CN105050264A - LED (Light Emitting Diode) drive phase shift control circuit - Google Patents
LED (Light Emitting Diode) drive phase shift control circuit Download PDFInfo
- Publication number
- CN105050264A CN105050264A CN201510419040.4A CN201510419040A CN105050264A CN 105050264 A CN105050264 A CN 105050264A CN 201510419040 A CN201510419040 A CN 201510419040A CN 105050264 A CN105050264 A CN 105050264A
- Authority
- CN
- China
- Prior art keywords
- pin
- trigger
- double
- data
- serial
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
The invention provides an LED (Light Emitting Diode) drive phase shift control circuit, which comprises a power supply unit, a data storage unit, a serial counting unit, a Johnson counting unit, a pulse broadening unit and a pulse phase superposition unit, wherein the power supply unit is respectively connected to the data storage unit and the pulse broadening unit; the data storage unit comprises a serial clock input end SCL and a serial data input end SDA; the serial data input end SDA of the data storage unit is connected to a first signal input end of the pulse broadening unit; the Johnson counting unit is connected to a second signal input end of the pulse broadening unit; an output end of the pulse broadening unit is connected to a data input end of the pulse phase superposition unit; a first signal output end of the serial counting unit is connected to a clock signal input end of the Johnson counting unit; and a second signal output end of the serial counting unit is connected to a clock signal input end of the pulse phase superposition unit.
Description
Technical field
The invention belongs to LED constant current Driving technique field, be specifically related to a kind of LED realizing multiple-pulse constant current-supplying and drive Phaseshift controlling circuit.
Background technology
LED light source as light source of new generation, just in fast development.LED is a kind of solid-state light emitting semiconductor device, it directly can be converted into light electricity, its have power consumption less, the advantage such as applicability is strong, stability is high, response time short (switching characteristic is good), environmentally safe, multicolor luminous, color developing is good, be the new light sources be worthy to be popularized.
Generally adopting at present concentrates constant current-supplying to carry out driving LED luminescence, and according to the size of LED chip size, the power of single LEDs has 0.1W, 0.2W, 0.5W, 1W etc., expect larger power, LED will be combined use in serial or parallel connection mode.Because LED is that semi-conducting material is made, have certain discrete type, their Vf values can not be consistent, if be all together in series by LED, according to the feature of series circuit, series circuit current is equal, little with the Vf value relation of single LEDs, drive a string LED more satisfactory with a constant-current supply; But the Vf value of single LEDs is about 3V, can not unconfined series connection, therefore when high-power use, have employed a few string several and combination, drive power supply by a constant current.When there being parallel connection to occur, according to parallel circuits feature, voltage is equal, current summation, it is unequal that total Vf value is gone here and there by each branch, and the electric current of LED string varies, the lamp string that electric current is large can damage because long-time junction temperature is too high, electric current can be added on other lamp pearl strings by constant-current supply, forms vicious circle, shortens the useful life of LED lamp.
Therefore be badly in need of, for the above-mentioned defect existed in prior art, providing a solution, solve problems of the prior art.
Summary of the invention
The object of the present invention is to provide a kind of LED realizing multiple-pulse constant current-supplying to drive Phaseshift controlling circuit, in order to solve the problem that when pulse is powered, light efficiency is low, coupling multi-path constant-current drive circuit uses, and can effectively reduce LED junction temperature, strengthens LED light effect.
The object of the present invention is achieved like this, comprises power subsystem, data storage cell, serial counting unit, Johnson counting unit, also comprises pulse stretching unit and impulse phase superpositing unit, described power subsystem is connected with pulse stretching unit with data storage cell respectively, described data storage cell comprises serial clock input SCL and serial data input SDA, its serial data input SDA is connected with the first signal input part of pulse stretching unit, described Johnson counting unit is connected with the secondary signal input of pulse stretching unit, the output of described pulse stretching unit is connected with the data input pin of impulse phase superpositing unit, first signal output part of described serial counting unit is connected with the clock signal input terminal of Johnson counting unit, the secondary signal output of described serial counting unit is connected with the clock signal input terminal of impulse phase superpositing unit.
