CN108449832A - A kind of high performance lED power supply - Google Patents
A kind of high performance lED power supply Download PDFInfo
- Publication number
- CN108449832A CN108449832A CN201810245370.XA CN201810245370A CN108449832A CN 108449832 A CN108449832 A CN 108449832A CN 201810245370 A CN201810245370 A CN 201810245370A CN 108449832 A CN108449832 A CN 108449832A
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- Prior art keywords
- module
- diode
- capacitance
- output
- ripple
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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]
Abstract
The invention discloses a kind of high performance lED power supplys, including EMI modules, rectification module, input filter module, PWM control modules, switching tube, transformer, output filter module, ripple, which is considered, removes module and surge absoption module, the input filter module is connected by primary winding with switching tube output end, the PWM control modules output end is connected with switch controlled end, the transformer secondary output winding is connected with output filter module, the ripple is considered except module is connected with output filter module, the surge absoption module is arranged between rectification module and input filter module.The present invention filters out module by ripple and realizes that the ripple of the voltage and current of switched power output is considered except function, to reduce ripple interference output, voltage current impact caused by lightning surge is absorbed using surge absoption module simultaneously, improves the interference free performance and security performance of Switching Power Supply.The invention is for driving LED light source.
Description
Technical field
The present invention relates to electric circuit constructions, more specifically to a kind of LED power of superior performance.
Background technology
In existing LED drive schemes, Switching Power Supply receives favor since its calorific value is inefficient high.
Switching Power Supply in the process of running, since switching tube needs to carry out high-frequency break-make, causes Switching Power Supply to exist
Larger output ripple interference, causes load system (especially communication system) possibility of false triggering occur, or even load
The case where damage;In addition in existing Switching Power Supply, in order to ensure that power supply is being that can work normally by lightning surge, usually
Varistor and insurance resistance can be added in Switching Power Supply input terminal, but it is ineffective, and Switching Power Supply encounters at work
Lightning surge still will appear larger damage probability.
Invention content
The technical problem to be solved by the present invention is to:A kind of high performance LED power circuit structure is provided.
The solution that the present invention solves its technical problem is:
A kind of high performance lED power supply, including EMI modules, rectification module, input filter module, PWM control modules, switch
Pipe, transformer and output filter module, the matched transformer are equipped with armature winding and secondary windings, the EMI modules, whole
Flow module, input filter module are sequentially connected, and the input filter module passes through primary winding and switching tube output end
It is connected, the PWM control modules output end is connected with switch controlled end, the transformer secondary output winding and output filter module
It is connected;The LED power further includes that ripple is considered except module and surge absoption module, and the ripple is considered except module and output filtering
Module is connected, and the surge absoption module is arranged between rectification module and input filter module;The surge absoption module
It is connected on rectification module and input filter including inductance L1, diode D1, diode D2, capacitance C1 and resistance R1, the inductance L1
Between wave module, the both ends the inductance L1 are connected with diode D1 with diode D2 anodes respectively, the diode D1 cathode with
Diode D2 cathode are grounded by resistance R1, and the capacitance C1 is in parallel with resistance R1.
As a further improvement of the above technical scheme, the ripple is considered except module includes diode D3, diode D4, electricity
Hold C2, capacitance C3, capacitance C4 and inductance L2, the diode D3 positive electrode and negative electrode respectively with transformer secondary output winding both ends phase
Even, the diode D3 cathode are connected with diode D4 anodes, the diode D4 cathode with pass through capacitance C2 and diode D3
Anode is connected, and the capacitance C3 is in parallel with capacitance C2, and the diode D4 is connected by inductance L2 with capacitance C4.
As a further improvement of the above technical scheme, it further includes by common mode inductance L3 and electricity that the ripple, which filters out module,
Hold the common-mode filter of C5 compositions, the capacitance C4 is connected with common-mode filter.
As a further improvement of the above technical scheme, the PWM control modules include the constant current control of model BP3108
Coremaking piece, the current constant control chip output are connected with switch controlled end.
The beneficial effects of the invention are as follows:The present invention filters out the voltage and current that module realizes switched power output by ripple
Ripple consider remove function, with reduce ripple interference output, while using surge absoption module absorb lightning surge caused by electricity
Current voltage impacts, and improves the interference free performance and security performance of Switching Power Supply.The invention is for driving LED light source.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiment of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is the circuit diagram of the present invention.
