CN103517484A - Spotlight driving circuit and spotlight - Google Patents
Spotlight driving circuit and spotlight Download PDFInfo
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- CN103517484A CN103517484A CN201210199049.5A CN201210199049A CN103517484A CN 103517484 A CN103517484 A CN 103517484A CN 201210199049 A CN201210199049 A CN 201210199049A CN 103517484 A CN103517484 A CN 103517484A
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- winding
- power factor
- factor correction
- energy storage
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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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention relates to a spotlight driving circuit. The spotlight driving circuit comprises a rectifier filter module, a power factor correction module, a primary side energy storage filter unit, a secondary energy storage filter unit and a winding energy storage filter unit. The primary side energy storage filter unit comprises a primary side coil. The secondary energy storage filter unit comprises a secondary coil. The winding energy storage filter unit comprises a winding coil. A transformer is formed by the three coils. The rectifier filter module is used to perform rectification and filtration on inputted electric energy and then output direct current to the power factor correction module. The power factor correction module is used to output the current which is subjected to power factor correction to the primary side coil. The secondary coil is used to generate an induced voltage and output the induced voltage to an LED light source. The winding coil is also used to generate an induced voltage to maintain the input voltage of the power factor correction module. The invention further relates to a spotlight. According to the invention, the current of the primary side coil of the transformer is controlled through the power factor correction module, so a high PF(power factor) value can be obtained, so that the effect of energy saving can be achieved.
Description
Technical field
The present invention relates to lighting apparatus, particularly relate to a kind of spotlight drive circuit, also relate to a kind of shot-light.
Background technology
Shot-light is a kind of lighting without king light.Traditional rated power is the GU10 series shot-light of 3W, in order to save cost, PF(power factor conventionally) value can only reach 0.5 ~ 0.6 left and right, thereby cause the waste of the energy.
Summary of the invention
Based on this, be necessary for the spotlight drive circuit that a kind of high PF value is provided.
, comprise rectification filtering module, power factor correction module ,Yuan limit energy storage filter unit, secondary energy storage filter unit and winding energy storage filter unit; Described former limit energy storage filter unit comprises primary coil, and described secondary energy storage filter unit comprises secondary coil, and described winding energy storage filter unit comprises winding coil, and described primary coil, secondary coil and winding coil form transformer; Described rectification filtering module connects former limit energy storage filter unit and power factor correction module, described power factor correction module connects described former limit energy storage filter unit and winding energy storage filter unit, and the output of described secondary energy storage filter unit is used for connecting LED light source; Described rectification filtering module carries out the electric energy of input to export direct current to described power factor correction module after rectifying and wave-filtering, described power factor correction module is exported to described primary coil by the electric current carrying out after power factor correction, described secondary coil produces induced voltage and exports to described LED light source, and described winding coil also produces induced voltage to maintain the input voltage of described power factor correction module.
Therein in an embodiment, described power factor correction module comprises Power Factor Correction Control chip, switching tube, loop compensation electric capacity, loop compensation resistance, sampling resistor, zero passage detection resistance, the first divider resistance and the second divider resistance, the current sample pin of described Power Factor Correction Control chip is by described sampling resistor ground connection, and described current sample pin connects the output of described switching tube; The lower margin ground connection of described Power Factor Correction Control chip; The loop compensation pin of described Power Factor Correction Control chip is by described loop compensation electric capacity and the loop compensation grounding through resistance of series connection; The zero passage detection pin of described Power Factor Correction Control chip is by described zero passage detection grounding through resistance, and described zero passage detection pin connects described winding energy storage filter unit by described the second divider resistance; The voltage input pin of described Power Factor Correction Control chip connects described rectification filtering module and winding energy storage filter unit; The driving pin of described Power Factor Correction Control chip connects the control end of described switching tube, and described driving pin connects one end of described sampling resistor ground connection by described the first divider resistance; The input of described switching tube connects described former limit energy storage filter unit.
Therein in an embodiment, described former limit energy storage filter unit also comprises former limit filter capacitor ,Yuan limit resistance and former limit fly-wheel diode, the anode of the one former limit of termination fly-wheel diode of described primary coil, the negative electrode of described former limit fly-wheel diode respectively one end of filter capacitor He Yuan limit, Yu Yuan limit resistance connects, and the other end of filter capacitor He Yuan limit, described former limit resistance all connects the other end of primary coil; The input of described switching tube is the anode that connects He Yuan limit, one end fly-wheel diode of described primary coil.