Compared with prior art, LED provided by the invention drives Phaseshift controlling circuit to be applied in LED drive circuit widely, effective solution pulse is powered the low problem of light efficiency, when coupling multipath LED constant current drive circuit uses, the multiple-pulse constant current-supplying to many group LED lamp bead strings can be realized, the batch (-type) realizing LED is lighted, junction temperature when LED lamp bead string is worked reduces by more than 20%, light intensity improves 1.6 times, light decay reduces, required radiator area reduces, and extends the useful life of LED lamp; Can unify to change the continuous current by LED lamp bead string by the input data changed in data storage cell simultaneously, thus change the working method of LED lamp bead string.
Accompanying drawing explanation
Fig. 1 is the general principles schematic diagram that LED of the present invention drives Phaseshift controlling circuit;
Fig. 2 is the particular circuit configurations schematic diagram that LED of the present invention drives Phaseshift controlling circuit;
Fig. 3 is the driving phase assignments oscillogram that LED of the present invention drives Phaseshift controlling circuit.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, but must not be limited the present invention by any way, and any change done based on training centre of the present invention or improvement, all belong to protection scope of the present invention.
Fig. 1 gives the LED of the present invention schematic diagram driving Phaseshift controlling circuit, in the present invention, described LED drives Phaseshift controlling circuit to comprise power subsystem 1, data storage cell 2, serial counting unit 4, Johnson counting unit 5, pulse stretching unit 3 and impulse phase superpositing unit 6, described power subsystem 1 is connected with pulse stretching unit 3 with data storage cell 2 respectively, described data storage cell 2 comprises serial clock input SCL and serial data input SDA, its serial data input SDA is connected with the first signal input part of pulse stretching unit 3, described Johnson counting unit 5 is connected with the secondary signal input of pulse stretching unit 3, the output of described pulse stretching unit 3 is connected with the data input pin of impulse phase superpositing unit 6, first signal output part of described serial counting unit 4 is connected with the clock signal input terminal of Johnson counting unit 5, the secondary signal output of described serial counting unit 4 is connected with the clock signal input terminal of impulse phase superpositing unit.
Fig. 2 is the particular circuit configurations schematic diagram that LED of the present invention drives Phaseshift controlling circuit.According to Fig. 2, described power subsystem 1 is power supply VCC, described data storage cell 2 is erasable pin-saving chip U1, described serial counting unit 4 is 14 binary system serial counter IC1, described Johnson counting unit 5 is Johnson counter IC2, described pulse stretching unit 3 is by two input Schmidt trigger IC3, IC4, and switching diode D1, slide rheostat RW1, resistance R3 and electric capacity C1 form; Described impulse phase superpositing unit 6 is made up of double D trigger IC5 ~ IC16.
The power pins VDD of described erasable pin-saving chip U1 is connected to power supply VCC, its A0, A1, A2, GND and WP pin ground connection, its serial clock pin SCL external clock signal, the external serial data signal of its serial data pin SDA, and No. 1 input pin being connected to two input Schmidt trigger IC3;
The RST pin ground connection of described 14 binary system serial counter IC1, one end of the CIN pin contact resistance R1 of described 14 binary system serial counter IC1, the COUT pin of described 14 binary system serial counter IC1 connects one end of electric capacity C1, described 14 binary system serial counter IC1's
one end of pin contact resistance R2, the other end of described resistance R1 and the other end of electric capacity C1, and the other end of resistance R2 is connected, the Q4 pin of described 14 binary system serial counter IC1 is connected with the clock pins CK of double D trigger IC5 ~ IC16 respectively, and the Q7 pin of described 14 binary system serial counter IC1 is connected with the CLK pin of Johnson counter IC2;
Described Johnson counter IC2's
pin is connected with the Q5 pin of Johnson counter IC2, the RST pin ground connection of described Johnson counter IC2, and the Q0 pin of described Johnson counter IC2 is connected with No. 2 input pins of two input Schmidt trigger IC3;
The negative pole of No. 3 output pin connecting valve diode D1 of described two input Schmidt trigger IC3, the positive pole of described switching diode D1 is connected with No. 6 input pins with No. 5 input pins of two input Schmidt trigger IC4, ground connection after the positive pole serial capacitance C2 of simultaneously described switching diode D1, one end of described slide rheostat RW1 is connected with power supply VCC, is connected after the other end series resistor R3 of described slide rheostat RW1 with the positive pole of switching diode D1;
No. 4 output pin output pulse signal T1 of described two input Schmidt trigger IC4, and be connected with the data-out pin D of double D trigger IC5, the equal ground connection of set pin S of described double D trigger IC5 ~ IC16, the equal ground connection of reset pin R of described double D trigger IC5 ~ IC15, the true form output pin Q of described double D trigger IC5 is connected with the data-out pin D of double D trigger IC6, the true form output pin Q of described double D trigger IC6 is connected with the data-out pin D of double D trigger IC7, the true form output pin Q of described double D trigger IC7 is connected with the data-out pin D of double D trigger IC8, the true form output pin Q output pulse signal T2 of described double D trigger IC8, and be connected with the data-out pin D of double D trigger IC9, the true form output pin Q of described double D trigger IC9 is connected with the data-out pin D of double D trigger IC10, the true form output pin Q of described double D trigger IC10 is connected with the data-out pin D of double D trigger IC11, the true form output pin Q of described double D trigger IC11 is connected with the data-out pin D of double D trigger IC12, the true form output pin Q output pulse signal T3 of described double D trigger IC12, and be connected with the data-out pin D of double D trigger IC13, the true form output pin Q of described double D trigger IC13 is connected with the data-out pin D of double D trigger IC14, the true form output pin Q of described double D trigger IC14 is connected with the data-out pin D of double D trigger IC15, the true form output pin Q of described double D trigger IC15 is connected with the data-out pin D of double D trigger IC16, the true form output pin Q output pulse signal T4 of described double D trigger IC16.
