CN207854219U - LED switch color-temperature regulating controls chip and LED illumination lamp - Google Patents
LED switch color-temperature regulating controls chip and LED illumination lamp Download PDFInfo
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- CN207854219U CN207854219U CN201721555382.XU CN201721555382U CN207854219U CN 207854219 U CN207854219 U CN 207854219U CN 201721555382 U CN201721555382 U CN 201721555382U CN 207854219 U CN207854219 U CN 207854219U
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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
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- 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]
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Abstract
The utility model is related to a kind of LED switch color-temperature regulating control chip and LED illumination lamps.Wherein LED switch color-temperature regulating control chip includes：Power detecting and control signal generating circuit, logical status control circuit, driving circuit and in-line power circuit；Wherein, the logical status control circuit includes：State information storage unit, state be temporary and switch unit and control unit；When detecting that power input switch disconnects the time interval being closed more than the first scheduled duration, the control chip is directly entered the logic state before power input switch disconnects.Implement the utility model, after liked state is switched in user, the state for control chip of turning on light every time later is exactly the state before turning off the light last time, without again through switching.Have the advantages that simple, convenient, user experience is promoted.
Description
Technical field
The utility model is related to field of LED illumination, more specifically to a kind of LED switch color-temperature regulating control chip and
LED illumination lamp.
Background technology
With the continuous expansion of LED illumination application range, LED illumination is also from best single illumination functions gradually to intelligence
Change, hommization and energy saving direction development.In order to meet people under different scenes to the requirement of light, has switch color-temperature regulating work(
The LED illumination lamp of energy is come into being.Current existing color-temperature regulating scheme is regardless of using MCU or a kind of existing control chip
The color-temperature regulating scheme of realization, is all extremely complex, and an independent detection circuit is required for examine input switch action
It surveys.Complicated circuit not only causes the cost of driving power to increase, and the volume of driving power can be caused to increase, this is to LED
Popularization be unfavorable.
It reduces the cost of driving power and reduces volume and be necessary, such as the schemes such as bulb lamp and shot-light,
Volume and cost are vital.In addition, it is also a problem needed to be considered that user's operation is convenient.
Existing most common twin-power switch color-temperature regulating scheme controls chip as shown in Figure 1, switching color-temperature regulating in the program
108 are detected input waveform 101 by CLK feet, to judge the state of input switch 100, and according to input switch 100
State to the double constant-current supply systems of control 110 state.Double constant-current supply systems 110 are really two individual constant currents
LED drive power, each constant current LED driving power source are controlled by a LED drive chip, opening in scheme as shown in Figure 1
The P1 feet and P2 feet for closing color-temperature regulating control chip are exactly the supply pin with two driving chips in double constant-current supply systems respectively
It is connected, the opening and closing for controlling driving chip.
Scheme as shown in Figure 1 can only realize switch toning temperature function, that is, state can only keep one section very short after powering off
Time, because state retention time is determined by the size of capacitance 107.After input switch 100 disconnects, switch color-temperature regulating controls core
Piece 108 is powered by the energy in capacitance 107, switchs what color-temperature regulating control chip 108 was kept after the energy in capacitance 107 discharges
State disappears, and returns to original state.That is, using this kind of chip, LED illumination lamp will be returned when turning on light every time
To the original state of acquiescence, and the original state of this acquiescence may not be the state that user likes.Therefore, user needs again
The state that it is liked is switched to by switching, it is possible to be needed multiple switching action that can just switch to its state liked, be grasped
Make cumbersome, makes troubles for user, seriously affect the user experience of LED lamp.
Utility model content
The technical problem to be solved by the present invention is to when turning on light all every time for the LED illumination lamp of the prior art
The reset condition of acquiescence can be restored to, user needs the open-close action by switching gradually to switch to its state liked,
Cumbersome defect, provide a kind of LED switch color-temperature regulating control chip, include LED switch color-temperature regulating control chip LED
Illuminator and LED switch color-temperature regulating control method.
Technical solution adopted by the utility model to solve its technical problems is：Construct a kind of LED switch color-temperature regulating control
Chip, including,
Power detecting for detecting power supply signal, being generated according to the power supply signal and export control signal and control letter
Number generation circuit；
Logical status control circuit for exporting logic state information according to the control signal received, when electricity
It is defeated that the time interval of source input switch open-close so that the control chip is directly entered power supply when being more than the first scheduled duration
Enter the logic state before switch disconnects；
For according to the logic state information output drive signal that receives to turn on and off the power supply of corresponding LED
The driving circuit of power supply；And
In-line power circuit for providing working power for each circuit of the control chip interior.
In LED switch color-temperature regulating described in the utility model controls chip,
The logical status control circuit includes：
For being remained able to after storing the logic state information after the control chip interior logic state is stablized and power-off
Keep the state information storage unit of data；
With the state of state storage unit communication connection is temporary and switch unit；And
With the control unit that the state information storage unit and state be temporary and switch unit is connect, according to the control
Signal processed executes following operation：
It controls the state information storage unit and state is temporary and switch unit alternative one is defeated to the driving circuit
Go out the logic state information for storing or keeping in；
It controls the state information storage unit and the logic state information stored is sent to state is temporary and switching is single
It is kept in member, or the control state is temporary and kept in logic state information is sent to status information and stored by switch unit
It is stored in unit；And
Control that the state is temporary and switch unit switches to next logic state and keeps in next logic state
Logic state information.
In LED switch color-temperature regulating described in the utility model controls chip,
The power detecting and control signal generating circuit include：
Switch input signal detection circuit, input terminal connects the CLK feet of chip, and output first is defeated according to testing result
Go out signal and the second output signal；
VDD power on detection circuit, input terminal are connected to the VDD power output ends of the in-line power circuit, and according to
Testing result exports VDD testing result signals；
VCC power on detection circuit, input terminal are connected to the VCC power output ends of the in-line power circuit, and according to
Testing result exports VCC testing result signals；
First control signal generation circuit, according to the first output signal of the switch input signal detection circuit, VDD
The VDD testing results signal of power on detection circuit output and the VCC testing result signals of VCC power on detection circuit output generate the
One control signal；
Second control signal generation circuit is generated according to the second output signal of the switch input signal detection circuit
Second control signal；
Third controls signal generating circuit, according to the first output signal of the switch input signal detection circuit, VDD
The output signal of power on detection circuit and the output signal of VCC power on detection circuit generate third and control signal；And
4th control signal generating circuit, generates according to the first output signal of the switch input signal detection circuit
4th control signal.
