CN103124461A - LED linear intelligent dimming module - Google Patents
LED linear intelligent dimming module Download PDFInfo
- Publication number
- CN103124461A CN103124461A CN2013100254592A CN201310025459A CN103124461A CN 103124461 A CN103124461 A CN 103124461A CN 2013100254592 A CN2013100254592 A CN 2013100254592A CN 201310025459 A CN201310025459 A CN 201310025459A CN 103124461 A CN103124461 A CN 103124461A
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- Prior art keywords
- constant
- current source
- load
- driving tube
- intelligent dimming
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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
- H05B45/395—Linear regulators
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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]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
-
- 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)
- Led Devices (AREA)
Abstract
The invention discloses an LED linear intelligent dimming module which is characterized by comprising a load circuit, a current expansion branch circuit and a trigger optical coupler, wherein the load circuit is connected between a positive electrode and a negative electrode of a power supply and sequentially comprises a main constant current source, a sampling resistor, a diode and a load which are forwardly connected in series, the current expansion branch circuit comprises an auxiliary constant current source, a driving tube and a biasing resistor, the auxiliary constant current source is forwardly connected in series with a CE electrode of the driving tube and then integrally connected in parallel with the load, the biasing resistor is connected between a positive electrode of the load and a B electrode of the driving tube, ends 1 and 2 of a luminous tube of the trigger optical coupler are forwardly connected in parallel with the sampling resistor, and ends 3 and 4 of a transistor of the trigger optical coupler are connected with the B electrode and an E electrode of the driving tube respectively. The LED linear intelligent dimming module realizes dimming and constant current adaption functions, the load can be connected with a traditional silicon controlled rectifier dimmer, the LED linear intelligent dimming module has a quite simple circuit, coil components such as an inductor and a transformer are omitted, and material cost is low.
Description
Technical field
The present invention relates to a kind of lighting driving device, specifically a kind of driver module for the LED illumination.
Background technology
The LED light fixture is used widely at illuminating industry: the Driving technique of LED indoor illumination light fitting is maked rapid progress.The driving major part of indoor LED illumination light fixture is all the highly integrated Switching Power Supply of wide-scale adoption at present, and the coil components such as inductance, transformer have been adopted, hold at high price, complex structure, installation difficulty, oneself is through having restricted the development of LED light fixture at illuminating industry.The LED light fixture of considering magnanimity must enter the consumption market in enormous quantities, directly substitute traditional lamp light source, its price positioning is popular acceptable par, it is an inevitable target, but in present Switching Power Supply scheme, the more drive circuit of above-mentioned components and parts reaches the very difficult of par.
On the other hand, since mentioned substituting of light fixture, a part suitable in the LED light fixture must directly be used instead in the loop with light modulating device, and this class light modulating device and a general class thereof are used silicon controlled chopped mode light adjusting circuit exactly.Complexity due to above-mentioned LED drive part itself, need to adapt to the demand of controllable silicon light modulation, its driver module is often too loaded down with trivial details and huge in addition, and Material Cost is high on the one hand, can't reach the target of commodities at par, on the other hand its complexity effect the reliability of whole lamp.
Summary of the invention
Many for existing LED driver module element, complicated and be difficult to adapt to the problem of controllable silicon light modulation, the present invention proposes a kind of LED linearity intelligent dimming module, and its technical scheme is as follows:
The linear intelligent dimming module of a kind of LED comprises:
Load circuit, this load circuit is connected between power positive cathode, comprises in turn a main constant-current source, a sampling resistor, a diode and a load of forward series connection;
Expand the stream branch road, comprise a secondary constant-current source, a driving tube and a biasing resistor, wherein should the pair constant-current source with after the CE utmost point phase forward of this driving tube is connected, then integral body is parallel to described load; This biasing resistor is connected between this load positive pole and the driving tube B utmost point; And
One triggers optocoupler, and 1,2 end of its luminous tube is in parallel with described sampling resistor forward; Its transistorized 3,4 ends extremely are connected with E with the described driving tube B utmost point respectively;
Wherein, described power positive cathode connects rectified AC power, and this AC power is from the output of controllable silicon dimmer; When dimmer was output as maximum power, this triggered the optocoupler conducting, and this main constant-current source is constant current state, and this pair constant-current source is conducting state; When this dimmer was output as non-maximum power, this triggered the optocoupler cut-off, and this main constant-current source is conducting state, and this pair constant-current source is constant current state.
