CN108541111A - Constant current output control circuit, method and LED matrix for LED light illumination driving - Google Patents
Constant current output control circuit, method and LED matrix for LED light illumination driving Download PDFInfo
- Publication number
- CN108541111A CN108541111A CN201810540152.9A CN201810540152A CN108541111A CN 108541111 A CN108541111 A CN 108541111A CN 201810540152 A CN201810540152 A CN 201810540152A CN 108541111 A CN108541111 A CN 108541111A
- Authority
- CN
- China
- Prior art keywords
- led light
- constant current
- light string
- output
- signal
- 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.)
- Granted
Links
- 238000005286 illumination Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000011159 matrix material Substances 0.000 title claims abstract description 11
- 238000005070 sampling Methods 0.000 claims description 14
- 238000007493 shaping process Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 8
- 230000005669 field effect Effects 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 101000746134 Homo sapiens DNA endonuclease RBBP8 Proteins 0.000 description 4
- 101000969031 Homo sapiens Nuclear protein 1 Proteins 0.000 description 4
- 102100021133 Nuclear protein 1 Human genes 0.000 description 4
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 4
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- CVOFKRWYWCSDMA-UHFFFAOYSA-N 2-chloro-n-(2,6-diethylphenyl)-n-(methoxymethyl)acetamide;2,6-dinitro-n,n-dipropyl-4-(trifluoromethyl)aniline Chemical compound CCC1=CC=CC(CC)=C1N(COC)C(=O)CCl.CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O CVOFKRWYWCSDMA-UHFFFAOYSA-N 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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]
- H05B45/40—Details of LED load circuits
-
- 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]
-
- 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]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention belongs to electronic circuit technology field, constant current output control circuit, method and the LED matrix for LED light illumination driving are provided, after carrying out rectification to the AC signal that AC power exports by rectification module, exports direct current signal；And by control module according to the direct current signal, control signal is charged and exported to capacitance to drive LED light string, and detects and control the electric current for flowing through LED light string.It is thus achieved that using few device, the effect of constant current driving can be carried out to LED light string, it reduces circuit cost and its type of drive efficiency is higher, solving existing LED light illumination actuation techniques, there is inefficiency, the more problems for leading to circuit complexity of circuit components.
Description
Technical field
The invention belongs to electronic circuit technology fields, more particularly, to the constant current output control electricity of LED light illumination driving
Road, method and LED matrix.
Background technology
In recent years, with the development of LED light lighting engineering, various actuation techniques emerge one after another, but with application
The continuous expansion in field, the requirement for driving is also more and more special, such as：Size, transfer efficiency and other demands
Etc., all receive corresponding constraint.Meanwhile factors appear in certain LED light lighting areas when cost sensitivity, circuit be reliable etc.
When, although existing drive some circuits itself more outstanding, for cost problem, contain perceptual original paper and excessive electricity
Solution capacitive device still can not be avoided；And some circuits are fairly simple, and Linear Driving is directly used to replace, disadvantage is that conversion is imitated
Rate is low, and meeting power loss is on current limiting device.
Therefore, there is inefficiency for existing LED light illumination actuation techniques, and circuit components are more to cause circuit complicated
The problem of.
Invention content
The purpose of the present invention is to provide for the constant current output control circuit of LED light illumination driving, method and LED dresses
It sets, it is intended to solve existing LED light illumination actuation techniques there is inefficiency, circuit components are more to cause circuit complicated
Problem.
First aspect present invention provides a kind of constant current output control circuit for LED light illumination driving, including capacitance
And LED light string, the constant current output control circuit further include：
AC power is connect, after the AC signal for being exported to the AC power carries out rectification, exports direct current signal
Rectification module；
It is connected with the rectification module, for according to the direct current signal, the capacitance being charged and being exported control
Signal processed detects and controls the control module for the electric current for flowing through the LED light string to drive the LED light string.
Second aspect of the present invention provides a kind of LED matrix, including capacitance, LED light string and AC power, the LED
Device further includes constant current output control circuit as described above
Third aspect present invention provides a kind of constant current output control method for LED light illumination driving, the constant current
Output control method includes：
Loading capacitance and LED light string in constant current output control circuit, and incoming transport power supply；
After carrying out rectification to the AC signal of AC power output, direct current signal is exported；
According to the direct current signal, the capacitance is charged and is exported control signal to drive the LED light string, and
Detection and control flow through the electric current of the LED light string.