Therein in an embodiment, described secondary energy storage filter unit also comprises secondary filter capacitor, secondary resistance and secondary fly-wheel diode, the anode of one terminates secondary fly-wheel diode of described secondary coil, the negative electrode of described secondary fly-wheel diode is connected with one end of secondary filter capacitor and secondary resistance respectively, and the other end of described secondary filter capacitor and secondary resistance is all connected the other end of secondary coil.
Therein in an embodiment, described winding energy storage filter unit also comprises winding filter capacitor, winding resistance and winding fly-wheel diode, the anode of one termination winding fly-wheel diode of described winding coil, the negative electrode of described winding fly-wheel diode passes through described winding filter capacitor ground connection, the other end ground connection of described winding coil after connecting with winding resistance; Described voltage input pin is the node connecting between winding resistance and winding electric capacity, and described the second divider resistance is the node connecting between described winding coil and the anode of winding fly-wheel diode.
In an embodiment, described power factor correction module also comprises the starting resistance being connected between described rectification filtering module and voltage input pin therein, and described voltage input pin is to connect rectification filtering module by described starting resistance.
In an embodiment, described power factor correction module also comprises the current-limiting resistance being connected between described driving pin and the control end of switching tube therein.
In an embodiment, described switching tube is N-channel MOS pipe therein, and described control end is grid, and described input is drain electrode, and described output is source electrode.
In an embodiment, described spotlight drive circuit is laid on the printed circuit board (PCB) of dual panel type therein, and the components and parts of described spotlight drive circuit are surface mount device.
Also be necessary to provide a kind of shot-light of high PF value, comprise LED light source and for driving the aforementioned spotlight drive circuit of described LED light source work.
Above-mentioned spotlight drive circuit and shot-light, the electric current of the primary coil by power factor correction module control transformer, therefore can obtain higher PF value, reaches energy-conservation effect.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of spotlight drive circuit in an embodiment;
Fig. 2 is the circuit theory diagrams of spotlight drive circuit in an embodiment;
Fig. 3 is the structural representation of transformer in an embodiment.
Embodiment
For object of the present invention, feature and advantage can more be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 is the electrical block diagram of spotlight drive circuit in an embodiment, and spotlight drive circuit 100 comprises rectification filtering module 10, power factor correction module 20,Yuan limit energy storage filter unit 22, secondary energy storage filter unit 32 and winding energy storage filter unit 24.Former limit energy storage filter unit 22 comprises primary coil 222, and secondary energy storage filter unit 32 comprises secondary coil 322, and winding energy storage filter unit comprises winding coil 242, and primary coil 222, secondary coil 322 and winding coil 242 form transformer.Rectification filtering module 10 connects former limit energy storage filter unit 22 and power factor correction module 20, power factor correction module 20 connects former limit energy storage filter unit 22 and winding energy storage filter unit 24, the output of secondary energy storage filter unit 32 connects LED light source, for LED light source provides work energy.This LED light source can be that a plurality of LED series connection form, also can be for single led.
Above-mentioned spotlight drive circuit 100, the electric current of the primary coil by power factor correction module 20 control transformers, therefore can obtain higher PF value, plays energy-conservation effect.
Referring to Fig. 2, power factor correction module 20 comprises Power Factor Correction Control chip U1, switching tube Q1, sampling resistor R2,3, loop compensation resistance R 10, zero passage detection resistance R 8, the first divider resistance R6 and the second divider resistance R9.R2 herein, 3 represent that this resistance is formed by two same resistance equivalences in parallel.During actual built-up circuit, because of a variety of causes, for example the possibly components and parts that cannot buy the special parameter of our needs, need with equivalence, to become components and parts by a plurality of components and parts being carried out to connection in series-parallel sometimes.