Some optional improvement as this programme can have the embodiment of following aspect:
In preferred embodiment, this load comprises the LED light source group of series connection and the electrochemical capacitor in parallel with this LED light source group.
In preferred embodiment, this power positive cathode connects the both positive and negative polarity of a rectifier bridge, and this rectifier bridge exchanges end and connects described dimmer output.
In preferred embodiment, described main constant-current source and negative constant-current source are current regulator diode.
In preferred embodiment, described current regulator diode and driving tube are packaged in same chip jointly.
In preferred embodiment, this chip has at least 8 output leads, and this current regulator diode and driving tube pin is separately independently exported and is communicated in this lead-in wire.
The beneficial effect that the technical program is brought has:
1. realize the adaptation function of light modulation and constant current, load can have been refuted with traditional controllable silicon dimmer connect, and have foolproof circuit, omitted the coil components such as inductance, transformer, brought less Material Cost.
2. simple structure enables to realize the circuit of light modulation, has reliability preferably, is easy to batch production, and debugging is simple.
3. utilize the forward voltage-current characteristic of current regulator diode to realize constant-current source conducting, the foolproof structure of constant current handoff functionality, have cost advantage.
4. current regulator diode and driving tube are integrated in the scheme of same chip, circuit is further simplified, high conformity, debugging is convenient, has good production efficiency.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing embodiment:
Fig. 1 is the circuit diagram of the embodiment of the present invention one;
Fig. 2 is the circuit diagram of the embodiment of the present invention two;
Fig. 3 is the schematic diagram of chip embodiment illustrated in fig. 2.
Embodiment
Embodiment one:
As shown in Figure 1, the circuit diagram of the embodiment of the present invention one.
This light-adjusting module comprises a load circuit, a triggering optocoupler that expands the stream branch road and control this expansion stream branch road.Wherein load circuit is connected between power positive cathode, and it comprises a main constant-current source S2, a sampling resistor R1, a diode D and a load RL in turn, and the components and parts with polarity in this load circuit are all connected according to the forward that flows to of electric current.Wherein, load RL has comprised LED light source.
Separately have one to expand the stream branch road, this expansion stream branch road comprises a secondary constant-current source S2, a driving tube T1 and a biasing resistor R2, wherein should connect with the CE utmost point phase forward of this driving tube T1 by pair constant-current source S2, the more whole two ends that are parallel to load RL; This biasing resistor R2 is connected between this load RL positive pole and the driving tube B utmost point; That control this expansion stream branch road is a triggering optocoupler OC1, positive pole and the negative pole of the corresponding luminous tube of its inside 1,2 end, and the corresponding transistorized C utmost point of its 3,4 end and E utmost point are so the voltage status of 1,2 end has been controlled the conduction and cut-off state of 3,4 ends.This 1,2 end that triggers its luminous tube of optocoupler OC1 is in parallel with sampling resistor R1 forward, that is, and and the high potential of 1 termination R1, the electronegative potential of 2 termination R2; Its transistorized 3,4 ends extremely are connected with E with the B utmost point of driving tube T1 respectively.
Below the course of work of this embodiment:
Power positive cathode connects rectified AC power actually, and this AC power is from the output of controllable silicon dimmer (indicating), and as the controllable silicon dimmer principle, this power positive cathode obtains is that waveform is complete or chopped off the full wave rectified signal of reduction.When dimmer was output as maximum power, on this both positive and negative polarity, the effective value of rectified signal was maximum; And when dimmer began to regulate, on this both positive and negative polarity, the effective value of rectified signal weakened variation thereupon.
The present embodiment has two obvious operating states, first state correspondence the maximum power of dimmer output, can be referred to as full load condition; Second state correspondence dimmer when being output as non-maximum power, can be referred to as adjustment state.Wherein:
When full load condition, on this both positive and negative polarity, the effective value of rectified signal is maximum, and setting main constant-current source S1 this moment is constant current state, triggers optocoupler OC1 conducting, i.e. the luminous tube conducting of 1,2 end makes 3,4 ends also be in conducting; Simultaneously, secondary constant-current source S2 is conducting state, non-constant current, so this moment the electric current in load circuit by constant, the current value of the R1 that flows through, D and RL is stable, the work of load RL constant current.