the operation principle of described LED driving Phaseshift controlling circuit is:
When after power on circuitry, erasable pin-saving chip U1 outputting data signals is to pulse stretching unit, and control impuls broadening, makes the width of pulse stretching by the control of input data; Described 14 binary system serial counter IC1, for generation of reference signal, by changing the parameter of its external electric capacity C1 and resistance R1, resistance R2, can change its reference frequency; Described Johnson counter IC2 is used for carrying out phase assignments, and generation phase place is that the repetition phase distribution of signal of 72 degree exports to pulse stretching unit; The pulse duration of the pulse output signals T1 that pulse stretching unit exports is subject to the control of erasable pin-saving chip U1 outputting data signals, and the phase distribution of signal that the advanced position of the pulse signal T1 that pulse stretching unit exports is exported by Johnson counter IC2 determines; Described impulse phase superpositing unit exports 3 pulse signals T2, T3, T4, and described pulse signal T1, T2, T3, T4 are used for being supplied to 4 groups of constant-current drive circuit work.
When described LED drives Phaseshift controlling Circuit Matching multipath LED constant current drive circuit to use, the multiple-pulse constant current-supplying to many group LED lamp bead strings can be realized, the distribution that the data provided according to erasable pin-saving chip U1 and impulse phase superpositing unit provide by external LED lamp bead string orderly, luminous with the frequency gap of 500Hz/S, junction temperature when LED lamp bead string is worked reduces by more than 20%, light intensity improves 1.6 times, light decay reduces, required radiator area reduces, and extends the useful life of LED lamp; Be pulse constant current electric current by the electric current of LED lamp bead string, therefore can unify to change the size by the continuous current of LED lamp bead string by the input data changed in data storage cell, thus change the working method of LED lamp bead string.
Below by reference to the accompanying drawings the present invention is explained in detail, but the present invention is not limited to described execution mode.Basic ideas of the present invention are the Phaseshift controlling circuit providing a kind of LED to drive, for realizing the independent pulse constant current-supplying of many group LED lamp bead strings, make not interfereing with each other between string and string of LED lamp bead string in parallel, and realize the interval luminous of LED, reduce LED junction temperature, extend the useful life of LED lamp; Only illustrate in execution mode provided by the invention that the LED that can realize 4 groups of lamp pearl string independence pulse constant current-supplyings drives Phaseshift controlling circuit, but for the person of ordinary skill of the art, according to instruction of the present invention, designing the multi-form Phaseshift controlling circuit that can realize more than 4 groups does not need performing creative labour.Therefore the change carried out these execution modes in the case of without departing from the principles of the present invention, amendment, replacement and modification still fall within the scope of protection of the present invention.
Claims (3)
1.LED drives Phaseshift controlling circuit, comprise power subsystem (1), data storage cell (2), serial counting unit (4), Johnson counting unit (5), it is characterized in that: also comprise pulse stretching unit (3) and impulse phase superpositing unit (6), described power subsystem (1) is connected with pulse stretching unit (3) with data storage cell (2) respectively, described data storage cell (2) comprises serial clock input SCL and serial data input SDA, its serial data input SDA is connected with the first signal input part of pulse stretching unit (3), described Johnson counting unit (5) is connected with the secondary signal input of pulse stretching unit (3), the output of described pulse stretching unit (3) is connected with the data input pin of impulse phase superpositing unit (6), first signal output part of described serial counting unit (4) is connected with the clock signal input terminal of Johnson counting unit (5), the secondary signal output of described serial counting unit (4) is connected with the clock signal input terminal of impulse phase superpositing unit (6).
