CN106255273B - The color-temperature regulating chip that can intelligently switch during output open circuit - Google Patents
The color-temperature regulating chip that can intelligently switch during output open circuit Download PDFInfo
- Publication number
- CN106255273B CN106255273B CN201610803602.XA CN201610803602A CN106255273B CN 106255273 B CN106255273 B CN 106255273B CN 201610803602 A CN201610803602 A CN 201610803602A CN 106255273 B CN106255273 B CN 106255273B
- Authority
- CN
- China
- Prior art keywords
- pin
- signal
- output
- input
- termination
- 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.)
- Active
Links
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]
- H05B45/20—Controlling the colour of the light
-
- 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 present invention provides the color-temperature regulating chip that can intelligently switch during a kind of output open circuit, including：One power input pin, a clock signal input pin are CLK pin, and two switching tubes drive pin, an external capacitor pin；One power supply module, to produce internal electric source VDD and reset signal RST；Internal electric source VDD connection external capacitor pin；Zener pipe Z1, to clamper CLK pin voltages；One switch detection module, it inputs termination CLK pin, output end output identification signal OK；For detecting whether the switch in color-temperature regulating chip application circuit turns on；One circular shift register, according to the input that the marking signal OK whether turned on is switched in color-temperature regulating chip application circuit, to select whether output signal S1, S2 puts high level；One drive module is corresponding on two switching tube driving pin to produce SW1, SW2 signal to drive S1, S2 signal.The present invention can solve because a certain paths of LEDs lamp open circuit cause Consumer's Experience effect difference the defects of.
Description
Technical field
The present invention relates to a kind of LED drive circuit, more particularly to a kind of toning temperature controller and drive circuit.
Background technology
On the arena of history of illuminating product, current LED illumination product, people's control are developed into from the incandescent lamp of early stage
The requirement of bright product also gradually changes from simple illumination functions to comfort type, intelligent illumination functions.Last decade, various LED
Technology occurs like the mushrooms after rain, and LED toning temperature techniques are also developed rapidly, wherein switch toning temperature technique is applied because of it
Cost is low, simple to operate and need not transform existing switch lighting system and increasingly attract attention.
Fig. 1 is the rough schematic view of the switch color-temperature regulating LED schemes of prior art, as illustrated, AC is input AC electricity；
K1 is switch on wall；D1~d4 forms rectifier bridge；C0 is filter capacitor, and AC rectification is filtered into direct current together with rectifier bridge
Electricity；IC1 is LED constant current control chip；NP, NS form transformer；MOSFET is power tube；R1 is primary current sampling resistor；
D5 is one-way conduction diode；C1 is output capacitance；IC2 is color-temperature regulating chip；M1, M2 are the controlling switch of two paths of LED lamp
Pipe.
Color-temperature regulating principle：IC2 can detection switch whether turn on.Switch K1 to turn on for the first time, IC2 starts and controls SW1
For height, the first street lamp LED1 is bright, and the second street lamp LED2 goes out；Switch K1 shut-offs, IC2 power down（But internal register can preserve shape
State）, two street lamps go out；When switch K1 is turned on for the second time, SW1 is low, and SW2 is height, and the first street lamp goes out, and the second street lamp is bright；Class according to this
Push away, third time switchs K1 conductings, and two street lamps are bright；No. the 4th switch K1 conducting, it is bright to be returned to the first street lamp.
However, color-temperature regulating LED illumination scheme is in the used time, it is possible to due to certain factor, wherein LED is opened a way all the way
, if it is the first via.When switch K1 is turned in first time, SW1 is height, and SW2 is low, but because LED1 opens a way, LED1 does not work,
Output capacitance C1 voltage can constantly rise, until triggering IC1 OVP（Output over-voltage protection）Function, IC1, which enters, constantly restarts
Pattern, but still without lantern festival it is bright.Only manually second of conducting switch K1, can just be switched to the second street lamp, and point
Bright LED2.For a user, it when being only broken a certain paths of LEDs lamp, might not wish immediately to change fluorescent tube, and be intended to
Enough it is illuminated using an other street lamp, but like this, turn on light every time all must be by switching several times, it appears and it is troublesome, no
Enough intelligence, experience effect are poor.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided can intelligently switch during a kind of output open circuit
Color-temperature regulating chip, can solve in color-temperature regulating scheme, because a certain paths of LEDs lamp open circuit cause Consumer's Experience effect difference the defects of.