On the basis of above-mentioned full load condition, when regulating controllable silicon dimmer, when making circuit be in adjustment state, its element state also changes thereupon: the electric current of load circuit falls, thereby sampling resistor R1 both end voltage no longer triggers in optocoupler OC1 1, so the luminous tube of 2 ends is 3,4 end cut-offs.Under this state, main constant-current source S1 is converted into the conducting state of non-constant current.On the other hand, this moment, T1 was saturated, and secondary constant-current source S2 is in constant current state, provided a lower current limit threshold for expanding the stream branch road.Under this state, load RL no longer is in the state of constant current work, but along with the exporting change of controllable silicon light modulation, its operating current changes, and has realized refuting normal light modulation under connecing with controllable silicon dimmer.
As seen, this module has realized the adaptation function of light modulation and constant current, load RL can be refuted with traditional controllable silicon dimmer connect, and have foolproof circuit, major and minor constant-current source can be realized with multiple semiconductor device, omit the coil components such as inductance, transformer.So on the one hand, a small amount of components and parts have brought less Material Cost, on the other hand, its simple structure enables to realize the circuit of light modulation, has reliability preferably, is easy to batch production, and debugging is simple.
Embodiment two:
As shown in Figures 2 and 3, the schematic diagram of the embodiment of the present invention two.
The load of this embodiment, the LED light source group of series connection and the electrochemical capacitor C1 in parallel with this LED light source group have been comprised, and, integrated a rectifier bridge B, this power positive cathode connects the both positive and negative polarity of rectifier bridge B, this rectifier bridge B exchanges end and connects dimmer output (indicating), and also, the direct replacement is connected in original light adjusting circuit.
In the present embodiment, main constant-current source and negative constant-current source are respectively current regulator diode Z1 and Z2.Utilize the forward voltage-current characteristic of current regulator diode to realize constant-current source conducting, the foolproof structure of constant current handoff functionality, have cost advantage.Remaining part and embodiment one are similar.
Especially, in the present embodiment, current regulator diode and driving tube are packaged in same chip IC jointly, and this chip IC has 1-8 totally 8 output leads, and current regulator diode Z1, Z2 and driving tube T1 pin are separately independently exported and be communicated in this lead-in wire, as shown in Figure 3.The scheme of this chip is further simplified the circuit of the present embodiment two, improved on the one hand the volume of circuit, improved the situation of whole modulated structure, heat radiation aspect, can realize on the other hand the integration production of driving tube T1 and current regulator diode Z1, Z2, debug simultaneously very conveniently, have higher consistency, the efficient of this programme when having promoted significantly batch production, the LED that is specially adapted to compact replaces light fixture, has good economic benefit.
The above, only for preferred embodiment of the present invention, therefore can not limit according to this scope of the invention process, the equivalence of namely doing according to the scope of the claims of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (6)
1. the linear intelligent dimming module of a LED is characterized in that: comprising:
Load circuit, this load circuit is connected between power positive cathode, comprises in turn a main constant-current source, a sampling resistor, a diode and a load of forward series connection;
Expand the stream branch road, comprise a secondary constant-current source, a driving tube and a biasing resistor, wherein should the pair constant-current source with after the CE utmost point phase forward of this driving tube is connected, then integral body is parallel to described load; This biasing resistor is connected between this load positive pole and the driving tube B utmost point; And
One triggers optocoupler, and 1,2 end of its luminous tube is in parallel with described sampling resistor forward; Its transistorized 3,4 ends extremely are connected with E with the described driving tube B utmost point respectively;
Wherein, described power positive cathode connects rectified AC power, and this AC power is from the output of controllable silicon dimmer; When dimmer was output as maximum power, this triggered the optocoupler conducting, and this main constant-current source is constant current state, and this pair constant-current source is conducting state; When this dimmer was output as non-maximum power, this triggered the optocoupler cut-off, and this main constant-current source is conducting state, and this pair constant-current source is constant current state.
2. the linear intelligent dimming module of a kind of LED according to claim 1, it is characterized in that: this load comprises the LED light source group of series connection and the electrochemical capacitor in parallel with this LED light source group.