In LED switch color-temperature regulating described in the utility model controls chip,
Described control unit includes：
First switch circuit, be arranged the state is temporary and the output end of switch unit and status information storage it is single
Between the input terminal of member, under the control of the 4th control signal by the state is temporary and what switch unit was kept in patrols
It collects status information and is sent to the state information storage unit；
Second switch circuit, be arranged the state is temporary and input terminal to the status information of switch unit store it is single
Between the output end of member, with the logic for being stored the state information storage unit under the control of the first control signal
Status information is sent to that the state is temporary and switch unit；
The input terminal in the output end and the driving circuit of the state information storage unit is arranged in third switching circuit
Between, with the logic shape stored to driving circuit output state information memory cell under the control of the first control signal
State information；
4th switching circuit is arranged the state is temporary and the input of the output end and the driving circuit of switch unit
Between end, under the control that the third controls signal to driving circuit output state is temporary and what switch unit was kept in patrols
Collect status information.
In LED switch color-temperature regulating described in the utility model controls chip,
The first control signal generation circuit, second control signal generation circuit, third control signal generating circuit and
4th control signal generating circuit is by the first delay circuit, the second delay circuit, third delay circuit and door and rest-set flip-flop structure
At；
Wherein,
The output end of VDD power on detection circuit and VCC power on detection circuit is separately connected with two input terminals of door, it is defeated
Outlet connects the first input end of the rest-set flip-flop；
The input terminal of first delay circuit connects the first output signal end of the switch input signal detection circuit,
The 4th control signal is exported to control the on/off of first switch circuit；
The input terminal of second delay circuit connects the first output signal end of the switch input signal detection circuit,
Output end connects the second input terminal of the rest-set flip-flop；
First output end Q of the rest-set flip-flop exports the first control signal, second output terminalExport described
Three control signals；
The input terminal of third delay circuit connects the second output signal end of the switch input signal detection circuit, defeated
Go out second control signal to the state is temporary and switch unit.
In LED switch color-temperature regulating described in the utility model controls chip,
The state information storage unit is EEprom storage units；
The state is temporary and switch unit is internal register.
In LED switch color-temperature regulating described in the utility model controls chip,
The in-line power circuit includes：
For providing VCC electricity for the power detecting and control signal generating circuit, EEprom storage units, driving circuit
The VCC power output ends in source；And
VDD power output ends for providing VDD power supplys for the internal register.
The utility model solves another technical solution used by its technical problem：A kind of LED illumination lamp is constructed, is wrapped
It includes：The two groups of LED and LED power supplies connected to it of different-colour, and LED switch color-temperature regulating as described above control core
Piece.
In LED illumination lamp described in the utility model, the VDD feet of the LED switch color-temperature regulating control chip pass through
Storage capacitor is grounded.
In LED illumination lamp described in the utility model,
The LED power supplies are double constant-current supplies, the CLK foot connecting valves of the LED switch color-temperature regulating control chip
Between rectification circuit, the first control terminal and the second control terminal of the LED switch color-temperature regulating control chip and double constant currents
The supply pin of power supply connects；Alternatively,
The LED power supplies are isolation inverse-excitation type switch power-supply, the CLK feet of the LED switch color-temperature regulating control chip
It is connected to the output end of isolation inverse-excitation type switch power-supply, the first control terminal and second of the LED switch color-temperature regulating control chip
Control terminal is connect with first group of LED and second group of LED respectively；Alternatively,
The LED power supplies are step down switching regulator, the CLK feet connection of the LED switch color-temperature regulating control chip
In the output end of step down switching regulator, the first control terminal and the second control terminal point of the LED switch color-temperature regulating control chip
It is not connect with first group of LED and second group of LED.
Implement the utility model, has the advantages that：Due to the utility model LED switch color-temperature regulating control chip tool
It is useful for storing the state information storage unit of the logic state information after the control chip interior logic state is stablized,
It is maintained to data after a loss of power, it can state of last when turning off the light；And when power input switchs open-close
Time interval be more than the first scheduled duration when logical status control circuit make control chip be directly entered power input switch
Logic state before disconnection, i.e., after being switched to liked state in user, the state for control chip of turning on light every time later is exactly
Last time turn off the light before state, without again through switching.Have the advantages that simple, convenient, the user experience is improved.
In addition, the utility model LED switch color-temperature regulating control chip due to by power detecting and control signal generating circuit, logic state
Control circuit, driving circuit, in-line power circuit etc. are integrated on a single die, can reduce the volume of driving power, reduce
Cost.
In addition, in the embodiments of the present invention, in-line power circuit includes that VDD power output ends and VCC power supplys are defeated
Outlet, it is temporary and switch unit, the purpose designed in this way are to the state that VDD power output ends are exclusively used in providing VDD power supplys
In the case that power input switch disconnects, the current loss of VDD feet is minimum, so a VDD capacitance compared with low capacity can
To be kept for the sufficiently long time.
In the embodiments of the present invention, LED switch color-temperature regulating controls chip and also specially starts and continuous each
The information in internal register is re-written in state information storage unit after work a period of time, ensures status information storage
Information in unit will not lose.Meanwhile it can be made with extending it to avoid being continually written and read to state information storage unit
Use the service life.So that as soon as the 4th control signal s60ms delays is controlled signal yw_ at least predetermined time intervals in third in design,
System logic is in stable condition when being to ensure the write information into state information storage unit.
