CN103607810A - Control circuit of LED lighting equipment - Google Patents
Control circuit of LED lighting equipment Download PDFInfo
- Publication number
- CN103607810A CN103607810A CN201310530560.3A CN201310530560A CN103607810A CN 103607810 A CN103607810 A CN 103607810A CN 201310530560 A CN201310530560 A CN 201310530560A CN 103607810 A CN103607810 A CN 103607810A
- Authority
- CN
- China
- Prior art keywords
- module
- input
- output
- reference voltage
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to a control circuit of LED lighting equipment. The circuit comprises a rectification filtering module, a control module, a starting suppression module, a constant current output module, a feedback module, a current sampling module, a reference voltage compensation module and a reference voltage generation module. An input terminal of the rectification filtering module is connected with a power supply and an output terminal is connected with an input terminal of the starting suppression module. An output terminal of the control module is connected with a control terminal of the starting suppression module. An output terminal of the starting suppression module is connected with an input terminal of the constant current output module. An output terminal of the constant current output module is connected with the LED lighting equipment, an input terminal of the feedback module and an input terminal of the current sampling module respectively. An output terminal of the feedback module is connected with an input terminal of the reference voltage compensation module. An output terminal of the reference voltage compensation module is connected with an input terminal of the reference voltage generation module. An output terminal of the reference voltage generation module is connected with an input terminal of the control module. An output terminal of the current sampling module is connected with the input terminal of the control module. The control circuit outputs a constant current and circuit stability is good.
Description
Technical field
The present invention relates to LED control technology, be specifically related to a kind of control circuit of LED lighting apparatus.
Background technology
Along with popularizing of urbanization, the contradiction between energy supply and demand is more and more serious, and people urgently find a kind of method of green illumination, alleviates the shortage of the energy.
Light-Emitting Diode (Light Emitting Diode, LED) is a kind of solid-state semiconductor electronic component that can be visible ray by electric energy conversion.The fields such as light-emitting diode (LED) has high brightness demonstration, fast response time, low in energy consumption, the life-span is long, volume is little, light utilization efficiency advantages of higher is widely used in display screen, street lamp, lamps for vehicle, domestic lighting, LED-backlit source.At present, LED has substituted traditional incandescent lamp becomes lighting apparatus of new generation.
Along with the application of LED lighting apparatus and universal, the control of LED lighting apparatus has become a popular research direction.Wherein LED lighting apparatus stable is output as the large difficult point that LED lighting apparatus is controlled.
At present, LED lighting apparatus adopts constant current chip driving LED lighting apparatus conventionally, in order to reduce power consumption, the LED lighting apparatus energy-saving control method generally adopting is: the opening and closing according to setting lighting hours section control LED lighting apparatus, reach the object that reduces power consumption.Although this method has reduced power consumption to a certain extent, but the control of LED lamp is only had to opening and closing two states, when extraneous ambient brightness is higher, open LED lighting apparatus, and allow LED lighting apparatus will cause certain energy waste in high brightness state.For the problems referred to above, researcher proposes a kind of method that adopts pwm circuit driving LED lighting apparatus, and the illumination that realizes LED lighting apparatus is adjustable, further reduces the waste of energy, reaches the object of low power consuming.
But LED lighting apparatus often occurs occurring flicker because electric power outputting current is unstable at present, brightness is unstable, thereby affects the problem of illuminating effect.
Summary of the invention
The object of the invention is to overcome shortcomings and deficiencies of the prior art, a kind of control circuit of LED lighting apparatus is provided, for LED lighting apparatus provides constant current.
Object of the present invention is achieved through the following technical solutions: a kind of control circuit of LED lighting apparatus, comprise: rectification filtering module, control module, start and suppress module, constant current output module, feedback module, current sample module, reference voltage compensation module and reference voltage generation module, the input termination power of rectification filtering module wherein, output termination starts the input that module suppresses module, the output termination of control module starts the control end that suppresses module, start the input of the output termination constant current output module that suppresses module, the output of constant current output module connects respectively LED lighting apparatus, the input of feedback module, the input of current sample module, the input of the output termination reference voltage compensation module of feedback module, the input of the output termination reference voltage generation module of reference voltage compensation module, the input of the output termination control module of reference voltage generation module, the output termination control module input of current sample module.Described rectification filtering module is direct current by the AC rectification of power supply output, described reference voltage generation module is for generation of reference voltage, control module, for the sampled voltage of sample rate current module and reference voltage are compared, and to starting, suppressing module output control signal according to comparative result, reference voltage compensation module produces the bucking voltage that reference voltage is compensated according to the feedback signal of feedback module.By reference voltage is compensated, change the duty ratio of the control signal of control module output, control thus the size of output current, guarantee that the electric current that flows through LED lighting apparatus keeps constant.In addition, by constant current output module, further guarantee that control circuit realizes constant current output.