3. the linear intelligent dimming module of a kind of LED according to claim 1, it is characterized in that: this power positive cathode connects the both positive and negative polarity of a rectifier bridge, and this rectifier bridge exchanges end and connects described dimmer output.
4. according to claim 1 and 2 or 3 linear intelligent dimming modules of described a kind of LED, it is characterized in that: described main constant-current source and negative constant-current source are current regulator diode.
5. the linear intelligent dimming module of a kind of LED according to claim 4, it is characterized in that: described current regulator diode and driving tube are packaged in same chip jointly.
6. the linear intelligent dimming module of a kind of LED according to claim 5, it is characterized in that: this chip has at least 8 output leads, and this current regulator diode and driving tube pin is separately independently exported and is communicated in this lead-in wire.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025459.2A CN103124461B (en) | 2013-01-21 | 2013-01-21 | LED linear intelligent dimming module |
| PCT/CN2013/084101 WO2014110915A1 (en) | 2013-01-21 | 2013-09-24 | Led linear intelligent dimming module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025459.2A CN103124461B (en) | 2013-01-21 | 2013-01-21 | LED linear intelligent dimming module |
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| Publication Number | Publication Date |
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| CN103124461A true CN103124461A (en) | 2013-05-29 |
| CN103124461B CN103124461B (en) | 2015-04-01 |
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| CN201310025459.2A Active CN103124461B (en) | 2013-01-21 | 2013-01-21 | LED linear intelligent dimming module |
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| CN (1) | CN103124461B (en) |
| WO (1) | WO2014110915A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014110915A1 (en) * | 2013-01-21 | 2014-07-24 | 厦门海莱照明有限公司 | Led linear intelligent dimming module |
| CN105517268A (en) * | 2014-09-25 | 2016-04-20 | 南宁市磁汇科技有限公司 | Bus current control circuit, current-constant driving controller and LED light source |
| CN105517267A (en) * | 2014-09-25 | 2016-04-20 | 南宁市磁汇科技有限公司 | Current-constant driving controller with bus current control circuit |
| CN105517269A (en) * | 2014-09-25 | 2016-04-20 | 南宁市磁汇科技有限公司 | LED light source using current-constant driving controller |
| CN117580212A (en) * | 2024-01-15 | 2024-02-20 | 杭州罗莱迪思科技股份有限公司 | Dimming lamp control method with smooth dark part |
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| CN109729615A (en) * | 2017-10-30 | 2019-05-07 | 上海泛谱电力保护设备有限公司 | A kind of novel LED illuminating replacement light source |
| CN108012384B (en) * | 2018-01-11 | 2023-10-24 | 山东旭程照明科技有限公司 | LED street lamp timing variable power driving control system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014110915A1 (en) * | 2013-01-21 | 2014-07-24 | 厦门海莱照明有限公司 | Led linear intelligent dimming module |
| CN105517268A (en) * | 2014-09-25 | 2016-04-20 | 南宁市磁汇科技有限公司 | Bus current control circuit, current-constant driving controller and LED light source |
| CN105517267A (en) * | 2014-09-25 | 2016-04-20 | 南宁市磁汇科技有限公司 | Current-constant driving controller with bus current control circuit |
| CN105517269A (en) * | 2014-09-25 | 2016-04-20 | 南宁市磁汇科技有限公司 | LED light source using current-constant driving controller |
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| CN105517269B (en) * | 2014-09-25 | 2017-12-15 | 玖明智控科技（深圳）有限公司 | A kind of LED light source using constant current drive control device |
| CN105517268B (en) * | 2014-09-25 | 2018-01-30 | 玖明智控科技（深圳）有限公司 | A kind of bus current control circuit, constant current drive control device and LED light source |
| CN117580212A (en) * | 2024-01-15 | 2024-02-20 | 杭州罗莱迪思科技股份有限公司 | Dimming lamp control method with smooth dark part |
| CN117580212B (en) * | 2024-01-15 | 2024-04-09 | 杭州罗莱迪思科技股份有限公司 | Dimming lamp control method with smooth dark part |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014110915A1 (en) | 2014-07-24 |
| CN103124461B (en) | 2015-04-01 |
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