Description of the drawings
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing：
Fig. 1 is the schematic diagram of existing LED twin-power switch toning temperature control circuit；
Fig. 2 is the structural schematic diagram of the utility model LED switch toning temperature control circuit first embodiment, wherein using double
Constant-current supply；
Fig. 3 is the circuit block diagram of the utility model LED switch color-temperature regulating control chip first embodiment；
Fig. 4 is the circuit block diagram of the utility model LED switch color-temperature regulating control chip second embodiment；
Fig. 5 is the circuit diagram of the utility model LED switch color-temperature regulating control chip 3rd embodiment；
Fig. 6 is the waveform correlation figure that the control chip of LED switch color-temperature regulating shown in Fig. 5 powers on for the first time；
Waveform correlation figure when Fig. 7 is the control chip normal work of LED switch color-temperature regulating shown in Fig. 5；
Fig. 8 is the structural schematic diagram of the utility model LED switch toning temperature control circuit second embodiment, wherein using anti-
Excitation type switch power-supply；
Fig. 9 is the structural schematic diagram of the utility model LED switch toning temperature control circuit 3rd embodiment, wherein using drop
Pusher-type switch power supply；
Figure 10 is the flow chart of the utility model LED switch color-temperature regulating control method；
Figure 11 is the flow chart according to the LED switch color-temperature regulating control method of one embodiment of the utility model.
Specific implementation mode
The utility model conceives a kind of completely new LED color temperature adjustment schemes, as shown in Fig. 2, in the utility model LED switch
In temperature control circuit first embodiment of mixing colours, it is also to pass through CLK feet to input switch 200 that LED switch color-temperature regulating, which controls chip 208,
Output end waveform 201 be detected, and the state of input switch 200 is judged according to waveform 201.Due to input switch 200
Output end voltage be several hectovolts high pressure, so a resistance of connecting between CLK feet and the output end of input switch 200
203.The power supply that LED switch color-temperature regulating controls chip 208 is outputs of the supply pin VCC by a resistance 207 and rectifier bridge 202
Anode is connected, and the external storage capacitor of VDD feet (being also known as VDD capacitances) 206 of LED switch color-temperature regulating control chip 208 arrives
Ground, the VDD capacitances 206 being connected with the VDD feet of LED switch color-temperature regulating control chip 208 are used for during input switch 200 disconnects
It powers to LED switch color-temperature regulating control chip 208.The output end of rectifier bridge 202 filter capacitor 204 in parallel.LED switch is mixed colours
The P1 and P2 of temperature control coremaking piece 208 are connected with the supply pin of two power supply control chips in double constant-current supply systems 209, are used for
Control the opening and closing of power supply control chip.In some embodiments, it is pull-down circuit inside P1 and P2, it is double when needing to close
Some power supply in constant-current supply system 209, it is only necessary to by internal pull-down circuit the power supply of corresponding power supply control chip
Foot drags down.
Under normal circumstances, two constant-current supplies are respectively used to LED lamp bead (the white lamp bead and yellow of two colour temperatures of driving
Lamp bead), the most basic function of LED switch color-temperature regulating control chip 208 is two Constant Electric Currents in the double constant-current supply systems of control
The opening and closing in source, to control the colour temperature of LED light.LED switch color-temperature regulating controls change (the i.e. LED of the state of chip 208
The colour temperature of lamp changes) be to be realized by the switch of input switch, i.e., for example current colour temperature is white, is switched to next
State only needs to disconnect input switch 200, and in predetermined time interval in (such as several seconds, this time and VDD capacitances
Capacity is related with the current loss of VDD feet) input switch 200 is re-closed, control chip 208 will be switched to next shape
State, to which the double constant-current supply systems of control realize the switching of LED colour temperatures, if above-mentioned input switch 200 re-closes the time
It is very long, the time that above-mentioned VDD capacitances can bear is had exceeded, then LED switch color-temperature regulating control chip 208 can keep original
State re-closes the colour temperature that rear LED light keeps original, will not be switched to next state.LED switch color-temperature regulating controls chip
Why 208 can re-close logic state after input switch 200 disconnects some time can also maintain the state of last time
Because remaining able to protect after being built-in with power-off inside LED switch color-temperature regulating control chip 208 when without returning to original state
The state information storage unit of data is held, which is used to record the current state of control chip, due to disconnected
There is the state information storage unit that data are maintained to after electricity power down to protect stored feature, and can keep for a long time,
So the state that can control LED switch color-temperature regulating chip 208 preserves for a long time.Since everyone is to LED colors
The preference of temperature is different, may if all returned to original state after a period of time after input switch 200 disconnects every time
The colour temperature of original state is not the colour temperature that user is liked, and to pass through input switch every time to be transferred to liked colour temperature
200 are switched to the colour temperature oneself liked, and seriously affect the user experience of LED in this way.
Fig. 3 is the circuit block diagram of the utility model LED switch color-temperature regulating control chip first embodiment.As shown in figure 3, this
The LED switch color-temperature regulating of utility model controls chip：
Power detecting and control signal generating circuit 320, for detecting power supply signal, being generated and export according to power supply signal
Control signal.
Logical status control circuit 330, for exporting logic state information according to control signal, and when power input switchs
The time interval of open-close so that LED switch color-temperature regulating control chip is directly entered power supply when being more than the first scheduled duration defeated
Enter the logic state before switch disconnects.Wherein, the first scheduled duration usually depends on the VDD of LED switch color-temperature regulating control chip 208
The current loss size of the amount of capacity and VDD feet of the external VDD capacitances 206 of pin.
Driving circuit 340 receives the logic state information of logical status control circuit output, accordingly output drive signal
To turn on and off the power supply of corresponding LED.And
In-line power circuit 300, each circuit for controlling chip interior for LED switch color-temperature regulating provide working power.
As shown in figure 3, logical status control circuit 330 further comprises：
State information storage unit 308 is used for the logic state letter after storage control chip internal logic states are stablized
Breath, and it is maintained to data after a loss of power.
