CN107295718A - Realize the balanced synchronous drive circuit of high-power LED illumination - Google Patents
Realize the balanced synchronous drive circuit of high-power LED illumination Download PDFInfo
- Publication number
- CN107295718A CN107295718A CN201710550826.9A CN201710550826A CN107295718A CN 107295718 A CN107295718 A CN 107295718A CN 201710550826 A CN201710550826 A CN 201710550826A CN 107295718 A CN107295718 A CN 107295718A
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- power supply
- balanced
- synchronous circuit
- switching power
- electrically connected
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses the balanced synchronous drive circuit for realizing high-power LED illumination, balanced synchronous circuit is homogeneously correspondingly provided with least two Switching Power Supplies and each Switching Power Supply, output power parallel with one another alternating current is changed and provided for driving LED load adaptation between Switching Power Supply, the barrier end of balanced synchronous circuit is electrically connected with the interference signal outflow end of corresponding Switching Power Supply, the conduction terminal of balanced synchronous circuit is electrically connected with to prevent the interference signal of Switching Power Supply from flowing out and influence each other between Switching Power Supply in parallel respectively with the conduction terminal of the balanced synchronous circuit in other Switching Power Supply, the design need not spend substantial amounts of resource and time to develop design driven circuit again for the LED load of different capacity model, the interference signal of Switching Power Supply influencing each other in parallel circuit is prevented by balanced synchronous circuit, the balanced synchronous averaging of LED load while not interfere with each other between the Switching Power Supply for realizing parallel connection.
Description
Technical field
The present invention relates to LED drive circuit, the balanced synchronous drive circuit of high-power LED illumination is particularly realized.
Background technology
LED is used in the every aspect of life now, with the progress of science, and the power of LED load increasingly increases, portion
Man of subsidiary factory using single large power output switch power circuit drives great power LED to load, and such high-power output is opened
Powered-down source circuit needs personnel specially to design, and the actual power for every kind of LED load is calculated, then chooses corresponding electrical equipment
Element is built, and process is very numerous and diverse, for different types of LED load, then needs again to enter switching power circuit again
Row design.
This producer is attempted by the way of multiple low power Switching Power Supply outputs parallel with one another, and alternating current is turned
Change, and loaded for the power supply that LED load provides adaptation, but during actual design, due to being wrapped inside Switching Power Supply
Containing electric elements such as inductance, certain concussion interference signal can be produced in output, one of them low power Switching Power Supply production
Given birth to interference signal, interference signal will be flowed into other Switching Power Supplies from circuit in parallel, to other Switching Power Supplies with
And LED load is impacted.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide the equilibrium that can realize high-power LED illumination is synchronous
Drive circuit.
The technical solution adopted by the present invention is：
The balanced synchronous drive circuit of high-power LED illumination is realized, including,
It is parallel with one another with by alternating current conversion and to drive LED load between at least two Switching Power Supplies, Switching Power Supply
The output power of adaptation is provided；
Balanced synchronous circuit is homogeneously correspondingly provided with each Switching Power Supply, balanced synchronous circuit has barrier end and led
Go side and balanced synchronous circuit can prevent interference signal from flowing to conduction terminal by obstructing end, the barrier end of balanced synchronous circuit with
The interference signal outflow end of corresponding Switching Power Supply is electrically connected with, the conduction terminal of balanced synchronous circuit respectively with other switch
The conduction terminal of balanced synchronous circuit on power supply is electrically connected with to prevent the interference signal of Switching Power Supply from flowing out and mutually simultaneously
Influenced each other between the Switching Power Supply of connection.
