CN103780103B - Highly-integrated LED resonance power circuit - Google Patents
Highly-integrated LED resonance power circuit Download PDFInfo
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- CN103780103B CN103780103B CN201210393883.8A CN201210393883A CN103780103B CN 103780103 B CN103780103 B CN 103780103B CN 201210393883 A CN201210393883 A CN 201210393883A CN 103780103 B CN103780103 B CN 103780103B
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- resistance
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- pfc
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- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention discloses a highly-integrated LED resonance power circuit comprising an alternating-current input rectification circuit, a PFC circuit, a PFC and LLC signal control integrated circuit, a LLC soft switching circuit, an output circuit and a feedback control circuit. The alternating-current input rectification circuit, the PFC circuit, the LLC soft switching circuit and the output circuit are connected in sequence. The PFC and LLC signal control integrated circuit is respectively connected with the PFC circuit and the LLC soft switching circuit. The feedback control circuit is respectively connected with the PFC and LLC signal control integrated circuit and the output circuit and is used for automatically controlling output voltage and current. The highly-integrated LED resonance power circuit has the following beneficial effects: the power circuit is a high-performance and high-energy-efficiency LED power supply which highly integrates various functions of PFC and LLC; the power circuit has the characteristics of high reliability and high efficiency; 95% of peak efficiency can be provided; the thermal performance of a LED power supply is improved; and meanwhile, waste of electric energy is reduced and the service life of LEDs is prolonged.
Description
【Technical field】
The present invention relates to a kind of power circuit, more particularly to a kind of highly integrated LED resonant powers circuit.
【Background technology】
Modern electronic equipment function is more and more, and the impact of the high power consumption of equipment to environment is also increasing.Improve power supply
Efficiency is one of main method of reduction power consumption.Existing LED drive power complex circuit, PFC power factor controllers and LLC
Pulsewidth modulation part is discrete, is made up of different IC chips, and EMC partial PFCs and PWM are interfered with each other, and peripheral cell is various, and structure is multiple
Miscellaneous, power volume is huge, heaviness, is difficult production, and repair rate is high, and holistic cost is high.
【The content of the invention】
It is an object of the invention to overcome deficiency of the prior art, there is provided a kind of highly integrated LED resonant powers circuit.
The object of the present invention is achieved like this：It includes exchange input rectification circuit, pfc circuit, PFC and LLC signals
Control integrated circuit, LLC soft switch circuits, output circuit and feedback control circuit；The exchange input rectification circuit, PFC are electric
Road, LLC soft switch circuits and output circuit are sequentially connected, PFC and LLC signals control integrated circuit respectively with pfc circuit,
LLC soft switch circuits connect；The feedback control circuit controls integrated circuit with PFC and LLC signals respectively and output circuit connects
Connect, for automatically controlling output voltage electric current.
Preferably, PFC the and LLC signals control integrated circuit is also associated with programmable soft starting circuit, for arranging
The time of startup.
Preferably, the output circuit is connected by transformator with LLC soft switch circuits, for providing stable to LED
Voltage and current.
Preferably, AC rectification is supplied pfc circuit by the exchange input rectification circuit into high direct voltage.
The invention has the beneficial effects as follows：The present invention is that the highly integrated high-performance in one of PFC and LLC several functions is high
The LED power of efficiency, with high reliability and efficient feature, it is possible to provide 95% peak efficiencies, improves the heat of LED power
Performance, while reducing the waste of electric energy, extends the life-span of LED；In addition, the highly integrated various protection work(of control chip
Can, peripheral cell is greatly decreased, power supply architecture simplifies, and circuit is simple, reduces the size of PCB, and improve LED power can
By property and ruggedness, repair rate and reduces cost are reduced, and power volume is little, lightweight, it is easy to produce, first-pass yield is high, profit
It is significantly increased, great practical value and economic benefit, with wide market prospect.