Provided by the present invention for constant current output control circuit, method and the LED matrix of LED light illumination driving, by whole
After flow module carries out rectification to the AC signal that AC power exports, direct current signal is exported；And it is straight according to this by control module
Signal is flowed, control signal is charged and exported to capacitance to drive LED light string, and detects and control the electricity for flowing through LED light string
Stream.It is thus achieved that using few device, you can the effect for carrying out constant current driving to LED light string reduces circuit cost simultaneously
And its type of drive efficiency is higher, solves existing LED light illumination actuation techniques there is inefficiency, circuit components compared with
The problems for leading to circuit complexity more.
Description of the drawings
Fig. 1 is the modular structure schematic diagram provided by the present invention for the constant current output control circuit of LED light illumination driving.
Fig. 2 is the exemplary circuit figure provided by the present invention for the constant current output control circuit of LED light illumination driving.
Fig. 3 is that AC power exports in the constant current output control circuit provided by the present invention for LED light illumination driving
The waveform diagram of AC signal.
Fig. 4 be in the constant current output control circuit provided by the present invention for LED light illumination driving AC signal by whole
Waveform diagram after stream.
Fig. 5 is the unit of control module in the constant current output control circuit provided by the present invention for LED light illumination driving
Structural schematic diagram.
Fig. 6 is the circuit of control module in the constant current output control circuit provided by the present invention for LED light illumination driving
Exemplary plot.
Fig. 7 is each portion of control module in the constant current output control circuit provided by the present invention for LED light illumination driving
The waveform diagram for the important node divided.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Above-mentioned constant current output control circuit, method and the LED matrix for LED light illumination driving, using capacitance voltage
The characteristic that can not be mutated forms one using constant-current charge, constant current detection and is based on capacitor charge and discharge, and can realize that constant current is defeated
Go out.First, ac input end input AC is electric (90-265V AC, 50/60Hz), by full-wave rectification, forms one and does not filter
The direct current of wave；Then external capacitance charge and to external LED light string by internal high-voltage constant-current circuit
It is powered accordingly；And sampling resistor voltage is detected to realize the constant of output current, to realize that LED illumination constant current is driven
It is dynamic.It is thus achieved that few device can be used, you can to the effect of LED illumination constant current driving.
Fig. 1 shows the modular structure of the constant current output control circuit provided by the present invention for LED light illumination driving, is
Convenient for explanation, only the parts related to this embodiment are shown, details are as follows：
A kind of above-mentioned constant current output control circuit for LED light illumination driving, including capacitance C1 and LED light string 104, should
Constant current output control circuit further includes rectification module 102 and control module 103.
Rectification module 102 connects AC power 101, defeated after the AC signal for being exported to AC power 101 carries out rectification
Go out direct current signal.
Control module 103 is connected with rectification module 102, and for according to direct current signal, charging and defeated is carried out to capacitance C1
Go out to control signal to drive LED light string 104, and detects and control the electric current for flowing through LED light string 104.
As an embodiment of the present invention, the voltage range that above-mentioned AC power 101 exports is 90-265V, frequency 50/
60Hz。
As an embodiment of the present invention, above-mentioned control module 103 is according to the direct current signal after rectification, on the one hand to capacitance C1
It charges, on the other hand output control signal is to drive LED light string；Meanwhile synchronous detection flows through the electric current of LED light string 104,
It can discharge after capacitance C1 is fully charged, therefore, the meeting basis of control module 103 detects the electric current tune for flowing through LED light string 104
The control signal for saving itself output is realized with further ensuring that the electric current for flowing through LED light string 104 is continuously in predetermined threshold value
LED illumination constant current driving.
Fig. 2 shows the exemplary circuit of the constant current output control circuit driven provided by the present invention for LED light illumination, figures
3 and Fig. 4 respectively illustrates AC power in the constant current output control circuit provided by the present invention for LED light illumination driving and exports
AC signal and the waveform diagram after over commutation, for convenience of description, only the parts related to this embodiment are shown,
Details are as follows：
As an embodiment of the present invention, above-mentioned rectification module 102 includes the first diode D1, the second diode D2, third
Diode D3 and the 4th diode D4；
The cathode of first diode D1 connects the anode of the second diode D2, and the anode of the first diode D1 connects third diode
The cathode of the anode of D3, the second diode D2 connects the cathode of the 4th diode D4, and the cathode of third diode D3 connects the four or two pole
The anode of pipe D4.
