CN205596408U - Transfer colour temperature control circuit - Google Patents

Transfer colour temperature control circuit Download PDF

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Publication number
CN205596408U
CN205596408U CN201620410899.9U CN201620410899U CN205596408U CN 205596408 U CN205596408 U CN 205596408U CN 201620410899 U CN201620410899 U CN 201620410899U CN 205596408 U CN205596408 U CN 205596408U
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CN
China
Prior art keywords
input
mux2
output
selector
termination
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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.)
Expired - Fee Related
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CN201620410899.9U
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Chinese (zh)
Inventor
涂才根
黄飞明
赵文遐
励晔
朱勤为
吴霖
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WUXI SI-POWER MICRO-ELECTRONICS Co Ltd
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WUXI SI-POWER MICRO-ELECTRONICS Co Ltd
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Priority to CN201620410899.9U priority Critical patent/CN205596408U/en
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Publication of CN205596408U publication Critical patent/CN205596408U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

The utility model provides a transfer colour temperature control circuit, including a power module for produce the power VDD and the clock signal clk of loop counter, loop counter, AND gate AND1, oscillator OSC, not gate INV1, selector MUX1 and MUX2, the messenger of loop counter can termination clock signal clk, an output termination AND gate AND1's input and selector MUX1's first input end, and termination AND gate AND1's another input and selector MUX2's first input end are exported to another, oscillator OSC's messenger can termination AND gate AND1 output, the messenger of oscillator can be produced by AND gate AND1 by EN, the oscillator makes and can EN be when high output pulse square signal, oscillator OSC's output out1 connects selector MUX1's second input, and the output out2 of output out1 after through the opposition of not gate INV1 connects selector MUX2's second input, the utility model discloses can make the intensity balancing of two way LED lamps.