The current sample pin ISEN of Power Factor Correction Control chip U1 is by sampling resistor R2,3 ground connection, and the output of current sample pin ISEN connecting valve pipe.The lower margin GND ground connection of Power Factor Correction Control chip U1.The loop compensation pin COMP of Power Factor Correction Control chip U1 is by loop compensation resistance R 10 ground connection.The zero passage detection pin ZCS of Power Factor Correction Control chip U1 is by zero passage detection resistance R 8 ground connection, and zero passage detection pin connects winding energy storage filter unit 24 by the second divider resistance R9.The voltage input pin VCC of Power Factor Correction Control chip U1 connects rectification filtering module 10 and winding energy storage filter unit 24.The control end of the driving pin DRV connecting valve pipe Q1 of Power Factor Correction Control chip U1, and drive pin DRV to connect sampling resistor R2, one end of 3 ground connection by the first divider resistance R6.The input of switching tube Q1 connects former limit energy storage filter unit 22.
In the present embodiment, switching tube Q1 is N-channel MOS pipe, the grid that control end is metal-oxide-semiconductor, the drain electrode that input is metal-oxide-semiconductor, the source electrode that output is metal-oxide-semiconductor.The Power Factor Correction Control chip U1 electric current that sampling obtains according to current sample pin ISEN, by driving the break-make of pin DRV control switch pipe Q1, thereby is controlled at the electric current producing on primary coil 222.
In the present embodiment, Power Factor Correction Control chip U1 adopts the chip that model is SY5810, also can adopt in other embodiments other chip that can realize said function.
Former limit energy storage filter unit 22, except primary coil 222, also comprises filter capacitor C4,Yuan limit, former limit resistance R 1 and former limit sustained diode 1.The negative electrode of the anode ，Yuan limit sustained diode 1 of the one former limit of termination sustained diode 1 of primary coil 222 respectively one end of filter capacitor C4He Yuan limit, Yu Yuan limit resistance R 1 connects.The other end of filter capacitor C4He Yuan limit, former limit resistance R 1 all connects the other end of primary coil 222, the input of the anodic bonding switching tube Q1 of He Yuan limit, primary coil 222 one end sustained diode 1.
Secondary energy storage filter unit 32 is except secondary coil 322, also comprise secondary filter capacitor C2, secondary resistance R12 and secondary sustained diode 2, the anode of one terminates secondary sustained diode 2 of secondary coil 322, the negative electrode of secondary sustained diode 2 is connected with secondary resistance R12 one end with secondary filter capacitor C2 respectively, and secondary filter capacitor C2 and the other end of secondary resistance R12 are all connected the other end of secondary coil.Secondary resistance R12(and secondary filter capacitor C2) two ends be respectively the both positive and negative polarity of the output of secondary energy storage filter unit 32, be connected the positive pole that the one end that wherein connects secondary fly-wheel diode negative electrode is output with LED light source.
Winding energy storage filter unit 24, except winding coil 242, also comprises winding filter capacitor C5,6, winding resistance R11 and winding sustained diode 3.The anode of one termination winding sustained diode 3 of winding coil 242, the negative electrode of winding sustained diode 3 passes through winding filter capacitor C5,6 ground connection, the other end ground connection of winding coil 242 after connecting with winding resistance R11.Winding resistance R11 and winding electric capacity C5, the node of 6 connects voltage input pin VCC, and the node between the anode of winding coil 242 and winding sustained diode 3 is connected the second divider resistance R9.
Referring to Fig. 2, in the present embodiment, power factor correction module 20 also comprises the starting resistance being connected between rectification filtering module 10 and voltage input pin VCC, and this starting resistance is composed in series by resistance R 4 and R5.Rectification filtering module 10 connects input pin VCC by this starting resistance.In order to obtain start-up time faster, need to design the resistance of starting resistance.In the present embodiment, the resistance of R4 and R5 is 390 kilohms.
In the present embodiment, power factor correction module 20 also comprises the loop compensation capacitor C 7 being connected between loop compensation pin COMP and loop compensation resistance R 10.For the voltage that makes electrical network input can obtain high PF value variation in the situation that at one in a big way, need to design the value of loop compensation resistance R 10 and building-out capacitor C7.In the present embodiment, the resistance of loop compensation resistance R 10 is 1 kilohm, and the capacitance of building-out capacitor C7 is 1 microfarad.
In the present embodiment, power factor correction module 20 also comprises the current-limiting resistance R7 being connected between driving pin DRV and the control end of switching tube Q1.
Fig. 3 is the structural representation of transformer in another embodiment.In order to obtain good effect, to the special technique for coiling of transformer adopting:
1. since 3 pin, suitable around 96TS with one, Φ 0.13 line, take-up, to 2 pin, adds 2 layers of adhesive tape.
