CN107567145A - LED flashing lights control circuit, chip and LED lamp - Google Patents
LED flashing lights control circuit, chip and LED lamp Download PDFInfo
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- CN107567145A CN107567145A CN201710884985.2A CN201710884985A CN107567145A CN 107567145 A CN107567145 A CN 107567145A CN 201710884985 A CN201710884985 A CN 201710884985A CN 107567145 A CN107567145 A CN 107567145A
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- flashing lights
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
A kind of LED flashing lights control circuit, chip and LED lamp, circuit include：Power port, the power supply signal of predetermined waveform is loaded with for accessing；Power circuit, it is connected with the power port, exports supply voltage；Pulse extraction circuit, it is connected with the power port, pulse signal is extracted according to the predetermined waveform；Frequency dividing circuit, it is connected with the pulse extraction circuit and the power circuit, receives the pulse signal and exported after being divided to it；And drive circuit, it is connected with the frequency dividing circuit and the LED, the drive circuit includes multiple output ends for being used to connect the LED, and the drive circuit receives the pulse signal driving LED light-emitting flash after frequency dividing.Circuit is without oscillator/circuit, the area of the circuit/chip of diminution, in addition, making LED light-emitting flash mode associated with predetermined waveform, can then change LED light-emitting flash mode by changing predetermined waveform.
Description
Technical field
The invention belongs to field of LED drive technology, more particularly to a kind of LED flashing lights control circuit without oscillator, core
Piece and LED lamp.
Background technology
At present, in the flashing light product of low side, it is required for using oscillating circuit inside LED drive chip, can be only achieved and allow LED
There is the effect of various sudden strain of a muscle methods.Because the circuit of LED drive chip is originally relatively small, cause oscillating circuit in flashing light chip
The area ratio accounted for is very big.In addition, the type of drive of the flicker such as driving LED of chip has been cured, after upper electricity, chip according to
The type of drive driving LED flickers pre-set, it is impossible to change type of drive again.
The content of the invention
It is an object of the invention to provide a kind of LED flashing lights control circuit, chip and LED without oscillator/circuit
Tool, it is intended to solve that LED drive chip oscillating circuit accounts for present in traditional technical scheme area ratio is very big and lamp dodges
The problem of type of drive is cured.
A kind of LED flashing lights control circuit, for driving LED to flash, the circuit includes：
Power port, the power supply signal of predetermined waveform is loaded with for accessing；
Power circuit, it is connected with the power port, exports supply voltage；
Pulse extraction circuit, it is connected with the power port, pulse signal is extracted according to the predetermined waveform；
Frequency dividing circuit, it is connected with the pulse extraction circuit and the power circuit, receives the pulse signal and to it
Exported after frequency dividing；And
Drive circuit, it is connected with the frequency dividing circuit and the LED, the drive circuit includes multiple for connecting institute
The output end of LED is stated, the drive circuit receives the pulse signal driving LED light-emitting flash after frequency dividing.
Preferably, the pulse extraction circuit then produces when a rising edge occurs in the predetermined waveform of the power supply signal
At least one pulse signal.
Preferably, the pulse extraction circuit includes：
First reverser, input terminate the power port；
Second reverser, input terminate the output end of first reverser；
First electric capacity, the output end of termination second reverser, other end ground connection；And
Nor gate, first input end connect the output end of first reverser, and the second input terminates second reverser
Output end, the output end of the output end of the nor gate as the pulse extraction circuit.
Preferably, the frequency dividing circuit includes multiple two-dividers being connected in series, and in each two-divider
Output end draws the output of pulse signal after dividing all the way to the drive circuit.
Preferably, the drive circuit includes multiple switch pipe, and the control terminal of each switching tube connects respectively divides all the way
The pulse signal after frequency, the input or output end of each switching tube are used to connecting the described of predetermined number or color
LED.
Preferably, the two-divider and the switching tube are three, and the output end of three two-dividers connects respectively
The control terminal of three switching tubes.
Preferably, in addition to electrification reset circuit, the input access supply voltage of the electrification reset circuit are defeated
Go out the reset terminal that end connects each two-divider.
Preferably, the power circuit includes；
Diode, anode connect the power port, and negative electrode exports the supply voltage as voltage output end；With
Second electric capacity, the negative electrode of a termination diode, other end ground connection.
In addition, a kind of LED flashing lights control chip is additionally provided, including above-mentioned LED flashing light control circuits, the chip tool
Have：
Power pins, it is connected with the power port；
Multiple driving pins for being used to drive LED, are connected with each output end of the drive circuit respectively.
In addition, a kind of LED lamp is additionally provided, including LED, and above-mentioned LED flashing lights control chip or LED flashing light controls
Coremaking piece.