As preferably, described control module comprises pwm control circuit and comparator, described than machine for sampled voltage and reference voltage are compared; Pwm control circuit, is connected to the output of described comparator, for generating the pulse-width signal as control signal according to comparative result.
As preferably, described control circuit also comprises overcurrent protection module, the input termination power of described overcurrent protection module, and the input of output termination control module, when the electric current of power supply input is bigger than normal, control circuit quits work, and realizes overcurrent protection.
As preferably, the described power supply EMI that connects suppresses to connect after module the input of rectification filtering module, improves the anti-electromagnetic interference capability of control circuit, guarantees the stability of control circuit.
As preferably, described rectification filtering module output is connected and is connect and start the input that suppresses module after a power factor correction module, reduces circuit loss, improves the power factor of control circuit.
The present invention comprises following advantage and beneficial effect compared to existing technology:
(1) the present invention compares the sampled voltage of sample rate current module and reference voltage by control module, and to starting, suppress module output control signal according to comparative result, control module is adjusted according to the variation of output voltage, control the stable of output current, and the bucking voltage according to the feedback signal generation of feedback module, reference voltage being compensated by reference voltage compensation module, change the duty ratio of the control signal of control module output, control thus the size of output current, further guarantee the stability of output current, further improve the constant current accuracy of control circuit.
(2) by constant current output module, realize constant current output, by control module, according to the variation of output voltage, adjust, further guarantee that the electric current that flows through LED lighting apparatus keeps constant, further improves the constant current accuracy of control circuit.
(3) logical overcurrent protection module detects the electric current of voltage input, and when the electric current of power supply input is bigger than normal, control circuit quits work, and realizes overcurrent protection, and control circuit is safe.
(4) by EMI, suppress module control circuit is carried out to anti-electromagnetic interference, improve the anti-electromagnetic interference capability of control circuit, guarantee the stability of control circuit.
(5) by power factor correction module, reduce circuit loss, improve the power factor of control circuit.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the control circuit of LED lighting apparatus in embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, a kind of control circuit of LED lighting apparatus, comprise: overcurrent protection module, EMI suppresses module, rectification filtering module, power factor correction module, control module, start and suppress module, constant current output module, feedback module, current sample module, reference voltage compensation module and reference voltage generation module, described EMI suppresses the input termination power of module, the input of output termination rectification filtering module, the output of the input termination rectification filtering module of power factor correction module, output termination starts the input that module suppresses module, the output termination of control module starts the control end that suppresses module, start the input of the output termination constant current output module that suppresses module, the output of constant current output module connects respectively LED lighting apparatus, the input of feedback module, the input of current sample module, the input of the output termination reference voltage compensation module of feedback module, the input of the output termination reference voltage generation module of reference voltage compensation module, the input of the output termination control module of reference voltage generation module, the input of the output termination control module of current sample module, the input termination power of overcurrent protection module, the input of output termination control module.
Described rectification filtering module is direct current by the AC rectification of power supply output, described reference voltage generation module is for generation of reference voltage, control module, for the sampled voltage of sample rate current module and reference voltage are compared, and to starting, suppressing module output control signal according to comparative result, reference voltage compensation module produces the bucking voltage that reference voltage is compensated according to the feedback signal of feedback module.By reference voltage is compensated, change the duty ratio of the control signal of control module output, control thus the size of output current, in addition, by constant current output module, realize constant current output.
Described control module comprises pwm control circuit and comparator, described than machine for sampled voltage and reference voltage are compared; Pwm control circuit, is connected to the output of described comparator, for generating the pulse-width signal as control signal according to comparative result.
Overcurrent protection module detects the electric current of voltage input, and when the electric current of power supply input is bigger than normal, control circuit quits work, and realizes overcurrent protection, and control circuit is safe.EMI suppresses module control circuit is carried out to anti-electromagnetic interference, improves the anti-electromagnetic interference capability of control circuit, guarantees the stability of control circuit.Power factor correction module reduces circuit loss, improves the power factor of control circuit.
Above-described embodiment is preferably execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (5)
1. the control circuit of a LED lighting apparatus, it is characterized in that, comprise: rectification filtering module, control module, start and suppress module, constant current output module, feedback module, current sample module, reference voltage compensation module and reference voltage generation module, the input termination power of rectification filtering module wherein, output termination starts the input that module suppresses module, the output termination of control module starts the control end that suppresses module, start the input of the output termination constant current output module that suppresses module, the output of constant current output module connects respectively LED lighting apparatus, the input of feedback module, the input of current sample module, the input of the output termination reference voltage compensation module of feedback module, the input of the output termination reference voltage generation module of reference voltage compensation module, the input of the output termination control module of reference voltage generation module, the output termination control module input of current sample module.