【Description of the drawings】
Fig. 1 is the schematic block circuit diagram of the present invention；
Fig. 2 is the circuit theory diagrams of the present invention.
【Specific embodiment】
Below in conjunction with the accompanying drawings and specific embodiment is described further to the present invention：
As shown in figure 1, the highly integrated LED resonant powers circuit of the present invention, including exchange input rectification circuit, PFC electric
Road, PFC and LLC signals control integrated circuit, LLC soft switch circuits, output circuit, feedback control circuit and programmable soft start
Circuit；The exchange input rectification circuit, pfc circuit, LLC soft switch circuits and output circuit are sequentially connected, the PFC and
LLC signals control integrated circuit is connected respectively with pfc circuit, LLC soft switch circuits；The feedback control circuit respectively with PFC
And LLC signals control integrated circuit and output circuit connection, for automatically controlling output voltage electric current；The programmable soft start
Circuit is connected with PFC and LLC signals control integrated circuit.
The control chip U100 of the PFC and LLC signals control integrated circuit adopts ON NCP1910, and it is height
Integrated power factor correcting (PFC) and resonance oscillation semi-bridge (LLC) and the whole signal exchange functions needed for high drive transducer, carry
For PFC/LLC control signals, reliability is improve, support the simpler, design of more power density.
The exchange input rectification circuit is connected to alternating current power supply, and it includes four diodes (D3, D4, D7, D8) and electricity
Hold C5, constitute bridge rectifier filter circuit, its outfan is connected with pfc circuit, AC rectification can be filtered into into high direct voltage
Supply pfc circuit.
The pfc circuit include diode D1, D2, D10, inductance L4, electric capacity C1, C6, C9, C10, C11, C16, C17,
Metal-oxide-semiconductor X3, resistance R1, R2, R4, R5, R19, R20, R23, R24, R25, R27, R31, R33, R34, R35, audion Q1, inductance
The high direct voltage of the one termination rectifying and wave-filtering of L4, the positive pole of another terminating diode D2 and the drain electrode of metal-oxide-semiconductor X3, diode D2's
Negative pole connects the positive pole of electric capacity C1；D10 negative poles connect the grid of metal-oxide-semiconductor X3, diode D10 positive pole connecting resistance R19 one end, resistance
Another termination PFC and LLC signals of R19 control the feet of control chip U100 the 18th of integrated circuit, constitute the drive signal portion of PFC
Point；One end of resistance R31 connects respectively the 16th foot of the source electrode of metal-oxide-semiconductor X3, the negative pole of electric capacity C1, control chip U100, the other end
One end of connecting resistance R35, the R35 other ends connect the 14th foot of U100 by resistance R32, constitute the over-current detection part of PFC；Electric capacity
C6 and resistance R23 are in parallel, and the 12nd foot of control chip U100 distinguishes one end of connecting resistance R23 and resistance R5, and resistance R5's is another
Hold and one end that inductance L4 accesses rectifying and wave-filtering high direct voltage, composition PFC input voltage measurements part are connected to by resistance R1；
R24 is in parallel with C17, and the 9th foot of control chip U100 is connected respectively with one end of R24 and resistance R4, and the other end of resistance R4 leads to
The positive pole that resistance R2 meets electric capacity C1 is crossed, PFC output detection circuits are constituted.
The programmable soft starting circuit includes electric capacity C2 and resistance R6, and one end of electric capacity C2 is connected with one end of resistance R6
And the 1st foot of control chip U100 is connect, the other end ground connection of electric capacity C2, the other end of resistance R6 connects respectively control chip U100's
One end of 2nd foot, resistance R12 and R22；By the time for setting the size of electric capacity C2 to arrange startup.