2. LED according to claim 1 drives Phaseshift controlling circuit, it is characterized in that: described power subsystem (1) is power supply VCC, described data storage cell (2) is erasable pin-saving chip U1, described serial counting unit (4) is 14 binary system serial counter IC1, described Johnson counting unit (5) is Johnson counter IC2, described pulse stretching unit (3) is by two input Schmidt trigger IC3, IC4, and switching diode D1, slide rheostat RW1, resistance R3 and electric capacity C1 form; Described impulse phase superpositing unit (6) is made up of double D trigger IC5 ~ IC16.
3. LED according to claim 2 drives Phaseshift controlling circuit, it is characterized in that: the power pins VDD of described erasable pin-saving chip U1 is connected to power supply VCC, its A0, A1, A2, GND and WP pin ground connection, its serial clock pin SCL external clock signal, the external serial data signal of its serial data pin SDA, and No. 1 input pin being connected to two input Schmidt trigger IC3;
The RST pin ground connection of described 14 binary system serial counter IC1, one end of the CIN pin contact resistance R1 of described 14 binary system serial counter IC1, the COUT pin of described 14 binary system serial counter IC1 connects one end of electric capacity C1, described 14 binary system serial counter IC1's
one end of pin contact resistance R2, the other end of described resistance R1 and the other end of electric capacity C1, and the other end of resistance R2 is connected, the Q4 pin of described 14 binary system serial counter IC1 is connected with the clock pins CK of double D trigger IC5 ~ IC16 respectively, and the Q7 pin of described 14 binary system serial counter IC1 is connected with the CLK pin of Johnson counter IC2;
Described Johnson counter IC2's
pin is connected with the Q5 pin of Johnson counter IC2, the RST pin ground connection of described Johnson counter IC2, and the Q0 pin of described Johnson counter IC2 is connected with No. 2 input pins of two input Schmidt trigger IC3;
The negative pole of No. 3 output pin connecting valve diode D1 of described two input Schmidt trigger IC3, the positive pole of described switching diode D1 is connected with No. 6 input pins with No. 5 input pins of two input Schmidt trigger IC4, ground connection after the positive pole serial capacitance C2 of simultaneously described switching diode D1, one end of described slide rheostat RW1 is connected with power supply VCC, is connected after the other end series resistor R3 of described slide rheostat RW1 with the positive pole of switching diode D1;
No. 4 output pins of described two input Schmidt trigger IC4 produce pulse output signals T1, and be connected with the data-out pin D of double D trigger IC5, the equal ground connection of set pin S of described double D trigger IC5 ~ IC16, the equal ground connection of reset pin R of described double D trigger IC5 ~ IC15, the true form output pin Q of described double D trigger IC5 is connected with the data-out pin D of double D trigger IC6, the true form output pin Q of described double D trigger IC6 is connected with the data-out pin D of double D trigger IC7, the true form output pin Q of described double D trigger IC7 is connected with the data-out pin D of double D trigger IC8, the true form output pin Q of described double D trigger IC8 produces pulse output signals T2, and be connected with the data-out pin D of double D trigger IC9, the true form output pin Q of described double D trigger IC9 is connected with the data-out pin D of double D trigger IC10, the true form output pin Q of described double D trigger IC10 is connected with the data-out pin D of double D trigger IC11, the true form output pin Q of described double D trigger IC11 is connected with the data-out pin D of double D trigger IC12, the true form output pin Q of described double D trigger IC12 produces pulse output signals T3, and be connected with the data-out pin D of double D trigger IC13, the true form output pin Q of described double D trigger IC13 is connected with the data-out pin D of double D trigger IC14, the true form output pin Q of described double D trigger IC14 is connected with the data-out pin D of double D trigger IC15, the true form output pin Q of described double D trigger IC15 is connected with the data-out pin D of double D trigger IC16, and the true form output pin Q of described double D trigger IC16 produces pulse output signals T4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419040.4A CN105050264B (en) | 2015-07-17 | 2015-07-17 | LED drives Phaseshift controlling circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419040.4A CN105050264B (en) | 2015-07-17 | 2015-07-17 | LED drives Phaseshift controlling circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105050264A true CN105050264A (en) | 2015-11-11 |