The technical solution adopted by the present invention is：
A kind of color-temperature regulating chip that can intelligently switch during output open circuit, including：
One power input pin, a clock signal input pin are CLK pin, and two switching tubes drive pin, an external electricity
Hold pin；
One power supply module, to produce internal electric source VDD and reset signal RST；Internal electric source VDD connection external capacitors
Pin；
Zener pipe Z1, to clamper CLK pin voltages；
One switch detection module, it inputs termination CLK pin, output end output identification signal OK；For detecting color-temperature regulating core
Whether the switch in piece application circuit turns on；
One circular shift register, according to switching the defeated of the marking signal OK that whether turns in color-temperature regulating chip application circuit
Enter, to select whether output signal S1, S2 puts high level；
One drive module, it is corresponding on two switching tube driving pin to produce SW1, SW2 signal to drive S1, S2 signal,
For driving external switching tube.
Specifically,
Power supply module includes resistance R100, R101, diode D101, Zener Z101, electric capacity C100, phase inverter INV101
And INV102；
The power input pin of a resistance R101 termination color-temperature regulating chip, another terminating diode D101 anode, two poles
Pipe D101 negative electrode connecting resistance R100 one end, Zener Z101 negative electrode, and the external capacitor pin of color-temperature regulating chip；Resistance
R100 another termination capacitor C100 positive pole and phase inverter INV101 input；Zener Z101 anode and electric capacity C100
Negative pole ground connection；Phase inverter INV101 output end connects phase inverter INV102 input, and phase inverter INV102 output end is defeated
Go out reset signal RST.
Specifically,
Switching detection module includes and door AND201, AND202, switching tube M200, phase inverter INV201, resistance R201, electricity
Hold C201, d type flip flop DFF1 and DFF2；
With the CLK pin of a door AND201 input termination color-temperature regulating chip, another input terminates reset signal RST,
Output end exports CLK1 signals and connects switching tube M200 grid；A resistance R201 termination internal electric source VDD, another termination are opened
Close pipe M200 drain electrode, electric capacity C201 positive pole and phase inverter INV201 input；Switching tube M200 source ground, electricity
Hold C201 negative pole ground connection；Phase inverter INV201 output termination and a door AND202 input, it is another with door AND202
One input termination reset signal RST, output end output signal R；
D type flip flop DFF1 reset termination signal R, output end QN connects input D ends, d type flip flop DFF1 input end of clock
Connect CLK1 signals；
D type flip flop DFF2 reset termination signal R, d type flip flop DFF2 input end of clock connect the defeated of d type flip flop DFF1
Go out to hold QN；D type flip flop DFF2 input D terminations internal electric source VDD, d type flip flop DFF2 output end Q output identification signals OK；
DFF1 and DFF2 feeder ear meets internal electric source VDD.
Specifically,
The circular shift register, after internal electric source VDD and reset signal RST is produced, input signal OK is for the first time
Uprised by low, output S1 is high level；Input signal OK is uprised by low for the second time, and output S2 is high level；Input signal OK
Uprised three times by low, output S1, S2 are high level；Input signal OK is uprised for the 4th time by low, and output S1 is high level；According to this
Analogize；The reset termination reset signal RST of circular shift register, power supply termination internal electric source VDD.
Advantages of the present invention：Color-temperature regulating chip pins provided by the invention can be realized intelligently to a certain paths of LEDs lamp open circuit
It is switched to other LED all the way to light, without repeatedly switching over by switch.