2. since 1 pin, suitable around one deck (screen) with one, Φ 0.19 line, add 2 layers of adhesive tape.
3.A line is since 8 Jiao Caowei tops, and suitable around 18TS with one, the line of Φ 0.3TEX-E, take-up is B line to 7 Jiao Caowei tops, adds 2 layers of adhesive tape.Fly line A is long is 40mm, and B line length is 30mm.
4. since 2 pin, one, Φ 0.13 line is suitable around 44TS, and take-up, to 4 pin, adds 2 layers of adhesive tape.
5. since 5 pin, close around 18TS with 1, Φ 0.19 line, take-up, to 1 pin, adds three layers of adhesive tape.
Can also at the outermost layer of transformer, add two-layer adhesive tape and transformer contour, and add cover Teflon sleeve pipe.
Like this after debugging and test, spotlight drive circuit can be realized high PF value (PF>0.9), low harmonic wave (always harmonic wave<20%) thereby greatly improve the utilance of national grid, also greatly reduces the harmonic wave of electrical network.LED power acquisition sees the following form by the test data in LED when series connection of 3 rated power 1W:
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a spotlight drive circuit, is characterized in that, comprises rectification filtering module, power factor correction module ,Yuan limit energy storage filter unit, secondary energy storage filter unit and winding energy storage filter unit; Described former limit energy storage filter unit comprises primary coil, and described secondary energy storage filter unit comprises secondary coil, and described winding energy storage filter unit comprises winding coil, and described primary coil, secondary coil and winding coil form transformer; Described rectification filtering module connects former limit energy storage filter unit and power factor correction module, described power factor correction module connects described former limit energy storage filter unit and winding energy storage filter unit, and the output of described secondary energy storage filter unit is used for connecting LED light source;
Described rectification filtering module carries out the electric energy of input to export direct current to described power factor correction module after rectifying and wave-filtering, described power factor correction module is exported to described primary coil by the electric current carrying out after power factor correction, described secondary coil produces induced voltage and exports to described LED light source, and described winding coil also produces induced voltage to maintain the input voltage of described power factor correction module.
2. spotlight drive circuit according to claim 1, it is characterized in that, described power factor correction module comprises Power Factor Correction Control chip, switching tube, loop compensation electric capacity, loop compensation resistance, sampling resistor, zero passage detection resistance, the first divider resistance and the second divider resistance;
The current sample pin of described Power Factor Correction Control chip is by described sampling resistor ground connection, and described current sample pin connects the output of described switching tube;
The lower margin ground connection of described Power Factor Correction Control chip;
The loop compensation pin of described Power Factor Correction Control chip is by described loop compensation electric capacity and the loop compensation grounding through resistance of series connection;
The zero passage detection pin of described Power Factor Correction Control chip is by described zero passage detection grounding through resistance, and described zero passage detection pin connects described winding energy storage filter unit by described the second divider resistance;
The voltage input pin of described Power Factor Correction Control chip connects described rectification filtering module and winding energy storage filter unit;
The driving pin of described Power Factor Correction Control chip connects the control end of described switching tube, and described driving pin connects one end of described sampling resistor ground connection by described the first divider resistance; The input of described switching tube connects described former limit energy storage filter unit.
3. spotlight drive circuit according to claim 2, it is characterized in that, described former limit energy storage filter unit also comprises former limit filter capacitor ,Yuan limit resistance and former limit fly-wheel diode, the anode of the one former limit of termination fly-wheel diode of described primary coil, the negative electrode of described former limit fly-wheel diode respectively one end of filter capacitor He Yuan limit, Yu Yuan limit resistance connects, and the other end of filter capacitor He Yuan limit, described former limit resistance all connects the other end of primary coil; The input of described switching tube is the anode that connects He Yuan limit, one end fly-wheel diode of described primary coil.
4. spotlight drive circuit according to claim 2, it is characterized in that, described secondary energy storage filter unit also comprises secondary filter capacitor, secondary resistance and secondary fly-wheel diode, the anode of one terminates secondary fly-wheel diode of described secondary coil, the negative electrode of described secondary fly-wheel diode is connected with one end of secondary filter capacitor and secondary resistance respectively, and the other end of described secondary filter capacitor and secondary resistance is all connected the other end of secondary coil.
