CN107787085A - 0 10V of one kind light modulation isolation LED power circuits - Google Patents
0 10V of one kind light modulation isolation LED power circuits Download PDFInfo
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- CN107787085A CN107787085A CN201710970664.4A CN201710970664A CN107787085A CN 107787085 A CN107787085 A CN 107787085A CN 201710970664 A CN201710970664 A CN 201710970664A CN 107787085 A CN107787085 A CN 107787085A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
0 10V of one kind light modulation isolation LED power circuits, including：Modular converter, dimming control unit, photoelectrical coupler, isolation power supply unit and power module；The modular converter is connected with 0 10V dim signal inputs, and 0 10V dim signals are converted into pwm signal；Signal transmission is carried out by photoelectrical coupler between the modular converter and dimming control unit, photoelectrical coupler transmits pwm signal isolation to dimming control unit；The power module is isolation power supply unit and dimming control unit power supply, and the input of power module is electrically connected with city, and output end is connected with LED load.0 10V dim signals are first converted to pwm signal by the present invention, pwm signal is transmitted to dimming control unit by photoisolator, realize the control to dimming control unit, and individually powered by isolating power supply unit to modular converter, realize dual resisteance, ensure the completely isolated of dimming interface, be advantageous to the stability and reliability of light adjusting circuit.
Description
Technical field
The present invention relates to light to adjust field, more particularly to a kind of 0-10V light modulations isolation LED power circuit.
Background technology
Existing LED light fixtures adjustable light power supply is most of using non-isolated drive circuit design extensively,
Mainly the dim signal of drive circuit input is examined using the light modulation driving chip with detection dim signal function
Survey, and then produce corresponding drive signal, so that output voltage or the angle of flow of the output current with controllable silicon dimmer
Change and change, the output of drive circuit increases as controllable silicon dimmer output voltage increases, and vice versa.It is this non-
Isolated power supply dimming arrangement, its design is unreasonable, and security is poor, and operating efficiency is relatively low, it is impossible to well adapts to LED lamps
Have the needs to form a complete production network.
China Patent Publication No. CN 201320151037.5, publication date September in 2013 11 days, innovation and creation it is entitled
A kind of high efficiency PWM dimming LED (Light Emitting Diode) drive circuits, this application case disclose a kind of high efficiency PWM dimming LED (Light Emitting Diode)s driving electricity
Road, including power input VIN, LED control circuit, PWM controllers and LED electrical appliance groups.LED control circuit includes driving
Dynamic chip and inductance L1, driving chip include feeder ear VIN, power switch end LX, feedback input end FB, Enable Pin EN
With earth terminal GND, LED electrical appliances group includes the series LED electrical appliance of integer value number in 2 to 10.Power input
End VIN electrically connects with feeder ear VIN packaging pins, and feeder ear VIN packaging pins pass through more than 2 gold threads and feeder ear
VIN is electrically connected, and PWM controllers send width-modulation pulse to Enable Pin EN.Its weak point is that dim signal is not entered
Row is effectively isolated, and is unfavorable for the stability and reliability of light adjusting circuit.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of 0-10V to dim isolation LED power electricity
Road.
The technical solution adopted for the present invention to solve the technical problems is：A kind of 0-10V light modulations isolation LED power circuit,
Including：Modular converter, dimming control unit, photoelectrical coupler, isolation power supply unit and power module；The modular converter with
0-10V dim signals input is connected, and 0-10V dim signals are converted into pwm signal；The modular converter and brightness adjustment control list
Signal transmission is carried out by photoelectrical coupler between member, photoelectrical coupler transmits pwm signal isolation to dimming control unit；Institute
State isolation power supply unit to be connected with modular converter, powered for modular converter；The power module is isolation power supply unit and light modulation
Control unit is powered, and the input of power module is electrically connected with city, and output end is connected with LED load.
Preferably, the isolation power supply unit includes, diode DS71, resistance RS71, electric capacity C71 and transformer supply
Electric winding；The diode DS71 positive poles are connected with the first end of transformer-supplied winding secondary coil, diode DS71 negative poles
It is connected with electric capacity C71 first ends and is connected with modular converter, the of the ends of electric capacity C71 second and transformer-supplied winding secondary coil
Two ends, the connection of the input of 0-10V dim signals second, resistance RS71 are attempted by electric capacity C71 both ends；The transformer-supplied around
The output of group secondary coil exports DC voltage, for modular converter power supply, institute through diode DS71 rectifications after electric capacity C71 filtering
Transformer-supplied winding primary coil is stated to be connected with dimming control unit.