The Switching Power Supply includes first switch power supply and second switch power supply, and first switch power supply includes first switch electricity
Source module, inductance L1, resistance R1, electric capacity C1, second switch power supply include second switch power module, inductance L2, resistance R2, electricity
Hold C2, the balanced synchronous circuit includes the first balanced synchronous circuit corresponding with first switch power supply and electric with second switch
The corresponding second balanced synchronous circuit in source, the first balanced synchronous circuit, the second balanced synchronous circuit are respectively provided with barrier end and conducting
Hold and interference signal can be prevented to flow to conduction terminal by obstructing end；
L poles input, the external communication of the L poles input of first switch power module respectively with second switch power module
The L poles of electricity are electrically connected with, the N poles input of first switch power module N poles input respectively with second switch power module,
The N poles input of external communication electricity is electrically connected with；
The cathode output end of first switch power module one end respectively with resistance R1, electric capacity C1 one end, second switch
Cathode output end, resistance R2 one end, electric capacity C2 one end, the anode of LED load of power module are electrically connected with；
The cathode output end of first switch power module is electrically connected with inductance L1 one end, second switch power module
One end of cathode output end and inductance L2 is electrically connected with；
The inductance L1 other end other end respectively with resistance R1, the electric capacity C1 other end, the first balanced synchronous circuit
End is obstructed to be electrically connected with；
The conduction terminal of first balanced the synchronous circuit conduction terminal of synchronous circuit balanced with second, the negative electrode of LED load respectively
It is electrically connected with；
The barrier end of the second balanced synchronous circuit other end respectively with electric capacity C2, the resistance R2 other end, inductance L2
The other end is electrically connected with.
The first balanced synchronous circuit includes diode D1, the diode D1 negative electrode other end respectively with inductance L1,
The resistance R1 other end, the electric capacity C1 other end are electrically connected with；Diode D1 anode balanced with second synchronous circuit respectively
Conduction terminal, the negative electrode of LED load are electrically connected with.
The second balanced synchronous circuit includes diode D2, the diode D2 negative electrode other end respectively with inductance L2,
The resistance R2 other end, the electric capacity C2 other end are electrically connected with；Diode D2 anode balanced with first synchronous circuit respectively
Conduction terminal, the negative electrode of LED load are electrically connected with.
Beneficial effects of the present invention：
Present invention driver circuit, the input of Switching Power Supply parallel with one another using at least two low power Switching Power Supplies
L poles, the N poles of external communication electricity are connected, the barrier end of balanced synchronous circuit and the interference signal outflow end of Switching Power Supply are connected,
The conduction terminal of synchronous circuit that weighs is electrically connected with the conduction terminal of the balanced synchronous circuit in other Switching Power Supply, that is, multiple
The interference signal outflow end of Switching Power Supply carries out parallel connection by corresponding balanced synchronous circuit, and the interference signal of Switching Power Supply can not
Entered by balanced synchronous circuit in other Switching Power Supply, other Switching Power Supply is impacted, the design is using more
The mode that individual small-power switching power-supply parallel connection is powered for LED load, without spending substantial amounts of resource and time to be directed to different capacity
The LED load of model develops design driven circuit again, and the interference signal for preventing Switching Power Supply by balanced synchronous circuit exists
Influencing each other in parallel circuit, realizes balanced power supply, LED load while do not interfere with each other between the Switching Power Supply of parallel connection
Balanced synchronous averaging.
Brief description of the drawings
The embodiment to the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is the circuit diagram of present invention driver circuit.
Embodiment
As shown in figure 1, the present invention realizes the balanced synchronous drive circuit of high-power LED illumination, including at least two switches
Homogeneously be correspondingly provided with power supply 1 and each Switching Power Supply 1 between balanced synchronous circuit 2, Switching Power Supply 1 it is parallel with one another with
Alternating current is changed to and provided for driving LED load 3 output power of adaptation；
Balanced synchronous circuit 2 has barrier end and conduction terminal and balanced synchronous circuit 2 can prevent interference signal by hindering
Conduction terminal is flowed to every end, the barrier end of balanced synchronous circuit 2 and the interference signal outflow end of corresponding Switching Power Supply 1 electrically connect
Connect, the conduction terminal of the conduction terminal of balanced synchronous circuit 2 respectively with the balanced synchronous circuit 2 in other Switching Power Supply 1 electrically connects
Connect to prevent the interference signal of Switching Power Supply 1 from flowing out and influence each other between Switching Power Supply 1 parallel with one another.