State is kept in and switch unit 313, is communicated to connect with state information storage unit, under the control of the control unit
Selectively execute following operation：Logic state information is obtained from state information storage unit or believes its temporary logic state
Breath is sent to state information storage unit；And it according to currently temporary logic state information and scheduled logical order, switches to
Next logic state and the logic state information for keeping in next logic state.And
Control unit 331 executes following operation according to control signal：
State of a control information memory cell and state are kept in and switch unit alternative one is stored to driving circuit output
Or the logic state information kept in；
The mutual biography of logic state information between state of a control information memory cell and state be temporary and switch unit；And
State of a control is temporary and switch unit switches to next logic state and keeps in the logic state of next logic state
Information.
In each embodiment of the utility model, EEprom memories, MTP storages can be used in state information storage unit
The memory that long-term preservation information is remained able to after the power-off such as device is realized.State is temporary and internal deposit can be used in switch unit
Device such as d type flip flop, rest-set flip-flop and it is all can in the case of not power down storage circuit/structure of storage state information it is real
It is existing.
Fig. 4 is the circuit block diagram of the utility model LED switch color-temperature regulating control chip second embodiment.As shown in figure 4, should
The LED switch color-temperature regulating control chip of embodiment includes in-line power circuit 300, logical status control circuit 330, driving circuit
340 and power detecting and control signal generating circuit 320.Embodiment is compared as shown in figure 3, the toning temperature control of LED switch shown in Fig. 4
Coremaking piece further illustrates power detecting and controls a kind of specific implementation mode of signal generating circuit 320 comprising switch
Circuit for checking input signals 303, VDD power on detection circuit 302, VCC power on detection circuit 301 and control signal generating circuit
322.Wherein switch input signal detection circuit 303, VDD power on detection circuit 302 and VCC power on detection circuit 301 will detect
Result data is exported to control signal generating circuit 322, is generated control signal by the latter, is sent to logical status control circuit
Control circuit 331 in 330.
In each embodiment of the utility model, in-line power circuit 300 includes VDD power output ends and VCC power supplys
Output end.Preferably, in some embodiments of the utility model, VDD power output ends are only that state is temporary and switching is single
Member 313 provides VDD power supplys as its working power, to reduce the current loss of VDD feet so that electric using the VDD compared with low capacity
The state letter that required state is temporary and switch unit 313 is temporary can be maintained after power input is switched and disconnected by holding 206
The retention time of breath.And other circuits of chip interior, such as power detecting and control signal generating circuit, status information storage
Unit, driving circuit etc. provide VCC power supplys as working power by VCC power output ends.
It should be noted that in the embodiments of the present invention, the generation that controls signal can realize by hardware circuit,
It can be realized by software or software and hardware combining.
In the embodiment of software and hardware combining, power supply signal is detected by detection circuit, by signal generating circuit (such as signal
Generate chip) in the control program installed disconnection, closure and the disconnected open-close of power input switch 200 are judged according to power supply signal
Whether the time interval of conjunction is more than the first scheduled duration, and generates and export corresponding control signal according to judging result.Specifically
Ground：
When judging that power input switch is closed and the time interval of open-close is more than the first scheduled duration, generate and defeated
Go out first control signal yw, to state of a control information memory cell to driving circuit export stored logic state information,
The logic state information stored is sent to during state is temporary and switch unit and keeps in by state of a control information memory cell simultaneously.
When judging power input switch disconnection, second control signal cli is generated and exported, keeps in and cuts to state of a control
Unit is changed to switch to next logic state and keep in the logic state information of next logic state.
When the time interval of judgement power input switch closure and open-close is less than or equal to the first scheduled duration, generation
And output third controls signal yw_, is kept in state of a control and switch unit exports the logic shape kept in driving circuit
State information；And after the logic state that LED switch color-temperature regulating controls chip is stablized, generate and output the 4th controls signal s60ms,
It is kept in state of a control and kept in logic state information is sent in state information storage unit and stores by switch unit,
Wherein the 4th control signal s60ms delays control a signal yw_ at least predetermined time intervals in third, to ensure toward status information
System logic state has been stablized when write information in storage unit.If (being equivalent to the 4th control letter before in stable condition
Before number s60ms is generated), and detect the action of open-close switch, then generate and export new second control signal
Cli and new third control signal yw_, just generate and export the 4th control signal s60ms after in stable condition.
Fig. 5 is the circuit diagram of the utility model LED switch color-temperature regulating control chip 3rd embodiment, in the present embodiment
In, the generation for controlling signal is realized by hardware circuit.
As shown in figure 5, power detecting and control signal generating circuit include：
Switch input signal detection circuit 303, input terminal connect the CLK feet of chip, and export the according to testing result
One output signal clk_fp and the second output signal clk_lp.
VDD power on detection circuit 302, input terminal are connected to the VDD power output ends of in-line power circuit 300, and root
According to testing result output VDD testing result signals Vdd_st；
VCC power on detection circuit 301, input terminal are connected to the VCC power output ends of in-line power circuit 300, and root
According to testing result export VCC testing result signal Vcc_por and
Signal generating circuit is controlled, it is as follows including four circuits：
First control signal generation circuit, according to the first output signal clk_ of switch input signal detection circuit 303
The VCC that VDD testing result signal Vdd_st and the VCC power on detection circuit 301 that fp, VDD power on detection circuit 302 exports exports
Testing result signal Vcc_por generates first control signal yw, is exported to driving circuit to state of a control information memory cell
The logic state information stored is sent to state by the logic state information while state of a control information memory cell stored
It is kept in temporary and switch unit；
Second control signal generation circuit, according to the second output signal clk_ of switch input signal detection circuit 303
Lp generates second control signal cli, is kept in state of a control and switch unit switches to next logic state and keeps in next
The logic state information of logic state；
Third controls signal generating circuit, according to the first output signal clk_ of switch input signal detection circuit 303
The output signal Vcc_por productions of output signal Vdd_st and the VCC power on detection circuit 301 of fp, VDD power on detection circuit 302
Raw third controls signal yw_, is kept in state of a control and switch unit exports the logic state letter kept in driving circuit
Breath；And
4th control signal generating circuit, according to the first output signal clk_ of switch input signal detection circuit 303
Fp generates the 4th control signal s60ms, is kept in state of a control and switch unit transmits kept in logic state information
To being stored in state information storage unit, wherein the 4th control signal s60ms delays are predetermined in third control signal yw_ at least one
Time interval.