Above-mentioned LED flashing lights control circuit, chip and LED lamp without oscillator/circuit, the circuit/chip of diminution
Area, in addition, making LED light-emitting flash mode associated with predetermined waveform, by adding predetermined waveform array to connect on the power line
Enter the power port to circuit, can just cause LED light-emitting flash by way of expectations, in this way, can be by changing default ripple
Shape can then change LED light-emitting flash mode.
Brief description of the drawings
Fig. 1 is the LED flashing light control circuit structural representations that present pre-ferred embodiments provide；
Fig. 2 is the predetermined waveform figure on power supply signal；
Fig. 3 is the exemplary circuit schematic diagram of the LED flashing light control circuits shown in Fig. 1.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
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.
Referring to Fig. 1, the LED flashing light control circuits in present pre-ferred embodiments may be provided at LED flashing light control chips
In, LED flashing lights control circuit and LED flashing lights control chip can be applied in LED lamp, and LED flashing lights control circuit is used to drive
Dynamic LED flicker.
In preferred embodiment, LED flashing lights control circuit 100 includes power port 101, power circuit 102, DISCHARGE PULSES EXTRACTION
Circuit 103, frequency dividing circuit 104, drive circuit 105 and electrification reset circuit 106.
Power port 101 is used to access the power supply signal VCC for being loaded with predetermined waveform, it is understood that for the default ripple of access
The power supply signal of shape；Wherein, Fig. 2 illustrates the predetermined waveform figure on a kind of power supply signal VCC.Power circuit 102 and power end
Mouth 101 connects, output supply voltage VDD；Pulse extraction circuit 103 is connected with power port 101, and arteries and veins is extracted according to predetermined waveform
Rush signal.Frequency dividing circuit 104 is connected with pulse extraction circuit 103 and power circuit 102, return pulse signal and after being divided to it
Output；Drive circuit 105, it is connected with frequency dividing circuit 104 and LED, drive circuit 105 includes multiple for connecting LED
Output end, drive circuit 105 receive the pulse signal driving LED light-emitting flash after frequency dividing.
Further, when whole LED flashing lights control circuit 100 is integrated in chip, chip includes and the power port 101
The power pins of connection, and the driving pin being connected with the output end of drive circuit 105, multiple driving pins are multiple for driving
LED.
Fig. 1 and Fig. 2 are referred to, power circuit 102 has power storage function, and power circuit 102 is by power supply signal VCC's
The power supply being converted into inside control circuit 100, and the supply voltage VDD inside control circuit 100 is higher than certain magnitude of voltage.
In this way, when power supply signal VCC magnitude of voltage is close to GND (zero), the supply voltage VDD inside control circuit 100 will not pour in down a chimney
Onto power port 101, therefore supply voltage VDD or some higher magnitude of voltage inside control circuit 100, make power supply electric
Press the circuit energy normal work inside VDD.
Specifically, power circuit 102 includes diode D1 and electric capacity C1, and diode D1 anode connects power port 101, cloudy
Pole exports supply voltage VDD, the terminating diode D1 of electric capacity C1 mono- negative electrode, other end ground connection as voltage output end.Power supply is believed
When predetermined waveform array on number VCC is high level, internal capacitance C1 is charged, when power supply signal VCC is low level, electric capacity
C1 will not pour in down a chimney voltage to power port 101.Make supply voltage vdd voltage still higher, ensure internal circuit normal work.
Specifically, pulse extraction circuit 103 power supply signal VCC predetermined waveform occur a rising edge when then produce to
A few pulse signal.In present embodiment, pulse extraction circuit 103 will be produced and (carried when a rising edge occurs in predetermined waveform
Take) at least one pulse signal；In other embodiments, can be as needed, a rising edge can extract two or more
Pulse signal.
Preferably, pulse extraction circuit 103 includes the first reverser inv1, the second reverser inv2, electric capacity C2 and/or non-
Door nor.Wherein, the first reverser inv1 inputs termination power port 101；Second reverser inv2 input the first reversers of termination
Inv1 output end；Electric capacity C2 mono- terminates the second reverser inv2 output end, other end ground connection；The first of nor gate nor is defeated
Entering the first reverser inv1 of termination output end, nor gate nor the second input terminates the second reverser inv2 output end, or
Output end of the NOT gate nor output end as pulse extraction circuit 103.
Frequency dividing circuit 104 includes multiple two-divider DFF being connected in series, and in each two-divider DFF output end
The output of pulse signal after dividing all the way is drawn to drive circuit 105.Drive circuit 105 includes multiple switch pipe Q1, Q2, Q3.