Preferably, the modular converter includes, chip US71, resistance RS73-RS74, electric capacity CS71-CS73；The core
Piece US71 model BP5001；Chip US71 1 pin is connected with the diode DS71 negative poles；
Chip US71 4 pin are connected with 0-10V dim signals first input end, electric capacity CS73 first ends, the ends of electric capacity CS73 second
With the input of 0-10V dim signals second, chip US71 2 pin, electric capacity CS72 first ends, electric capacity CS71 first ends and resistance
R73 first ends connect；The ends of resistance R73 second and chip US71 8 pin, resistance R74 first ends are connected, the ends of resistance R74 second with
Chip US71 7 pin connection, the ends of electric capacity CS71 second are connected with chip US71 6 pin；The ends of electric capacity CS72 second and chip US71
3 pin, the connection of photoelectrical coupler first input end, chip US71 5 pin are inputted by resistance RS72 and photoelectrical coupler second
End connection.
Preferably, the dimming control unit includes, chip US31, resistance RS31-RS37, resistance RS61-RS64, electricity
Hinder RS41A-RS41D electric capacity C31, electric capacity C61, electric capacity CS31-CS33, electric capacity CS43, electric capacity CS61, voltage-regulator diode ZS61,
Inductance L41-L42, metal-oxide-semiconductor Q41, triode QS61, diode DS31- DS32；The model BP3378 cores of the chip US31
Piece；8 pin of the chip US31 are connected with the output end of photoelectrical coupler first, resistance RS62 first ends, photoelectrical coupler second
Output head grounding, the ends of resistance RS62 second and chip US31 6 pin, resistance RS63 first ends, electric capacity C61 first ends and three poles
Pipe QS61 emitter stages connect and pass through resistance RS61 output bars dimming control signal to power module；Triode QS61 colelctor electrodes with
Diode DS31 negative pole, resistance RS64 first ends, the connection of electric capacity CS61 first ends, the ends of resistance RS64 second and triode QS61
Base stage, the connection of voltage-regulator diode ZS61 negative poles, voltage-regulator diode ZS61 positive poles and the ends of resistance RS64 second, electric capacity CS61 second
End, the ends of electric capacity CS61 second, the second end of transformer-supplied winding primary coil connect and are grounded；Diode DS31 positive pole leads to
Cross resistance RS37 and transformer-supplied winding primary coil first end, resistance RS31 first ends are connected；The ends of resistance RS31 second
2 pin, resistance RS32 first ends and electric capacity CS32 first ends with chip US31 are connected, the ends of resistance RS32 second and electric capacity CS32
Second end connects and is grounded；Chip US31 1 pin is grounded by electric capacity CS31；Chip US31 7 pin are grounded by electric capacity CS33；
Chip US31 4 pin ground connection；Chip US31 5 pin are connected with resistance RS33 first ends, the ends of resistance RS33 second and resistance RS34
First end, metal-oxide-semiconductor Q41 source electrode connect and pass through resistance RS41A-RS41D, electric capacity C31 and be grounded；Chip US31 5 pin
It is connected with resistance RS36 first ends, the ends of resistance RS36 second are connected with resistance RS35 first ends, diode DS32 negative poles, resistance
The ends of RS35 second are connected with diode DS32 positive poles, metal-oxide-semiconductor Q41 grid, and metal-oxide-semiconductor Q41 drain electrode passes through inductance L41 and inductance
L42 is connected with power module.
The substantial effect of the present invention：0-10V dim signals are first converted to pwm signal by the present invention, pass through Phototube Coupling
Device transmits pwm signal to dimming control unit, realizes the control to dimming control unit, and independent by isolating power supply unit
To modular converter power, realize dual resisteance, ensure the completely isolated of dimming interface, be advantageous to light adjusting circuit stability and can
By property, isolation light modulation is realized, and there is the characteristics of compatibility is high.
Brief description of the drawings
Fig. 1 is a kind of structured flowchart of the present invention；
Fig. 2 is the circuit diagram of the present invention.
In figure：1st, modular converter, 2, photoelectrical coupler, 3, dimming control unit, 4, isolation power supply unit, 5, power supply mould
Block.
Embodiment
Below by specific embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
A kind of 0-10V light modulations isolation LED power circuit, as shown in figure 1, including：Modular converter 1, dimming control unit 3,
Photoelectrical coupler 2, isolation power supply unit 4 and power module 5.