2. the control circuit of LED lighting apparatus according to claim 1, is characterized in that: described control module comprises pwm control circuit and comparator, described than machine for sampled voltage and reference voltage are compared; Pwm control circuit, is connected to the output of described comparator, for generating the pulse-width signal as control signal according to comparative result.
3. the control circuit of LED lighting apparatus according to claim 1, is characterized in that: described control circuit also comprises overcurrent protection module, the input termination power of described overcurrent protection module, the input of output termination control module.
4. the control circuit of LED lighting apparatus according to claim 1, is characterized in that: the described power supply EMI that connects suppresses to connect after module the input of rectification filtering module.
5. according to the control circuit of the LED lighting apparatus described in claim 1 to 4 any one, it is characterized in that: described rectification filtering module output is connected and connect and start the input that suppresses module after a power factor correction module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530560.3A CN103607810A (en) | 2013-10-31 | 2013-10-31 | Control circuit of LED lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530560.3A CN103607810A (en) | 2013-10-31 | 2013-10-31 | Control circuit of LED lighting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103607810A true CN103607810A (en) | 2014-02-26 |
Family
ID=50125995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310530560.3A Pending CN103607810A (en) | 2013-10-31 | 2013-10-31 | Control circuit of LED lighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103607810A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540296A (en) * | 2015-01-08 | 2015-04-22 | 福建思科通电子科技有限公司 | Compatible LED intelligent fluorescent lamp tube and control method thereof |
| CN104994643A (en) * | 2015-07-03 | 2015-10-21 | 深圳市通普科技有限公司 | Intelligent led driving power supply |
| CN107071982A (en) * | 2017-05-19 | 2017-08-18 | 深圳市晟碟半导体有限公司 | LED drive device and its invariable power light adjusting circuit, light-dimming method |
| CN107357346A (en) * | 2017-08-24 | 2017-11-17 | 上海乾丰新能源科技有限公司 | A kind of program control program control constant-current supply of compensation of signal lamp |
| CN107820347A (en) * | 2017-11-30 | 2018-03-20 | 欧普照明股份有限公司 | A kind of driving power and lighting device |
| CN108966416A (en) * | 2018-07-11 | 2018-12-07 | 昆山仕优威电子科技有限公司 | A kind of control system of UV LED light source |
| CN109462920A (en) * | 2017-09-06 | 2019-03-12 | 深圳市海洋王照明工程有限公司 | A kind of lighting apparatus and its control circuit |
| CN109640437A (en) * | 2018-12-07 | 2019-04-16 | 苏州纽克斯电源技术股份有限公司 | A kind of LED dimming control system |
| CN110177410A (en) * | 2019-05-24 | 2019-08-27 | 深圳市晟碟半导体有限公司 | A kind of LED light adjusting circuit, dimming device and light-dimming method |
| CN111629490A (en) * | 2020-07-07 | 2020-09-04 | 中科慧远视觉技术（洛阳）有限公司 | Current-adjustable and PWM (pulse-width modulation) strobe frequency controlled constant-current driving circuit and control method |
| CN111917304A (en) * | 2020-08-10 | 2020-11-10 | 北京新雷能科技股份有限公司 | Digital power supply |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201563268U (en) * | 2009-11-04 | 2010-08-25 | 河源市超越光电科技有限公司 | Drive circuit for OLED lamp |
| WO2013053532A1 (en) * | 2011-10-14 | 2013-04-18 | Osram Gmbh | An led control circuit and a controlling method of the same |
| CN103066851A (en) * | 2012-12-20 | 2013-04-24 | 西安电子科技大学 | Control circuit for primary side flyback type converter |
| CN103155714A (en) * | 2012-03-19 | 2013-06-12 | 叶军 | Led driving chip and circuit with power compensation |
-
2013
- 2013-10-31 CN CN201310530560.3A patent/CN103607810A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201563268U (en) * | 2009-11-04 | 2010-08-25 | 河源市超越光电科技有限公司 | Drive circuit for OLED lamp |
| WO2013053532A1 (en) * | 2011-10-14 | 2013-04-18 | Osram Gmbh | An led control circuit and a controlling method of the same |
| CN103155714A (en) * | 2012-03-19 | 2013-06-12 | 叶军 | Led driving chip and circuit with power compensation |
