CN103517484B - Spotlight drive circuit and shot-light - Google Patents
Spotlight drive circuit and shot-light Download PDFInfo
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- CN103517484B CN103517484B CN201210199049.5A CN201210199049A CN103517484B CN 103517484 B CN103517484 B CN 103517484B CN 201210199049 A CN201210199049 A CN 201210199049A CN 103517484 B CN103517484 B CN 103517484B
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- winding
- power factor
- energy storage
- resistance
- factor correction
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- 238000004804 winding Methods 0.000 claims abstract 27
- 238000004146 energy storage Methods 0.000 claims abstract 22
- 238000001914 filtration Methods 0.000 claims abstract 10
- 239000003990 capacitor Substances 0.000 claims 9
- 238000001514 detection method Methods 0.000 claims 4
- 238000005070 sampling Methods 0.000 claims 3
- 230000009977 dual effect Effects 0.000 claims 1
- 238000004134 energy conservation Methods 0.000 abstract 1
Classifications
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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
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to a kind of spotlight drive circuit, comprise rectification filtering module, power factor correction module, former limit energy storage filter unit, secondary energy storage filter unit and winding energy storage filter unit; Former limit energy storage filter unit comprises primary coil, and secondary energy storage filter unit comprises secondary coil, and winding energy storage filter unit comprises winding coil, three-winding composition transformer; Rectification filtering module exports direct current to power factor correction module after the electric energy of input is carried out rectifying and wave-filtering, electric current after carrying out power factor correction is exported to primary coil by power factor correction module, secondary coil produces induced voltage and exports to LED light source, and winding coil also produces induced voltage with the input voltage of holding power factor correcting module.The invention still further relates to a kind of shot-light.The present invention, by the electric current of the primary coil of power factor correction module control transformer, therefore can obtain higher PF(power factor) value, reach energy-conservation effect.
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, usual PF(power factor) value can only reach about 0.5 ~ 0.6, thus causes the waste of the energy.
Summary of the invention
Based on this, be necessary the spotlight drive circuit for providing a kind of high PF value.
A kind of spotlight drive circuit, comprises rectification filtering module, power factor correction module, former 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, described primary coil, secondary coil and winding coil composition 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 for connecting LED light source; Described rectification filtering module exports direct current to described power factor correction module after the electric energy of input is carried out rectifying and wave-filtering, electric current after carrying out power factor correction is exported to described primary coil by described power factor correction module, 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.
Wherein 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 passes through 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 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 first divider resistance; The input of described switching tube connects described former limit energy storage filter unit.
Wherein in an embodiment, described former limit energy storage filter unit also comprises former limit filter capacitor, former limit resistance and former limit fly-wheel diode, the anode of one termination former limit fly-wheel diode of described primary coil, the negative electrode of described former limit fly-wheel diode is connected with one end of former limit filter capacitor and former limit resistance respectively, and described former limit filter capacitor and the other end of former limit resistance are all connected the other end of primary coil; The input of described switching tube connects one end of described primary coil and the anode of former limit fly-wheel diode.
Wherein 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 described secondary filter capacitor is all connected the other end of secondary coil with the other end of secondary resistance.
Wherein 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 is connected rear by described winding filter capacitor ground connection with winding resistance, the other end ground connection of described winding coil; Described voltage input pin connects the node between winding resistance and winding electric capacity, and described second divider resistance connects the node between described winding coil and the anode of winding fly-wheel diode.
Wherein in an embodiment, described power factor correction module also comprises the starting resistance be connected between described rectification filtering module and voltage input pin, and described voltage input pin connects rectification filtering module by described starting resistance.
Wherein in an embodiment, described power factor correction module also comprises the current-limiting resistance be connected between described driving pin and the control end of switching tube.
Wherein in an embodiment, 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.
Wherein in an embodiment, 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.
There is a need to the shot-light that a kind of high PF value is provided, comprising 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, by the electric current of the primary coil of power factor correction module control transformer, therefore can obtain higher PF value, reach 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 enabling object of the present invention, feature and advantage more become apparent, and are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
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, former 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 multiple LED strip connection is formed, and also can be single led.