In the feedback control circuit, resistance R36 is in parallel with phototriode U2B after connecting with electric capacity C19, photosensitive three pole
The colelctor electrode of pipe U2B connects the 2nd foot of control chip U100 by resistance R12, and the colelctor electrode of phototriode U3B connects the of U100
4 feet, resistance R13 mono- terminates the 5th foot of control chip U100, and the other end is grounded, and one end of resistance R15 connects control core by R14
6th foot of piece U100, one end of another terminating resistor R13, one end of resistance R15 also connects with the 7th foot of control chip U100,
The emitter stage of phototriode U3B is connected respectively with the emitter stage of resistance R22, the other end of electric capacity C19 and phototriode U2B
One end of shunt-wound capacitance C18, the other end of electric capacity C18 connects the 14th foot of control chip U100 by resistance R32.
The LLC soft switch circuits are by VFC Sofe Switch, and efficiency high, EMI are little, and it includes metal-oxide-semiconductor M1, M2, electricity
Resistance R8, R9, R16, R17, R26, R29, electric capacity C3, C12, C21, C14, C15, diode D5, D11, D12, inductance L5, resistance R8
A foot connect the 23rd foot of control chip U100, another foot connects the grid of metal-oxide-semiconductor M1, and the drain electrode of M1 connects the positive pole of C1, the source of M1
Pole connects the drain electrode of M2, the source ground of M2, and the grid of M2 connects the 20th foot of U100 by resistance R16, constitutes the drive of LLC Sofe Switch
Dynamic part；22nd foot of the one termination control chip U100 of inductance L5, armature winding one end of another termination transformator T1, transformation
The armature winding other end of device T1 meets respectively one end of electric capacity C14 and electric capacity C15, the other end difference connecting resistance R29 of electric capacity C15
One end, the negative pole of diode D12, the positive level of diode D11, the other end of electric capacity C14 and the other end of resistance R29, two poles
The positive pole of pipe D12 is connected and is grounded, and the negative level of D11 connects respectively electric capacity C12, the 15th foot of resistance R26 and U100, and electric capacity C21 is just
Pole connects electric capacity C12, the resistance R26 connection between the negative level of VCC, electric capacity C21 negative poles and D11 in parallel, constitutes LLC Sofe Switch
Over-current detection part.
Output circuit includes secondary windings, diode D6 and D9, electric capacity C4 and C7, resistance R10, the R11 of transformator T1,
R18, R30, adjustable reference source U1, the terminating diode D6 positive poles of secondary windings one of transformator T1, the secondary windings of transformator T1
Another terminating diode D9 positive poles, diode D6 negative poles connect diode D9 negative poles and electric capacity C4 positive poles, electric capacity C4 minus earths, electricity
The resistance termination capacitor C4 positive poles of R10 mono-, the other end meets respectively one end of electric capacity C7, the negative electrode K of adjustable reference source U1 by resistance R18
One end, the other end of electric capacity C7, one end of resistance R11 of connecting resistance R30 are distinguished in end, the control end R end of adjustable reference source U1, electricity
The other end of resistance R30 is connected with the anode A end of adjustable reference source U1 and meets GND, another termination output end vo ut ends of resistance 11,
Composition output detection part.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out appropriate change and modification.Therefore, specific embodiment disclosed and described above is the invention is not limited in, to this
Some modifications and changes of invention should also be as falling in the scope of the claims of the present invention.Although additionally, this specification
Used in some specific terms, but these terms are merely for convenience of description, do not constitute any restriction to the present invention.