In present embodiment, by taking three two-divider DFF and three switching tubes Q1, Q2, Q3 as an example, with three different colours of driving
LED 200, respectively red LED lamp R_LED, green LED lamp G_LED and blue LED lamp B_LED.Frequency dividing circuit 104 is by arteries and veins
The output small-pulse effect frequency dividing of sense circuit is purged with, carries out 3 two divided-frequencies, frequency dividing is with regard to output pulsatile once signal to drive circuit every time
105。
Three two-divider DFF output end connects three switching tubes Q1, Q2, Q3 control terminal respectively.In this way, each switch
Pipe Q1, Q2, Q3 control terminal connect frequency dividing afterpulse signal all the way, each switching tube Q1, Q2, Q3 input or output end respectively
For connecting the LED of predetermined number or color.In present embodiment, switching tube Q1, Q2, Q3 are NMOS tube, the grid of NMOS tube
Pole, drain electrode, source electrode are respectively the control terminal of switching tube, input, output end.Therefore, the source ground of each NMOS tube, it is each
The drain electrode of NMOS tube connects the LED 200 of three different colours as the output end of drive circuit 105 respectively.Specifically, first
Two-divider DFF output connects blue LED lamp B_LED driving NMOS grid, and second frequency divider DFF output connects green
LED G_LED driving NMOS grid, the 3rd frequency divider DFF output connect red LED lamp R_LED driving NMOS's
Grid.
With reference to Fig. 2 and Fig. 3, the relation table of power supply signal VCC waveform array total number and the LED of display is as follows：
In other embodiments, two-divider can set two or more than 4, and accordingly switching tube can also be set
Two or more than 4；In addition, the quantity of switching tube and the quantity of two-divider and connected mode are not necessarily intended to correspond, can
To be the pulse signal after switching tube receives two different frequency dividings.Furthermore switching tube can be PMOS, or NPN/
PNP triode.
The input access supply voltage VDD of the electrification reset circuit 106 of electrification reset circuit 106, output end connection are each
Two-divider DFF reset terminal.Power port 101 just on it is electric when, power circuit 102 charges, produce a pulse signal pair
Each two-divider DFF resets, and default value is 0 when making electric in the output of frequency dividing circuit 104.
Above-mentioned LED flashing lights control circuit 100, chip and LED lamp is without oscillator/circuit, the circuit/chip of diminution
Area, in addition, make LED light-emitting flash mode associated with predetermined waveform, by the power line plus predetermined waveform array
The power port 101 of circuit is linked into, can just cause LED light-emitting flash by way of expectations, in this way, can be pre- by changing
If waveform can then change LED light-emitting flash mode.
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 made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of LED flashing lights control circuit, for driving LED to flash, it is characterised in that the circuit includes：
Power port, the power supply signal of predetermined waveform is loaded with for accessing；
Power circuit, it is connected with the power port, exports supply voltage；
Pulse extraction circuit, it is connected with the power port, pulse signal is extracted according to the predetermined waveform；
Frequency dividing circuit, it is connected with the pulse extraction circuit and the power circuit, receives the pulse signal and it is divided
After export；And
Drive circuit, it is connected with the frequency dividing circuit and the LED, the drive circuit includes multiple described for connecting
The output end of LED, the drive circuit receive the pulse signal driving LED light-emitting flash after frequency dividing.
2. LED flashing lights control circuit as claimed in claim 1, it is characterised in that the pulse extraction circuit is in the power supply
The predetermined waveform of signal occurs then producing at least one pulse signal during a rising edge.
3. LED flashing lights control circuit as claimed in claim 1 or 2, it is characterised in that the pulse extraction circuit includes：
First reverser, input terminate the power port；
Second reverser, input terminate the output end of first reverser；
First electric capacity, the output end of termination second reverser, other end ground connection；And
Nor gate, first input end connect the output end of first reverser, and the second input terminates the defeated of second reverser
Go out end, the output end of the output end of the nor gate as the pulse extraction circuit.
4. LED flashing lights control circuit as claimed in claim 1 or 2, it is characterised in that the frequency dividing circuit includes multiple series connection
The two-divider of connection, and the output of pulse signal after the output end extraction of each two-divider divides all the way arrives
The drive circuit.
5. LED flashing lights control circuit as claimed in claim 4, it is characterised in that the drive circuit includes multiple switch pipe,
The control terminal of each switching tube connects the pulse signal after frequency dividing all the way, the input or defeated of each switching tube respectively
Go out the LED that end is used to connect predetermined number or color.
6. LED flashing lights control circuit as claimed in claim 5, it is characterised in that the two-divider and the switching tube are
Three, the output end of three two-dividers connects the control terminal of three switching tubes respectively.