Modular converter 1 is connected with 0-10V dim signal inputs, and 0-10V dim signals are converted into pwm signal.Such as Fig. 2
Shown, modular converter 1 includes chip US71, resistance RS73-RS74, electric capacity CS71-CS73；The model of the chip US71
BP5001；Chip US71 1 pin is connected with the diode DS71 negative poles；Chip US71 4 pin and 0-10V dim signals first
Input, the connection of electric capacity CS73 first ends, the ends of electric capacity CS73 second and the input of 0-10V dim signals second, the 2 of chip US71
Pin, electric capacity CS72 first ends, electric capacity CS71 first ends and the connection of resistance R73 first ends；The ends of resistance R73 second and chip US71
8 pin, the connection of resistance R74 first ends, the ends of resistance R74 second are connected with chip US71 7 pin, the ends of electric capacity CS71 second and chip
US71 6 pin connection；The ends of electric capacity CS72 second are connected with chip US71 3 pin, the first input end of photoelectrical coupler 2, chip
US71 5 pin are connected by resistance RS72 with the input of photoelectrical coupler 2 second.
Signal transmission is carried out by photoelectrical coupler 2 between modular converter 1 and dimming control unit 3, photoelectrical coupler 2 will
Pwm signal isolation is transmitted to dimming control unit 3.Dimming control unit 3 includes chip US31, resistance RS31-RS37, resistance
RS61-RS64, resistance RS41A-RS41D electric capacity C31, electric capacity C61, electric capacity CS31-CS33, electric capacity CS43, electric capacity CS61, voltage stabilizing
Diode ZS61, inductance L41-L42, metal-oxide-semiconductor Q41, triode QS61, diode DS31- DS32；The type of the chip US31
Number it is BP3378 chips；8 pin of the chip US31 are connected with the output end of photoelectrical coupler 2 first, resistance RS62 first ends, light
The output head grounding of electric coupler 2 second, the ends of resistance RS62 second and chip US31 6 pin, resistance RS63 first ends, electric capacity C61
First end and triode QS61 emitter stages connect and pass through resistance RS61 output bars dimming control signal to power module 5；Three
Pole pipe QS61 colelctor electrodes and diode DS31 negative pole, resistance RS64 first ends, electric capacity CS61 first ends are connected, resistance RS64
Two ends are connected with triode QS61 base stages, voltage-regulator diode ZS61 negative poles, voltage-regulator diode ZS61 positive poles and resistance RS64 second
End, the ends of electric capacity CS61 second, the ends of electric capacity CS61 second, the second end of transformer-supplied winding primary coil connect and are grounded；Two
Pole pipe DS31 positive pole is connected by the first end of resistance RS37 and transformer-supplied winding primary coil, resistance RS31 first ends
Connect；The ends of resistance RS31 second are connected with chip US31 2 pin, resistance RS32 first ends and electric capacity CS32 first ends, resistance
The ends of RS32 second are connected and are grounded with the ends of electric capacity CS32 second；Chip US31 1 pin is grounded by electric capacity CS31；Chip US31's
7 pin are grounded by electric capacity CS33；Chip US31 4 pin ground connection；Chip US31 5 pin are connected with resistance RS33 first ends, resistance
The ends of RS33 second are connected with the source electrode of resistance RS34 first ends, metal-oxide-semiconductor Q41 and by resistance RS41A-RS41D, electric capacity
C31 is grounded；Chip US31 5 pin are connected with resistance RS36 first ends, the ends of resistance RS36 second and resistance RS35 first ends, two poles
Pipe DS32 negative poles are connected, and the ends of resistance RS35 second are connected with diode DS32 positive poles, metal-oxide-semiconductor Q41 grid, metal-oxide-semiconductor Q41 leakage
Pole is connected by inductance L41 and inductance L42 with power module 5.