Claims (3)
1. a kind of highly integrated LED resonant powers circuit, it is characterised in that：Including exchange input rectification circuit, pfc circuit, PFC
And LLC signals control integrated circuit, LLC soft switch circuits, output circuit and feedback control circuit；The exchange input rectifying electricity
Road, pfc circuit, LLC soft switch circuits and output circuit are sequentially connected, PFC and LLC signals control integrated circuit respectively with
Pfc circuit, the connection of LLC soft switch circuits；The feedback control circuit controls integrated circuit and defeated with PFC and LLC signals respectively
Go out circuit connection, for automatically controlling output voltage electric current；
PFC the and LLC signals control integrated circuit is also associated with programmable soft starting circuit, for arranging the time for starting；
The exchange input rectification circuit is connected to alternating current power supply, the exchange input rectification circuit include diode D3, D4,
D7, D8 and electric capacity C5, its outfan is connected with pfc circuit；
The pfc circuit includes diode D1, D2, D10, inductance L4, electric capacity C1, C6, C9, C10, C11, C16, C17, metal-oxide-semiconductor
X3, resistance R1, R2, R4, R5, R19, R20, R23, R24, R25, R27, R31, R33, R34, R35, audion Q1, inductance L4's
The high direct voltage of one termination rectifying and wave-filtering, the positive pole of another terminating diode D2 and the drain electrode of metal-oxide-semiconductor X3, the negative pole of diode D2
The positive pole of connection electric capacity C1；D10 negative poles connect the grid of metal-oxide-semiconductor X3, and diode D10 positive pole connecting resistance R19 one end, resistance R19 is another
One termination PFC and LLC signals control the feet of control chip U100 the 18th of integrated circuit, constitute the drive signal part of PFC；Resistance
One end of R31 connects respectively the 16th foot of the source electrode of metal-oxide-semiconductor X3, the negative pole of electric capacity C1, control chip U100, another terminating resistor
One end of R35, the R35 other ends connect the 14th foot of U100 by resistance R32, constitute the over-current detection part of PFC；Electric capacity C6 and electricity
R23 is in parallel for resistance, and the 12nd foot of control chip U100 distinguishes one end of connecting resistance R23 and resistance R5, and the other end of resistance R5 passes through
Resistance R1 is connected to one end that inductance L4 accesses rectifying and wave-filtering high direct voltage, composition PFC input voltage measurements part；R24 and C17
Parallel connection, the 9th foot of control chip U100 is connected respectively with one end of R24 and resistance R4, and the other end of resistance R4 passes through resistance R2
The positive pole of electric capacity C1 is connect, PFC output detection circuits are constituted；
The programmable soft starting circuit includes electric capacity C2 and resistance R6, and one end of electric capacity C2 is connected and connects with one end of resistance R6
1st foot of control chip U100, the other end ground connection of electric capacity C2, the other end of resistance R6 connects respectively the 2nd of control chip U100 the
One end of foot, resistance R12 and R22；By the time for setting the size of electric capacity C2 to arrange startup；
In the feedback control circuit, resistance R36 is in parallel with phototriode U2B after connecting with electric capacity C19, phototriode
The colelctor electrode of U2B connects the 2nd foot of control chip U100 by resistance R12, and the colelctor electrode of phototriode U3B connects the 4th of U100 the
Foot, resistance R13 mono- terminates the 5th foot of control chip U100, and the other end is grounded, and one end of resistance R15 connects control chip by R14
6th foot of U100, one end of another terminating resistor R13, one end of resistance R15 also connects with the 7th foot of control chip U100, light
The emitter stage of quick audion U3B is connected simultaneously respectively with the emitter stage of resistance R22, the other end of electric capacity C19 and phototriode U2B
One end of electric capacity C18 is connect, the other end of electric capacity C18 connects the 14th foot of control chip U100 by resistance R32；
The LLC soft switch circuits include metal-oxide-semiconductor M1, M2, resistance by VFC Sofe Switch, the LLC soft switch circuits
R8, R9, R16, R17, R26, R29, electric capacity C3, C12, C21, C14, C15, diode D5, D11, D12, inductance L5, resistance R8's
One foot connects the 23rd foot of control chip U100, and another foot connects the grid of metal-oxide-semiconductor M1, and the drain electrode of M1 connects the positive pole of C1, the source electrode of M1