As shown in figure 5, first control signal generation circuit, second control signal generation circuit, third control signal generate
Circuit and the 4th control signal generating circuit by the first delay circuit 305, the second delay circuit 306, third delay circuit 307,
It is constituted with door 319 and rest-set flip-flop 304；Wherein,
It is separately connected the defeated of VDD power on detection circuit 302 and VCC power on detection circuit 301 with two input terminals of door 319
Outlet, output end connect the first input end S of rest-set flip-flop 304；
First output signal clk_ of the input terminal connecting valve circuit for checking input signals 303 of the first delay circuit 305
The ends fp, output the 4th control signal s60ms to control the on/off of first switch circuit 309；
First output signal clk_ of the input terminal connecting valve circuit for checking input signals 303 of the second delay circuit 306
The ends fp, output end connect the second input terminal R of rest-set flip-flop 304；
First output end Q output first control signals yw of rest-set flip-flop 304, second output terminalExport third control letter
Number yw_；
Second output signal clk_ of the input terminal connecting valve circuit for checking input signals 303 of third delay circuit 307
The ends lp, output second control signal cli to state is kept in and switch unit.
Control unit includes：
First switch circuit 309, for connection status to be temporary under the control of the 4th control signal s60ms and switch unit
Output end to state information storage unit input terminal, by the logic state information that state is temporary and switch unit is kept in
It is sent to state information storage unit；
Second switch circuit 310, under the control of first control signal yw connection status to be temporary and switch unit
Input terminal is to the output end of state information storage unit, the logic state information transmission that state information storage unit is stored
To state is temporary and switch unit；
Third switching circuit 311, under the control of first control signal yw connection state information storage unit it is defeated
The input terminal of outlet and driving circuit, to export stored logic state information to driving circuit；
4th switching circuit 312, under the control of third control signal yw_ connection status to be temporary and switch unit
The input terminal of output end and driving circuit, to export kept in logic state information to driving circuit.
In the embodiment shown in fig. 5, state information storage unit is realized using EEprom storage units 308 ', and state is temporary
It deposits and switch unit is realized using internal register 313 '.
The operation principle for controlling the LED switch color-temperature regulating of Fig. 5 embodiments chip below illustrates.Due in addition to
There are one the internal register 313 ' for being used for storage state information, the internal registers 313 ' outside for EEPROM memory cell 308 '
In the case where vdd voltage is very low, the internal information stored will disappear, its effect is EEPROM memory cell 308 '
Mirror image, in order to avoid continually being written and read EEPROM memory cell.Basic operation principle is to power on for the first time
(it is so-called it is first power on refer to the voltage on the VDD capacitances being connected with control chip 208VDD feet when input switch is closed for 0 or
It is very low) when, the information in EEPROM memory cell 308 ' is write in internal register 313 ', later all are to the information
Processing is all completed in internal register, and control chip 208 can't carry out any action to EEPROM memory cell, only exist
The information in internal register is re-written in EEPROM memory cell (after in stable condition) after powering on a period of time, thus
It can be to avoid being frequently written and read to EEPROM memory cell.
It is to power on for the first time that the work-based logic that LED switch color-temperature regulating controls chip 208, which is when chip determines this time and powers on, the
Three switching circuits 311 are closed the state in EEPROM memory cell 308 ' to be input in driving circuit 314, when continuous work
When making after a period of time and can ensure that the voltage on VDD capacitances is sufficiently high, second switch circuit 310 is closed to handle
State in EEPROM memory cell 308 ' is write in internal register, while the 4th switching circuit 312 is closed and third switch
Circuit 311 disconnects, since at this moment EEPROM memory cell is as when the state in internal register, so such switching
It will not cause the transformation of logic state.If not powering on for the first time, (there is enough VDD capacitances when i.e. input switch 200 is closed
High voltage) directly from internal register output, i.e. the 4th switching circuit 312 is closed and third switching circuit 311 logic state
It disconnects.From fig. 5, it can be seen that only have the power supply of internal register 313 ' to be powered by VDD in internal circuit, the electricity of other circuits
Source is powered by VCC, and the purpose designed in this way is to work as the case where input switch 200 disconnects, and the current loss of VDD feet is minimum, so
One can keep the sufficiently long time compared with the capacitance of low capacity.
LED switch color-temperature regulating controls chip 208 to ensure that status information that EEPROM memory cell is stored will not be because
For the time it is too long lose, control chip 208 also specially starts and continuous work deposits inside after for a period of time each
Status information in device is re-written in EEPROM memory cell, ensures that the information in EEPROM memory cell will not lose.Cause
Chip 208, which is controlled, for LED switch color-temperature regulating only re-closes internal logic in several seconds after input switch 200 disconnects
State can just be switched to next state, and otherwise state maintains last state, and it is possible in use one
It is all not necessarily to change the logic state of control chip 208 in section long time, if irregularly in update EEPROM memory cell
Information may be easy to cause stored information and lose.In order to realize above-mentioned function, control chip is in each input switch
After 200 are closed, chip operation writes signal s60ms for internal register by a defeated EEPROM afterwards for a period of time
Information in 313 ' is write in EEPROM memory cell 308 '.
When powering on for the first time, the internal signal that LED switch color-temperature regulating controls chip 208 is as shown in Figure 6.The waveform of CLK voltages
The output waveform of 400 input switches 200 that chip 208 detects in order to control indicates when waveform is low level at input switch 200
In the state of disconnection, and when similar square wave occurs in the waveform, indicates that input switch 200 is in the state of closure.VCC voltage (waveforms
401) rise as the voltage of capacitance 204 rises, and vdd voltage 402 is due to the VDD pins connection VDD electricity of control chip 208
Hold 206, so the rising of vdd voltage (waveform 402) is slower.The input of VCC power on detection circuit 301 is VCC, for VCC
Voltage is detected, and when VCC voltages reach preset reference voltage, exports a pulse signal vcc_por (waveform 403).