Specifically, above-mentioned rectification module 102 is realized by the mode of full-bridge rectification, certainly, Half bridge rectifier can also be used
Mode realize.
Fig. 5 shows control module in the constant current output control circuit provided by the present invention for LED light illumination driving
Cellular construction, for convenience of description, only the parts related to this embodiment are shown, and details are as follows：
As an embodiment of the present invention, above-mentioned control module 103 includes impulse generator 1033, constant-current control unit
1031, shaping unit 1032 and first switch pipe Q1 are sampled；
The input of constant-current control unit 1031 terminates rectification module 102, the output termination first of constant-current control unit 1031
The input terminal of switching tube Q1, impulse generator 1033 are connected with sampling shaping unit 1032, sample the defeated of shaping unit 1032
Enter end for detecting the electric current for flowing through LED light string 104, the output termination first switch pipe Q1's of sampling shaping unit 1032 is controlled
End, the output end of first switch pipe Q1 is for being charged and being exported control signal to capacitance C1 to drive LED light string 104.
Specifically, above-mentioned first switch pipe Q1 is field-effect tube or triode；
Grid, drain electrode and the source electrode of field-effect tube are respectively the controlled end, input terminal and output of first switch pipe Q1
End；
Base stage, collector and the emitter of triode are respectively the controlled end of first switch pipe Q1, input terminal and defeated
Outlet.
Fig. 6 shows control module in the constant current output control circuit provided by the present invention for LED light illumination driving
Exemplary circuit, for convenience of description, only the parts related to this embodiment are shown, and details are as follows：
As an embodiment of the present invention, above-mentioned constant-current control unit 1031 includes constant current comparator COM2 and second switch pipe
Q2；
The normal phase input end of constant current comparator COM2 accesses reference voltage V ref, the inverting input of constant current comparator COM2
It is connect altogether with the output end of second switch pipe Q2 and as the output end of constant-current control unit 1031, the output of constant current comparator COM2
The controlled end of second switch pipe Q2 is terminated, the input terminal of second switch pipe Q2 is the input terminal of constant-current control unit 1031.
Specifically, above-mentioned second switch pipe Q2 is field-effect tube or triode；
Grid, drain electrode and the source electrode of field-effect tube are respectively the controlled end, input terminal and output of second switch pipe Q2
End；
Base stage, collector and the emitter of triode are respectively the controlled end of second switch pipe Q2, input terminal and defeated
Outlet.
As an embodiment of the present invention, above-mentioned sampling shaping unit 1032 includes input buffer D1, threshold comparator
COM1 and door AND1 and buffering driver T1；
For the normal phase input end of input buffer D1 for detecting the electric current for flowing through LED light string 104, input buffer D1's is anti-
Phase input terminal connects altogether with the output end of input buffer D1 and the inverting input of threshold comparator COM1, threshold comparator
The normal phase input end of COM1 accesses reference voltage V ref, the output termination of threshold comparator COM1 and the first input of door AND1
End, the second input termination impulse generator 1033 with door AND1, the input with the output termination buffering driver T1 of door AND1
The output end at end, buffering driver T1 is the output end for sampling shaping unit 1032.
Fig. 7 shows that control module is each in the constant current output control circuit provided by the present invention for LED light illumination driving
The waveform of the important node of a part, and Fig. 1-Fig. 6 is combined, the above-mentioned constant current output for LED light illumination driving is controlled
The operation principle of circuit is described as follows：
First, High Level AC Voltage is by after full-bridge rectification, and waveform becomes waveform (or the S201 letters in Fig. 7 of Fig. 4 signals
Number)；Then, then the ports HVIN of control module 103 are input to, by internal constant-current control unit 1031 and first switch pipe
Q1, and being controlled by the waveform (S202 in Fig. 7) that is sent out of sampling shaping unit 1032, through VCC to the capacitance C1 of outside into
Row charging, the current waveform of charging are the S203 in Fig. 7.