Brief description of the drawings
Fig. 1 is the LED color-temperature regulating application scheme rough schematic views of prior art.
Fig. 2 is the LED color-temperature regulating chip internal block schematic illustrations of the present invention.
Fig. 3 is the LED color-temperature regulating chip application scheme rough schematic views of the present invention.
Fig. 4 is the LED color-temperature regulating chip coherent signal waveform diagrams of the present invention.
Fig. 5 is to illustrate that switch switching and output OVP two ways produce waveform diagram to CLK pin.
Fig. 6 is the LED color-temperature regulating chip internal power supply module schematic diagrames of the present invention.
Fig. 7 is the LED color-temperature regulatings chip internal switch detection module schematic diagram of the present invention.
Fig. 8 is the LED color-temperature regulating chip application scheme waveform correlation schematic diagrames of the present invention.
Embodiment
With reference to specific drawings and examples, the invention will be further described.
As shown in Fig. 2 the color-temperature regulating chip that can intelligently switch during output open circuit provided by the invention, including：
One power input pin（VCC pin in Fig. 2）, a clock signal input pin is CLK pin, and two switching tubes drive
Pin（The pin that SW1 with SW2 signals in Fig. 2 connect）, an external capacitor pin（VDD pin in Fig. 2）；
One power supply module, to produce internal electric source VDD and reset signal RST；Internal electric source VDD connection external capacitors
Pin；
Zener pipe Z1, to clamper CLK pin voltages；
One switch detection module, it inputs termination CLK pin, output end output identification signal OK；For detecting color-temperature regulating core
Whether the switch in piece application circuit turns on；
One circular shift register, the marking signal OK input whether turned on according to switch, come select output signal S1,
Whether S2 puts high level；After internal electric source VDD and reset signal RST is produced, input signal OK is uprised by low for the first time, is exported
S1 is high level；Input signal OK is uprised by low for the second time, and output S2 is high level；Input signal OK third times are uprised by low,
It is high level to export S1, S2；Input signal OK is uprised for the 4th time by low, and output S1 is high level；The rest may be inferred；Ring shift
The reset terminal of register（Low level is effective）Meet reset signal RST, power supply termination internal electric source VDD；
One drive module, it is corresponding on two switching tube driving pin to produce SW1, SW2 signal to drive S1, S2 signal,
For driving external switching tube.
Application architecture such as Fig. 3 of color-temperature regulating chip provided by the invention.AC is input AC electricity；K1 is switch on wall；d1
~d4 forms rectifier bridge；C0 is filter capacitor, and AC rectification is filtered into direct current together with rectifier bridge；IC1 is LED constant current
Control chip；Armature winding NP, secondary windings NS form transformer；MOSFET is power tube；R1 is primary current sampling resistor；
IC2 is color-temperature regulating chip proposed by the present invention；R2 is IC2 supplying resistance；R3 be IC2 CLK pin detection resistance, the resistance
It is mainly used in current limliting, resistance R3 mono- terminates secondary windings NS, the CLK pin of another termination color-temperature regulating chip；The pole of d5 one-way conductions two
Pipe；C1 is output capacitance；C2 is IC2 internal electric sources VDD plug-in capacitor；M1, M2 are that the control power tube of two paths of LED lamp is
Switching tube.