Isolation power supply unit is connected with modular converter, is powered for modular converter；Power module 5 is the isolation He of power supply unit 4
Dimming control unit 3 is powered, and the input of power module 5 is electrically connected with city, and output end is connected with LED load.Isolation power supply is single
Member 4 includes, diode DS71, resistance RS71, electric capacity C71 and transformer-supplied winding.Diode DS71 positive poles and transformer
The first end connection of power supply winding secondary coil, diode DS71 negative poles are connected with electric capacity C71 first ends and connected with modular converter 1
Connecing, the second end of the ends of electric capacity C71 second and transformer-supplied winding secondary coil, the input of 0-10V dim signals second are connected,
Resistance RS71 is attempted by electric capacity C71 both ends.Power module 5 belongs to normal power supplies circuit, and civil power is carried out into rectifying and wave-filtering, carries out
LED is controlled to light after ac-dc conversion, power module 5 includes transformer, and transformer is divided into inverse-excitation type linemen's around doing
Make winding and power supply winding, after the driving voltage of inverse-excitation type line work winding primary coil is turned off, secondary coil is to load
Power output is provided, power supply winding is powered for isolation power supply unit 4 and dimming control unit 3.Power winding primary coil with
Isolate the power end connection of the control chip of power supply unit 4, it is whole through diode DS71 for its power supply, the secondary coil for winding of powering
Stream, DC voltage is exported after electric capacity C71 filtering, is powered for modular converter 1.
Embodiment described above is a kind of preferable scheme of the present invention, not makees any formal limit to the present invention
System, there are other variants and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (4)
- A kind of 1. 0-10V light modulations isolation LED power circuit, it is characterised in that including：Modular converter, dimming control unit, photoelectricity Coupler, isolation power supply unit and power module；The modular converter is connected with 0-10V dim signal inputs, and 0-10V dim signals are converted into pwm signal；Signal transmission is carried out by photoelectrical coupler between the modular converter and dimming control unit, photoelectrical coupler is by PWM Signal-isolated transmission is to dimming control unit；The isolation power supply unit is connected with modular converter, is powered for modular converter；The power module is isolation power supply unit and dimming control unit power supply, and the input of power module electrically connects with city, Output end is connected with LED load.
- A kind of 2. 0-10V light modulations isolation LED power circuit according to claim 1, it is characterised in that the isolation power supply Unit includes, diode DS71, resistance RS71, electric capacity C71 and transformer-supplied winding；The diode DS71 positive poles are with becoming The first end connection of transformer power-supply winding secondary coil, diode DS71 negative poles are connected with electric capacity C71 first ends and and modulus of conversion Block connects, the second end of the ends of electric capacity C71 second and transformer-supplied winding secondary coil, the input of 0-10V dim signals second Connection, resistance RS71 are attempted by electric capacity C71 both ends；The output of the transformer-supplied winding secondary coil is through diode DS71 Rectification, DC voltage is exported after electric capacity C71 filtering, is powered for modular converter, the transformer-supplied winding primary coil is with adjusting Light control unit connects.
- A kind of 3. 0-10V light modulations isolation LED power circuit according to claim 1, it is characterised in that the modular converter Including chip US71, resistance RS73-RS74, electric capacity CS71-CS73；The model BP5001 of the chip US71；Chip US71 1 pin be connected with the diode DS71 negative poles；Chip US71 4 pin are connected with 0-10V dim signals first input end, electric capacity CS73 first ends, the ends of electric capacity CS73 second With the input of 0-10V dim signals second, chip US71 2 pin, electric capacity CS72 first ends, electric capacity CS71 first ends and resistance R73 first ends connect；The ends of resistance R73 second and chip US71 8 pin, resistance R74 first ends are connected, the ends of resistance R74 second with Chip US71 7 pin connection, the ends of electric capacity CS71 second are connected with chip US71 6 pin；The ends of electric capacity CS72 second and chip US71 3 pin, the connection of photoelectrical coupler first input end, chip US71 5 pin are inputted by resistance RS72 and photoelectrical coupler second End connection.