Description

Color-temperature regulating control circuit
Technical field
This utility model relates to LED drive circuit, particularly relates to a kind of color-temperature regulating control circuit.
Background technology
Along with the continuous expansion in LED illumination market, the experience of LED illumination is required more and more higher by people, and various new LED technology are arisen at the historic moment, and LED color-temperature regulating technology is also rapidly developed in recent years.Color-temperature regulating scheme in early days is by using MCU to realize, but scheme is relatively costly.In prior art, switch color-temperature regulating scheme has obtained the consistent favor of client, the most convenient in operation, and without transforming original illuminating switch system.
Fig. 1 is the rough schematic view of the adjustable color temperature LED drive circuit of prior art, as it can be seen, AC is input AC electricity;K1 is switch on wall;D1~d4 forms rectifier bridge;C0 is filter capacitor, together with rectifier bridge, AC rectification is filtered into unidirectional current;IC1 is LED constant current control chip;Former limit NP, secondary NS form transformator;MOSFET is power tube;R1 is primary current sampling resistor;D5, d6 are one-way conduction diode;C3 is output capacitance;IC2 is color-temperature regulating chip;R2, C2 are IC2 power supply circuits;C1 is the storage capacitor of VDD foot;M1, M2 are the control power tube of two paths of LED lamp.
Color-temperature regulating chip IC 2 is internal schematically illustrates two modules, supply module produces power vd D and clock signal clk, VDD provides power supply for cycle counter, and clk provides clock for cycle counter, and two output SW1 and SW2 of cycle counter drive M1 and M2 respectively.
Operation principle: switch K1 conducting for the first time, IC2 starts, and supply module provides power vd D and clock clk for cycle counter, and cycle counter output SW1 is high, and SW2 is low, and the first street lamp is bright, and the second street lamp goes out;Switch OFF, IC2 also power down, clk disappears, and VDD is able to maintain that a period of time due to the existence of outside storage capacitor, interior cycle counter work hold mode during this period of time;Until switching K1 second time conducting, cycle counter obtains second time clock, then output SW1 is low, and SW2 is high, and the first street lamp goes out, and the second street lamp is bright;The rest may be inferred, for the third time switch conduction, and two street lamps are bright;4th switch conduction, is returned to the first street lamp bright.
But, the conduction voltage drop of LED lamp bead is not fixing, even if with a batch of lamp bead, also can be because of the difference of colour temperature, and lamp bead pressure drop is different, say, that cold light LED lamp string is different from the pressure drop of warm light LED string.For single channel lamp bright time, LED current is controlled by current constant control chip IC 1, has same current, same brightness;But for two street lamps the brightest time, IC1 ensure that two-way lamp current sum is fixed, but owing to the conduction voltage drop of at this moment two street lamps is inconsistent, the electric current of this two street lamp there are differences, and user is it can be seen that the brightness of two street lamps is inconsistent, one street lamp is brighter, and another road is the darkest, and experience is poor.
Summary of the invention
In order to overcome prior art defect present in the Consumer's Experience, this utility model provides a kind of color-temperature regulating control circuit, can solve color-temperature regulating technology deficiency on Consumer's Experience so that the luminance proportion of two paths of LED lamp;The technical solution adopted in the utility model is:
A kind of color-temperature regulating control circuit, including a supply module, in order to produce power vd D and clock signal clk of cycle counter;Also include:
Cycle counter and door AND1, agitator OSC, not gate INV1, selector MUX1 and MUX2;
Enable termination clock signal clk of cycle counter, one exports termination and an input of door AND1 and the first input end of selector MUX1, another output termination and another input of door AND1 and the first input end of selector MUX2;
The output enabling termination and door AND1 of agitator OSC, enable EN of agitator is produced by with door AND1, when agitator enable EN is high, exports pulse square wave signal;The output out1 of agitator OSC connects second input of selector MUX1, and output out1 connects second input of selector MUX2 by not gate INV1 output out2 after anti-phase;
The end that selects of selector MUX1 and MUX2 is all connected with and the outfan of door AND1, i.e. selector MUX1 and MUX2 selects signal from the output with door AND1;
During the selection end input low level of selector MUX1 and MUX2, the outfan of selector MUX1 and MUX2 all gates respective first input end, during the selection end input high level of selector MUX1 and MUX2, the outfan of selector MUX1 and MUX2 all gates respective second input.
Further,
The cycle of agitator is less than the retentivity time of eye of human eye.
The utility model has the advantage of: this color-temperature regulating control circuit, needs control two paths of LED lamp simultaneously turn on time, the quick alternate conduction of two paths of LED lamp can be made, persist effect by means of human eye, human eye can not be identified two paths of LED lamp and alternately lighting, and will be considered that two paths of LED lamp is simultaneously bright.And the design within color-temperature regulating control circuit, improve original circuit structure, LED color-temperature regulating application circuit in the most compatible existing Fig. 1, when making again two paths of LED lamp turn on, existing LED constant current control chip IC1 individually controls two paths of LED lamp Zhong mono-tunnel of alternate conduction, so that the LED that two-way is alternately lighted, its electric current is identical, and brightness is identical.
Accompanying drawing explanation
Fig. 1 is LED color-temperature regulating circuit and the rough schematic view of application scheme of prior art.
Fig. 2 is color-temperature regulating control circuit inner frame rough schematic view of the present utility model.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
Fig. 2 is the color-temperature regulating control circuit schematic internal view shown by the present embodiment, including: a supply module, in order to produce power vd D and clock signal clk of cycle counter;
Also include: cycle counter and door AND1, agitator OSC, not gate INV1, selector MUX1 and MUX2;
Enable termination clock signal clk of cycle counter, one exports termination and an input of door AND1 and the first input end of selector MUX1, another output termination and another input of door AND1 and the first input end of selector MUX2;
The output enabling termination and door AND1 of agitator OSC, enable EN of agitator is produced by with door AND1, when agitator enable EN is high, exports pulse square wave signal;The output out1 of agitator OSC connects second input of selector MUX1, and output out1 connects second input of selector MUX2 by not gate INV1 output out2 after anti-phase;
Selector MUX1 and MUX2 select end be all connected with and the outfan of door AND1, i.e. selector MUX1 and MUX2 select signal from the output with door AND1, namely enable EN of agitator;
During the selection end input low level of selector MUX1 and MUX2, the outfan of selector MUX1 and MUX2 all gates respective first input end, during the selection end input high level of selector MUX1 and MUX2, the outfan of selector MUX1 and MUX2 all gates respective second input.
Outfan SW1 and SW2 of two selector MUX1 and MUX2, for controlling two paths of LED lamp respectively, circuit that can be the most identical controls power tube M1, M2 by two respectively and connects two paths of LED lamp.
Operation principle of the present utility model below described in two kinds of situation:
The first, turning on situation, the output of cycle counter or A=1, B=0, or A=0, B=1 for single LED lamp, be now output as 0 with door AND1, agitator OSC does not works.For two selectores, when selecting signal S=0, output selects A1 end (first input end), it can be seen that the A1 end of two selectores connects two outfans of cycle counter.For this situation, like the prior art, reality is controlled two paths of LED lamp by the two of cycle counter outfans, but at this moment an only street lamp can be bright.
The second, for two street lamps the brightest time, two outputs A=1, B=1 of cycle counter, also being high level with door AND1 output, say, that the enable signal EN of agitator OSC is high level, agitator OSC works, output out1, out2 signal, for two selectores, select signal S to connect and enable EN, high level, A2 end (the second input) is all selected in so output of two selectores, selects out1 and out2 signal the most respectively.Out1 and out2 is mutually opposing signal, and waveform is illustrated out at Fig. 2, out1 and out2 driven two paths of LED lamp, at this moment two paths of LED lamp alternate conduction, and the cycle of alternate conduction was determined by the cycle of agitator.In design, it is only necessary to reasonable by the cycle design of agitator, it is 1ms less than the retentivity time of eye of human eye, the such as cycle of agitator, then two paths of LED lamp was alternately lighted by the cycle of 1ms.Here by means of the effect that persists of human eye, human eye can not be identified two paths of LED lamp and alternately lighting, and will be considered that two paths of LED lamp is simultaneously bright.When two paths of LED lamp is alternately lighted, the bright LED current of any waypoint is all to be controlled by the current constant control chip IC 1 before in Fig. 1, say, that the LED that two-way is alternately lighted, its electric current is identical.User will be considered that two street lamps are lighted simultaneously, and brightness is identical.
In sum, the most compatible existing LED color-temperature regulating technology of this color-temperature regulating control circuit, the problem that poor user experience can be solved well again.
Description of the present utility model and application are illustrative, not as scope of the present utility model being limited in the above-described embodiments.The deformation of embodiment here and change are possible, all those skilled in the art according to design of the present utility model by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in the range of this utility model.