Specific implementation mode
The technique effect of the design of the present invention, concrete structure and generation is carried out below with reference to embodiment and attached drawing clear
Chu, complete description, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
The other embodiment obtained under the premise of creative work, belongs to the scope of protection of the invention.In addition, be previously mentioned in text
All connection relations, not single finger element directly connects, and referring to can be according to specific implementation situation, by adding or reducing connection
Element, to form more preferably circuit structure.Each technical characteristic in the invention, under the premise of not conflicting conflict
It can be with combination of interactions.
Referring to Fig.1, the invention discloses a kind of high performance lED power supply, including EMI modules, rectification module, input filter
Wave module, PWM control modules, switching tube, transformer and output filter module, the matched transformer be equipped with armature winding and
Secondary windings, the EMI modules, rectification module, input filter module are sequentially connected, and the input filter module passes through transformer
Armature winding is connected with switching tube output end, and the PWM control modules output end is connected with switch controlled end, the transformer
Secondary windings is connected with output filter module;The LED power further includes that ripple is considered except module and surge absoption module, described
Ripple is considered except module is connected with output filter module, and the surge absoption module is arranged in rectification module and input filter module
Between;The surge absoption module includes inductance L1, diode D1, diode D2, capacitance C1 and resistance R1, the inductance L1
Be connected between rectification module and input filter module, the both ends the inductance L1 respectively with diode D1 and diode D2 anode phases
Even, the diode D1 cathode are grounded by resistance R1 with diode D2 cathode, and the capacitance C1 is in parallel with resistance R1.Specifically
There is lightning surge input on ground, the both ends inductance L1 are due to surge voltage electricity caused by lightning surge when Switching Power Supply is run
Stream passes through diode D1 and diode D2 and carries out charging energy-storing to capacitance C1 respectively, and capacitance C1 is put by resistance R1 later
Electricity, to eliminate voltage and current caused by lightning surge.The present invention filters out module by ripple and realizes switched power output
The ripple of voltage and current, which is considered, removes function, to reduce ripple interference output, while absorbing lightning surge institute using surge absoption module
The voltage current impact brought improves the interference free performance and security performance of Switching Power Supply.
It is further used as preferred embodiment, in the invention specific implementation mode, the ripple, which is considered, removes module packet
Include diode D3, diode D4, capacitance C2, capacitance C3, capacitance C4 and inductance L2, the diode D3 positive electrode and negative electrode difference
It is connected with transformer secondary output winding both ends, the diode D3 cathode are connected with diode D4 anodes, the diode D4 cathode
It is connected with diode D3 anodes with by capacitance C2, the capacitance C3 is in parallel with capacitance C2, and the diode D4 passes through inductance L2
It is connected with capacitance C4.Specifically, diode D3 described in the invention, diode D4 and capacitance C2 constitute two times of rectifications
Circuit, the capacitance C3, capacitance C4 and inductance L2 constitute π type differential mode filters.It is poor by two times of rectification circuits and π types
Mode filter jointly reduces Switching Power Supply output ripple.
It is further used as preferred embodiment, to further increase the reducing effect of Switching Power Supply output ripple, this hair
In bright creation specific implementation mode, it further includes the common mode filter being made of common mode inductance L3 and capacitance C5 that the ripple, which filters out module,
Wave device, the capacitance C4 is connected with common-mode filter, by the common-mode filter, effectively by switch power source output voltage electric current
Common-mode signal worry remove.
It is further used as preferred embodiment, in the invention specific implementation mode, the PWM control modules include
The current constant control chip of model BP3108, the current constant control chip output are connected with switch controlled end.