The drain electrode of M2, the source ground of M2 are connect, the grid of M2 connects the 20th foot of U100 by resistance R16, constitutes the driving of LLC Sofe Switch
Part；22nd foot of the one termination control chip U100 of inductance L5, armature winding one end of another termination transformator T1, transformator
The armature winding other end of T1 connects respectively one end of electric capacity C14 and electric capacity C15, the other end difference connecting resistance R29's of electric capacity C15
One end, the negative pole of diode D12, the positive level of diode D11, the other end of electric capacity C14 and the other end, the diode of resistance R29
The positive pole of D12 is connected and is grounded, and the negative level of D11 connects respectively electric capacity C12, the 15th foot of resistance R26 and U100, electric capacity C21 positive poles
Electric capacity C12, the resistance R26 connection between the negative level of VCC, electric capacity C21 negative poles and D11 in parallel is connect, LLC Sofe Switch is constituted
Over-current detection part；
The output circuit includes secondary windings, diode D6 and D9, electric capacity C4 and C7, resistance R10, the R11 of transformator T1,
R18, R30, adjustable reference source U1, the terminating diode D6 positive poles of secondary windings one of transformator T1, the secondary windings of transformator T1
Another terminating diode D9 positive poles, diode D6 negative poles connect diode D9 negative poles and electric capacity C4 positive poles, electric capacity C4 minus earths, electricity
The resistance termination capacitor C4 positive poles of R10 mono-, the other end meets respectively one end of electric capacity C7, the negative electrode K of adjustable reference source U1 by resistance R18
One end, the other end of electric capacity C7, one end of resistance R11 of connecting resistance R30 are distinguished in end, the control end R end of adjustable reference source U1, electricity
The other end of resistance R30 is connected with the anode A end of adjustable reference source U1 and meets GND, another termination output end vo ut ends of resistance 11,
Composition output detection part.
2. highly integrated LED resonant powers circuit according to claim 1, it is characterised in that：The output circuit passes through
Transformator is connected with LLC soft switch circuits, for providing stable voltage and current to LED.
3. highly integrated LED resonant powers circuit according to claim 1, it is characterised in that：The exchange input rectifying
AC rectification is supplied pfc circuit by circuit into high direct voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210393883.8A CN103780103B (en) | 2012-10-17 | 2012-10-17 | Highly-integrated LED resonance power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210393883.8A CN103780103B (en) | 2012-10-17 | 2012-10-17 | Highly-integrated LED resonance power circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103780103A CN103780103A (en) | 2014-05-07 |
| CN103780103B true CN103780103B (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210393883.8A Expired - Fee Related CN103780103B (en) | 2012-10-17 | 2012-10-17 | Highly-integrated LED resonance power circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN103780103B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108566699A (en) * | 2018-01-17 | 2018-09-21 | 深圳市和拓创新科技有限公司 | A kind of LED drive circuit device of automobile-used wide range input |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102271443A (en) * | 2010-06-07 | 2011-12-07 | 常州丰泰机电工程有限公司 | Self-adapting LED (light-emitting diode) driving power supply |
| CN202160318U (en) * | 2011-08-02 | 2012-03-07 | 深圳美凯电子股份有限公司 | Light-emitting diode (LED) road lamp power supply with adjustable voltage and current |
| CN202997951U (en) * | 2012-10-17 | 2013-06-12 | 深圳美凯电子股份有限公司 | High-integrated LED resonance power circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7911812B2 (en) * | 2007-01-22 | 2011-03-22 | Power Integrations, Inc. | Control arrangement for a PFC power converter |
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2012
- 2012-10-17 CN CN201210393883.8A patent/CN103780103B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102271443A (en) * | 2010-06-07 | 2011-12-07 | 常州丰泰机电工程有限公司 | Self-adapting LED (light-emitting diode) driving power supply |
| CN202160318U (en) * | 2011-08-02 | 2012-03-07 | 深圳美凯电子股份有限公司 | Light-emitting diode (LED) road lamp power supply with adjustable voltage and current |
| CN202997951U (en) * | 2012-10-17 | 2013-06-12 | 深圳美凯电子股份有限公司 | High-integrated LED resonance power circuit |
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| Publication number | Publication date |
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| CN103780103A (en) | 2014-05-07 |
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