CN207369359U - Toning controller, toning control chip, light modulation toning LED drive control circuits and LED device - Google Patents
Toning controller, toning control chip, light modulation toning LED drive control circuits and LED device Download PDFInfo
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Abstract
The utility model discloses one kind toning controller, toning control chip, light modulation toning LED drive control circuits and LED device, the toning controller is electrically connected by a switch module with LED load, the LED load includes first, second LED load being connected in parallel, the first pulse width modulating signal that the toning controller is received according to it generates first, second control signal and exports to the switch module, and first, second control signal is complementary control signal；The switch module is turned on or turned off according to the control signal of reception, and the electric current of first, second LED load is flowed through with adjustment.Light modulation toning LED drive control circuits described in the utility model adjust the brightness of LED load by pwm signal all the way, another way pwm signal produces two-way complementary control signal to switch the fet switch being connected in LED load, and by the duty cycle for adjusting another way pwm signal, to distribute the current ratio of two paths of LED load, to reach the effect of light modulation toning.
Description
Technical field
It the utility model is related to LED illumination switch toning control technology field, more particularly to a kind of toning controller, toning
Control chip, light modulation toning LED drive control circuits and LED device.
Background technology
LED is received more and more attention with the advantages that its efficient, energy-saving and environmental protection and long lifespan, and LED lamp is as a kind of
Novel green light source progressively instead of traditional fluorescent lamp.Continuous with LED illumination application range expands, LED illumination also from
Best single illumination functions gradually develop to intelligent, hommization and energy saving direction.In order to meet people under different scenes it is right
The requirement of light, the LED illumination lamp for possessing light modulation toning function are come into being.
Fig. 1 is a kind of schematic diagram of disclosed PWM light modulations toning LED drive circuit, which includes input rectifying
Bridge 110, AC/DC constant voltage outputting circuits 120, the constant-current drive circuit 140 of two-way PWM light modulation tonings, the LED of two kinds of colors are born
130 are carried to be connected on respectively on the constant-current drive circuit 140 of two-way PWM light modulation tonings.Wherein, AC/DC constant voltage outputting circuits 120 are
One constant pressure source, is more than the electricity of two cluster of lamps, ornamental pearls for providing a stable output voltage to two string LED, the current capacity of constant pressure source
The sum of stream.For example constant pressure source is capable of providing 300mA current capacities, the constant current per cluster of lamps, ornamental pearl is 100mA.Pass through 1 He of modulation (PWM)
The duty 0-100% of PWM2, the current regulation scope per cluster of lamps, ornamental pearl is 0-100mA.
When realizing different brightness or the adjusting of LED blend colors, it is necessary to controlled respectively by the pwm signal of two-way independence
Constant-current drive circuit processed is completed.
Especially when adjusting LED light blend color, it is still necessary to control constant current to drive respectively by the pwm signal of two-way independence
Dynamic circuit is completed, and the structure that this results in whole system is more complicated, of high cost, volume is big.Therefore, there is an urgent need for existing tune
Light toning LED drive circuit is improved.
Utility model content
The purpose of this utility model is that, there is provided one kind light modulation toning LED drive control circuits, it is believed by PWM all the way
Number adjust the brightness of LED load, another way pwm signal produces two-way complementary control signal and be connected on to switch in LED load
Fet switch, and by adjusting the duty cycle of another way pwm signal, to distribute the current ratio of two paths of LED load,
And then the effect of light modulation toning.
To achieve the above object, the utility model provides a kind of toning controller, passes through a switch module and LED load
It is electrically connected, the LED load includes the first LED load and the second LED load being connected in parallel, and the toning controller is according to it
The first pulse width modulating signal received generates first control signal and second control signal and exports to the switch module,
The first control signal and second control signal are complementary control signal；The switch module is according to the control of reception
Signal conduction or shut-off, the electric current of first LED load and second LED load is flowed through with adjustment.
In an embodiment of the utility model, the switch module includes first switch and second switch, and described first
Switch is electrically connected with first LED load, and the second switch is electrically connected with second LED load；First control
Signal controls the on or off of the first switch, and the electric current of first LED load is flowed through with control；Second control
Signal controls the on or off of the second switch, and the electric current of second LED load is flowed through with control.
In an embodiment of the utility model, the toning controller is configured as distribution and flows through the first LED bearing
Carry the current ratio with the second LED load.
In an embodiment of the utility model, the toning controller includes：First signal conversion unit and toning are controlled
Unit processed；First signal conversion unit generates first voltage signal according to first pulse width modulating signal of reception
With second voltage signal；The toning control unit, for being given birth to respectively according to the first voltage signal and second voltage signal
Into the first control signal and second control signal.
In an embodiment of the utility model, first signal conversion unit includes a phase inverter nor gate and an electricity
Press generation unit；The phase inverter nor gate is used to reversely export external input signal to voltage generating unit afterwards；The electricity
Press generation unit to be electrically connected an operating voltage, according to the external input signal and it is anti-phase after external input signal generation the
One voltage signal and second voltage signal.
In an embodiment of the utility model, the voltage generating unit includes：First metal-oxide-semiconductor, the second metal-oxide-semiconductor, institute
The grid for stating the first metal-oxide-semiconductor connects the output terminal of the phase inverter nor gate, and the grid of second metal-oxide-semiconductor receives described first
Pulse width modulating signal, the drain electrode of first metal-oxide-semiconductor, the second metal-oxide-semiconductor are connected to the operating voltage, the first MOS
Pipe, the source electrode ground terminal of the second metal-oxide-semiconductor.