Wherein, Switching Power Supply 1 is typically made up of switch power module and its accessory circuit, and switch power module can be out
The parts such as powered-down source chip, while being also possible that the miscellaneous parts such as transformer, accessory circuit is typically by resistance, electric capacity, inductance
Constituted Deng electric elements, and based on the fundamental characteristics of Switching Power Supply 1, during Switching Power Supply is operated, inductance end usually can
The interference signal of concussion is flowed out, and in the preferred scheme of the design, the interference signal outflow end of Switching Power Supply 1 can be flowed herein
Go out the inductance end of the interference signal of concussion.
The design is parallel with one another using at least two low power Switching Power Supplies, and the input connection of Switching Power Supply 1 is outside
L poles, the N poles of alternating current, the barrier end of balanced synchronous circuit 2 are connected with the interference signal outflow end of Switching Power Supply 1, balanced synchronous
The conduction terminal of the conduction terminal of circuit 2 and the balanced synchronous circuit 2 in other Switching Power Supply 1 is electrically connected with, that is, multiple is opened
The interference signal outflow end in powered-down source 1 carries out parallel connection by corresponding balanced synchronous circuit 2, and the interference signal of Switching Power Supply 1 is not
It can be entered in other Switching Power Supply 1, other Switching Power Supply 1 be impacted, the design is adopted by balanced synchronous circuit 2
It is the mode that LED load 3 is powered with multiple small-power switching power-supply parallel connections, without spending substantial amounts of resource and time for difference
The LED load 3 of power model develops design driven circuit again, and the interference of Switching Power Supply 1 is prevented by balanced synchronous circuit 2
Signal influencing each other in parallel circuit, realizes balanced power supply between the Switching Power Supply 1 of parallel connection, while do not interfere with each other
The balanced synchronous averaging of LED load 3.
The preferred embodiment of the design is that the design can be made up of multiple switch power supply 1, and this sentences two and lifted
Example, the quantity of actual switch power supply 1 can be 2,3 or n, wherein, Switching Power Supply 1 includes first switch power supply 11 and the
Two Switching Power Supplies 12, first switch power supply 11 includes first switch power module 111, inductance L1, resistance R1, electric capacity C1, second
Switching Power Supply 12 includes second switch power module 121, inductance L2, resistance R2, electric capacity C2, and balanced synchronous circuit 2 includes and the
The balanced synchronous circuit 21 of one Switching Power Supply 11 corresponding first and electricity synchronous with the equilibrium of second switch power supply 12 corresponding second
Road 22, the first balanced balanced synchronous circuit 22 of synchronous circuit 21, second is respectively provided with barrier end and conduction terminal and can prevent to do
Disturb signal and flow to conduction terminal by obstructing end；
It is the L poles input of first switch power module 111 L poles input respectively with second switch power module 121, outer
The L poles of portion's alternating current are electrically connected with, the N poles input of first switch power module 111 respectively with second switch power module 121
N poles input, the N poles input of external communication electricity is electrically connected with；
The cathode output end of first switch power module 111 one end respectively with resistance R1, electric capacity C1 one end, second open
Cathode output end, resistance R2 one end, electric capacity C2 one end, the anode of LED load 3 of powered-down source module 121 are electrically connected with；
The cathode output end of first switch power module 111 is electrically connected with inductance L1 one end, second switch power supply mould
The cathode output end of block 121 is electrically connected with inductance L2 one end；
The other end, the electric capacity C1 other end, the first balanced synchronous circuit 21 of the inductance L1 other end respectively with resistance R1
Barrier end be electrically connected with；
The conduction terminal of first balanced synchronous circuit 21 conduction terminal of synchronous circuit 22 balanced with second, LED load 3 respectively
Negative electrode is electrically connected with；
The other end, the resistance R2 other end, the inductance L2 of the barrier end of second balanced synchronous circuit 22 respectively with electric capacity C2
The other end be electrically connected with.