| CN105050264B CN105050264B (en) | 2017-09-12 |
Family
ID=54456329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510419040.4A Expired - Fee Related CN105050264B (en) | 2015-07-17 | 2015-07-17 | LED drives Phaseshift controlling circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105050264B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849915A (en) * | 2016-12-29 | 2017-06-13 | 北京时代民芯科技有限公司 | A kind of programmable clock phase-shift circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201105167A (en) * | 2009-07-22 | 2011-02-01 | Koyo Electronics Ind Co | Method and device for driving light source |
| CN201774514U (en) * | 2010-09-06 | 2011-03-23 | 河北工业大学 | Programmable full-digital phase-shifting dual-narrow pulse trigger |
| CN204859642U (en) * | 2015-07-17 | 2015-12-09 | 云南日昌隆光电科技股份有限公司 | LED drive phase shift control circuit |
-
2015
- 2015-07-17 CN CN201510419040.4A patent/CN105050264B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201105167A (en) * | 2009-07-22 | 2011-02-01 | Koyo Electronics Ind Co | Method and device for driving light source |
| CN201774514U (en) * | 2010-09-06 | 2011-03-23 | 河北工业大学 | Programmable full-digital phase-shifting dual-narrow pulse trigger |
| CN204859642U (en) * | 2015-07-17 | 2015-12-09 | 云南日昌隆光电科技股份有限公司 | LED drive phase shift control circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849915A (en) * | 2016-12-29 | 2017-06-13 | 北京时代民芯科技有限公司 | A kind of programmable clock phase-shift circuit |
| CN106849915B (en) * | 2016-12-29 | 2020-03-27 | 北京时代民芯科技有限公司 | Programmable clock phase shift circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105050264B (en) | 2017-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102740564B (en) | Light emitting diode (LED) driving circuit and control method of LED | |
| CN105050265B (en) | The multigroup constant-current drive circuits of LED | |
| CN103499045B (en) | Use LED string and the manufacture method thereof of constant current-supplying | |
| CN204859642U (en) | LED drive phase shift control circuit | |
| JP5279217B2 (en) | Light emitting element control circuit | |
| CN111028791B (en) | Backlight driver and display device | |
| CN107481661A (en) | The operating method and display device of display device | |
| CN105050264A (en) | LED (Light Emitting Diode) drive phase shift control circuit | |
| CN200976692Y (en) | Serial power supply circuit for LED string | |
| CN201919094U (en) | RGB (red, green and blue) combined color-adjustable indicator lamp circuit and device | |
| CN201016466Y (en) | Electronic equipment | |
| CN204859643U (en) | LED drives application circuit | |
| CN202514101U (en) | Dimming and toning illumination system | |
| CN204859644U (en) | LED multiunit constant -current drive circuit | |
| CN105142280A (en) | Flash lamp dimming driving current control circuit and control method thereof | |
| CN206517632U (en) | A kind of battery case controller of control lamp string | |
| CN107404783A (en) | MANET color lamp device and color lamp system based on the control of power line edge signal | |
| CN211184358U (en) | DC/DC constant current driving device for automobile L ED steering lamp | |
| CN201284950Y (en) | Scanning type LED soft lamp strip | |
| CN211792128U (en) | Colorful lamp plate of low energy consumption | |
| CN206640833U (en) | A kind of tunable optical strip LED module circuit | |
| CN204859646U (en) | LED series connection parameter inspection and accusing circuit | |
| CN204993970U (en) | High power factor drive circuit of well miniwatt LED | |
| CN215734934U (en) | Solar lamp with selectable output circuit | |
| CN211702455U (en) | Lamp control circuit for computer accessories |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190724 Address after: Room 6-401, Cuiping International City, 20 General Avenue, Jiangning Economic and Technological Development Zone, Nanjing, Jiangsu Province Patentee after: Nanjing Yihai Haoming Energy Saving Technology Co., Ltd. Address before: 650217 Yinhe T-PARK Science Park, Jingkai District, Kunming City, Yunnan Province Patentee before: YUNNAN RICHANGLONG PHOTOELECTRIC SCIENCE & TECHNOLOGY CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170912 Termination date: 20200717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |