is designed as triangle, and in radiating
Multiple thermovents 6 and strip groove 7 is additionally provided with the wing 3, further enhances heat sinking function.
This utility model provides a kind of LED multichannel independence constant-current drive circuit, including electroless constant voltage source module
With multichannel independence constant-current drive circuit, the input termination AC input of electroless constant voltage source module, the electroless constant voltage source mould
The outfan of block provides constant voltage source to multichannel independence constant-current drive circuit, multichannel independence constant-current drive circuit per all the way
Outfan group independently concatenates one group of LED lamp bead；Each paths of LEDs lamp bead independence constant-current driving, adopts between LED multi-path lamp bead
Split-phase regulates and controls, and effectively reduces the caloric value of LED, reduces the fluctuation depth of LED light, overcome stroboscopic phenomenon to occur, improve
Also can reduces cost while the stability of constant-current drive circuit.
Finally it should be noted that：Above example only to illustrate the technical solution of the utility model, rather than a limitation；
Although being described in detail to this utility model with reference to foregoing embodiments, one of ordinary skill in the art should manage
Solution：Which still can be modified to the technical scheme described in foregoing embodiments, or to which part or whole skills
Art feature carries out equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from each reality of the invention
The scope of a technical scheme is applied, which all should be covered in the middle of the scope of claim of the present utility model and description.
Claims (5)
1. a kind of LED multichannel independence constant-current drive circuit, it is characterised in that only including electroless constant voltage source module and multichannel
Vertical constant-current drive circuit, the input termination AC input of the electroless constant voltage source module, the electroless constant voltage source module
Outfan provides constant voltage source to the multichannel independence constant-current drive circuit, the multichannel independence constant-current drive circuit it is every
Outfan group independently concatenates one group of LED lamp bead all the way.
2. LED multichannel independence constant-current drive circuit according to claim 1, it is characterised in that the electroless constant pressure
Power module includes manostat, linear voltage regulator, agitator, stretch circuit, phase assignments superposing control circuit, Width funtion
Tracking of floating adjusts circuit, voltage-tracing sampling/blanking signal sample circuit, Vf value identification circuits, protection circuit, integrated logic
Control circuit and intelligent control interface circuit；
The manostat is used for providing regulated power supply with the linear voltage regulator；
The agitator is used for providing accurately clock signal；
The stretch circuit is used for the pulse width of expanding clock signal；
Voltage-tracing sampling/blanking signal the sample circuit is used for obtaining voltage signal/blanking signal, on the one hand by above-mentioned letter
Number send into Width funtion tracking of floating to adjust in circuit, above-mentioned signal is sent into into phase assignments superposing control circuit on the other hand
In；
On the one hand the integrated logic control circuit obtains control signal from the Based Intelligent Control interface, on the other hand to described
Phase assignments superposing control circuit and multichannel independence constant-current drive circuit provide control signal；
The Vf values identification circuit is for identifying feedback voltage signal from the multichannel independence constant-current drive circuit；
The phase assignments superposing control circuit sampled according to the voltage-tracing/the voltage letter of blanking signal sample circuit output
Number/blanking signal, Vf values identification circuit output feedback voltage signal and integrated logic control circuit output control parameter
Realize the distribution and regulation of phase place；
The Width funtion floats tracking regulation circuit for realizing the voltage-regulation of multichannel independence constant-current drive circuit；
The protection circuit is used for realizing power protection.
3. LED multichannel independence constant-current drive circuit according to claim 2, it is characterised in that the multichannel is independent permanent
Stream drive circuit includes the integrated chip of model TPS-28Y.1, and the power interface of the integrated chip connects the Width funtion and floats
Tracking adjusts the outfan of circuit, the control parameter interface of the integrated chip connect the phase assignments superposing control circuit with it is described
The outfan of integrated logic control circuit, the outfan of the integrated chip are provided with 4 groups of LED lamp bead driving interfaces.
4. LED multichannel independence constant-current drive circuit according to claim 3, it is characterised in that per group of LED lamp bead
Driving interface includes positive and negative two pins, and positive pole pin is connected with the drive end of positive pole all the way of the integrated chip, negative pin
The drive end of negative pole all the way connection corresponding with the integrated chip after an inductance element is concatenated, in per group of positive and negative two pin
Between be connected with a capacity cell, the negative pole drive end of the integrated chip is connected with one end of capacity cell C6 through a diode
Connect, the negative pole of another termination power interface of capacity cell C6, mono- current limlitings of the positive pole drive end Jing electricity of the integrated chip
Resistance is followed by the positive pole of the power interface.
5. the LED multichannel independence constant-current drive circuit according to claim 3 or 4, it is characterised in that the integrated chip
Power interface input 24V stable dc power supplies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621032426.6U CN206042451U (en) | 2016-08-31 | 2016-08-31 | Independent constant -current drive circuit of LED lamp multichannel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621032426.6U CN206042451U (en) | 2016-08-31 | 2016-08-31 | Independent constant -current drive circuit of LED lamp multichannel |
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| Publication Number | Publication Date |
|---|---|
| CN206042451U true CN206042451U (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621032426.6U Active CN206042451U (en) | 2016-08-31 | 2016-08-31 | Independent constant -current drive circuit of LED lamp multichannel |
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| Country | Link |
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| CN (1) | CN206042451U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107193120A (en) * | 2017-07-07 | 2017-09-22 | 深圳市博盛医疗科技有限公司 | A kind of multispectral LED endoscope illuminations module |
| WO2024113178A1 (en) * | 2022-11-29 | 2024-06-06 | Siemens Aktiengesellschaft | Driving apparatus for sic-mosfet device |
-
2016
- 2016-08-31 CN CN201621032426.6U patent/CN206042451U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107193120A (en) * | 2017-07-07 | 2017-09-22 | 深圳市博盛医疗科技有限公司 | A kind of multispectral LED endoscope illuminations module |
| WO2024113178A1 (en) * | 2022-11-29 | 2024-06-06 | Siemens Aktiengesellschaft | Driving apparatus for sic-mosfet device |
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