Claims (1)

1. a color-temperature regulating control circuit, including a supply module, in order to produce power vd D and clock signal clk of cycle counter;It is characterized in that, also include:
Cycle counter and door AND1, agitator OSC, not gate INV1, selector MUX1 and MUX2;
Enable termination clock signal clk of cycle counter, one exports termination and an input of door AND1 and the first input end of selector MUX1, another output termination and another input of door AND1 and the first input end of selector MUX2;
The output enabling termination and door AND1 of agitator OSC, enable EN of agitator is produced by with door AND1, when agitator enable EN is high, exports pulse square wave signal;The output out1 of agitator OSC connects second input of selector MUX1, and output out1 connects second input of selector MUX2 by not gate INV1 output out2 after anti-phase;
The end that selects of selector MUX1 and MUX2 is all connected with and the outfan of door AND1, i.e. selector MUX1 and MUX2 selects signal from the output with door AND1;
During the selection end input low level of selector MUX1 and MUX2, the outfan of selector MUX1 and MUX2 all gates respective first input end, during the selection end input high level of selector MUX1 and MUX2, the outfan of selector MUX1 and MUX2 all gates respective second input.
CN201620410899.9U 2016-05-04 2016-05-04 Transfer colour temperature control circuit Expired - Fee Related CN205596408U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620410899.9U CN205596408U (en) 2016-05-04 2016-05-04 Transfer colour temperature control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620410899.9U CN205596408U (en) 2016-05-04 2016-05-04 Transfer colour temperature control circuit

Publications (1)

Publication Number Publication Date
CN205596408U true CN205596408U (en) 2016-09-21

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Application Number Title Priority Date Filing Date
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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105764201A (en) * 2016-05-04 2016-07-13 无锡硅动力微电子股份有限公司 Color temperature adjusting control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105764201A (en) * 2016-05-04 2016-07-13 无锡硅动力微电子股份有限公司 Color temperature adjusting control circuit

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20160921

Termination date: 20180504