The input of VDD power on detection circuit 302 is VDD, for being detected to vdd voltage, when vdd voltage is more than preset reference electricity
When pressure, output signal Vdd_st (waveform 404) becomes low level from high level.Signal Vcc_por and signal vdd_st pass through with
Output signal behind the door is input to the ends S of rest-set flip-flop 304, the output signal yw (waveform 406) and yw_ (waves of rest-set flip-flop 304
Shape 407) be respectively used to control third switching circuit 311 and the 4th switching circuit 312, sequential it is as shown in Figure 6.It is shown in fig. 6
When sequential is initial power-on, the waveform correlation of chip 208 is controlled.From fig. 6, it can be seen that yw signals are high point electricity when powering on for the first time
It is flat, for controlling switch 311 in information input to driving circuit in EEPROM memory cell, when stream time is more than one
It fixes time, pulse signal s30ms (waveform 405) resets rest-set flip-flop 304, the input signal conversion of driving circuit 314
At the output signal of internal register 313.
The input signal of circuit for checking input signals 303 is CLK, the as output signal of input switch 200, output letter
Number it is clk_fp and clk_lp, respectively represents the end signal of signal and CLK signal when CLK signal begins, i.e. clk_fp appears in
Input switch 200 be closed when, and clk_lp appear in input switch 200 disconnect when.Waveform as shown in Figure 7 is input switch
200 waveforms switched twice in succession, the interval time switched twice are less than the VDD capacitances institute retainable time.In figure, waveform
500 be the input signal CLK of circuit for checking input signals 303.From figure 7 it can be seen that s30ms (waveform 503) and s60ms (waves
Shape 504) be respectively clk_fp (waveform 501) the different delays time pulse, and signal cli (waveform 505) be clk_lp (waves
Shape 502) delay pulse, the pulse be used for internal register 313 carry signal.
For example, in an embodiment of the utility model,
Pulse signal s30ms (waveform 503) is set as being delayed in about 30 milliseconds of pulse signal clk_fp (waveform 501),
Pulse signal s60ms (waveform 504) is set as being delayed in about 60 milliseconds of pulse signal clk_fp (waveform 501),
Pulse signal cli (waveform 505) is set as delay in about 60 milliseconds of pulse signal clk_lp (waveform 502).
In another embodiment of the utility model,
Pulse signal s30ms (waveform 503) is set as being delayed in about 16 milliseconds of pulse signal clk_fp (waveform 501),
Pulse signal s60ms (waveform 504) is set as being delayed in about 30 milliseconds of pulse signal clk_fp (waveform 501),
Pulse signal cli (waveform 505) is set as delay in about 60 milliseconds of pulse signal clk_lp (waveform 502).
In another embodiment of the utility model,
Pulse signal s30ms (waveform 503) is set as being delayed in about 16 milliseconds of pulse signal clk_fp (waveform 501),
Pulse signal s60ms (waveform 504) is set as being delayed in about 30 milliseconds of pulse signal clk_fp (waveform 501),
Pulse signal cli (waveform 505) is set as delay in about 30 milliseconds of pulse signal clk_lp (waveform 502).
In practical operation, delay time is not a determining value, and example provided above is only an approximate range,
Such as the approximate range of " about 30 milliseconds " can be 30 ± 5 milliseconds, the approximate range of " about 30 milliseconds " can be 60 ± 10
Millisecond, the approximate range of " about, 16 milliseconds " can be 16 ± 3 milliseconds.
The LED switch color-temperature regulating control chip of the utility model can be used in LED illumination lamp.This LED illumination lamp
Two groups of LED and LED power supplies connected to it and above-mentioned LED switch color-temperature regulating including different-colour control chip, and
The VDD feet that LED switch color-temperature regulating controls chip are grounded by storage capacitor (i.e. VDD capacitances).
In the embodiment shown in Figure 2, LED power supplies are double constant-current supplies, and LED switch color-temperature regulating controls chip
Between CLK feet connecting valve 201 and rectification circuit, LED switch color-temperature regulating controls the controls of the first control terminal P1 and second of chip
End P2 is connect with the supply pin of double constant-current supplies.
The LED switch color-temperature regulating control chip that the utility model is proposed in double constant-current supply systems in addition to that can be used to control
The state of current constant control chip processed, can also apply in application as shown in Figure 8 and Figure 9.
As shown in figure 8, in the utility model LED switch mixes colours temperature control circuit second embodiment, LED power supplies are
Inverse-excitation type switch power-supply is isolated, i.e. the LED switch color-temperature regulating control chip of the utility model can be used for being isolated flyback switching electricity
In source, for control different-colour two string LED switch to realize the control without colour temperature, the flyback represented by wherein I6
Formula Switching Power Supply.As shown in figure 8, the CLK feet of LED switch color-temperature regulating control chip are connected to the defeated of isolation inverse-excitation type switch power-supply
Outlet, LED switch color-temperature regulating control chip the first control terminal P1 and the second control terminal P2 respectively with first group LED and second group
LED connections.
As shown in figure 9, in the utility model LED switch mixes colours temperature control circuit 3rd embodiment, LED power supplies are
Step down switching regulator.That is the LED switch color-temperature regulating control chip of the utility model can be used in step down switching regulator, be used for
The switch of two string LED of different-colour is controlled to realize the control without colour temperature, represented by wherein I7 is buck switch
Power supply.As shown in figure 9, the CLK feet of LED switch color-temperature regulating control chip are connected to the output end of step down switching regulator, LED is opened
The the first control terminal P1 and the second control terminal P2 for closing color-temperature regulating control chip are connect with first group of LED and second group of LED respectively.
Figure 10 is the flow chart of the utility model LED switch color-temperature regulating control method.As shown in Figure 10, the utility model
LED switch color-temperature regulating control method includes the following steps：
Step A, power detecting and control signal generating circuit detect power supply signal, judge power input according to power supply signal
Whether the time interval of the disconnection of switch, closure and open-close is more than the first scheduled duration, and generated according to judging result and
The corresponding control signal of output.
Step B, logical status control circuit exports logic state information according to control signal, and when judgement power input is opened
Make that controlling chip is directly entered power input switch when closing the time interval of conjunction and open-close more than the first scheduled duration
Logic state before disconnection.