- A kind of 4. 0-10V light modulations isolation LED power circuit according to claim 3, it is characterised in that the brightness adjustment control Unit includes, chip US31, resistance RS31-RS37, resistance RS61-RS64, resistance RS41A-RS41D electric capacity C31, electric capacity C61, Electric capacity CS31-CS33, electric capacity CS43, electric capacity CS61, voltage-regulator diode ZS61, inductance L41-L42, metal-oxide-semiconductor Q41, triode QS61, diode DS31- DS32；The model BP3378 chips of the chip US31；8 pin of the chip US31 are connected with the output end of photoelectrical coupler first, resistance RS62 first ends, photoelectrical coupler second Output head grounding, the ends of resistance RS62 second and chip US31 6 pin, resistance RS63 first ends, electric capacity C61 first ends and three poles Pipe QS61 emitter stages connect and pass through resistance RS61 output bars dimming control signal to power module；Triode QS61 colelctor electrodes with Diode DS31 negative pole, resistance RS64 first ends, the connection of electric capacity CS61 first ends, the ends of resistance RS64 second and triode QS61 Base stage, the connection of voltage-regulator diode ZS61 negative poles, voltage-regulator diode ZS61 positive poles and the ends of resistance RS64 second, electric capacity CS61 second End, the ends of electric capacity CS61 second, the second end of transformer-supplied winding primary coil connect and are grounded；Diode DS31 positive pole passes through the first end of resistance RS37 and transformer-supplied winding primary coil, resistance RS31 first End connection；The ends of resistance RS31 second are connected with chip US31 2 pin, resistance RS32 first ends and electric capacity CS32 first ends, electricity The resistance ends of RS32 second are connected and are grounded with the ends of electric capacity CS32 second；Chip US31 1 pin is grounded by electric capacity CS31；Chip US31 7 pin be grounded by electric capacity CS33；Chip US31 4 pin ground connection；Chip US31 5 pin are connected with resistance RS33 first ends, electricity The resistance ends of RS33 second are connected with the source electrode of resistance RS34 first ends, metal-oxide-semiconductor Q41 and by resistance RS41A-RS41D, electric capacity C31 is grounded；Chip US31 5 pin are connected with resistance RS36 first ends, the ends of resistance RS36 second and resistance RS35 first ends, two poles Pipe DS32 negative poles are connected, and the ends of resistance RS35 second are connected with diode DS32 positive poles, metal-oxide-semiconductor Q41 grid, metal-oxide-semiconductor Q41 leakage Pole is connected by inductance L41 and inductance L42 with power module.
Priority Applications (1)
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| CN201710970664.4A CN107787085A (en) | 2017-10-18 | 2017-10-18 | 0 10V of one kind light modulation isolation LED power circuits |
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|---|---|---|---|
| CN201710970664.4A CN107787085A (en) | 2017-10-18 | 2017-10-18 | 0 10V of one kind light modulation isolation LED power circuits |
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| CN107787085A true CN107787085A (en) | 2018-03-09 |
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| CN201710970664.4A Pending CN107787085A (en) | 2017-10-18 | 2017-10-18 | 0 10V of one kind light modulation isolation LED power circuits |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109757009A (en) * | 2019-03-14 | 2019-05-14 | 深圳市健森实业有限公司 | A kind of high-precision LED light modulation line and input-output line isolation circuit control system |
| CN109922585A (en) * | 2019-04-10 | 2019-06-21 | 宁波市星耀智能科技有限公司 | A kind of lighting control circuit |
| CN111385942A (en) * | 2019-11-12 | 2020-07-07 | 浙江凯耀照明有限责任公司 | LED lamp driving circuit capable of improving PF value |
| CN112203381A (en) * | 2020-09-03 | 2021-01-08 | 杭州士兰微电子股份有限公司 | Dimming control circuit and control method thereof |
| CN112203380A (en) * | 2020-09-03 | 2021-01-08 | 杭州士兰微电子股份有限公司 | Dimming control circuit and control method thereof |
| CN112351549A (en) * | 2020-11-24 | 2021-02-09 | 莱昊(上海)光电科技有限公司 | Device and method for carrying out digital communication with LED lamp through 0-10V dimming interface |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109757009A (en) * | 2019-03-14 | 2019-05-14 | 深圳市健森实业有限公司 | A kind of high-precision LED light modulation line and input-output line isolation circuit control system |
| CN109922585A (en) * | 2019-04-10 | 2019-06-21 | 宁波市星耀智能科技有限公司 | A kind of lighting control circuit |
| CN109922585B (en) * | 2019-04-10 | 2021-12-21 | 宁波市星耀智能科技有限公司 | Light control circuit |
| CN111385942A (en) * | 2019-11-12 | 2020-07-07 | 浙江凯耀照明有限责任公司 | LED lamp driving circuit capable of improving PF value |
| CN111385942B (en) * | 2019-11-12 | 2022-03-11 | 浙江凯耀照明有限责任公司 | LED lamp driving circuit capable of improving PF value |
| CN112203381A (en) * | 2020-09-03 | 2021-01-08 | 杭州士兰微电子股份有限公司 | Dimming control circuit and control method thereof |
| CN112203380A (en) * | 2020-09-03 | 2021-01-08 | 杭州士兰微电子股份有限公司 | Dimming control circuit and control method thereof |
| CN112351549A (en) * | 2020-11-24 | 2021-02-09 | 莱昊(上海)光电科技有限公司 | Device and method for carrying out digital communication with LED lamp through 0-10V dimming interface |
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Application publication date: 20180309 |