The input connection alternating current of first switch power module 111 and second switch power module 121, first switch electricity
The anode of LED load 3 is connected after the cathode output end of source module 111 and second switch power module 121 is in parallel, is LED load 3
Power supply, electric current from LED load 3 flow through after be diverted to each balanced synchronous circuit, electric current being capable of leading from balanced synchronous circuit 2
Go side flows to barrier end, finally flows back to the cathode output end of first switch power module 111 and second switch power module 121.
And when outflow concussion interference signal in inductance L1 or inductance L2, balanced synchronous circuit will be stopped that interference signal can not
Conduction terminal is flowed to from the barrier end of balanced synchronous circuit 2, other Switching Power Supply is impacted.
And the first balanced synchronous circuit 21 includes diode D1 herein, diode D1 negative electrode is another with inductance L1 respectively
End, the resistance R1 other end, electric capacity the C1 other end are electrically connected with；Diode D1 anode synchronous circuit balanced with second respectively
22 conduction terminal, the negative electrode of LED load 3 are electrically connected with, and the second balanced synchronous circuit 22 includes diode D2, diode D2 the moon
The other end, the resistance R2 other end, the electric capacity C2 other end of pole respectively with inductance L2 are electrically connected with；Diode D2 anode point
The conduction terminal of synchronous circuit 21 not balanced with first, the negative electrode of LED load 3 are electrically connected with, and are realized herein using diode
The function of weighing apparatus synchronous circuit, diode structure is simple, and barrier property is good.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to above-mentioned embodiment, as long as with
Essentially identical means realize that the technical scheme of the object of the invention is belonged within protection scope of the present invention.
Claims (4)
1. realize the balanced synchronous drive circuit of high-power LED illumination, it is characterised in that including：
It is parallel with one another with by alternating current conversion and to drive LED load to provide between at least two Switching Power Supplies, Switching Power Supply
The output power of adaptation；
Balanced synchronous circuit is homogeneously correspondingly provided with each Switching Power Supply, balanced synchronous circuit has barrier end and conduction terminal
And balanced synchronous circuit can prevent interference signal from flowing to conduction terminal by obstructing end, the barrier end of balanced synchronous circuit with it is relative
The interference signal outflow end of the Switching Power Supply answered is electrically connected with, the conduction terminal of balanced synchronous circuit respectively with other Switching Power Supply
On balanced synchronous circuit conduction terminal be electrically connected with prevent Switching Power Supply interference signal flow out and parallel with one another
Influenced each other between Switching Power Supply.
2. the balanced synchronous drive circuit according to claim 1 for realizing high-power LED illumination, it is characterised in that：It is described
Switching Power Supply includes first switch power supply and second switch power supply, and first switch power supply includes first switch power module, inductance
L1, resistance R1, electric capacity C1, second switch power supply include second switch power module, inductance L2, resistance R2, electric capacity C2, it is described
The synchronous circuit that weighs includes the first balanced synchronous circuit corresponding with first switch power supply and corresponding with second switch power supply the
Two balanced synchronous circuits, the first balanced synchronous circuit, the second balanced synchronous circuit are respectively provided with barrier end and conduction terminal and can
Interference signal is prevented to flow to conduction terminal by obstructing end；
The L poles input of first switch power module L poles input respectively with second switch power module, external communication electricity
L poles are electrically connected with, the N poles input of first switch power module N poles input respectively with second switch power module, outside
The N poles input of alternating current is electrically connected with；
The cathode output end of first switch power module one end respectively with resistance R1, electric capacity C1 one end, second switch power supply
Cathode output end, resistance R2 one end, electric capacity C2 one end, the anode of LED load of module are electrically connected with；
The cathode output end of first switch power module is electrically connected with inductance L1 one end, the negative pole of second switch power module
Output end and inductance L2 one end are electrically connected with；
The inductance L1 other end other end respectively with resistance R1, the electric capacity C1 other end, the barrier of the first balanced synchronous circuit
End is electrically connected with；
The conduction terminal of first balanced synchronous circuit respectively the conduction terminal of synchronous circuit balanced with second, LED load negative electrode it is electrical
Connection；
The barrier end of the second balanced synchronous circuit other end respectively with electric capacity C2, the resistance R2 other end, inductance L2 it is another
End is electrically connected with.