7. LED flashing lights control circuit as claimed in claim 4, it is characterised in that also including electrification reset circuit, the upper electricity
The input of reset circuit accesses the supply voltage, and output end connects the reset terminal of each two-divider.
8. the LED flashing light control circuits as described in claim 1 or 7, it is characterised in that the power circuit includes；
Diode, anode connect the power port, and negative electrode exports the supply voltage as voltage output end；With
Second electric capacity, the negative electrode of a termination diode, other end ground connection.
9. a kind of LED flashing lights control chip, it is characterised in that including the LED flashing lights control described in any one of claim 1 to 8
Circuit, the chip have：
Power pins, it is connected with the power port；
Multiple driving pins for being used to drive LED, are connected with each output end of the drive circuit respectively.
10. a kind of LED lamp, including LED, it is characterised in that including the LED flashing lights described in any one of claim 1 to 10
Control chip, or the LED flashing light control chips described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884985.2A CN107567145A (en) | 2017-09-26 | 2017-09-26 | LED flashing lights control circuit, chip and LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884985.2A CN107567145A (en) | 2017-09-26 | 2017-09-26 | LED flashing lights control circuit, chip and LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107567145A true CN107567145A (en) | 2018-01-09 |
Family
ID=60982881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710884985.2A Pending CN107567145A (en) | 2017-09-26 | 2017-09-26 | LED flashing lights control circuit, chip and LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107567145A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108156716A (en) * | 2018-01-29 | 2018-06-12 | 宗仁科技(平潭)有限公司 | Multiple LED light come the control circuit of backflash, method and apparatus |
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| EP1656001A1 (en) * | 2004-11-03 | 2006-05-10 | High Tech Computer Corp. | Flashing lights control apparatus and method thereof |
| CN2896781Y (en) * | 2006-03-02 | 2007-05-02 | 中国科学院广州能源研究所 | Moule-mould type solar warning lamp |
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| JP2012150888A (en) * | 2011-01-14 | 2012-08-09 | Sharp Corp | Light-emitting diode lighting control circuit and light-emitting diode lighting control method |
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| CN104507218A (en) * | 2014-12-15 | 2015-04-08 | 罗小华 | Color lamp device on basis of edge signal control of power line |
| CN106452076A (en) * | 2016-09-27 | 2017-02-22 | 上海智浦欣微电子有限公司 | Voltage control method, three-subsection driver and drive circuit |
| CN207518898U (en) * | 2017-09-26 | 2018-06-19 | 宗仁科技(平潭)有限公司 | LED flashing lights control circuit, chip and LED lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1656001A1 (en) * | 2004-11-03 | 2006-05-10 | High Tech Computer Corp. | Flashing lights control apparatus and method thereof |
| CN2896781Y (en) * | 2006-03-02 | 2007-05-02 | 中国科学院广州能源研究所 | Moule-mould type solar warning lamp |
| CN101589539A (en) * | 2007-02-21 | 2009-11-25 | 夏普株式会社 | Load driving circuits, integrated circuit, DC-DC converter, and load driving method |
| JP2012150888A (en) * | 2011-01-14 | 2012-08-09 | Sharp Corp | Light-emitting diode lighting control circuit and light-emitting diode lighting control method |
| CN103220854A (en) * | 2013-04-02 | 2013-07-24 | 深圳市明微电子股份有限公司 | LED (Light-emitting Diode) stroboscopic control circuit and LED stroboscope lamp |
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| CN104507218A (en) * | 2014-12-15 | 2015-04-08 | 罗小华 | Color lamp device on basis of edge signal control of power line |
| CN106452076A (en) * | 2016-09-27 | 2017-02-22 | 上海智浦欣微电子有限公司 | Voltage control method, three-subsection driver and drive circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108156716A (en) * | 2018-01-29 | 2018-06-12 | 宗仁科技(平潭)有限公司 | Multiple LED light come the control circuit of backflash, method and apparatus |
| CN108156716B (en) * | 2018-01-29 | 2024-03-19 | 宗仁科技(平潭)股份有限公司 | Control circuit, method and device for flashing back multiple LED lamps |
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Address after: 350400 2nd floor, building 9, Taiwan Pioneer Park, jinjingwan 2nd Road, beicuo Town, Pingtan County, Fuzhou City, Fujian Province Applicant after: Zongren Technology (Pingtan) Co.,Ltd. Address before: 350400 area B, 6th floor, building 17, Taiwan Pioneer Park, beicuo Town, Pingtan County, Fuzhou City, Fujian Province Applicant before: ZONGREN TECHNOLOGY (PINGTAN) Co.,Ltd. |
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