Rectification filtering module 10 exports direct current to power factor correction module 20 after the electric energy of input is carried out rectifying and wave-filtering.The electric current flowing through primary coil 222 controlled by power factor correction module 20, secondary coil 322 produces induced voltage and exports to LED light source by the output of secondary energy storage filter unit 32, and winding coil 242 also produces induced voltage with the input voltage of holding power factor correcting module 20.This input voltage is supplied to power factor correction (PFC) control chip of power factor correction module 20 as work energy.
Above-mentioned spotlight drive circuit 100, by the electric current of the primary coil of power factor correction module 20 control transformer, therefore can obtain higher PF value, play energy-conservation effect.
See Fig. 2, power factor correction module 20 comprises Power Factor Correction Control chip U1, switching tube Q1, sampling resistor R2,3, loop compensation resistance R10, zero passage detection resistance R8, the first divider resistance R6 and the second divider resistance R9.R2 herein, 3 represent that these resistance are formed by two same resistance equivalences in parallel.Because a variety of causes during actual built-up circuit, such as, possibly cannot buying the components and parts of the special parameter that we need, sometimes needing to become components and parts by multiple components and parts being carried out connection in series-parallel with equivalence.
The current sample pin ISEN of Power Factor Correction Control chip U1 passes through 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 R10 ground connection.The zero passage detection pin ZCS of Power Factor Correction Control chip U1 is by zero passage detection resistance R8 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 by the first divider resistance R6, one end of 3 ground connection.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, and control end is the grid of metal-oxide-semiconductor, and input is the drain electrode of metal-oxide-semiconductor, and output is the source electrode of metal-oxide-semiconductor.Power Factor Correction Control chip U1 to sample the electric current obtained according to current sample pin ISEN, by driving the break-make of pin DRV control switch pipe Q1, thus controls the electric current that produces on primary coil 222.
In the present embodiment, Power Factor Correction Control chip U1 adopts model to be the chip of SY5810, also can adopt other chip that can realize said function in other embodiments.
Former limit energy storage filter unit 22, except primary coil 222, also comprises former limit filter capacitor C4, former limit resistance R1 and former limit sustained diode 1.The anode of one termination former limit sustained diode 1 of primary coil 222, the negative electrode of former limit sustained diode 1 is connected with one end of former limit filter capacitor C4 and former limit resistance R1 respectively.Former limit filter capacitor C4 is all connected the other end of primary coil 222 with the other end of former limit resistance R1, the input of one end of primary coil 222 and the anode connecting valve pipe Q1 of former limit 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 one end of secondary filter capacitor C2 and secondary resistance R12 respectively, and secondary filter capacitor C2 is all connected the other end of secondary coil with the other end of secondary resistance R12.Secondary resistance R12(and secondary filter capacitor C2) two ends be the both positive and negative polarity of the output of secondary energy storage filter unit 32 respectively, be connected with LED light source, the one end wherein connecing secondary fly-wheel diode negative electrode is the positive pole of output.
Winding energy storage filter unit 24, except winding coil 242, also comprises winding filter capacitor C5, and 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 is connected rear by winding filter capacitor C5 with winding resistance R11,6 ground connection, the other end ground connection of winding coil 242.Winding resistance R11 and winding electric capacity C5, the node between 6 connects voltage input pin VCC, and the node between winding coil 242 and the anode of winding sustained diode 3 is connected the second divider resistance R9.
See Fig. 2, in the present embodiment, power factor correction module 20 also comprises the starting resistance be connected between rectification filtering module 10 and voltage input pin VCC, and this starting resistance is composed in series by resistance R4 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 electric capacity C7 be connected between loop compensation pin COMP and loop compensation resistance R10.The voltage inputted to make electrical network when one in a big way in change can obtain high PF value, need to design the value of loop compensation resistance R10 and building-out capacitor C7.In the present embodiment, the resistance of loop compensation resistance R10 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 to and driving between pin DRV and the control end of switching tube Q1.