Operation principle：Conducting switch K1, output capacitance C1 voltage constantly rise for the first time, and are powered by R2 for IC2,
Power supply module produces internal electric source VDD and reset signal RST；Secondary windings NS constantly provides arteries and veins by R3 for CLK pin simultaneously
Ripple is rushed, the impulse wave carries out clamper by the Zener Z1 built in CLK pin, and clamp voltage is suitable with internal electric source vdd voltage；Open
Close after detection module detects continuous impulse wave by CLK pin, output OK signals are uprised by low, circular shift register it is defeated
Go out S1 to uprise, control first via LED is lighted.After switching K1 shut-offs, IC2 internal electric source VDD is due to plug-in capacitor C2 presence
And voltage can be kept for a period of time（Kept for the time of voltage controlled by C2）, circular shift register can work on one section when
Between, and state is preserved, but CLK pin can't detect continuous impulse signal, thus switch the output signal OK step-downs of detection module, ring
All to be low, two paths of LED lamp does not all work two output signals of shape shift register.Second of conducting switch K1, switch detection mould
Block detects continuous impulse signal again, and output signal OK is uprised by low, and circular shift register output S2 is uprised, the second tunnel
LED is lighted；The rest may be inferred, third time conducting switch K1, lights two paths of LED lamp, the 4th conducting switch K1, lights the first via
LED.
Secondary windings NS and the inside coherent signal of color-temperature regulating chip IC 2 waveform diagram such as Fig. 4.Secondary windings NS electricity
Corrugating has just and has negative, and occurrence is larger, but after current-limiting resistance R3 and Zener Z1 clampers, the voltage waveform of CLK pin
High level be Zener breakdown voltage（About 5.8V or so）, minimum is about -0.5V or so, is safe for IC2.Through
Cross after several CLK pulse daleys, OK signals produce, and SW1 signals produce, and the situation of second of switch is analogized.
The color-temperature regulating chip IC 2 of this framework can realize colour temperature handoff functionality, but realize the colour temperature intelligence of output open circuit
Energy handoff functionality, circuit also need to carry out special design.Switch K1 switchings are seen first and output OVP occurs（IC1 output overvoltage
Protection）During two kinds of situations, the respective change of CLK pin waveform, exemplary waveforms are as shown in Figure 5.When switching K1 conductings each time,
CLK pin can receive numerous impulse waveform, and (because IC1 PWM switching frequencies are very high, term is " numerous " herein represents non-
It is often multiple), switch detection module can be carried out judging to switch whether K1 turns in CLK pin after certain delay；And if
In the case that two paths of LED is all opened a way, when OVP occurring every time, current constant control chip IC 1 is in continuous rebooting status, reboot time
About tens to hundreds of milliseconds, the impulse waveform of seldom number can only be received by restarting rear IC1 CLK pin, just can trigger OVP again,
IC1 is restarted.If only first via LED open a way, switch K1 conducting after, IC2 control SW1 for height, conducting M1, but due to
LED1 is opened a way, and lamp does not work, and output voltage rise, until triggering OVP, current constant control chip IC 1 is restarted, by 100 milliseconds of magnitudes
Time, CLK pin receive impulse waveform again, if IC2 switch detection module can only receive several arteries and veins in CLK pin
Output identification signal OK is allowed under conditions of punching to uprise, then SW2 is uprised, and the second paths of LEDs lamp is lighted, and holds output voltage,
Will not be again because first via LED open circuits cause OVP；So power source design is achieved that the colour temperature of output open circuit intelligently switches,
And without repeatedly pressing switch on wall K1, user can obtain preferable experience effect.Conducting switch K1 for the first time, if first via LED
Lamp is opened a way, and can be intelligently switched into addition LED all the way and be lighted.
Color-temperature regulating chip provided by the invention can realize that output open circuit colour temperature intelligently switches well.
Fig. 6 shows the power supply module structural representation of color-temperature regulating chip of the present invention；Including resistance R100, R101, two poles
Pipe D101, Zener Z101, electric capacity C100, phase inverter INV101 and INV102；
The power input pin of a resistance R101 termination color-temperature regulating chip（VCC pin）, another terminating diode D101 sun
Pole, diode D101 negative electrode connecting resistance R100 one end, Zener Z101 negative electrode, and the external capacitor of color-temperature regulating chip
Pin（VDD pin in Fig. 2）；Resistance R100 another termination capacitor C100 positive pole and phase inverter INV101 input；Zener
Pipe Z101 anode and electric capacity C100 negative pole ground connection；Phase inverter INV101 output end connects phase inverter INV102 input,
The reset signal RST of phase inverter INV102 output end output circular shift register；Power supply VCC passes through resistance R1101 and two
The plug-in capacitor (C2 in Fig. 3) that pole pipe D101 is internal electric source VDD charges, and internal electric source VDD enters further through Zener Z101
Row clamper, it is the reset signal of circular shift register that VDD obtains reset signal RST, RST after R100, C100 delay, interior
Exemplary waveforms in portion power vd D and RST relations such as Fig. 6, RST is by one section of delay followed by internal electric source VDD.