5. spotlight drive circuit according to claim 2, it is characterized in that, described winding energy storage filter unit also comprises winding filter capacitor, winding resistance and winding fly-wheel diode, the anode of one termination winding fly-wheel diode of described winding coil, the negative electrode of described winding fly-wheel diode passes through described winding filter capacitor ground connection, the other end ground connection of described winding coil after connecting with winding resistance; Described voltage input pin is the node connecting between winding resistance and winding electric capacity, and described the second divider resistance is the node connecting between described winding coil and the anode of winding fly-wheel diode.
6. spotlight drive circuit according to claim 2, it is characterized in that, described power factor correction module also comprises the starting resistance being connected between described rectification filtering module and voltage input pin, and described voltage input pin is to connect rectification filtering module by described starting resistance.
7. spotlight drive circuit according to claim 2, is characterized in that, described power factor correction module also comprises the current-limiting resistance being connected between described driving pin and the control end of switching tube.
8. spotlight drive circuit according to claim 2, is characterized in that, described switching tube is N-channel MOS pipe, and described control end is grid, and described input is drain electrode, and described output is source electrode.
9. according to the spotlight drive circuit described in any one in claim 1-8, it is characterized in that, described spotlight drive circuit is laid on the printed circuit board (PCB) of dual panel type, and the components and parts of described spotlight drive circuit are surface mount device.
10. a shot-light, comprises LED light source and for driving the spotlight drive circuit of described LED light source work, it is characterized in that, described spotlight drive circuit is according to the spotlight drive circuit described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210199049.5A CN103517484B (en) | 2012-06-15 | 2012-06-15 | Spotlight drive circuit and shot-light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210199049.5A CN103517484B (en) | 2012-06-15 | 2012-06-15 | Spotlight drive circuit and shot-light |
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| Publication Number | Publication Date |
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| CN103517484A true CN103517484A (en) | 2014-01-15 |
| CN103517484B CN103517484B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210199049.5A Expired - Fee Related CN103517484B (en) | 2012-06-15 | 2012-06-15 | Spotlight drive circuit and shot-light |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108207053A (en) * | 2016-12-16 | 2018-06-26 | 施耐德电气工业公司 | driving circuit |
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| JP2010045913A (en) * | 2008-08-12 | 2010-02-25 | Rohm Co Ltd | Drive device |
| US20110025225A1 (en) * | 2009-07-31 | 2011-02-03 | Sanyo Electric Co., Ltd. | Light-Emitting Diode Driver Circuit and Lighting Apparatus |
| CN102014559A (en) * | 2010-11-19 | 2011-04-13 | 宁波龙源照明电器有限公司 | Light-emitting diode light source driving power supply |
| CN202005042U (en) * | 2011-04-07 | 2011-10-05 | 昂宝电子（上海）有限公司 | Novel light-emitting diode (LED) drive circuit with high power factor |
| CN202103886U (en) * | 2011-02-17 | 2012-01-04 | 昂宝电子（上海）有限公司 | LED driver circuit |
-
2012
- 2012-06-15 CN CN201210199049.5A patent/CN103517484B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010045913A (en) * | 2008-08-12 | 2010-02-25 | Rohm Co Ltd | Drive device |
| US20110025225A1 (en) * | 2009-07-31 | 2011-02-03 | Sanyo Electric Co., Ltd. | Light-Emitting Diode Driver Circuit and Lighting Apparatus |
| CN102014559A (en) * | 2010-11-19 | 2011-04-13 | 宁波龙源照明电器有限公司 | Light-emitting diode light source driving power supply |
| CN202103886U (en) * | 2011-02-17 | 2012-01-04 | 昂宝电子（上海）有限公司 | LED driver circuit |
| CN202005042U (en) * | 2011-04-07 | 2011-10-05 | 昂宝电子（上海）有限公司 | Novel light-emitting diode (LED) drive circuit with high power factor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108207053A (en) * | 2016-12-16 | 2018-06-26 | 施耐德电气工业公司 | driving circuit |
| CN108207053B (en) * | 2016-12-16 | 2019-11-26 | 施耐德电气工业公司 | Driving circuit |
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| Publication number | Publication date |
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| CN103517484B (en) | 2016-04-20 |
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Granted publication date: 20160420 Termination date: 20180615 |