Spotlight drive circuit 100 adopts double sided board on the fabric swatch of printed circuit board (pcb), and the components and parts that every one side is arranged are surface mount device (SMD), and to obtain less volume, size only has 27.5*16*16 millimeter.
Fig. 3 is the structural representation of transformer in another embodiment.In order to obtain good effect, special technique for coiling is adopted to transformer:
1., from 3 pin, suitable around 96TS with one, Φ 0.13 line, take-up, to 2 pin, adds 2 layers of adhesive tape.
2., from 1 pin, with one, Φ 0.19 line along around one deck (screen), add 2 layers of adhesive tape.
3.A line is from 8 tops, pin slot, and suitable around 18TS with one, the line of Φ 0.3TEX-E, take-up is B line to 7 tops, pin slot, adds 2 layers of adhesive tape.Fly line A length is 40mm, B line length is 30mm.
4., from 2 pin, one, Φ 0.13 line is suitable around 44TS, and take-up, to 4 pin, adds 2 layers of adhesive tape.
5. from 5 pin, close around 18TS with 1, Φ 0.19 line, take-up, to 1 pin, adds three layers of adhesive tape.
Can also 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 realize high PF value (PF>0.9), low harmony wave (total harmonic wave <20%) thus substantially increase the utilance of national grid, also greatly reduces the harmonic wave of electrical network.Test data when LED power adopts the LED strip of 3 rated power 1W to join sees the following form:
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not 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 (9)
1. a spotlight drive circuit, is characterized in that, comprises rectification filtering module, power factor correction module, former 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, described primary coil, secondary coil and winding coil composition 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 for connecting LED light source;
Described rectification filtering module exports direct current to described power factor correction module after the electric energy of input is carried out rectifying and wave-filtering, electric current after carrying out power factor correction is exported to described primary coil by described power factor correction module, 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;
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 passes through 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 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 first divider resistance; The input of described switching tube connects described former limit energy storage filter unit; The resistance of described loop compensation resistance R10 is 1 kilohm, and the capacitance of described building-out capacitor is 1 microfarad.
2. spotlight drive circuit according to claim 1, it is characterized in that, described former limit energy storage filter unit also comprises former limit filter capacitor, former limit resistance and former limit fly-wheel diode, the anode of one termination former limit fly-wheel diode of described primary coil, the negative electrode of described former limit fly-wheel diode is connected with one end of former limit filter capacitor and former limit resistance respectively, and described former limit filter capacitor and the other end of former limit resistance are all connected the other end of primary coil; The input of described switching tube connects one end of described primary coil and the anode of former limit fly-wheel diode.
3. spotlight drive circuit according to claim 1, 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 described secondary filter capacitor is all connected the other end of secondary coil with the other end of secondary resistance.
4. spotlight drive circuit according to claim 1, 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 is connected rear by described winding filter capacitor ground connection with winding resistance, the other end ground connection of described winding coil; Described voltage input pin connects the node between winding resistance and winding electric capacity, and described second divider resistance connects the node between described winding coil and the anode of winding fly-wheel diode.
5. spotlight drive circuit according to claim 1, it is characterized in that, described power factor correction module also comprises the starting resistance be connected between described rectification filtering module and voltage input pin, and described voltage input pin connects rectification filtering module by described starting resistance.
6. spotlight drive circuit according to claim 1, is characterized in that, described power factor correction module also comprises the current-limiting resistance be connected between described driving pin and the control end of switching tube.
7. spotlight drive circuit according to claim 1, 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.
8. according to the spotlight drive circuit in claim 1-7 described in any one, 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.
9. 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 for according to the spotlight drive circuit in claim 1-8 described in any one.
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 |
|---|---|
| CN103517484A CN103517484A (en) | 2014-01-15 |
| CN103517484B true 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108207053B (en) * | 2016-12-16 | 2019-11-26 | 施耐德电气工业公司 | Driving circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5345810B2 (en) * | 2008-08-12 | 2013-11-20 | ローム株式会社 | Drive device |
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- 2012-06-15 CN CN201210199049.5A patent/CN103517484B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN103517484A (en) | 2014-01-15 |
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