Step C, driving circuit turns on and off corresponding LED according to the logic state information output drive signal received
Power supply.
Figure 11 is according to the flow chart of the LED switch color-temperature regulating control method of one embodiment of the utility model, is Figure 10 institutes
Show a kind of specific implementation of LED switch color-temperature regulating control method.As shown in figure 11, LED switch color-temperature regulating control method includes：
In step A0, power detecting and control signal generating circuit detect power supply signal, judge power supply according to power supply signal
Whether the time interval of the disconnection of input switch, closure and open-close is more than the first scheduled duration.
In step A01, next execution step is determined according to whether power input switch disconnects.Wherein, when power input is opened
Shutdown is opened, and A1 is entered step, and does not disconnect then return to step A0.
In step A02, next execution step is determined according to whether power input switch is closed.Wherein, when power input is opened
Close close, execute step A03 further judge open-close time interval whether be more than the first scheduled duration, it is not closed then
Return to step A0.
In step A03, when judging that the time interval of open-close is more than the first scheduled duration, step A2 is executed, is otherwise held
Row step A3.
In step A1 second control signal cli is generated and exports when judgement power input switch disconnection；
In step A2, when judgement power input switch is closed and the time interval of open-close is more than the first scheduled duration,
Generate and export first control signal yw；
In step A3, make a reservation for when the time interval of judgement power input switch closure and open-close is less than or equal to first
Duration, generates and the output third control signal s60ms of control signal yw_ and the 4th, wherein the 4th control signal s60ms delays in
Third controls a signal yw_ at least predetermined time intervals, to ensure system when write information into state information storage unit
Logic state has been stablized；
Step A1, step B1, step B2, step are executed respectively by logical status control circuit after step A2, step A3
B3。
In step B1, is kept according to second control signal cli state of a controls and switch unit switches to next logic state
And the logic state information of temporary next logic state,
In step B2, stored to driving circuit output according to first control signal yw state of a controls information memory cell
The logic state information stored is sent to state and keeps in and cut by logic state information while state of a control information memory cell
It changes in unit and keeps in.
In step B3, is kept according to third control signal yw_ state of a controls and switch unit is temporary to driving circuit output institute
The logic state information deposited；And according to the 4th control signal s60ms state of a controls are temporary and switch unit is by kept in logic
Status information is sent in state information storage unit and stores.
After step B2 and step B3, step C is executed, driving circuit is according to the logic state information output driving received
Signal is to turn on and off the power supply of corresponding LED.
In conclusion the utility model, which provides a kind of LED switch color-temperature regulating, controls chip, on which can remember
Secondary state when turning off the light, i.e., after being switched to liked state in user, on the state of control chip of turning on light every time is exactly later
Secondary state, without again through switching.
In the preferred embodiment of the utility model, since the power-off of control built-in chip type keeps the EEPROM storages of data
Unit, even if can still preserve status information in the case of no electricity.Control chip is in first power on first EEPROM
In information input to driving circuit in storage unit, to ensure that the state for controlling chip is state when turning off the light last time, together
When in the information input to internal register in EEPROM memory cell, later the input signal of driving circuit from EEPROM
The output signal for being outputted to internal register of storage unit.
It is newest status information that LED switch color-temperature regulating, which controls chip in order to ensure to store in EEPROM memory cell,
Turn on light every time it is in stable condition after the information in internal register can be re-written to EEPROM memory cell.
The utility model LED switch color-temperature regulating control chip can be used not only for controlling constant current in the systems of double constant-current supplies
Control the switch of chip, can also be applied in inverse-excitation type switch power-supply and step down switching regulator directly to the switch of LED into
Row control, realizes the control of LED colour temperatures.
Above example is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, the scope of protection of the utility model can not be limited.It is all with
The equivalent changes and modifications that the utility model claims range is done, should all belong to the utility model claims covers model
It encloses.
Claims (10)
1. a kind of LED switch color-temperature regulating controls chip, which is characterized in that including,
Power detecting for detecting power supply signal, being generated according to the power supply signal and export control signal and control signal production
Raw circuit；
Logical status control circuit for exporting logic state information according to the control signal received, when power supply is defeated
The control chip is made to be directly entered power input and open when entering to switch the time interval of open-close more than the first scheduled duration
Turn off the logic state before opening；
For according to the logic state information output drive signal that receives to turn on and off the power supply of corresponding LED
Driving circuit；And
In-line power circuit for providing working power for each circuit of the control chip interior.
2. LED switch color-temperature regulating according to claim 1 controls chip, which is characterized in that
The logical status control circuit includes：
For being maintained to after storing the logic state information after the control chip interior logic state is stablized and power-off
The state information storage unit of data；
With the state of state information storage unit communication connection is temporary and switch unit；And
With the control unit that the state information storage unit and state be temporary and switch unit connect, according to control letter
Number execute following operation：
It controls the state information storage unit and state is temporary and switch unit alternative one exports institute to the driving circuit
Storage or the logic state information kept in；
It controls the state information storage unit logic state information stored is sent to during state is temporary and switch unit
It is temporary, or the control state is temporary and kept in logic state information is sent to state information storage unit by switch unit
Middle storage；And
Control that the state is temporary and switch unit switches to next logic state and keeps in the logic of next logic state
Status information.