| CN103066851A (en) * | 2012-12-20 | 2013-04-24 | 西安电子科技大学 | Control circuit for primary side flyback type converter |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540296A (en) * | 2015-01-08 | 2015-04-22 | 福建思科通电子科技有限公司 | Compatible LED intelligent fluorescent lamp tube and control method thereof |
| CN104994643A (en) * | 2015-07-03 | 2015-10-21 | 深圳市通普科技有限公司 | Intelligent led driving power supply |
| US10721799B2 (en) | 2017-05-19 | 2020-07-21 | Shenzhen Sendis Semiconductor Co., Ltd. | LED driving device, constant-power dimming circuit and dimming method thereof |
| CN107071982A (en) * | 2017-05-19 | 2017-08-18 | 深圳市晟碟半导体有限公司 | LED drive device and its invariable power light adjusting circuit, light-dimming method |
| WO2018210166A1 (en) * | 2017-05-19 | 2018-11-22 | 深圳市晟碟半导体有限公司 | Led driving device and constant power dimming circuit and dimming method therefor |
| CN107357346A (en) * | 2017-08-24 | 2017-11-17 | 上海乾丰新能源科技有限公司 | A kind of program control program control constant-current supply of compensation of signal lamp |
| CN109462920A (en) * | 2017-09-06 | 2019-03-12 | 深圳市海洋王照明工程有限公司 | A kind of lighting apparatus and its control circuit |
| CN107820347A (en) * | 2017-11-30 | 2018-03-20 | 欧普照明股份有限公司 | A kind of driving power and lighting device |
| CN108966416A (en) * | 2018-07-11 | 2018-12-07 | 昆山仕优威电子科技有限公司 | A kind of control system of UV LED light source |
| CN109640437A (en) * | 2018-12-07 | 2019-04-16 | 苏州纽克斯电源技术股份有限公司 | A kind of LED dimming control system |
| CN110177410A (en) * | 2019-05-24 | 2019-08-27 | 深圳市晟碟半导体有限公司 | A kind of LED light adjusting circuit, dimming device and light-dimming method |
| CN111629490A (en) * | 2020-07-07 | 2020-09-04 | 中科慧远视觉技术（洛阳）有限公司 | Current-adjustable and PWM (pulse-width modulation) strobe frequency controlled constant-current driving circuit and control method |
| CN111917304A (en) * | 2020-08-10 | 2020-11-10 | 北京新雷能科技股份有限公司 | Digital power supply |
| CN111917304B (en) * | 2020-08-10 | 2022-05-10 | 北京新雷能科技股份有限公司 | Digital power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103607810A (en) | Control circuit of LED lighting equipment | |
| CN102105007B (en) | LED constant-current driver with boosting function | |
| CN201813599U (en) | LED (Light-Emitting Diode) dimmer power | |
| CN202135363U (en) | Constant current driver for light emitting diode (LED) | |
| CN201937925U (en) | LED constant current driver with function of voltage reduction | |
| CN103547045A (en) | Drive power supply of LED energy-saving lamp | |
| CN202551459U (en) | LED (Light Emitting Diode) driving power supply module for silicon controlled regulating circuit | |
| CN102438376B (en) | LED (Light Emitting Diode) constant-current driving power circuit | |
| CN204145795U (en) | Have APFC function without working frequency ripple wave LED streetlamp power source | |
| CN203618188U (en) | Driving power supply of LED energy-saving lamp | |
| CN203086806U (en) | A light adjusting circuit of a fluorescent lamp | |
| CN203590567U (en) | AC power supply-based LED drive circuit with function of automatic illumination intensity adjusting | |
| CN103491664A (en) | Load actuating device and method for light emitting diode lamp and lighting device with light emitting diode lamp | |
| CN104735837A (en) | LED street lamp power supply without power frequency ripples and with APFC function | |
| CN203661373U (en) | Solar and mains supply-compatible warning lamp | |
| CN203279239U (en) | A factory explosion-proof and intrinsically safe LED lamp | |
| CN103415118B (en) | Backlight drive circuit, electronic installation and backlight driving method | |
| CN103338545B (en) | A kind of fluorescent lamp light adjusting circuit and method of work thereof | |
| CN202435663U (en) | Non-isolated LED constant-current driving power source with high power factor | |
| CN203015236U (en) | A LED driving power supply | |
| CN201877108U (en) | Light-emitting diode (LED) screen backlight drive circuit | |
| CN102843808A (en) | Constant current driver of light emitting diode | |
| CN202587529U (en) | Pulse width modulation (PWM) dimming circuit for high-voltage direct current centralized power supply light emitting diode (LED) constant current source | |
| CN205336595U (en) | LED high frequency drive circuit | |
| CN202035173U (en) | Nonpolarity dimmable LED light |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140226 |