Fig. 7 is the schematic diagram of switch detection module internal structure, including with door AND201, AND202, it is switching tube M200, anti-
Phase device INV201, resistance R201, electric capacity C201, d type flip flop DFF1 and DFF2；
With the CLK pin of a door AND201 input termination color-temperature regulating chip, another input terminates reset signal RST,
Output end exports CLK1 signals and connects switching tube M200 grid；A resistance R201 termination internal electric source VDD, another termination are opened
Close pipe M200 drain electrode, electric capacity C201 positive pole and phase inverter INV201 input；Switching tube M200 source ground, electricity
Hold C201 negative pole ground connection；Phase inverter INV201 output termination and a door AND202 input, it is another with door AND202
One input termination reset signal RST, output end output signal R；
D type flip flop DFF1 reset terminal（Low level is effective）Signal R is met, output end QN meets input D ends, d type flip flop DFF1
Input end of clock connect CLK1 signals；D type flip flop DFF2 reset terminal（Low level is effective）Meet signal R, d type flip flop DFF2 when
Clock inputs the output end QN for meeting d type flip flop DFF1；D type flip flop DFF2 input D termination internal electric source VDD, d type flip flop
DFF2 output end Q output identification signals OK；DFF1 and DFF2 feeder ear meets internal electric source VDD；
During CLK pin no pulse waveforms, i.e. CLK is permanent to be low, then signal R is low, and signal R is answering for trigger DFF1, DFF2
Position signal, when R is low, mark OK signals are low；
Once CLK pin receive impulse waveform, CLK1 pin pulse signals uprise, switching tube M200 conductings, electric capacity C201 electricity
Pressure drags down rapidly, and signal R is changed into high level；
When the voltage step-down of CLK pin pulse signals, M200 shut-offs, VDD is charged by resistance R201 to electric capacity C201, here
R201 and C201 value is sufficiently large, ensure CLK pin between the low period of impulse wave, C201 voltages will not be raised to it is sufficiently high,
Therefore INV201 will not be overturn, and at this moment signal R is still high level.That is R201 and C201 is rationally designed, ensures that CLK ends have
During pulse signal, signal R is high level；During CLK pin pulse-free signals, signal R is low level.
For DFF1 and DFF2, ensure CLK pin when there is pulse signal, it is defeated in CLK second rising edge of pulse signal
Go out signal OK and become high level.The structure is for CLK pulses letter caused by CLK pulse signals caused by switch switching and output OVP
It number can be detected, realize the switching of colour temperature.
Fig. 8 gives the waveform diagram of the main signal of color-temperature regulating application scheme of the present invention.Target is on schematic diagram
2nd, tertiary switch conducting control colour temperature switching, according to analysis above, OVP, which occurs, in certain all the way in fact can also control colour temperature to switch.
For the first time after switch k1 conductings, secondary windings NS immediately produces impulse waveform；CLK pin produce impulse waveform simultaneously；Internal electric source
VDD slowly rises, and to 5.8V, RST signal produces, and follows VDD；Hereafter OK signals are produced, and SW1 is produced.Switch K1 shut-offs
Afterwards, the pulse of secondary windings NS and CLK pin disappears, and internal electric source VDD continues to one section due to plug-in capacitor C2 presence
Time, RST signal follow VDD.After second of switch conduction, OK signals are controlled in second rising edge time-varying high level of CLK pin
SW2 processed is uprised；The rest may be inferred.
Claims (1)
- A kind of 1. color-temperature regulating chip that can intelligently switch during output open circuit, it is characterised in that including：One power input pin, a clock signal input pin are CLK pin, and two switching tubes drive pin, an external capacitor pin；One power supply module, to produce internal electric source VDD and reset signal RST；Internal electric source VDD connection external capacitor pin；Zener pipe Z1, to clamper CLK pin voltages；One switch detection module, it inputs termination CLK pin, output end output identification signal OK；Should for detecting color-temperature regulating chip Whether turned on the switch in circuit；One circular shift register, according to the input that the marking signal OK whether turned on is switched in color-temperature regulating chip application circuit, To select whether output signal S1, S2 puts high level；One drive module, it is corresponding on two switching tube driving pin to produce SW1, SW2 signal to drive S1, S2 signal, it is used for Drive external switching tube；Power supply module includes resistance R100, R101, diode D101, Zener Z101, electric capacity C100, phase inverter INV101 and INV102；The power input pin of a resistance R101 termination color-temperature regulating chip, another terminating diode D101 anode, diode D101 negative electrode connecting resistance R100 one end, Zener Z101 negative electrode, and the external capacitor pin of color-temperature regulating chip；Resistance R100 another termination capacitor C100 positive pole and phase inverter INV101 input；Zener Z101 anode and electric capacity C100 Negative pole ground connection；Phase inverter INV101 output end connects phase inverter INV102 input, and phase inverter INV102 output end is defeated Go out reset signal RST；Switching detection module includes and door AND201, AND202, switching tube M200, phase inverter INV201, resistance R201, electric capacity C201, d type flip flop DFF1 and DFF2；With the CLK pin of a door AND201 input termination color-temperature regulating chip, another input termination reset signal RST, output End output CLK1 signals simultaneously connect switching tube M200 grid；A resistance R201 termination internal electric source VDD, another termination switching tube The input of M200 drain electrode, electric capacity C201 positive pole and phase inverter INV201；Switching tube M200 source ground, electric capacity C201 negative pole ground connection；Phase inverter INV201 output termination and a door AND202 input, it is another with door AND202 Individual input termination reset signal RST, output end output signal R；D type flip flop DFF1 reset termination signal R, output end QN connects input D ends, and d type flip flop DFF1 input end of clock connects CLK1 signals；D type flip flop DFF2 reset termination signal R, d type flip flop DFF2 input end of clock connect d type flip flop DFF1 output end QN；D type flip flop DFF2 input D terminations internal electric source VDD, d type flip flop DFF2 output end Q output identification signals OK；DFF1 and DFF2 feeder ear meets internal electric source VDD；The circular shift register, after internal electric source VDD and reset signal RST is produced, marking signal OK is for the first time by low Uprise, output S1 is high level；Marking signal OK is uprised by low for the second time, and output S2 is high level；Marking signal OK third times Uprised by low, output S1, S2 are high level；Marking signal OK is uprised for the 4th time by low, and output S1 is high level；Class according to this Push away；The reset termination reset signal RST of circular shift register, power supply termination internal electric source VDD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610803602.XA CN106255273B (en) | 2016-09-05 | 2016-09-05 | The color-temperature regulating chip that can intelligently switch during output open circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610803602.XA CN106255273B (en) | 2016-09-05 | 2016-09-05 | The color-temperature regulating chip that can intelligently switch during output open circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106255273A CN106255273A (en) | 2016-12-21 |
| CN106255273B true CN106255273B (en) | 2018-04-10 |
Family
ID=57599406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610803602.XA Active CN106255273B (en) | 2016-09-05 | 2016-09-05 | The color-temperature regulating chip that can intelligently switch during output open circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106255273B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793324B (en) * | 2017-01-04 | 2019-03-05 | 上海晶丰明源半导体股份有限公司 | Switch toning temperature controller and method, LED constant current drive system |
| CN107333356B (en) * | 2017-08-01 | 2023-07-14 | 广东励晶智能照明有限公司 | Dimming device and dimming system |
| DE102017122014A1 (en) * | 2017-09-22 | 2019-03-28 | Osram Opto Semiconductors Gmbh | Arrangement for operating optoelectronic semiconductor chips and display device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201884990U (en) * | 2010-10-27 | 2011-06-29 | 漳州灿坤实业有限公司 | LED (light-emitting diode) lamp utilizing switch to adjust light |
| TWI583245B (en) * | 2012-10-05 | 2017-05-11 | 通嘉科技股份有限公司 | Led drivers and led driving methods therefor |
| CN103745691B (en) * | 2013-11-29 | 2015-12-02 | 深圳市华星光电技术有限公司 | Backlight drive circuit and liquid crystal indicator |
| CN103702480B (en) * | 2013-12-16 | 2016-04-20 | 生迪光电科技股份有限公司 | LED drive circuit and the method in conjunction with mains switch change glow color thereof |
| CN104219840B (en) * | 2014-08-27 | 2017-05-10 | 深圳市芯飞凌半导体有限公司 | LED switch color temperature regulation controller and LED drive circuit |
| CN105007662A (en) * | 2015-07-30 | 2015-10-28 | 深圳市芯飞凌半导体有限公司 | LED light and dual power supply switch color temperature tuning control circuit thereof |
| CN206024175U (en) * | 2016-09-05 | 2017-03-15 | 无锡硅动力微电子股份有限公司 | The color-temperature regulating chip that intelligently can switch during output open circuit |
-
2016
- 2016-09-05 CN CN201610803602.XA patent/CN106255273B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106255273A (en) | 2016-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104535854B (en) | LED driving device, controller thereof and dimming mode detection method | |
| CN106105396B (en) | The controllable electric power of LED (light emitting diode) string drivings | |
| CN104219840B (en) | LED switch color temperature regulation controller and LED drive circuit | |
| CN103947290B (en) | Circuit arrangement for operating a low- power lighting unit and method operating the same | |
| CN105611684B (en) | A kind of circuit and light fixture that light modulation is realized using power switch | |
| CN103298195A (en) | Power supply for illumination and luminaire | |
| CN102595696A (en) | Semiconductor light-emitting element lighting device and illumination fixture using the same | |
| CN106028567B (en) | A kind of emergency lighting circuit and emergency light | |
| CN104883799B (en) | Control method, control circuit, system and LED lamp for LED driving | |
| CN106255273B (en) | The color-temperature regulating chip that can intelligently switch during output open circuit | |
| CN103702480A (en) | LED (Light-Emitting Diode) driving circuit and emitted light color changing method through LED driving circuit in combination with power switch | |
| CN106341925A (en) | LED driving chip, LED driving power supply system capable of adjusting color temperature, and LED lamp | |
| CN107135572B (en) | Sense light | |
| EP2282616A1 (en) | High-voltage discharge lamp operation device and illumination instrument | |
| CN111090016A (en) | Silicon controlled rectifier dimmer detection device, circuit and detection method thereof | |
| CN105704855A (en) | Induction lamp and driving method thereof | |
| CN104303599A (en) | Lighting device and illumination device | |
| CN103025021B (en) | Step-down light emitting diode (LED) drive circuit based on electrical inductance discharge time modulation | |
| US9642199B2 (en) | LED driver circuit and electronic device | |
| CN206024175U (en) | The color-temperature regulating chip that intelligently can switch during output open circuit | |
| CN204993967U (en) | LED light and two switch transfer colour temperature control circuit thereof | |
| CN206963154U (en) | By the control circuit for detecting power switch action regulation light-source brightness | |
| CN111148307B (en) | Intelligent lamp, standby control method thereof and intelligent lighting system | |
| CN209693092U (en) | A kind of LED straight tube lamp illuminating system | |
| CN103298188A (en) | Non-capacitance and non-inductance LED driving method |
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 |