3. LED switch color-temperature regulating according to claim 2 controls chip, which is characterized in that
The power detecting and control signal generating circuit include：
Switch input signal detection circuit (303), input terminal connect the CLK feet of chip, and export first according to testing result
Output signal (clk_fp) and the second output signal (clk_lp)；
VDD power on detection circuit (302), input terminal are connected to the VDD power output ends of the in-line power circuit (300),
And VDD testing results signal (Vdd_st) is exported according to testing result；
VCC power on detection circuit (301), input terminal are connected to the VCC power output ends of the in-line power circuit (300),
And VCC testing results signal (Vcc_por) is exported according to testing result；
First control signal generation circuit, according to the first output signal of the switch input signal detection circuit (303)
(clk_fp), the VDD testing results signal (Vdd_st) and VCC power on detection circuit of VDD power on detection circuit (302) output
(301) the VCC testing results signal (Vcc_por) exported generates first control signal (yw)；
Second control signal generation circuit, according to the second output signal of the switch input signal detection circuit (303)
(clk_lp) second control signal (cli) is generated；
Third controls signal generating circuit, according to the first output signal of the switch input signal detection circuit (303)
(clk_fp), the output letter of the output signal (Vdd_st) of VDD power on detection circuit (302) and VCC power on detection circuit (301)
Number (Vcc_por) generates third control signal (yw_)；And
4th control signal generating circuit, according to the first output signal of the switch input signal detection circuit (303)
(clk_fp) the 4th control signal (s60ms) is generated.
4. LED switch color-temperature regulating according to claim 3 controls chip, which is characterized in that
Described control unit includes：
First switch circuit (309) is arranged the state is temporary and the output end of switch unit is stored with the status information
Between the input terminal of unit, under the control of the 4th control signal (s60ms) by the state is temporary and switch unit
The logic state information kept in is sent to the state information storage unit；
Second switch circuit (310) is arranged the state is temporary and input terminal to the status information of switch unit stores
Between the output end of unit, the state information storage unit to be stored under the control of the first control signal (yw)
Logic state information be sent to that the state is temporary and switch unit；
The input in the output end and the driving circuit of the state information storage unit is arranged in third switching circuit (311)
Between end, with what is stored to driving circuit output state information memory cell under the control of the first control signal (yw)
Logic state information；
4th switching circuit (312), be arranged the state is temporary and the output end of switch unit and the driving circuit it is defeated
Between entering end, under the control of third control signal (yw_) to driving circuit output state is temporary and switch unit institute
Temporary logic state information.
5. LED switch color-temperature regulating according to claim 3 or 4 controls chip, which is characterized in that
The first control signal generation circuit, second control signal generation circuit, third control signal generating circuit and the 4th
Signal generating circuit is controlled by the first delay circuit (305), the second delay circuit (306), third delay circuit (307) and door
(319) it is constituted with rest-set flip-flop (304)；
Wherein,
It is separately connected VDD power on detection circuit (302) and VCC power on detection circuit (301) with two input terminals of door (319)
Output end, output end connect the first input end (S) of the rest-set flip-flop (304)；
The input terminal of first delay circuit (305) connects the first output of the switch input signal detection circuit (303)
Signal (clk_fp) is held, and output the 4th controls signal (s60ms) to control the on/off of first switch circuit (309)；
The input terminal of second delay circuit (306) connects the first output of the switch input signal detection circuit (303)
Signal (clk_fp) is held, and output end connects the second input terminal (R) of the rest-set flip-flop (304)；
The first output end (Q) of the rest-set flip-flop (304) exports the first control signal (yw), second output terminalIt is defeated
Go out the third control signal (yw_)；
The input terminal of third delay circuit (307) connects the second output signal of the switch input signal detection circuit (303)
(clk_lp) it holds, output second control signal (cli) to the state is kept in and switch unit.
6. LED switch color-temperature regulating according to claim 2 controls chip, which is characterized in that
The state information storage unit is EEprom storage units；
The state is temporary and switch unit is internal register.
7. LED switch color-temperature regulating according to claim 6 controls chip, which is characterized in that
The in-line power circuit (300) includes：
For providing VCC power supplys for the power detecting and control signal generating circuit, EEprom storage units, driving circuit
VCC power output ends；And
VDD power output ends for providing VDD power supplys for the internal register.
8. a kind of LED illumination lamp, which is characterized in that including：Two groups of LED of different-colour and LED connected to it power supply electricity
Source, and the LED switch color-temperature regulating control chip as described in any one of claim 1 to 7.
9. LED illumination lamp according to claim 8, which is characterized in that the LED switch color-temperature regulating control chip
VDD feet are grounded by storage capacitor (206).
10. LED illumination lamp according to claim 8, which is characterized in that
The LED power supplies are double constant-current supplies, the CLK feet connecting valve (201) of the LED switch color-temperature regulating control chip
Between rectification circuit, the first control terminal (P1) and the second control terminal (P2) of the LED switch color-temperature regulating control chip and institute
State the supply pin connection of double constant-current supplies；Alternatively,
The LED power supplies are isolation inverse-excitation type switch power-supply, the CLK feet connection of the LED switch color-temperature regulating control chip
In the output end of isolation inverse-excitation type switch power-supply, the first control terminal (P1) and second of the LED switch color-temperature regulating control chip
Control terminal (P2) is connect with first group of LED and second group of LED respectively；Alternatively,
The LED power supplies are step down switching regulator, and the CLK feet of the LED switch color-temperature regulating control chip are connected to drop
The output end of pusher-type switch power supply, the first control terminal (P1) and the second control terminal of the LED switch color-temperature regulating control chip
(P2) it is connect respectively with first group of LED and second group of LED.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721555382.XU CN207854219U (en) | 2017-11-20 | 2017-11-20 | LED switch color-temperature regulating controls chip and LED illumination lamp |
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112068461A (en) * | 2019-06-11 | 2020-12-11 | 北京大瞬科技有限公司 | Controller, control circuit and method for controlling intelligent equipment by using control circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112068461A (en) * | 2019-06-11 | 2020-12-11 | 北京大瞬科技有限公司 | Controller, control circuit and method for controlling intelligent equipment by using control circuit |
| CN112068461B (en) * | 2019-06-11 | 2022-01-04 | 北京大瞬科技有限公司 | Controller, control circuit and method for controlling intelligent equipment by using control circuit |
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Effective date of registration: 20210316 Address after: Building C, No.888, Huanhu West 2nd Road, Lingang New District, Pudong New Area pilot Free Trade Zone, Shanghai Patentee after: Shanghai Xinfei Semiconductor Technology Co.,Ltd. Address before: 518052 1701, 17th floor, tefa information technology building, Qiongyu Road, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SILICON DRIVER SEMICONDUCTOR Co.,Ltd. |