According to：
It can obtain, VCC raised voltages are almost linear rise, and waveform is shown in the S205 ascent stages in Fig. 7.Meanwhile with voltage
Rising, LED light string 104 by current non-linear increase, the voltage of CS can also increase in proportion (see the S205 in Fig. 7).
After increasing to the threshold value inside CS, carried out with the waveform (S204 in Fig. 7) that impulse generator 1033 generates
It is corresponding to compare, generate the control signal (S202 in Fig. 7) of control switching tube.
Constant current switch is turned off, the electric current of LED light string 104 is entirely to be powered by VCC capacitances C1 at this time, at this time VCC voltages
With the electric current by LED light string 104 can non-linear decline, wait for next charge cycle.
The present invention also provides LED matrix, including capacitance, LED light string and AC power, on which further includes
The constant current output control circuit stated, according to capacitor charge and discharge principle, being risen using constant-current charge, capacitance voltage controllable etc. is had
Sharp condition, and the voltage on leakage resistance is examined by detection, to realize corresponding constant current output.
The advantages of above-mentioned constant current output control circuit and LED matrix driven for LED light illumination, is embodied in：
1) the ac input signal phase sampling circuit of virtual earth.Since control module (chip) is operated in high pressure conditions in itself
Under, chip need to use high-pressure process, the chip that this programme uses to be sampled for part virtual earth mode, avoid and directly use on the spot
Mode Sample AC input signal phase, reduces cost.
2) constant current output under Width funtion.The electric current that LED light string is directly flowed through by sampling, may be implemented constant current under Width funtion
Output, and compared to the chip of other Width funtion constant current outputs, peripheral circuit is simple, if only dry units is needed to can be realized accordingly
Function, BOM are at low cost.
The present invention also provides a kind of constant current output control method for LED light illumination driving, constant current output controls
Method includes the following steps：
A. loading capacitance and LED light string in constant current output control circuit, and incoming transport power supply；
B. after carrying out rectification to the AC signal of AC power output, direct current signal is exported；
C. according to direct current signal, control signal is charged and exported to capacitance to drive LED light string, and is detected and controlled
Flow through the electric current of LED light string.
As an embodiment of the present invention, it is specifically to use full-bridge rectification to carry out rectification to the AC signal of AC power output
Mode, it is of course also possible to use the mode of Half bridge rectifier.
As an embodiment of the present invention, according to the direct current signal, control signal is charged and exported to capacitance to drive
Dynamic LED light string, and detect and control flows through the electric current of LED light string and is specially：
After handling direct current signal, output voltage charges to capacitance and is exported control signal to drive LED
Lamp string, and capacitance storage electricity reach predetermined threshold value when, detection flow through LED light string electric current and adjusting control signal so that
The electric current for flowing through LED light string is in predetermined threshold value, that is, realizes LED illumination constant current driving.
To sum up, constant current output control circuit, method and the LED provided in an embodiment of the present invention for LED light illumination driving
Device exports direct current signal after carrying out rectification to the AC signal that AC power exports by rectification module；And by controlling mould
Root tuber is charged and is exported control signal according to the direct current signal, to capacitance to drive LED light string, and is detected and controlled and flow through
The electric current of LED light string.It is thus achieved that using few device, you can the effect for carrying out constant current driving to LED light string reduces
Circuit cost and its type of drive efficiency is higher, solving existing LED light illumination actuation techniques, there is inefficiency, electricity
The more problem for leading to circuit complexity of road component.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of constant current output control circuit for LED light illumination driving, including capacitance and LED light string, which is characterized in that institute
Stating constant current output control circuit further includes：
AC power is connect, after the AC signal for being exported to the AC power carries out rectification, exports the rectification of direct current signal
Module；
It is connected with the rectification module, for according to the direct current signal, the capacitance being charged and being exported control letter
Number to drive the LED light string, and detect and control flow through the LED light string electric current control module.
2. constant current output control circuit as described in claim 1, which is characterized in that the control module includes pulse generation
Device, constant-current control unit, sampling shaping unit and first switch pipe；
The input of the constant-current control unit terminates the rectification module, the output termination described first of the constant-current control unit
The input terminal of switching tube, the impulse generator are connected with the sampling shaping unit, the input of the sampling shaping unit
End for detect the electric current for flowing through the LED light string, the output termination first switch pipe of the sampling shaping unit by
End is controlled, the output end of the first switch pipe is for being charged and being exported control signal to the capacitance to drive the LED
Lamp string.
3. constant current output control circuit as claimed in claim 2, which is characterized in that the first switch pipe be field-effect tube or
Person's triode；
Grid, drain electrode and the source electrode of the field-effect tube are respectively the controlled end of the first switch pipe, input terminal and defeated
Outlet；
Base stage, collector and the emitter of the triode be respectively the controlled end of the first switch pipe, input terminal and
Output end.
4. constant current output control circuit as claimed in claim 2, which is characterized in that the constant-current control unit includes constant current ratio
Compared with device and second switch pipe；
The normal phase input end of the constant current comparator accesses reference voltage, the inverting input of the constant current comparator and described the
The output end of two switching tubes connects and altogether as the output end of the constant-current control unit, and the output of the constant current comparator terminates institute
The controlled end of second switch pipe is stated, the input terminal of the second switch pipe is the input terminal of the constant-current control unit.
5. constant current output control circuit as claimed in claim 4, which is characterized in that the second switch pipe be field-effect tube or
Person's triode；
Grid, drain electrode and the source electrode of the field-effect tube are respectively the controlled end of the second switch pipe, input terminal and defeated
Outlet；
Base stage, collector and the emitter of the triode be respectively the controlled end of the second switch pipe, input terminal and
Output end.
6. constant current output control circuit as claimed in claim 2, which is characterized in that the sampling shaping unit includes that input is slow
Rush device, threshold comparator and door and buffering driver；
The normal phase input end of the input buffer is used to detect the electric current for flowing through the LED light string, the input buffer
Inverting input connects altogether with the output end of the input buffer and the inverting input of the threshold comparator, the threshold value
The normal phase input end of comparator accesses reference voltage, and the output of the threshold comparator terminates the first input end with door,
Second input with door terminates the impulse generator, the input that the buffering driver is terminated with the output of door
End, the output end of the buffering driver are the output end of the sampling shaping unit.
7. a kind of LED matrix, including capacitance, LED light string and AC power, which is characterized in that the LED matrix further include as
The constant current output control circuit of any one of the claims 1-6.
8. a kind of constant current output control method for LED light illumination driving, which is characterized in that the constant current output control method
Including：
Loading capacitance and LED light string in constant current output control circuit, and incoming transport power supply；
After carrying out rectification to the AC signal of AC power output, direct current signal is exported；
According to the direct current signal, the capacitance is charged and is exported control signal to drive the LED light string, and detect
And control flows through the electric current of the LED light string.
9. constant current output control method as claimed in claim 8, which is characterized in that believe the exchange of AC power output
Number carry out rectification be specifically by the way of full-bridge rectification.
10. constant current output control method as claimed in claim 8, which is characterized in that according to the direct current signal, to the electricity
Appearance is charged and is exported control signal to drive the LED light string, and detects and control the electric current tool for flowing through the LED light string
Body is：
After handling the direct current signal, output voltage the capacitance is charged and is exported the control signal with
The LED light string is driven, and when the electricity of capacitance storage reaches predetermined threshold value, detection flows through the electricity of the LED light string
It flows and adjusts the control signal and predetermined threshold value is in the electric current for flowing through the LED light string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540152.9A CN108541111B (en) | 2018-05-30 | 2018-05-30 | Constant-current output control circuit and method for LED lamp illumination driving and LED device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540152.9A CN108541111B (en) | 2018-05-30 | 2018-05-30 | Constant-current output control circuit and method for LED lamp illumination driving and LED device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108541111A true CN108541111A (en) | 2018-09-14 |
| CN108541111B CN108541111B (en) | 2024-04-02 |
Family
ID=63473054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810540152.9A Active CN108541111B (en) | 2018-05-30 | 2018-05-30 | Constant-current output control circuit and method for LED lamp illumination driving and LED device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108541111B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114205963A (en) * | 2021-12-21 | 2022-03-18 | 欧普照明股份有限公司 | Linear LED driving circuit and driving method |
| TWI783389B (en) * | 2021-02-26 | 2022-11-11 | 矽誠科技股份有限公司 | Light-emitting diode string control system with carrier wave identification function and method of signal identification the same |
| US11578844B2 (en) | 2021-03-31 | 2023-02-14 | Semisilicon Technology Corp. | Light-emitting diode light string control system with carrier identification function and signal identification method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013137678A1 (en) * | 2012-03-15 | 2013-09-19 | 서울반도체 주식회사 | Driving device for light-emitting device |
| CN106163029A (en) * | 2015-03-30 | 2016-11-23 | 常州明石晶电科技有限公司 | A kind of LED lamp tube and constant current driving device thereof |
| US20170079104A1 (en) * | 2015-09-14 | 2017-03-16 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for current regulation in light-emitting-diode lighting systems |
| CN208434147U (en) * | 2018-05-30 | 2019-01-25 | 深圳市明微电子股份有限公司 | Constant current output control circuit and LED matrix for LED light illumination driving |
-
2018
- 2018-05-30 CN CN201810540152.9A patent/CN108541111B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013137678A1 (en) * | 2012-03-15 | 2013-09-19 | 서울반도체 주식회사 | Driving device for light-emitting device |
| CN106163029A (en) * | 2015-03-30 | 2016-11-23 | 常州明石晶电科技有限公司 | A kind of LED lamp tube and constant current driving device thereof |
| US20170079104A1 (en) * | 2015-09-14 | 2017-03-16 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for current regulation in light-emitting-diode lighting systems |
| CN208434147U (en) * | 2018-05-30 | 2019-01-25 | 深圳市明微电子股份有限公司 | Constant current output control circuit and LED matrix for LED light illumination driving |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI783389B (en) * | 2021-02-26 | 2022-11-11 | 矽誠科技股份有限公司 | Light-emitting diode string control system with carrier wave identification function and method of signal identification the same |
| US11578844B2 (en) | 2021-03-31 | 2023-02-14 | Semisilicon Technology Corp. | Light-emitting diode light string control system with carrier identification function and signal identification method thereof |
| CN114205963A (en) * | 2021-12-21 | 2022-03-18 | 欧普照明股份有限公司 | Linear LED driving circuit and driving method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108541111B (en) | 2024-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107529241B (en) | A kind of linear Constant-power LED drive circuit of single hop and method | |
| CN102497711B (en) | LED drive circuit and comprise the Switching Power Supply of this drive circuit | |
| CN108541111A (en) | Constant current output control circuit, method and LED matrix for LED light illumination driving | |
| CN106851922B (en) | A kind of linear Constant-power LED drive circuit, chip and constant-current LED control system | |
| CN106961768B (en) | A kind of LED linear constant-current drive circuit of active valley-fill circuit mode | |
| CN107979899A (en) | A kind of linear general pump feeds constant-current circuit and has its LED light | |
| CN203814013U (en) | LED driving circuit adopting single-end zero crossing detection | |
| CN102843844A (en) | LED (Light Emitting Diode) control circuit and LED illumination device | |
| CN106487207B (en) | A kind of control method and device of power conversion circuit | |
| CN208434147U (en) | Constant current output control circuit and LED matrix for LED light illumination driving | |
| CN103152894A (en) | Sectional type LED (light emitting diode) driving circuit based on AC (alternating current) power supply | |
| CN103687150B (en) | A kind of without overshoot LED linear constant-current drive circuit | |
| CN216600150U (en) | Linear LED drive circuit | |
| CN202799315U (en) | Overshoot-free light-emitting diode (LED) linear constant current drive circuit | |
| CN206077773U (en) | A kind of driving lighting circuit of stagewise AC LED | |
| CN105471248B (en) | A kind of Switching Power Supply start-up circuit | |
| CN204465961U (en) | Energy-conservation lithium battery LED lamp control system | |
| CN106231738A (en) | The driving lighting circuit of a kind of stagewise AC LED and driving method thereof | |
| CN203327319U (en) | BUCK circuit-based high-power LED constant-current driving device | |
| CN107172763A (en) | Switch toning control circuit, chip, method and switch toning LED drive system | |
| CN206894946U (en) | A kind of LED linear constant-current drive circuit of active valley fill circuit pattern | |
| CN207135318U (en) | One kind utilizes oscillator drives LED circuit | |
| CN204131813U (en) | A kind of fluorescent lamp light adjusting circuit | |
| CN205883647U (en) | There is not linear constant -current drive circuit of stroboscopic LED | |
| CN206559675U (en) | A kind of LED dimming driving circuits |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |