CN107820347A - A kind of driving power and lighting device - Google Patents
A kind of driving power and lighting device Download PDFInfo
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- CN107820347A CN107820347A CN201711244187.XA CN201711244187A CN107820347A CN 107820347 A CN107820347 A CN 107820347A CN 201711244187 A CN201711244187 A CN 201711244187A CN 107820347 A CN107820347 A CN 107820347A
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- 238000005259 measurement Methods 0.000 claims abstract description 87
- 238000001914 filtration Methods 0.000 claims abstract description 46
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 42
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 239000003381 stabilizer Substances 0.000 claims description 41
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- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000005286 illumination Methods 0.000 description 9
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
Abstract
The embodiments of the invention provide a kind of driving power and lighting device, the driving power includes rectification filtering module, sampling module, control module, also include input voltage measurement module and limit power model, the output end of the input connection rectification filtering module of input voltage measurement module, direct current for being exported to rectification filtering module carries out voltage detecting, obtains input voltage measurement signal；The detection voltage input end of the output end connection limit power model of input voltage measurement module, the output control signal that limit power model is adjusted according to input voltage measurement signal generation to reference voltage value；The input of the output end link control module of power model is limited, control module is adjusted according to output control signal to reference voltage value.Driving power provided in an embodiment of the present invention can adjust the power of load, realize semi-load or underloading output, realize wide-voltage range input, inexpensive and high performance purpose.
Description
Technical field
The present invention relates to intelligent lighting technical field, particularly a kind of driving power and lighting device.
Background technology
Global line voltage mainly has 220V and 110V two types, and LED lamp on the market, common are two at present
Class, it is narrow voltage range input and wide-voltage range input respectively.
Narrow voltage range input is typically based on single voltage, such as 176-264Vac or 90-130Vac, meets different electricity
Net demand, this driving cost is low, efficiency high, but is only applicable single power network scope.Wide-voltage range input is mainly 90-
305Vac, meets the needs of global power network, this driving cost is high, and efficiency is low when low pressure inputs, but strong applicability.
In practical application, many application requirements wide-voltage ranges, it is desirable in 176-264Vac, full power exports, but other
Then allow semi-load or underloading to export in input voltage range, now just need one kind both to meet wide-voltage range, at the same cost it is low,
The technical scheme of efficiency high.
The content of the invention
In view of the above problems, it is proposed that the present invention so as to provide one kind overcome above mentioned problem or at least in part solve on
The driving power and lighting device of problem are stated, the driving power can realize that univoltage input light fixture continues when low-voltage inputs
Illumination, by detecting input voltage come adjust automatically reference voltage value, and then the power of adjustment load is realized, realize Width funtion
Scope inputs, inexpensive and high performance purpose.
The embodiments of the invention provide a kind of driving power, for realizing that univoltage input light fixture is held when low-voltage inputs
Continuous illumination, the driving power include rectification filtering module, sampling module, control module, the input of the rectification filtering module
Terminate into AC power, rectifying and wave-filtering treatment and supplied LED load is carried out to the alternating current of AC power output；The sampling mold
The output end of the input connection LED load of block, for gathering the current signal of LED load, obtains current sample magnitude of voltage simultaneously
Output；The output end of the sampling module connects the input of the control module, and the control module is by the current sample
Magnitude of voltage supplies the direct current of LED load according to comparative result compared with reference voltage value to the rectification filtering module
Magnitude of voltage be adjusted, the driving power also includes：Input voltage measurement module and limit power model；
The input of the input voltage measurement module connects the output end of the rectification filtering module, for described whole
The direct current for flowing filtration module output carries out voltage detecting, obtains input voltage measurement signal；The input voltage measurement module
Output end connection it is described limit power model detection voltage input end, it is described limit power model according to the input voltage measurement
The output control signal that signal generation is adjusted to the reference voltage value；Described in the output end connection of the limit power model
The input of control module, the control module are adjusted according to the output control signal to the reference voltage value.
Alternatively, the input voltage measurement module includes：First resistor unit and second resistance unit；
One end of the first resistor unit is the input of the input voltage measurement module, the first resistor unit
One end of the other end and the second resistance unit connect the output end to form the input voltage measurement module altogether, described second
The primary ground of another termination of resistance unit.
Alternatively, the limit power model includes：3rd resistor unit, the first voltage-stabiliser tube, the second voltage-stabiliser tube, the 4th resistance
Unit and switch metal-oxide-semiconductor；
One end of the 3rd resistor unit is the direct-flow input end of the limit power model, the 3rd resistor unit
The other end is connected with the negative electrode of first voltage-stabiliser tube, the drain terminal of the switch metal-oxide-semiconductor；The anode of first voltage-stabiliser tube and institute
The source for stating switch metal-oxide-semiconductor connects primary ground；
The negative electrode of second voltage-stabiliser tube is the detection voltage input end of the limit power model, second voltage-stabiliser tube
Anode is connected with one end of the 4th resistance unit, the grid end of the switch metal-oxide-semiconductor；The other end of 4th resistance unit
Connect primary ground.
Alternatively, the direct-flow input end of the limit power model connects the output end of the rectification filtering module.
Alternatively, the drain terminal of the other end of the 3rd resistor unit and the switch metal-oxide-semiconductor connects to form the limit work(altogether
First control terminal of rate module.
Alternatively, the first control terminal of the limit power model is the output end for limiting power model；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is less than default electricity
During pressure value, second voltage-stabiliser tube can not be breakdown, and the switch metal-oxide-semiconductor is not turned on, the first control of the limit power model
End output high level is as the output control signal for reducing the reference voltage value；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is more than described pre-
If during magnitude of voltage, second voltage-stabiliser tube is breakdown, the switch metal-oxide-semiconductor conducting, the first control terminal of the limit power model
Low level is exported as the output control signal not being adjusted to the reference voltage value.
Alternatively, the limit power model also includes：Output control signal generation unit；
First control terminal of the input connection limit power model of the output control signal generation unit, output end
For the output end of the limit power model；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is less than default electricity
During pressure value, second voltage-stabiliser tube can not be breakdown, and the switch metal-oxide-semiconductor is not turned on, the first control of the limit power model
End is in high level state, and the output control signal generation unit generation reduces the output control letter of the reference voltage value
Number；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is more than described pre-
If during magnitude of voltage, second voltage-stabiliser tube is breakdown, the switch metal-oxide-semiconductor conducting, the first control terminal of the limit power model
In low level state, the output control signal generation unit generation expression is not adjusted defeated to the reference voltage value
Go out control signal.
Alternatively, the limit power model also includes：Photoisolator and the 5th resistance unit；
The first end of the photoisolator connects the other end of the 3rd resistor unit, and second terminates primary ground, the
Three termination secondary grounds, the 4th end is connected with one end of the 5th resistance unit；The other end of 5th resistance unit with it is straight
Power supply connection is flowed, and forms the second control terminal of the limit power model.
Alternatively, the second control terminal of the limit power model is the output end for limiting power model；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is less than default electricity
During pressure value, second voltage-stabiliser tube can not be breakdown, and the switch metal-oxide-semiconductor is not turned on, the second control of the limit power model
End output low level is as the output control signal for reducing the reference voltage value；
When the input voltage measurement module detects that the magnitude of voltage of the input voltage measurement signal is more than described preset
During magnitude of voltage, second voltage-stabiliser tube is breakdown, the switch metal-oxide-semiconductor conducting, and the second control terminal of the limit power model is defeated
Go out high level as the output control signal not being adjusted to the reference voltage value.
Alternatively, the limit power model also includes：Output control signal generation unit；
Second control terminal of the input connection limit power model of the output control signal generation unit, output end
For the output end of the limit power model；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is less than default electricity
During pressure value, second voltage-stabiliser tube can not be breakdown, and the switch metal-oxide-semiconductor is not turned on, the second control of the limit power model
End is in low level state, and the output control signal generation unit generation reduces the output control letter of the reference voltage value
Number；
When the input voltage measurement module detects that the magnitude of voltage of the input voltage measurement signal is more than described preset
During magnitude of voltage, second voltage-stabiliser tube is breakdown, the switch metal-oxide-semiconductor conducting, at the second control terminal of the limit power model
In high level state, the output control signal generation unit generation represents the output not being adjusted to the reference voltage value
Control signal.
Alternatively, the preset voltage value is less than or equal in the rated voltage section of univoltage input light fixture most
Small voltage value.
Alternatively, the control module includes PWM controller, and the PWM controller is used for the current sample voltage
Value supplies the electricity of the direct current of LED load according to comparative result compared with reference voltage value to the rectification filtering module
Pressure value is adjusted；The PWM controller is additionally operable to be adjusted the reference voltage value according to the output control signal.
Alternatively, the first control terminal of the limit power model is the output end of the limit power model, is controlled with the PWM
The input connection of device processed；Or
The of the input connection limit power model of output control signal generation unit in the limit power model
One control terminal, the output end of the output control signal generation unit is the output end of the limit power model, is controlled with the PWM
The input connection of device processed.
Alternatively, the control module includes PWM controller and current loop module, one end of the current loop module
It is the input of the control module, the other end is connected with the PWM controller, for by the current sample magnitude of voltage and base
Quasi- magnitude of voltage is compared, and supplies the voltage of the direct current of LED load to the rectification filtering module according to comparative result generation
The adjustment signal that value is adjusted；The PWM controller is used to supply the rectification filtering module according to the adjustment signal
The magnitude of voltage of the direct current of LED load is adjusted；
The current loop module is additionally operable to be adjusted the reference voltage value according to the output control signal.
Alternatively, the second control terminal of the limit power model is the output end for limiting power model, with the electric current
One end connection of loop module；Or
The of the input connection limit power model of output control signal generation unit in the limit power model
Two control terminals, the output end of the output control signal generation unit is the output end for limiting power model, with the electric current
One end connection of loop module.
Alternatively, the control module also includes power conversion modules, the first end connection institute of the power conversion modules
State the output end of rectification filtering module, the second end connects the output end of the PWM controller, three-terminal link LED load it is defeated
Enter end, the magnitude of voltage for performing the direct current for supplying LED load to the rectification filtering module according to comparative result is adjusted
Whole instruction, and the direct current after adjustment magnitude of voltage is supplied into LED load.
The embodiment of the present invention additionally provides a kind of lighting device, including any of the above-described described driving power.
Driving power provided in an embodiment of the present invention, it can realize that univoltage input light fixture persistently shines when low-voltage inputs
Bright, the driving power includes rectification filtering module, sampling module, control module, in addition to input voltage measurement module and limit work(
Rate module, voltage detecting can be carried out by the direct current that input voltage measurement module exports to rectification filtering module, be inputted
Voltage detection signal, then reference voltage value is adjusted according to input voltage measurement signal generation by limit power model defeated
Go out control signal, and then reference voltage value is adjusted according to output control signal by control module, it is negative so as to adjust
The power of load, semi-load or underloading output are realized, realizes wide-voltage range input, inexpensive and high performance purpose.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can
Become apparent, below especially exemplified by the embodiment of the present invention.
According to the accompanying drawings will be brighter to the detailed description of the specific embodiment of the invention, those skilled in the art
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 show the electrical schematic diagram of conventional univoltage input light fixture；
Fig. 2 show the structural representation of driving power according to an embodiment of the invention；
Fig. 3 A show input voltage measurement module according to an embodiment of the invention and limit the circuit structure of power model
Schematic diagram；
Fig. 3 B show input voltage measurement module according to another embodiment of the present invention and limit the circuit knot of power model
Structure schematic diagram；
Fig. 4 show the first structural representation of control module in driving power according to an embodiment of the invention；
Fig. 5 show second of structural representation of control module in driving power according to an embodiment of the invention；
Fig. 6 show the third structural representation of control module in driving power according to an embodiment of the invention；With
And
Fig. 7 show the 4th kind of structural representation of control module in driving power according to an embodiment of the invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Narrow voltage range inputs light fixture, also referred to as univoltage input light fixture, if the scope of input voltage is 176-264Vac,
Illumination phenomenon can not be continued by occurring in some cases, such as network transformer problem, mistake access input voltage etc., these feelings
Condition voltage may all be less than 176Vac, and at this moment LED load occurs that lamp dodges, lamp goes out, and serious meeting causes light fixture product permanent
Property damage.Also, in some special occasions, if losing illumination suddenly, it may appear that than more serious consequence.
The electrical signal of conventional univoltage input light fixture can with as shown in figure 1, it can include rectification filtering module 11,
LED load 12, sampling module 13, control module 14, wherein, the input incoming transport power supply 15 of rectification filtering module 11 is right
The alternating current that AC power 15 exports carries out rectifying and wave-filtering treatment and supplied LED load 12；The input connection of sampling module 13
The output end of LED load 12, for gathering the current signal of LED load 12, obtain current sample magnitude of voltage and export；Sampling mold
The input of the output end link control module 14 of block 13, control module 14 carry out current sample magnitude of voltage and reference voltage value
Comparing, the magnitude of voltage for supplying the direct current of LED load 12 to rectification filtering module 11 according to comparative result is adjusted, so that
Obtain LED load 12 and persistently keep normal work.
In actual applications, sampling module 13 can also be used as control module 14 with the independent design of control module 14
A part, be integrated in a chip, the embodiment of the present invention is not restricted to this.In addition, AC power 15 can be exchange city
Electricity or other AC powers.
Univoltage input light fixture input voltage (that is, rectification filtering module 11 carry out rectifying and wave-filtering processing after export it is straight
Flow electricity voltage) it is abnormal when, situations below typically occurs.
Situation 1, PWM (Pulse Width Modulation, pulse width modulation) controller inspection in control module 14
Input voltage exception is measured, closes PWM controller, output is closed, and lamp goes out, it is impossible to continues to provide illumination.
Situation 2, the PWM controller in control module 14 detect input voltage exception, and PWM controller enters repeated priming
Pattern, output cut in and out, and lamp dodges, it is impossible to continue to provide illumination.
Situation 3, the PWM controller normal work in control module 14, each element in distress in univoltage input light fixture
Work, damaged after over-limit condition, lamp goes out, it is impossible to lasting illumination.
In order to solve the above problems, the embodiments of the invention provide a kind of driving power, can realize that univoltage inputs lamp
Tool persistently illuminates when low-voltage inputs, as shown in Fig. 2 the driving power can include rectification filtering module 11, sampling module
13rd, control module 14, input voltage measurement module 21 and limit power model 22 can also be included, wherein, input voltage measurement mould
The output end of the input connection rectification filtering module 11 of block 21, the direct current for being exported to rectification filtering module 11 carry out electricity
Pressure detection, obtains input voltage measurement signal；The detection of the output end connection limit power model 22 of input voltage measurement module 21
Voltage input end, the output control that limit power model 22 is adjusted according to input voltage measurement signal generation to reference voltage value
Signal；The input of the output end link control module 14 of power model 22 is limited, control module 14 is according to output control signal pair
Reference voltage value is adjusted.
The embodiment of the present invention provides driving power, can realize that univoltage input light fixture persistently shines when low-voltage inputs
Bright, the driving power includes rectification filtering module 11, sampling module 13, control module 14, in addition to input voltage measurement module
21 and limit power model 22, voltage can be carried out by direct current that input voltage measurement module 21 exports to rectification filtering module 11
Detection, obtains input voltage measurement signal, then electric to benchmark according to input voltage measurement signal generation by limit power model 22
The output control signal that pressure value is adjusted, and then reference voltage value is adjusted according to output control signal by control module 14
It is whole, so as to adjust the power of load, semi-load or underloading output are realized, realizes wide-voltage range input, low cost and height
The purpose of performance.
In the alternative embodiment of the present invention, as shown in Figure 3A, input voltage measurement module 21 can include first resistor
Unit 211 and second resistance unit 212.One end of first resistor unit 211 is the input of input voltage measurement module 21, the
The other end of one resistance unit 211 connects the output to form input voltage measurement module 21 altogether with one end of second resistance unit 212
End, the primary ground of another termination of second resistance unit 212.In figure 3 a, input voltage measurement module 21 can also include electric capacity
The other end of C1, electric capacity C1 one end connection first resistor unit 211, another primary ground of termination.
With continued reference to Fig. 3 A, limit power model 22 can include 3rd resistor unit 221, the first voltage-stabiliser tube D1, second steady
Pressure pipe D2, the 4th resistance unit 222 and switch metal-oxide-semiconductor Q1.
One end of 3rd resistor unit 221 be limit power model 22 direct-flow input end, 3rd resistor unit 221 it is another
The drain terminal with the first voltage-stabiliser tube D1 negative electrode, switch metal-oxide-semiconductor Q1 is held to be connected；First voltage-stabiliser tube D1 anode and switch metal-oxide-semiconductor Q1
Source connect primary ground.
Second voltage-stabiliser tube D2 negative electrode be limit power model 22 detection voltage input end, the second voltage-stabiliser tube D2 anode with
One end of 4th resistance unit 222, switch metal-oxide-semiconductor Q1 grid end connection；The primary ground of another termination of 4th resistance unit 222.
Further, in the circuit of Fig. 3 A signals, the direct-flow input end connection rectification filtering module of limit power model 22
11 output end.In an alternate embodiment of the invention, limiting the direct-flow input end of power model 22 can also be connect using other dc sources
Enter.
In the alternative embodiment of the present invention, the other end of 3rd resistor unit 221 connects altogether with switching metal-oxide-semiconductor Q1 drain terminal
The first control terminal of limit power model 22 is formed, " the control point A " illustrated such as Fig. 3 A.
In the alternative embodiment of the present invention, limiting the first control terminal (i.e. " control point A ") of power model 22, be limited power
The output end of module 22.
When the magnitude of voltage for the input voltage measurement signal that input voltage measurement module 21 detects is less than preset voltage value,
Second voltage-stabiliser tube D2 can not be breakdown, and switch metal-oxide-semiconductor Q1 is not turned on, and the first control terminal output high level of limit power model 22 is made
To reduce the output control signal of reference voltage value, the defeated of reference voltage value is reduced so as to limit the output of the output end of power model 22
Go out control signal, control module 14 carries out reduction adjustment according to the output control signal to reference voltage value.
When the magnitude of voltage for the input voltage measurement signal that input voltage measurement module 21 detects is more than preset voltage value,
Second voltage-stabiliser tube D2 is breakdown, the Q1 conductings of switch metal-oxide-semiconductor, and the first control terminal output low level conduct of limit power model 22 is not right
The output control signal that reference voltage value is adjusted, represented so as to limit the output of the output end of power model 22 not to reference voltage
The output control signal that value is adjusted, control module 14 are not adjusted according to the output control signal to reference voltage value.
In the alternative embodiment of the present invention, it is (attached that limit power model 22 can also include output control signal generation unit
Not shown in figure), the first control terminal (i.e. " control of the input connection limit power model 22 of the output control signal generation unit
Make point A "), the output end of output control signal generation unit is limited the output end of power model 22.
When the magnitude of voltage for the input voltage measurement signal that input voltage measurement module 21 detects is less than preset voltage value,
Second voltage-stabiliser tube D2 can not be breakdown, and switch metal-oxide-semiconductor Q1 is not turned on, and the first control terminal of limit power model 22 is in high level shape
State, the generation of output control signal generation unit reduces the output control signal of reference voltage value, so as to limit the defeated of power model 22
Going out end output reduces the output control signal of reference voltage value, and control module 14 is according to the output control signal to reference voltage value
Carry out reduction adjustment.
When the magnitude of voltage for the input voltage measurement signal that input voltage measurement module 21 detects is more than preset voltage value,
Second voltage-stabiliser tube D2 is breakdown, and the Q1 conductings of switch metal-oxide-semiconductor, the first control terminal of limit power model 22 is in low level state, defeated
Go out the output control signal that the generation of control signal generation unit represents not to be adjusted reference voltage value, so as to limit power model
22 output end output represents the output control signal not being adjusted to reference voltage value, and control module 14 is according to the output control
Signal processed is not adjusted to reference voltage value.
In the alternative embodiment of the present invention, as shown in Figure 3 B, limit power model 22 can also include photoisolator U1
With the 5th resistance unit 223, wherein, photoisolator U1 first end 1 connects the other end of 3rd resistor unit 221, second
End 2 connects primary ground, and the 3rd end 3 connects secondary ground, and the 4th end 4 is connected with one end of the 5th resistance unit 223；5th resistance unit
223 other end is connected with dc source, and forms the second control terminal of limit power model 22, " the control point illustrated such as Fig. 3 B
B”。
In the alternative embodiment of the present invention, limiting the second control terminal (i.e. " control point B ") of power model 22, be limited power
The output end of module 22.
When the magnitude of voltage for the input voltage measurement signal that input voltage measurement module 21 detects is less than preset voltage value,
Second voltage-stabiliser tube D2 can not be breakdown, and switch metal-oxide-semiconductor Q1 is not turned on, and the second control terminal output low level of limit power model 22 is made
To reduce the output control signal of reference voltage value, the defeated of reference voltage value is reduced so as to limit the output of the output end of power model 22
Go out control signal, control module 14 carries out reduction adjustment according to the output control signal to reference voltage value.
When input voltage measurement module 21 detects that the magnitude of voltage of input voltage measurement signal is more than preset voltage value, the
Two voltage-stabiliser tube D2 are breakdown, and the Q1 conductings of switch metal-oxide-semiconductor, the second control terminal output high level of limit power model 22 is not as to base
The output control signal that quasi- magnitude of voltage is adjusted, represented so as to limit the output of the output end of power model 22 not to reference voltage value
The output control signal being adjusted, control module 14 are not adjusted according to the output control signal to reference voltage value.
In the alternative embodiment of the present invention, it is (attached that limit power model 22 can also include output control signal generation unit
Not shown in figure), the second control terminal (i.e. " control of the input connection limit power model 22 of the output control signal generation unit
Make point B "), the output end of output control signal generation unit is limited the output end of power model 22.
When the magnitude of voltage for the input voltage measurement signal that input voltage measurement module 21 detects is less than preset voltage value,
Second voltage-stabiliser tube D2 can not be breakdown, and switch metal-oxide-semiconductor Q1 is not turned on, and the second control terminal of limit power model 22 is in low level shape
State, the generation of output control signal generation unit reduces the output control signal of reference voltage value, so as to limit the defeated of power model 22
Going out end output reduces the output control signal of reference voltage value, and control module 14 is according to the output control signal to reference voltage value
Carry out reduction adjustment.
When input voltage measurement module 21 detects that the magnitude of voltage of input voltage measurement signal is more than preset voltage value, the
Two voltage-stabiliser tube D2 are breakdown, and switch metal-oxide-semiconductor Q1 conductings, the second control terminal of limit power model 22 is in high level state, exported
The generation of control signal generation unit represents the output control signal not being adjusted to reference voltage value, so as to limit power model 22
Output end output represent the output control signal that is not adjusted to reference voltage value, control module 14 is according to the output control
Signal is not adjusted to reference voltage value.
In the alternative embodiment of the present invention, the preset voltage value that above-described embodiment refers to can be less than or equal to univoltage
The minimum amount of voltage that inputted in the rated voltage section of light fixture, the rated voltage section of light fixture is inputted as 176- using univoltage
Exemplified by 264Vac, preset voltage value can be less than or equal to 176Vac.
In actual applications, certain model high-power commercial LED, customer requirement 176-264Vac normal works, 100-176
When still can continue photo, it is impossible to lamp dodge or lamp go out, can reduce half illumination output, then can choose preset voltage value is
176Vac.When reducing reference voltage value, the reference voltage value of half can be specifically reduced, such as reference voltage value is K, can be with
Reference voltage value is reduced to K/2.It is only illustrative, the embodiment of the present invention is not entered it should be noted that enumerate herein
Row limitation.
In one embodiment, the first resistor unit 211 shown in Fig. 3 A or Fig. 3 B can include multiple resistance, such as electricity
R1, R2 and R3 are hindered, second resistance unit 212 can be resistance R4.3rd resistor unit 221 can also multiple resistance, such as resistance
R5, R6 and R7, the 4th resistance unit 222 can be resistance R8, and the 5th resistance unit 223 can be resistance R9.Need what is illustrated
It is to enumerate being only illustrative herein, the embodiment of the present invention is not limited.
In the alternative embodiment of the present invention, controlled as shown in figure 4, control module mentioned above 14 can include PWM
Device 41, PWM controller 41 are used for by current sample magnitude of voltage compared with reference voltage value, and rectification is filtered according to comparative result
The magnitude of voltage that ripple module 11 supplies the direct current of LED load is adjusted；PWM controller 41 is additionally operable to according to output control signal
Reference voltage value is adjusted.
In the alternative embodiment of the present invention, limiting the first control terminal (i.e. " control point A ") of power model 22, be limited power
The output end of module 22, it is connected with the input of PWM controller 41.So, PWM controller 41 can be according to limit power model 22
The first control terminal output output control signal reference voltage value is adjusted.
In the alternative embodiment of the present invention, the input for limiting the output control signal generation unit in power model 22 connects
Connect the first control terminal (i.e. " control point A ") of limit power model 22, the output end of output control signal generation unit is limited power
The output end of module 22, it is connected with the input of PWM controller 41.So, PWM controller 41 can be according to output control signal
The output control signal of generation unit generation is adjusted to reference voltage value.
In the alternative embodiment of the present invention, as shown in figure 5, control module 14 can include PWM controller 51 and electric current
Loop module 52, one end of current loop module 52 are the inputs of control module 14, and the other end is connected with PWM controller 51,
For current sample magnitude of voltage compared with reference voltage value, to be supplied according to comparative result generation to rectification filtering module 11
The adjustment signal that the magnitude of voltage of the direct current of LED load is adjusted；PWM controller 51 is used to filter rectification according to adjustment signal
The magnitude of voltage that ripple module 11 supplies the direct current of LED load is adjusted；Current loop module 52 is additionally operable to according to output control
Signal is adjusted to reference voltage value.
In the alternative embodiment of the present invention, limiting the second control terminal (i.e. " control point B ") of power model 22, be limited power
The output end of module 22, it is connected with one end of current loop module 52.So, current loop module 52 can be according to limit power mould
The output control signal of the second control terminal output of block 22 is adjusted to reference voltage value.
In the alternative embodiment of the present invention, the input for limiting the output control signal generation unit in power model 22 connects
Connect the second control terminal (i.e. " control point B ") of limit power model 22, the output end of output control signal generation unit is limited power
The output end of module 22, it is connected with one end of current loop module 52.So, current loop module 52 can be according to output control
The output control signal of signal generation unit generation is adjusted to reference voltage value.
In the alternative embodiment of the present invention, as shown in fig. 6, the control module 14 of figure 4 above displaying can also include work(
Rate conversion module 61, the output end of the first end connection rectification filtering module 11 of power conversion modules 61, the second end connection PWM controls
The output end of device 41 processed, the input of three-terminal link LED load 12, for performing according to comparative result to rectification filtering module
The instruction that the magnitude of voltage of the direct current of 11 supply LED loads 12 is adjusted, and the direct current after adjustment magnitude of voltage is supplied into LED
Load 12.
In the alternative embodiment of the present invention, as shown in fig. 7, the control module 14 of figure 5 above displaying can also include work(
Rate conversion module 71, the output end of the first end connection rectification filtering module 11 of power conversion modules 71, the second end connection PWM controls
The output end of device 51 processed, the input of three-terminal link LED load 12, for performing according to comparative result to rectification filtering module
The instruction that the magnitude of voltage of the direct current of 11 supply LED loads 12 is adjusted, and the direct current after adjustment magnitude of voltage is supplied into LED
Load 12.
In actual applications, the 3rd end of power conversion modules 61 can also connect a rectifier (not shown in accompanying drawing), will
The direct current that power conversion modules 61 export supplies LED load 12 after rectifier rectification filtering.Similarly, power conversion mould
3rd end of block 71 can also connect a rectifier (not shown in accompanying drawing), and the direct current that power conversion modules 71 are exported is whole through this
LED load 12 is supplied after flowing device rectifying and wave-filtering.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of lighting device, includes above-mentioned driving electricity
Source.
Light fixture is inputted for univoltage, if input voltage is less than the minimum amount of voltage that in the rated voltage section of light fixture,
If rated voltage section is 176-264Vac, input voltage is less than 176Vac, then the LED load of light fixture occur lamp dodge, lamp
Go out, serious meeting causes light fixture product permanent damage.If routinely way, power supply EMC, rectifier, boost inductance, power
Switching tube etc. is required for increasing specification, and cost is higher.After using driving power provided in an embodiment of the present invention, list can be realized
Control source light fixture persistently illuminates when low-voltage inputs, and only increases relatively low cost, it is possible to meet low pressure semi-load or
The requirement of underloading illumination, reduces cost, improves product competitiveness.
Embodiment described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further specifically
It is bright, should be understood that the foregoing is only the present invention exemplary embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., the protection of the present invention should be included in
Within the scope of.
Claims (17)
1. a kind of driving power, for realizing that univoltage input light fixture persistently illuminates when low-voltage inputs, the driving power
Including rectification filtering module, sampling module, control module, the input incoming transport power supply of the rectification filtering module, to handing over
The alternating current for flowing power supply output carries out rectifying and wave-filtering treatment and supplied LED load；The input connection LED of the sampling module is born
The output end of load, for gathering the current signal of LED load, obtain current sample magnitude of voltage and export；The sampling module
Output end connects the input of the control module, and the control module enters the current sample magnitude of voltage with reference voltage value
Row compares, and the magnitude of voltage for supplying the direct current of LED load to the rectification filtering module according to comparative result is adjusted, and it is special
Sign is that the driving power also includes：Input voltage measurement module and limit power model；
The input of the input voltage measurement module connects the output end of the rectification filtering module, for being filtered to the rectification
The direct current of ripple module output carries out voltage detecting, obtains input voltage measurement signal；The input voltage measurement module it is defeated
Go out the detection voltage input end of the end connection limit power model, the limit power model is according to the input voltage measurement signal
Generate the output control signal being adjusted to the reference voltage value；The output end of the limit power model connects the control
The input of module, the control module are adjusted according to the output control signal to the reference voltage value.
2. driving power according to claim 1, it is characterised in that the input voltage measurement module includes：First electricity
Hinder unit and second resistance unit；
One end of the first resistor unit is the input of the input voltage measurement module, the first resistor unit it is another
One end and one end of the second resistance unit connect the output end to form the input voltage measurement module, the second resistance altogether
The primary ground of another termination of unit.
3. driving power according to claim 1, it is characterised in that the limit power model includes：3rd resistor unit,
First voltage-stabiliser tube, the second voltage-stabiliser tube, the 4th resistance unit and switch metal-oxide-semiconductor；
One end of the 3rd resistor unit be it is described limit power model direct-flow input end, the 3rd resistor unit it is another
The drain terminal with the negative electrode of first voltage-stabiliser tube, the switch metal-oxide-semiconductor is held to be connected；The anode of first voltage-stabiliser tube and described open
The source for closing metal-oxide-semiconductor connects primary ground；
The negative electrode of second voltage-stabiliser tube be it is described limit power model detection voltage input end, the anode of second voltage-stabiliser tube
One end, the grid end of the switch metal-oxide-semiconductor with the 4th resistance unit are connected；At the beginning of another termination of 4th resistance unit
Level ground.
4. driving power according to claim 3, it is characterised in that the direct-flow input end connection institute of the limit power model
State the output end of rectification filtering module.
5. driving power according to claim 3, it is characterised in that the other end of the 3rd resistor unit is opened with described
The drain terminal for closing metal-oxide-semiconductor connects the first control terminal to form the limit power model altogether.
6. driving power according to claim 5, it is characterised in that the first control terminal of the limit power model is described
Limit the output end of power model；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is less than preset voltage value
When, second voltage-stabiliser tube can not be breakdown, and the switch metal-oxide-semiconductor is not turned on, and the first control terminal of the limit power model is defeated
Go out high level as the output control signal for reducing the reference voltage value；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is more than the default electricity
During pressure value, second voltage-stabiliser tube is breakdown, the switch metal-oxide-semiconductor conducting, the first control terminal output of the limit power model
Low level is as the output control signal not being adjusted to the reference voltage value.
7. driving power according to claim 5, it is characterised in that the limit power model also includes：Output control is believed
Number generation unit；
First control terminal of the input connection limit power model of the output control signal generation unit, output end is institute
State the output end of limit power model；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is less than preset voltage value
When, second voltage-stabiliser tube can not be breakdown, and the switch metal-oxide-semiconductor is not turned on, at the first control terminal of the limit power model
In high level state, the output control signal generation unit generation reduces the output control signal of the reference voltage value；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is more than the default electricity
During pressure value, second voltage-stabiliser tube is breakdown, and the switch metal-oxide-semiconductor conducting, the first control terminal of the limit power model is in
Low level state, the output control signal generation unit generation represent the output control not being adjusted to the reference voltage value
Signal processed.
8. driving power according to claim 3, it is characterised in that the limit power model also includes：Photoisolator
With the 5th resistance unit；
The first end of the photoisolator connects the other end of the 3rd resistor unit, the primary ground of the second termination, the 3rd end
Secondary ground is connect, the 4th end is connected with one end of the 5th resistance unit；The other end and direct current of 5th resistance unit
Source connects, and forms the second control terminal of the limit power model.
9. driving power according to claim 8, it is characterised in that the second control terminal of the limit power model is described
Limit the output end of power model；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is less than preset voltage value
When, second voltage-stabiliser tube can not be breakdown, and the switch metal-oxide-semiconductor is not turned on, and the second control terminal of the limit power model is defeated
Go out low level as the output control signal for reducing the reference voltage value；
When the input voltage measurement module detects that the magnitude of voltage of the input voltage measurement signal is more than the predeterminated voltage
During value, second voltage-stabiliser tube is breakdown, the switch metal-oxide-semiconductor conducting, and the second control terminal output of the limit power model is high
Level is as the output control signal not being adjusted to the reference voltage value.
10. driving power according to claim 8, it is characterised in that the limit power model also includes：Output control is believed
Number generation unit；
Second control terminal of the input connection limit power model of the output control signal generation unit, output end is institute
State the output end of limit power model；
When the magnitude of voltage for the input voltage measurement signal that the input voltage measurement module detects is less than preset voltage value
When, second voltage-stabiliser tube can not be breakdown, and the switch metal-oxide-semiconductor is not turned on, at the second control terminal of the limit power model
In low level state, the output control signal generation unit generation reduces the output control signal of the reference voltage value；
When the input voltage measurement module detects that the magnitude of voltage of the input voltage measurement signal is more than the predeterminated voltage
During value, second voltage-stabiliser tube is breakdown, and the switch metal-oxide-semiconductor conducting, the second control terminal of the limit power model is in height
Level state, the output control signal generation unit generation represent the output control not being adjusted to the reference voltage value
Signal.
11. the driving power according to any one of claim 6-7,9-10, it is characterised in that the preset voltage value is small
In or equal to minimum amount of voltage that in the rated voltage section of univoltage input light fixture.
12. driving power according to claim 1, it is characterised in that the control module includes PWM controller, described
PWM controller is used for by the current sample magnitude of voltage compared with reference voltage value, according to comparative result to the rectification
The magnitude of voltage of the direct current of filtration module supply LED load is adjusted；The PWM controller is additionally operable to be controlled according to the output
Signal processed is adjusted to the reference voltage value.
13. driving power according to claim 12, it is characterised in that the first control terminal of the limit power model is institute
The output end of limit power model is stated, is connected with the input of the PWM controller；Or
First control of the input connection limit power model of the output control signal generation unit in the limit power model
End processed, the output end of the output control signal generation unit is the output end for limiting power model, with the PWM controller
Input connection.
14. driving power according to claim 1, it is characterised in that the control module includes PWM controller and electric current
Loop module, one end of the current loop module is the input of the control module, and the other end connects with the PWM controller
Connect, for the current sample magnitude of voltage compared with reference voltage value, to be filtered according to comparative result generation to the rectification
The adjustment signal that the magnitude of voltage of the direct current of ripple module supply LED load is adjusted；The PWM controller is used for according to
The magnitude of voltage that adjustment signal supplies the direct current of LED load to the rectification filtering module is adjusted；
The current loop module is additionally operable to be adjusted the reference voltage value according to the output control signal.
15. driving power according to claim 14, it is characterised in that the second control terminal of the limit power model is institute
The output end of limit power model is stated, is connected with one end of the current loop module；Or
Second control of the input connection limit power model of the output control signal generation unit in the limit power model
End processed, the output end of the output control signal generation unit is the output end for limiting power model, with the current loop
One end connection of module.
16. the driving power according to claim 12 or 14, it is characterised in that the control module also includes power conversion
Module, the first end of the power conversion modules connect the output end of the rectification filtering module, and the second end connects the PWM controls
The output end of device processed, the input of three-terminal link LED load, for performing according to comparative result to the rectification filtering module
The instruction that the magnitude of voltage of the direct current of LED load is adjusted is supplied, and the direct current supply LED after adjustment magnitude of voltage is born
Carry.
17. a kind of lighting device, it is characterised in that including the driving power any one of claim 1-16.
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| CN201711244187.XA CN107820347A (en) | 2017-11-30 | 2017-11-30 | A kind of driving power and lighting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711244187.XA CN107820347A (en) | 2017-11-30 | 2017-11-30 | A kind of driving power and lighting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309993A (en) * | 2018-11-16 | 2019-02-05 | 苏州中储普华电力科技有限公司 | Circuit light adjusting circuit for intelligent lighting |
| CN117096834A (en) * | 2023-10-18 | 2023-11-21 | 深圳市力生美半导体股份有限公司 | Switching power supply and protection method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037557A (en) * | 2011-09-29 | 2013-04-10 | 比亚迪股份有限公司 | Illumination driving device |
| CN103108470A (en) * | 2013-02-06 | 2013-05-15 | 深圳市芯飞凌半导体有限公司 | Dynamic linear control light emitting diode (LED) driver circuit |
| CN203012565U (en) * | 2012-12-29 | 2013-06-19 | 徐州市恒源电器有限公司 | Simple multi-voltage and multi-current feedback control circuit capable of accurately adjusting |
| US20130162157A1 (en) * | 2011-12-26 | 2013-06-27 | Minebea Co., Ltd. | Switching Power Supply Device and Light-Emitting Diode Lighting Device |
| CN103391014A (en) * | 2012-05-11 | 2013-11-13 | 台达电子工业股份有限公司 | Power source conversion device |
| CN103607810A (en) * | 2013-10-31 | 2014-02-26 | 汤志新 | Control circuit of LED lighting equipment |
| CN103687203A (en) * | 2013-11-22 | 2014-03-26 | 深圳海天力科技有限公司 | LED drive circuit and LED lamp |
| CN104507207A (en) * | 2014-11-21 | 2015-04-08 | 南京大学 | High-performance current-type multi-switching LED controller |
| CN105188232A (en) * | 2015-10-23 | 2015-12-23 | 深圳市奇脉电子技术有限公司 | LED (light-emitting diode) constant-current drive circuit, constant-current dimming circuit and control method of LED (light-emitting diode) constant-current dimming circuit |
| CN207766599U (en) * | 2017-11-30 | 2018-08-24 | 欧普照明股份有限公司 | A kind of driving power and lighting device |
-
2017
- 2017-11-30 CN CN201711244187.XA patent/CN107820347A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037557A (en) * | 2011-09-29 | 2013-04-10 | 比亚迪股份有限公司 | Illumination driving device |
| US20130162157A1 (en) * | 2011-12-26 | 2013-06-27 | Minebea Co., Ltd. | Switching Power Supply Device and Light-Emitting Diode Lighting Device |
| CN103391014A (en) * | 2012-05-11 | 2013-11-13 | 台达电子工业股份有限公司 | Power source conversion device |
| CN203012565U (en) * | 2012-12-29 | 2013-06-19 | 徐州市恒源电器有限公司 | Simple multi-voltage and multi-current feedback control circuit capable of accurately adjusting |
| CN103108470A (en) * | 2013-02-06 | 2013-05-15 | 深圳市芯飞凌半导体有限公司 | Dynamic linear control light emitting diode (LED) driver circuit |
| CN103607810A (en) * | 2013-10-31 | 2014-02-26 | 汤志新 | Control circuit of LED lighting equipment |
| CN103687203A (en) * | 2013-11-22 | 2014-03-26 | 深圳海天力科技有限公司 | LED drive circuit and LED lamp |
| CN104507207A (en) * | 2014-11-21 | 2015-04-08 | 南京大学 | High-performance current-type multi-switching LED controller |
| CN105188232A (en) * | 2015-10-23 | 2015-12-23 | 深圳市奇脉电子技术有限公司 | LED (light-emitting diode) constant-current drive circuit, constant-current dimming circuit and control method of LED (light-emitting diode) constant-current dimming circuit |
| CN207766599U (en) * | 2017-11-30 | 2018-08-24 | 欧普照明股份有限公司 | A kind of driving power and lighting device |
Non-Patent Citations (1)
| Title |
|---|
| 刘征宇: "《线性放大器应用手册》", 31 May 2005, 福州：福建科学技术出版社, pages: 35 - 36 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309993A (en) * | 2018-11-16 | 2019-02-05 | 苏州中储普华电力科技有限公司 | Circuit light adjusting circuit for intelligent lighting |
| CN109309993B (en) * | 2018-11-16 | 2024-02-27 | 苏州中储普华电力科技有限公司 | Loop dimming circuit for intelligent illumination |
| CN117096834A (en) * | 2023-10-18 | 2023-11-21 | 深圳市力生美半导体股份有限公司 | Switching power supply and protection method thereof |
| CN117096834B (en) * | 2023-10-18 | 2024-02-27 | 深圳市力生美半导体股份有限公司 | Switching power supply and protection method thereof |
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