The better embodiment of the present invention is illustrated above, but the invention is not limited to the implementation
Example, those skilled in the art can also make various equivalent modifications or be replaced under the premise of without prejudice to spirit of that invention
It changes, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (4)
1. a kind of high performance lED power supply, it is characterised in that:Including EMI modules, rectification module, input filter module, PWM controls
Module, switching tube, transformer and output filter module, the matched transformer is equipped with armature winding and secondary windings, described
EMI modules, rectification module, input filter module are sequentially connected, the input filter module by primary winding with open
Close pipe output end be connected, the PWM control modules output end is connected with switch controlled end, the transformer secondary output winding with it is defeated
Go out filter module to be connected;The LED power further includes that ripple is considered except module and surge absoption module, and the ripple, which is considered, removes module
It is connected with output filter module, the surge absoption module is arranged between rectification module and input filter module;The wave
It includes that inductance L1, diode D1, diode D2, capacitance C1 and resistance R1, the inductance L1 are connected on rectification mould to gush absorption module
Between block and input filter module, the both ends the inductance L1 are connected with diode D1 with diode D2 anodes respectively, two pole
Pipe D1 cathode are grounded by resistance R1 with diode D2 cathode, and the capacitance C1 is in parallel with resistance R1.
2. a kind of high performance lED power supply according to claim 1, it is characterised in that:The ripple is considered except module includes two
Pole pipe D3, diode D4, capacitance C2, capacitance C3, capacitance C4 and inductance L2, the diode D3 positive electrode and negative electrode respectively with change
Depressor secondary windings both ends be connected, the diode D3 cathode are connected with diode D4 anodes, the diode D4 cathode and lead to
It crosses capacitance C2 with diode D3 anodes to be connected, the capacitance C3 is in parallel with capacitance C2, and the diode D4 passes through inductance L2 and electricity
Hold C4 to be connected.
3. a kind of high performance lED power supply according to claim 2, it is characterised in that:The ripple filters out module
The common-mode filter being made of common mode inductance L3 and capacitance C5, the capacitance C4 are connected with common-mode filter.
4. a kind of high performance lED power supply according to claim 3, it is characterised in that:The PWM control modules include model
For the current constant control chip of BP3108, the current constant control chip output is connected with switch controlled end.
Priority Applications (1)
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CN201810245370.XA CN108449832A (en) | 2018-03-23 | 2018-03-23 | A kind of high performance lED power supply |
Applications Claiming Priority (1)
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CN201810245370.XA CN108449832A (en) | 2018-03-23 | 2018-03-23 | A kind of high performance lED power supply |
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CN108449832A true CN108449832A (en) | 2018-08-24 |
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CN201810245370.XA Pending CN108449832A (en) | 2018-03-23 | 2018-03-23 | A kind of high performance lED power supply |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113676066A (en) * | 2021-08-31 | 2021-11-19 | 深圳市雅晶源科技有限公司 | EMI shielding system of gallium nitride quick charging source |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005026001A (en) * | 2003-06-30 | 2005-01-27 | Toshiba Lighting & Technology Corp | Embedded beacon light device |
CN103117656A (en) * | 2013-02-23 | 2013-05-22 | 杭州乐图光电科技有限公司 | Voltage surge standing protection circuit and switching power supply with same |
CN203872404U (en) * | 2014-05-22 | 2014-10-08 | 厦门锜仕达光电科技有限公司 | Circuit structure of LED driving power supply capable of realizing light adjustment and color adjustment through silicon controlled dimmer |
CN106972742A (en) * | 2017-05-27 | 2017-07-21 | 孙宏宇 | A kind of switching power circuit of the extremely low Ripple Noise of High voltage output |
-
2018
- 2018-03-23 CN CN201810245370.XA patent/CN108449832A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005026001A (en) * | 2003-06-30 | 2005-01-27 | Toshiba Lighting & Technology Corp | Embedded beacon light device |
CN103117656A (en) * | 2013-02-23 | 2013-05-22 | 杭州乐图光电科技有限公司 | Voltage surge standing protection circuit and switching power supply with same |
CN203872404U (en) * | 2014-05-22 | 2014-10-08 | 厦门锜仕达光电科技有限公司 | Circuit structure of LED driving power supply capable of realizing light adjustment and color adjustment through silicon controlled dimmer |
CN106972742A (en) * | 2017-05-27 | 2017-07-21 | 孙宏宇 | A kind of switching power circuit of the extremely low Ripple Noise of High voltage output |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113676066A (en) * | 2021-08-31 | 2021-11-19 | 深圳市雅晶源科技有限公司 | EMI shielding system of gallium nitride quick charging source |
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Application publication date: 20180824 |