3. the balanced synchronous drive circuit according to claim 2 for realizing high-power LED illumination, it is characterised in that：It is described
First balanced synchronous circuit includes diode D1, the diode D1 negative electrode other end respectively with inductance L1, resistance R1 it is another
End, the electric capacity C1 other end are electrically connected with；The conduction terminal of synchronous circuit balanced with second, LED are born diode D1 anode respectively
The negative electrode of load is electrically connected with.
4. the balanced synchronous drive circuit according to claim 2 for realizing high-power LED illumination, it is characterised in that：It is described
Second balanced synchronous circuit includes diode D2, the diode D2 negative electrode other end respectively with inductance L2, resistance R2 it is another
End, the electric capacity C2 other end are electrically connected with；The conduction terminal of synchronous circuit balanced with first, LED are born diode D2 anode respectively
The negative electrode of load is electrically connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710550826.9A CN107295718B (en) | 2017-07-07 | 2017-07-07 | Balanced synchronous driving circuit for realizing high-power LED illumination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710550826.9A CN107295718B (en) | 2017-07-07 | 2017-07-07 | Balanced synchronous driving circuit for realizing high-power LED illumination |
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| Publication Number | Publication Date |
|---|---|
| CN107295718A true CN107295718A (en) | 2017-10-24 |
| CN107295718B CN107295718B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710550826.9A Active CN107295718B (en) | 2017-07-07 | 2017-07-07 | Balanced synchronous driving circuit for realizing high-power LED illumination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111385941A (en) * | 2018-12-26 | 2020-07-07 | 松下知识产权经营株式会社 | Lighting control system and lighting system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527501A (en) * | 2008-03-07 | 2009-09-09 | 艾默生网络能源***有限公司 | Parallel power conversion device |
| CN102802328A (en) * | 2012-09-05 | 2012-11-28 | 英飞特电子（杭州）股份有限公司 | Constant current driver of LED (light emitting diode) light source and LED lamp |
| US20130049626A1 (en) * | 2011-08-23 | 2013-02-28 | Wanfeng Zhang | Method and apparatus for led lighting |
| CN207166819U (en) * | 2017-07-07 | 2018-03-30 | 中山市领航光电科技有限公司 | Realize the balanced synchronous drive circuit of high-power LED illumination |
-
2017
- 2017-07-07 CN CN201710550826.9A patent/CN107295718B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527501A (en) * | 2008-03-07 | 2009-09-09 | 艾默生网络能源***有限公司 | Parallel power conversion device |
| US20130049626A1 (en) * | 2011-08-23 | 2013-02-28 | Wanfeng Zhang | Method and apparatus for led lighting |
| CN102802328A (en) * | 2012-09-05 | 2012-11-28 | 英飞特电子（杭州）股份有限公司 | Constant current driver of LED (light emitting diode) light source and LED lamp |
| CN207166819U (en) * | 2017-07-07 | 2018-03-30 | 中山市领航光电科技有限公司 | Realize the balanced synchronous drive circuit of high-power LED illumination |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111385941A (en) * | 2018-12-26 | 2020-07-07 | 松下知识产权经营株式会社 | Lighting control system and lighting system |
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| CN107295718B (en) | 2023-09-12 |
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