In an embodiment of the utility model, the voltage generating unit includes：First metal-oxide-semiconductor drain electrode passes through the
One resistance is connected to the operating voltage, and/or the drain electrode of the second metal-oxide-semiconductor is connected to the operating voltage by second resistance.
In an embodiment of the utility model, the toning controller further includes a waveform adjuster, for outside
Exported after input signal shaping to first signal conversion unit.
In an embodiment of the utility model, the toning control unit includes a rest-set flip-flop and secondary signal is changed
Unit, the set end of the rest-set flip-flop connect the first voltage signal, the reset terminal connection of the rest-set flip-flop described the
Two voltage signals, the rest-set flip-flop output terminal output first control signal, the power supply of the rest-set flip-flop it is just defeated
Enter one operating voltage of end connection, negative input end connects a reference ground；The secondary signal converting unit connects the rest-set flip-flop
Output terminal, for generating the second control signal according to first control signal.
In an embodiment of the utility model, when the first voltage signal is high level, the first control letter
Number it is high level, the second control signal is low level；When the first voltage signal is low level, first control
Signal is low level, and the second control signal is high level.
In an embodiment of the utility model, the secondary signal converting unit is a phase inverter nor gate.
The utility model also provides a kind of toning control chip, it includes above-mentioned any toning controller.
In addition, the utility model also provides a kind of light modulation toning LED drive control circuits, it includes：One rectifier bridge, it is described
Rectifier bridge is electrically connected to an alternating current input power supplying；LED load, the LED load includes the first LED load and the 2nd LED is born
Carry, the two paths of LED load is connected in parallel to the rectifier bridge；One switch module, the switch module are respectively and electrically connected to described
First LED load and the second LED load；One toning controller, the toning controller are respectively and electrically connected to the switching molding
Block and the rectifier bridge；One constant-current driving power supply, the constant-current driving power supply are respectively and electrically connected to the switch module, described
Toning controller and the rectifier bridge；Wherein, one second pulse-width adjustment control signal of the constant-current driving power supply access, and according to
The second pulse-width adjustment control signal control flows through the size of current of the LED load；The toning controller connects according to it
The first pulse width modulating signal received generates first control signal and second control signal and exports to the switch module, institute
First control signal and second control signal are stated as complementary control signal；The switch module is believed according to the control of reception
Number conducting or shut-off, the electric current of first LED load and second LED load is flowed through with adjustment.
In an embodiment of the utility model, the switch module includes：First switch and second switch, described first
Switch is electrically connected with first LED load, and the second switch is electrically connected with second LED load；First control
Signal controls the on or off of the first switch, and the electric current of first LED load is flowed through with control；Second control
Signal controls the on or off of the second switch, and the electric current of second LED load is flowed through with control.
In an embodiment of the utility model, the toning controller is configured as distribution and flows through the first LED bearing
Carry the current ratio with the second LED load.
In an embodiment of the utility model, the toning controller includes：First signal conversion unit, toning control
Unit；First signal conversion unit according to first pulse width modulating signal of reception generate first voltage signal and
Second voltage signal；The toning control unit, for being generated respectively according to the first voltage signal and second voltage signal
The first control signal and second control signal.
In an embodiment of the utility model, first signal conversion unit includes a phase inverter nor gate and an electricity
Press generation unit；The phase inverter nor gate is used to reversely export external input signal to voltage generating unit afterwards；The electricity
Pressure generation unit electrically connects an operating voltage, according to the external input signal and it is anti-phase after external input signal generation the
One voltage signal and second voltage signal, wherein the operating voltage is to be obtained from voltage source, or the positive input from LED load
End directly obtains or is obtained by series resistance and capacitance partial pressure.
In an embodiment of the utility model, the voltage generating unit includes：First metal-oxide-semiconductor and the second metal-oxide-semiconductor, institute
The grid for stating the first metal-oxide-semiconductor connects the output terminal of the phase inverter nor gate, and the grid of second metal-oxide-semiconductor receives described first
Pulse width modulating signal, the drain electrode of first metal-oxide-semiconductor, the second metal-oxide-semiconductor are connected to the operating voltage, the first MOS
Pipe, the source electrode ground terminal of the second metal-oxide-semiconductor.
In an embodiment of the utility model, the voltage generating unit includes：First metal-oxide-semiconductor drain electrode passes through the
One resistance is connected to the operating voltage, and/or the drain electrode of the second metal-oxide-semiconductor is connected to the operating voltage by second resistance.
In an embodiment of the utility model, the circuit includes a waveform adjuster, for external input signal
Exported after shaping to first signal conversion unit.
In an embodiment of the utility model, the toning control unit includes a rest-set flip-flop and secondary signal is changed
Unit, the set end of the rest-set flip-flop connect the first voltage signal, the reset terminal connection of the rest-set flip-flop described the
Two voltage signals, the rest-set flip-flop output terminal output first control signal, the power supply of the rest-set flip-flop it is just defeated
Enter end and connect the operating voltage, negative input end connects a reference ground, wherein the reference ground is from first switch, second switch
One end obtain；The secondary signal converting unit connects the output terminal of the rest-set flip-flop, for according to first control signal
Generate the second control signal.
In an embodiment of the utility model, when the first voltage signal is high level, the first control letter
Number it is high level, the second control signal is low level；When the first voltage signal is low level, first control
Signal is low level, and the second control signal is high level.
In an embodiment of the utility model, the secondary signal converting unit is a phase inverter nor gate.
In addition, the utility model also provides a kind of toning control chip, the control chip includes any of the above-described described
Toning controller.
In addition, the utility model also provides a kind of LED device, the equipment includes any of the above-described toning control
Device.
In addition, the utility model also provides a kind of LED device, the equipment includes above-mentioned toning control chip.
In addition, the utility model also provides a kind of LED device, the equipment includes any of the above-described light modulation toning
LED drive control circuits.
The utility model has the advantage of light modulation toning LED drive control circuits described in the utility model pass through PWM all the way
Signal adjusts the brightness of LED load, and another way pwm signal produces two-way complementary control signal and be connected on LED load to switch
On fet switch, and by adjusting the duty cycle of another way pwm signal, to distribute the electric current ratio of two paths of LED load
Example, and then the effect for temperature adjustment of mixing colours.In addition, light modulation toning controller described in the utility model has, small, cost is low
The features such as.
Brief description of the drawings
Fig. 1 is the schematic diagram of PWM light modulations toning LED drive control circuits of the prior art；
Fig. 2 is a kind of configuration diagram of toning controller in an embodiment of the utility model；
Fig. 3 is the circuit connection diagram of the toning controller in the embodiment of the utility model；
Fig. 4 is the electricity of the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor in the toning controller in the embodiment of the utility model
The relation schematic diagram of corrugating and the first pulse-width adjustment control signal waveform；
Fig. 5 is a kind of connection diagram of light modulation toning LED drive control circuits in an embodiment of the utility model.
Embodiment
Below in conjunction with the accompanying drawings to toning controller toning control chip provided by the utility model, light modulation toning LED drivings
Control circuit and LED device elaborate.
Referring to shown in Fig. 2 to Fig. 4, an embodiment of the utility model provides a kind of toning controller 210, is opened by one
Module 220 is closed to be electrically connected with LED load 230.The LED load 230 includes 231 He of the first LED load being connected in parallel with each other
Second LED load 232.The first pulse width modulating signal PWM1 generations first that the toning controller 240 is received according to it
Control signal and second control signal, and export to the switch module 220, the first control signal and second control signal
For complementary control signal.The switch module 220 is according to the control signal of reception (such as first control signal or second
Control signal) and turn on or turn off, the electricity of first LED load 231 and second LED load 232 is flowed through with adjustment
Stream.
The toning controller is configured to distribution by 210 and flows through 231 and second LED load 232 of the first LED load
Current ratio.Since first LED load 231 and second LED load 232 are two different colors of LED load, because
This, in a certain period of time, second LED load is flowed through when the current ratio for flowing through first LED load 231 is more than
During 232 current ratio, the color shown by the LED load 230 is with shown by corresponding with first LED load 231
Color based on.For example, the color of the first LED load 231 (being made of the LED light string of multiple white lights) display is white,
The color of second LED load 232 (being made of the LED light string of the multiple yellow lights) display is yellow, in a certain period of time, when
It is described when flowing through the current ratio of first LED load 231 more than the current ratio for flowing through second LED load 232
Color shown by LED load 230 is based on white.Conversely, the color shown by the LED load 230 be using yellow as
It is main.
Certainly, in other parts embodiment, in a certain period of time, if flowing through the electricity of first LED load 231
When stream ratio is equal to the current ratio for flowing through second LED load 232, color shown by the LED load 230 for institute
State the mixing that the first LED load 231 corresponds to shown color and shown color corresponding with second LED load 232
Color.
Therefore, in a certain period of time, by exchanging the control of color control device 210, thus it is possible to vary flow through the first LED
The current ratio of 231 and second LED load 232 of load, and then change the effect of 230 display color of LED load.
The switch module 220 includes first switch 221 and second switch 222.(not shown) in one implementation,
First switch 221 is the first triode, and second switch 222 is the second triode；The (not shown) in another implementation, the
One switch 221 is first silicon-controlled (also known as thyristor), and second switch 222 is second silicon-controlled (also known as thyristor).The 3rd
In kind implementation (as shown in Figure 5), first switch 221 is the 3rd metal-oxide-semiconductor M3, and second switch 222 is the 4th metal-oxide-semiconductor M4.
In the other parts embodiment of utility model, first switch 221 and second switch 222 can also be the freedom of three kinds of implementations
Combination, for example, first switch 221 is triode, second switch 222 is silicon-controlled.Certainly, first switch 221 and second switch
222 can also select the miscellaneous part for the effect of being turned on or off, however it is not limited to above-mentioned three kinds of modes.
In the embodiment of the utility model, illustrated by taking the third implementation as an example.The 3rd metal-oxide-semiconductor M3 and
The 4th metal-oxide-semiconductor M4 can play the role of being turned on or off, the first switch 221 and first LED load 231
It is electrically connected, the second switch 222 is electrically connected with second LED load 232.The first control signal control described first
The on or off of switch 221, the electric current of first LED load 231 is flowed through with control；The second control signal controls institute
The on or off of second switch 222 is stated, the electric current of second LED load 232 is flowed through with control.
Since the first control signal and second control signal are complementary control signal, so that at certain for the moment
Carve, when the 3rd metal-oxide-semiconductor M3 for conducting, and the 4th metal-oxide-semiconductor M4 for cut-off, at this time, the electric current for flowing through the first LED load 231 is
100%, and the electric current for flowing through the second LED load 232 is zero；Alternatively, at a time, when the 3rd metal-oxide-semiconductor M3 is cut-off, and the
Four metal-oxide-semiconductor M4 are conducting, and at this time, the electric current for flowing through the first LED load 231 is zero, and flow through the electric current of the 2nd LED loads 232
For 100%.It is noted that the color shown by the utility model adjustment LED load refers to that the LED is born in a certain amount of time
Carry 230 and correspond to shown color, rather than refer to the at a time LED load 230 and correspond to shown color.
It will be described in detail all parts in the toning controller 210 below.
With continued reference to shown in Fig. 2 and Fig. 3, in embodiment described in the utility model, the toning controller 210 includes：
First signal conversion unit 211 and toning control unit 212；First signal conversion unit 211 is according to described the of reception
One pulse width modulating signal PWM1 generates first voltage signal and second voltage signal；The toning control unit 212, is used for
The first control signal and second control signal are generated according to the first voltage signal and second voltage signal respectively.
Wherein, first signal conversion unit 211 includes a phase inverter nor gate 2111 and a voltage generating unit
2112；The phase inverter nor gate 2111 is used to reversely export external input signal to voltage generating unit 2112 afterwards.Herein,
The external input signal refers to the first pulse width modulating signal PWM1.The voltage generating unit 2112 is electrically connected a job
Voltage VH (shown in Figure 5), according to the external input signal and it is anti-phase after external input signal generation first voltage letter
Number and second voltage signal.Herein, the operating voltage VH can be obtained from voltage source, or the positive input terminal from LED load
Directly obtain, or (as shown in Figure 5) is obtained by series resistance R3 and capacitance C1 partial pressures.
The voltage generating unit 2112 includes：First metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2, the grid of the first metal-oxide-semiconductor M1
Pole connects the output terminal of the phase inverter nor gate 2111, and the grid of the second metal-oxide-semiconductor M2 receives first pulse width
The drain electrode of modulated signal PWM1, the first metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2 are connected to the operating voltage VH, and described first
The source electrode ground terminal of metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2.
In addition, the voltage generating unit 2112 can also include：The first metal-oxide-semiconductor M1 drain electrodes pass through first resistor R1
The operating voltage VH is connected to, and the drain electrode of the second metal-oxide-semiconductor M2 is connected to the operating voltage VH by second resistance R2.When
So, in the other parts embodiment of the utility model, the voltage generating unit 2112 can not include first resistor R1 and
Second resistance R2；Alternatively, the voltage generating unit 2112 can include first resistor R1 or second resistance R2.
In embodiment described in the utility model, the toning control unit 212 includes a rest-set flip-flop 2121 and (or is
RS Flip-Flop) and secondary signal converting unit 2122.The set end of the rest-set flip-flop 2121 connects the first voltage
Signal, the reset terminal of the rest-set flip-flop 2121 connect the second voltage signal, and the output terminal of the rest-set flip-flop 2121 is defeated
Go out first control signal, the positive input terminal of the power supply of the rest-set flip-flop 2121 connects an operating voltage VH, negative input end
Connect a reference ground VL.The secondary signal converting unit 2122 connects the output terminal of the rest-set flip-flop 2121, for basis
First control signal generates the second control signal.Herein, the secondary signal converting unit 2122 is a phase inverter or non-
Door.
By the setting and connection of above-mentioned component, the first arteries and veins that the toning controller 210 can be caused to be received according to it
Rush bandwidth modulation signals PWM1 and generate first control signal and second control signal, and the first control signal and the second control
Signal processed is complementary control signal.Furthermore, the first pulse width tune that the toning controller 210 is received according to it
Signal PWM1 processed and generate complementation first voltage signal and second voltage signal, and then correspondingly produce complementation first control
Signal and second control signal.
Then, when the first voltage signal is high level, the first control signal is high level, second control
Signal processed is low level；When the first voltage signal is low level, the first control signal is low level, described second
Control signal is high level.In addition, shown in Figure 4, the first voltage signal (I in such as Fig. 4M3) it is with the first pulse
The change of bandwidth modulation signals PWM1 and change, if the first pulse width modulating signal PWM1 is high level, described first
Voltage signal is high level；If the first pulse width modulating signal PWM1 is low level, the first voltage signal is low
Level；And the second voltage signal (I in such as Fig. 4M4) it is phase with the change of the first pulse width modulating signal PWM1
Instead change, if the first pulse width modulating signal PWM1 is high level, the second voltage signal is low level；If
When first pulse width modulating signal PWM1 is low level, the second voltage signal is high level.Therefore so that at certain for the moment
Carve, when the 3rd metal-oxide-semiconductor M3 for conducting, and the 4th metal-oxide-semiconductor M4 for cut-off, at this time, flow through the first LED load 231 electric current be
100%, and the electric current for flowing through the second LED load 232 is zero；Alternatively, at a time, when the 3rd metal-oxide-semiconductor M3 is cut-off, and the
Four metal-oxide-semiconductor M4 are conducting, and at this time, the electric current for flowing through the first LED load 231 is zero, and flows through the electric current of the second LED load 232
For 100%.
In addition, in embodiment described in the utility model, it is preferable that the toning controller further includes a waveform adjuster
213, for output after the external input signal shaping to (the i.e. phase inverter nor gate of the first signal conversion unit 211
2111 and voltage generating unit 2112).In such manner, it is possible to the so that electricity of the first received pulse width modulating signal PWM1
Corrugating is adjusted to square-wave signal.In practical applications, waveform adjuster 213 can use Schmitt trigger (to be also known as this
Close spy's NOT gate).
The utility model also provides a kind of toning control chip (not shown), it includes above-mentioned any toning controller.
In addition, referring to Fig. 5 and with reference to shown in Fig. 2-4, the utility model also provides a kind of light modulation toning LED drive control electricity
Road, it includes：One rectifier bridge 510, the rectifier bridge 510 are electrically connected to an alternating current input power supplying AC；LED load 511, it is described
LED load 511 includes the first LED load 5111 and the second LED load 5112, and (it is respectively with the label 231 and 232 in Fig. 2
Identical component), above-mentioned two paths of LED load 511 is connected in parallel to the rectifier bridge 510；One switch module 512, the switch module
512 are respectively and electrically connected to 5111 and second LED load 5112 of the first LED load；One toning controller 513 is (herein
The structure of controller 513 of mixing colours and the structure of the toning controller 210 shown in Fig. 2-3 are identical), the toning controller
513 are respectively and electrically connected to the switch module 512 and the rectifier bridge 510；One constant-current driving power supply 514, the constant current are driven
Dynamic power supply 514 is respectively and electrically connected to the switch module 512, the toning controller 513 and the rectifier bridge 510；Wherein,
The constant-current driving power supply 514 accesses one second pulse-width adjustment control signal PWM2, and is controlled according to second pulse-width adjustment
Signal PWM2 controls the size of current for flowing through the LED load 511；The first arteries and veins that the toning controller 513 is received according to it
Rush bandwidth modulation signals PWM1 generation first control signals and second control signal and export to the switch module 512, it is described
First control signal and second control signal are complementary control signal；The switch module 512 is according to the control of reception
Signal conduction or shut-off, the electric current of first LED load 5111 and second LED load 5112 is flowed through with adjustment.
Wherein, the constant-current driving power supply 514 is switching type power supply, or Linear CCS, but not limited to this.Institute
State constant-current driving power supply 514 be used for control flow through the first LED load 5111 and the second LED load 5112 electric current size, from
And adjust the bright degree of first LED load 5111 and the bright degree of the second LED load 5112.
The toning controller 513 is configured as distribution and flows through 5111 and second LED load 5112 of the first LED load
Current ratio.Since first LED load 5111 and second LED load 5112 are born for two different colors of LED
Carry, therefore, in a certain period of time, the 2nd LED is flowed through when the current ratio for flowing through first LED load 5111 is more than
During the current ratio of load 5112, the color shown by the LED load 511 is with corresponding with first LED load 5111
Based on shown color.For example, the color of the first LED load 5111 (being made of the LED light string of multiple white lights) display
For white, the color of the second LED load 5112 (being made of the LED light string of multiple yellow lights) display is yellow, at certain for the moment
Between in section, flow through the electric currents of the 2nd LED loads 5112 when the current ratio for flowing through first LED load 5111 is more than
During ratio, the color shown by the LED load 511 is based on white.Conversely, the face shown by the LED loads 511
Color is based on yellow.
Certainly, in other parts embodiment, in a certain period of time, if flowing through first LED load 5111
When current ratio is equal to the current ratio for flowing through second LED load 5112, the color shown by the LED load 511 is
Shown color corresponding with first LED load 5111 and correspond to shown color with second LED load 5112
Secondary colour.
Therefore, because the toning controller 513 receives the first pulse adjustment control signal PWM1, therefore, pass through adjusting
The duty cycle of first pulse-width adjustment control signal PWM1, is controlled with exchanging color control device 513, so as to change sometime
The current ratio of 5111 and second LED load 5112 of the first LED load is flowed through in section, and then changes the LED and bears
Carry the effect of 511 display colors.That is, the first pulse width modulating signal PWM1 can adjust the first LED loads
5111 and the mixed proportion of the second color shown by LED load 5112.For example, the first pulse width modulating signal PWM1
Duty cycle be 90%, then it represents that it is on that the first LED load 5111 (display white light), which has 90% time in a certain period of time,
10% time of second LED load 5112 (display yellow light) in the certain time period is on.Then, it is described sometime
In section, the inclined white light of color of the display of LED load 511.And if the duty of the first pulse width modulating signal PWM1
Smaller, the most of the time of the second LED load 5112 is the inclined yellow light of color open-minded, then that the LED load 511 is shown.
Furthermore, in embodiment described in the utility model, the switch module 512 includes：First switch and
Two switches.(not shown) in one implementation, first switch 221 are the first triode, and second switch 222 is the two or three pole
Pipe；The (not shown) in another implementation, first switch 221 are first silicon-controlled (also known as thyristor), second switch 222
For second silicon-controlled (also known as thyristor).In the third implementation (as shown in Figure 5), first switch 221 is the 3rd metal-oxide-semiconductor
M3, second switch 222 are the 4th metal-oxide-semiconductor M4.
In the embodiment of the utility model, using first switch as the 3rd metal-oxide-semiconductor M3, second switch is the 4th metal-oxide-semiconductor M4
Exemplified by illustrate, its structure is identical with the first switch shown in Fig. 2-3 and second switch.The first switch and described first
LED loads 5111 are electrically connected, and the second switch is electrically connected with second LED load 5112；The first control signal control
The on or off of the first switch is made, the electric current of first LED load 5111 is flowed through with control；The second control letter
The on or off of number control second switch, the electric current of second LED load 5112 is flowed through with control.
Since the first control signal and second control signal are complementary control signal, so that at certain for the moment
Carve, when the 3rd metal-oxide-semiconductor M3 for conducting, and the 4th metal-oxide-semiconductor M4 for cut-off, at this time, the electric current for flowing through the first LED load 5111 is
100%, and the electric current for flowing through the second LED load 5112 is zero；Alternatively, at a time, when the 3rd metal-oxide-semiconductor M3 is cut-off, and
4th metal-oxide-semiconductor M4 is conducting, and at this time, the electric current for flowing through the first LED load 5111 is zero, and flows through the second LED load 5112
Electric current is 100%.It is noted that the utility model adjustment LED load shown by color refer to it is described in a certain amount of time
LED load 511 corresponds to shown color, rather than refers to the at a time LED load 511 and correspond to shown color.
With continued reference to Fig. 5, and with reference to shown in Fig. 2 to Fig. 4, the toning shown in the structure and Fig. 3 of the toning controller 513
The structure of controller 210 is identical.Therefore, the toning controller 513 includes：First signal conversion unit 211, toning control
Unit 212 processed；First signal conversion unit 211 is generated according to the first pulse width modulating signal PWM1 of reception
First voltage signal and second voltage signal；The toning control unit 212, for according to the first voltage signal and second
Voltage signal generates the first control signal and second control signal respectively.
Wherein, first signal conversion unit 211 includes a phase inverter nor gate 2111 and a voltage generating unit
2112；The phase inverter nor gate 2111 is used to reversely export external input signal to voltage generating unit 2112 afterwards；It is described
Voltage generating unit 2112 electrically connects an operating voltage VH, according to external input signal and it is anti-phase after external input signal generate
First voltage signal and second voltage signal, wherein the operating voltage VH is to be obtained from voltage source, or from LED load just
Input terminal is directly obtained or obtained by series resistance R3 and capacitance C1 partial pressures.
The voltage generating unit 2112 includes：First metal-oxide-semiconductor M1 and the second metal-oxide-semiconductor M2, the grid of the first metal-oxide-semiconductor M1
Pole connects the output terminal of the phase inverter nor gate 2111, and the grid of the second metal-oxide-semiconductor M2 receives first pulse width
The drain electrode of modulated signal PWM1, the first metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2 are connected to the operating voltage VH, and described first
The source electrode ground terminal of metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2.
In addition, the voltage generating unit 2112 further includes：The first metal-oxide-semiconductor M1 drain electrodes are connected by first resistor R1
Drain electrode to the operating voltage VH and the second metal-oxide-semiconductor M2 is connected to the operating voltage VH by second resistance R2.
In embodiment described in the utility model, the toning control unit 212 includes a rest-set flip-flop 2121 and second
Signal conversion unit 2122, the set end of the rest-set flip-flop 2121 connect the first voltage signal, the rest-set flip-flop
2121 reset terminal connects the second voltage signal, the output terminal output first control signal of the rest-set flip-flop 2121, institute
The positive input terminal for stating the power supply of rest-set flip-flop 2121 connects the operating voltage VH, and negative input end connects a reference ground VL,
Wherein described reference ground VL is to be obtained from one end of first switch 221, second switch 222；The secondary signal converting unit
The output terminal of the 2122 connection rest-set flip-flops 2121, for generating the second control signal according to first control signal.This
Place, the secondary signal converting unit 2122 is a phase inverter nor gate.
In other implementations, the toning control unit 212 can also use other logical devices such as latch and
Peripheral circuit is realized.
Wherein, when first switch 221 is the first triode, when second switch 222 is the second triode, reference ground VL is the
One triode, the emitter of the second triode obtain；When first switch 221 is first silicon-controlled (also known as thyristor), second opens
Close 222 for second silicon-controlled (also known as thyristor) when, reference ground VL be from first silicon-controlled, the second silicon-controlled cathode (or
It is second plate) obtain；When first switch 221 is the 3rd metal-oxide-semiconductor M3, and second switch 222 is the 4th MOS pipe M4, such as Fig. 5
Shown, reference ground VL is to be obtained from the source electrode of the 3rd metal-oxide-semiconductor M3, the 4th metal-oxide-semiconductor M4.
By the setting and connection of above-mentioned component, the first arteries and veins that the toning controller 513 can be caused to be received according to it
Rush bandwidth modulation signals PWM1 and generate first control signal and second control signal, and the first control signal and the second control
Signal processed is complementary control signal.Furthermore, the first pulse width tune that the toning controller 513 is received according to it
Signal PWM1 processed and generate complementation first voltage signal and second voltage signal, and then correspondingly produce complementation first control
Signal and second control signal.
Then, when the first voltage signal is high level, the first control signal is high level, second control
Signal processed is low level；When the first voltage signal is low level, the first control signal is low level, described second
Control signal is high level.In addition, reference can be made to shown in Fig. 4, the first voltage signal (I in such as Fig. 4M3) it is with the first arteries and veins
Rush the change of bandwidth modulation signals PWM1 and change, if the first pulse width modulating signal PWM1 is high level, described
One voltage signal is high level；If the first pulse width modulating signal PWM1 is low level, the first voltage signal is
Low level；And the second voltage signal (I in such as Fig. 4M4) be with the change of the first pulse width modulating signal PWM1 and
Change on the contrary, if the first pulse width modulating signal PWM1 is high level, the second voltage signal is low level；Such as
When the first pulse width modulating signal of fruit PWM1 is low level, the second voltage signal is high level.So so that a certain
Moment, when the 3rd metal-oxide-semiconductor M3 for conducting, and the 4th metal-oxide-semiconductor M4 for cut-off, at this time, flow through the first LED load electric current be
100%, and the electric current for flowing through the second LED load is zero；Alternatively, at a time, when the 3rd metal-oxide-semiconductor M3 is cut-off, and the 4th
Metal-oxide-semiconductor M4 is conducting, and at this time, the electric current for flowing through the first LED load 5111 is zero, and flows through the electric current of the second LED load 5112
For 100%.
In addition, in embodiment described in the utility model, it is preferable that the toning controller 5111 equally further includes a ripple
Shape adjuster 213, for after external input signal shaping output to first signal conversion unit 211 (i.e. phase inverter or
NOT gate 2111 and voltage generating unit 2112).In such manner, it is possible to so that the first received pulse width modulating signal PWM1
Voltage waveform be adjusted to square-wave signal.
Light modulation toning LED drive control circuits described in the utility model adjust the bright of LED load by pwm signal all the way
Degree, another way pwm signal produce two-way complementary control signal to switch the fet switch being connected in LED load, and
By adjusting the duty cycle of another way pwm signal, to distribute the current ratio of two paths of LED load, and then toning is dimmed
Effect.In addition, constant-current driving power supply all the way is used only in the whole light modulation toning LED drive control circuits, coordinate the toning
Controller, it is possible to reach the effect of light modulation toning, and cause the light modulation toning LED drive control circuits that there is volume
Small, the features such as cost is low.
In addition, the utility model also provides a kind of toning control chip (not shown), the control chip includes above-mentioned
Toning controller described in one.
Meanwhile the utility model also provides a kind of LED device (not shown), the equipment includes any of the above-described tune
Color control device.As described above, details are not described herein for all parts and its connection relation of the toning controller.
Equally, the utility model also provides a kind of LED device (not shown), and the equipment includes above-mentioned toning control core
Piece.The structure of the toning control chip as described above, also repeats no more herein.
Equally, the utility model also provides a kind of LED device (not shown), and the equipment includes any of the above-described tune
Light toning LED drive control circuits.It is described light modulation toning LED drive control circuits structure as described above, herein also no longer
Repeat.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
Art personnel, on the premise of the utility model principle is not departed from, can also make some improvements and modifications, these improvements and modifications
Also it should be regarded as the scope of protection of the utility model.
Claims (26)
1. one kind toning controller, is electrically connected, the LED load includes what is be connected in parallel by a switch module with LED load
First LED load and the second LED load；It is characterized in that,
The first pulse width modulating signal generation first control signal and second that the toning controller is received according to it controls
Signal is simultaneously exported to the switch module, and the first control signal and second control signal are complementary control signal；It is described
Switch module is turned on or turned off according to the control signal of reception, and first LED load and described the are flowed through with adjustment
The electric current of two LED loads.
2. toning controller according to claim 1, it is characterised in that the switch module includes first switch and second
Switch, the first switch are electrically connected with first LED load, and the second switch is electrically connected with second LED load；
The first control signal controls the on or off of the first switch, and the electric current of first LED load is flowed through with control；
The second control signal controls the on or off of the second switch, and the electric current of second LED load is flowed through with control.
3. toning controller according to claim 1, it is characterised in that the toning controller is configured as distribution and flows through
The current ratio of first LED load and the second LED load.
4. toning controller according to claim 1, it is characterised in that the toning controller includes：First signal turns
Change unit and toning control unit；First signal conversion unit is given birth to according to first pulse width modulating signal of reception
Into first voltage signal and second voltage signal；The toning control unit, for according to the first voltage signal and second
Voltage signal generates the first control signal and second control signal respectively.
5. toning controller according to claim 4, it is characterised in that it is anti-phase that first signal conversion unit includes one
Device nor gate and a voltage generating unit；The phase inverter nor gate, which is used to reversely export external input signal afterwards to voltage, gives birth to
Into unit；The voltage generating unit is electrically connected an operating voltage, according to the external input signal and it is anti-phase after outside
Input signal generates first voltage signal and second voltage signal.
6. toning controller according to claim 5, it is characterised in that the voltage generating unit includes：First MOS
Pipe, the second metal-oxide-semiconductor, the grid of first metal-oxide-semiconductor connect the output terminal of the phase inverter nor gate, second metal-oxide-semiconductor
Grid receives first pulse width modulating signal, and the drain electrode of first metal-oxide-semiconductor, the second metal-oxide-semiconductor is connected to the work
Voltage, first metal-oxide-semiconductor, the source electrode ground terminal of the second metal-oxide-semiconductor.
7. toning controller according to claim 6, it is characterised in that the voltage generating unit includes：Described first
Metal-oxide-semiconductor drain electrode is connected to the operating voltage by first resistor, and/or the drain electrode of the second metal-oxide-semiconductor is connected by second resistance
To the operating voltage.
8. toning controller according to claim 5, it is characterised in that the toning controller further includes waveform adjustment
Device, for output after external input signal shaping to first signal conversion unit.
9. toning controller according to claim 4, it is characterised in that the toning control unit includes a rest-set flip-flop
With secondary signal converting unit, the set end of the rest-set flip-flop connects the first voltage signal, and the rest-set flip-flop is answered
Position end connects the second voltage signal, and the output terminal of the rest-set flip-flop exports first control signal, the rest-set flip-flop
The positive input terminal of power supply connects an operating voltage, and negative input end connects a reference ground；The secondary signal converting unit connects
The output terminal of the rest-set flip-flop is connect, for generating the second control signal according to first control signal.
10. toning controller according to claim 9, it is characterised in that when the first voltage signal is high level,
The first control signal is high level, and the second control signal is low level；When the first voltage signal is low level
When, the first control signal is low level, and the second control signal is high level.
11. toning controller according to claim 10, it is characterised in that the secondary signal converting unit is anti-phase for one
Device nor gate.
12. one kind toning control chip, it is characterised in that including any toning control of claim 1-11 any one of them
Device.
13. one kind light modulation toning LED drive control circuits, it is characterised in that including：
One rectifier bridge, the rectifier bridge are electrically connected to an alternating current input power supplying；
LED load, the LED load include the first LED load and the second LED load, and the two paths of LED load is connected in parallel to described
Rectifier bridge；
One switch module, the switch module are respectively and electrically connected to first LED load and the second LED load；
One toning controller, the toning controller are respectively and electrically connected to the switch module and the rectifier bridge；
One constant-current driving power supply, the constant-current driving power supply are respectively and electrically connected to the switch module, the toning controller
And the rectifier bridge；
Wherein, the constant-current driving power supply accesses one second pulse-width adjustment control signal, and according to the second pulse-width adjustment control
Signal control processed flows through the size of current of the LED load；
The first pulse width modulating signal generation first control signal and second that the toning controller is received according to it controls
Signal is simultaneously exported to the switch module, and the first control signal and second control signal are complementary control signal；It is described
Switch module is turned on or turned off according to the control signal of reception, and first LED load and described the are flowed through with adjustment
The electric current of two LED loads.
14. circuit according to claim 13, it is characterised in that the switch module includes：First switch and second is opened
Close, the first switch is electrically connected with first LED load, and the second switch is electrically connected with second LED load；Institute
The on or off that first control signal controls the first switch is stated, the electric current of first LED load is flowed through with control；Institute
The on or off that second control signal controls the second switch is stated, the electric current of second LED load is flowed through with control.
15. circuit according to claim 13, it is characterised in that the toning controller be configured as distribution flow through it is described
The current ratio of first LED load and the second LED load.
16. circuit according to claim 13, it is characterised in that the toning controller includes：The conversion of first signal is single
Member, toning control unit；First signal conversion unit is according to first pulse width modulating signal of reception generation the
One voltage signal and second voltage signal；The toning control unit, for according to the first voltage signal and second voltage
Signal generates the first control signal and second control signal respectively.
17. circuit according to claim 16, it is characterised in that first signal conversion unit include a phase inverter or
NOT gate and a voltage generating unit；The phase inverter nor gate, which is used to reversely export external input signal afterwards to voltage, generates list
Member；The voltage generating unit electrically connects an operating voltage, according to the external input signal and it is anti-phase after external input
Signal generation first voltage signal and second voltage signal, wherein the operating voltage is to be obtained from voltage source, or bear from LED
The positive input terminal of load is directly obtained or obtained by series resistance and capacitance partial pressure.
18. circuit according to claim 17, it is characterised in that the voltage generating unit includes：First metal-oxide-semiconductor and
Two metal-oxide-semiconductors, the grid of first metal-oxide-semiconductor connect the output terminal of the phase inverter nor gate, and the grid of second metal-oxide-semiconductor connects
First pulse width modulating signal is received, the drain electrode of first metal-oxide-semiconductor, the second metal-oxide-semiconductor is connected to the operating voltage, institute
State the source electrode ground terminal of the first metal-oxide-semiconductor, the second metal-oxide-semiconductor.
19. circuit according to claim 17, it is characterised in that the voltage generating unit includes：First metal-oxide-semiconductor drains
The operating voltage is connected to by first resistor, and/or the drain electrode of the second metal-oxide-semiconductor is connected to the work by second resistance
Voltage.
20. circuit according to claim 17, it is characterised in that the circuit includes a waveform adjuster, for external
Exported after portion's input signal shaping to first signal conversion unit.
21. circuit according to claim 16, it is characterised in that the toning control unit includes a rest-set flip-flop and the
Binary signal converting unit, the set end of the rest-set flip-flop connect the first voltage signal, the reset terminal of the rest-set flip-flop
Connect the second voltage signal, the output terminal output first control signal of the rest-set flip-flop, the power supply of the rest-set flip-flop
The positive input terminal connection operating voltage of power supply, negative input end connects a reference ground, wherein the reference ground is from first switch, the
One end of two switches obtains；The secondary signal converting unit connects the output terminal of the rest-set flip-flop, for according to the first control
Second control signal described in signal generation processed.
22. circuit according to claim 17, it is characterised in that described when the first voltage signal is high level
First control signal is high level, and the second control signal is low level；When the first voltage signal is low level, institute
It is low level to state first control signal, and the second control signal is high level.
23. circuit according to claim 21, it is characterised in that the secondary signal converting unit is a phase inverter or non-
Door.
24. a kind of LED device, it is characterised in that the equipment includes any toning control in claim 1~11
Device.
25. a kind of LED device, it is characterised in that the equipment includes the toning control chip described in claim 12.
26. a kind of LED device, it is characterised in that the equipment includes any light modulation toning in claim 13-23
LED drive control circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238355.XU CN207369359U (en) | 2017-09-26 | 2017-09-26 | Toning controller, toning control chip, light modulation toning LED drive control circuits and LED device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238355.XU CN207369359U (en) | 2017-09-26 | 2017-09-26 | Toning controller, toning control chip, light modulation toning LED drive control circuits and LED device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207369359U true CN207369359U (en) | 2018-05-15 |
Family
ID=62350062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721238355.XU Withdrawn - After Issue CN207369359U (en) | 2017-09-26 | 2017-09-26 | Toning controller, toning control chip, light modulation toning LED drive control circuits and LED device |
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| Country | Link |
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| CN (1) | CN207369359U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107567144A (en) * | 2017-09-26 | 2018-01-09 | 上海晶丰明源半导体股份有限公司 | Toning controller, toning control chip and light modulation toning LED drive control circuits |
-
2017
- 2017-09-26 CN CN201721238355.XU patent/CN207369359U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107567144A (en) * | 2017-09-26 | 2018-01-09 | 上海晶丰明源半导体股份有限公司 | Toning controller, toning control chip and light modulation toning LED drive control circuits |
| CN107567144B (en) * | 2017-09-26 | 2023-12-26 | 上海晶丰明源半导体股份有限公司 | Color mixing controller, color mixing control chip and dimming and color mixing LED driving control circuit |
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