CN107580395A - Output control device, method and system - Google Patents
Output control device, method and system Download PDFInfo
- Publication number
- CN107580395A CN107580395A CN201710927639.8A CN201710927639A CN107580395A CN 107580395 A CN107580395 A CN 107580395A CN 201710927639 A CN201710927639 A CN 201710927639A CN 107580395 A CN107580395 A CN 107580395A
- Authority
- CN
- China
- Prior art keywords
- circuit
- current
- load
- module
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005070 sampling Methods 0.000 claims abstract description 45
- 230000033228 biological regulation Effects 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims description 10
- 230000008901 benefit Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 7
- 241000208340 Araliaceae Species 0.000 claims description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 2
- 235000008434 ginseng Nutrition 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 101100508768 Arabidopsis thaliana IMPA3 gene Proteins 0.000 description 6
- 101100478187 Arabidopsis thaliana MOS4 gene Proteins 0.000 description 6
- 101100134625 Arabidopsis thaliana NUP88 gene Proteins 0.000 description 5
- 230000002441 reversible effect Effects 0.000 description 5
- 101100461812 Arabidopsis thaliana NUP96 gene Proteins 0.000 description 4
- 101100262446 Arabidopsis thaliana UBA1 gene Proteins 0.000 description 4
- 102100030393 G-patch domain and KOW motifs-containing protein Human genes 0.000 description 4
- 101150090280 MOS1 gene Proteins 0.000 description 4
- 101100401568 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) MIC10 gene Proteins 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 4
- 101100273567 Arabidopsis thaliana CYCL1-1 gene Proteins 0.000 description 3
- 101100402275 Arabidopsis thaliana MOS11 gene Proteins 0.000 description 3
- 101100153764 Arabidopsis thaliana TPR1 gene Proteins 0.000 description 3
- 101100428744 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) VPS60 gene Proteins 0.000 description 3
- 230000005669 field effect Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Control Of Voltage And Current In General (AREA)
Abstract
The embodiments of the invention provide a kind of output control device, method and system, belong to electric and electronic technical field.Device includes：Sampling module, power control module and drive module, power control module are connected with sampling module and drive module respectively, and sampling module and drive module connect with load.Sampling module, the voltage of load is loaded into for sampling, to obtain sample rate current corresponding with voltage, sample rate current is exported to power control module；Power control module, for judging whether sample rate current exceedes threshold current, when to be, the load driving current of regulation drive module output, balance is kept with the input power of control load.Therefore, no matter input to whether the input voltage of load changes, output control device can control the input power of load to keep one dynamically to balance, so as to greatly improve load service life.
Description
Technical field
The present invention relates to electric and electronic technical field, in particular to a kind of output control device, method and system.
Background technology
At present, linear constant current technical scheme is obtained with its simple system architecture in the LED constant current system of middle low power
It is widely applied.
This application scheme the advantage is that system architecture is simple, use component relative to the Switching Power Supply scheme of routine
It is few.But the LED quantity of system load must design in strict accordance with input voltage, once the change of system input voltage can be led
The input power of whole system is caused to change, so as to greatly reduce system load service life.
The content of the invention
In view of this, it is an object of the invention to provide a kind of output control device, method and system, on being effectively improved
State defect.
What embodiments of the invention were realized in the following way：
In a first aspect, the embodiments of the invention provide a kind of output control device, including：Sampling module, Power Control mould
Block and drive module, the power control module are connected with the sampling module and the drive module respectively, the sampling mould
Block and the drive module connect with load.The sampling module, the sample rate current of the load is inputted for sampling, by institute
Sample rate current is stated to export to the power control module.The power control module, for judging whether the sample rate current surpasses
Threshold current is crossed, when to be, the load driving current of the drive module is adjusted, to control the input power of the load to protect
Maintain an equal level weighing apparatus.
Further, the power control module includes：First mirror image circuit, current comparison circuit and reference voltage produce
Circuit；The current comparison circuit is connected with first mirror image circuit and the generating circuit from reference voltage respectively, and described
One mirror image circuit is connected with the sampling module, and the generating circuit from reference voltage is connected with the drive module.Described first
Mirror image circuit, for obtaining the sample rate current, the sample rate current after mirror image is exported to the current comparison circuit.Institute
Current comparison circuit is stated, for judging whether the sample rate current exceedes threshold current set in advance, when to be, exports institute
Sample rate current is stated more than the compensation electric current corresponding to the part of the threshold current to the generating circuit from reference voltage.The ginseng
Voltage generation circuit is examined, for according to the compensation electric current, will adjust to the reference voltage output with the compensation currents match
To the drive module, so that the drive module adjusts the load driving current, so that the input power of the load is protected
Maintain an equal level weighing apparatus.
Further, the current comparison circuit includes：Current source sub-circuit, compare sub-circuit and output sub-circuit.Institute
State compare sub-circuit respectively with the current source sub-circuit, it is described output sub-circuit be connected and first mirror image circuit connection,
The output sub-circuit is connected with the generating circuit from reference voltage.The current source sub-circuit, it is described for generating and exporting
Threshold current compares sub-circuit to described.The relatively sub-circuit, adopted for obtaining described in the first mirror image circuit output
Sample electric current, and judge whether the sample rate current is more than the threshold current obtained, when to be, export the sample rate current
More than the compensation electric current corresponding to the part of the threshold current to the output sub-circuit, so that the output sub-circuit
The compensation electric current is exported to the generating circuit from reference voltage.
Further, the relatively sub-circuit includes：5th FET and the 6th FET, the 5th field-effect
The drain and gate of pipe is connected with the current source sub-circuit, grid and the 6th field-effect of the 5th FET
The grid connection of pipe, the source electrode of the 5th FET and the source grounding of the 6th FET, described 6th
The drain electrode of effect pipe is connected with the first mirror image circuit and the output sub-circuit respectively.
Further, the drive module includes：At least one drive circuit, each drive circuit respectively with institute
State power control module and a corresponding load connection.
Further, the drive circuit includes：Feedback sub-circuit and regulation sub-circuit.The feedback sub-circuit distinguishes institute
State power control module to connect with the regulation sub-circuit, the regulation sub-circuit connects with corresponding one load.It is described
Feedback sub-circuit, for adjusting the load driving current of the regulator circuit output according to the reference voltage, so that
The feedback voltage of the regulation sub-circuit of collection matches with the reference voltage, so that the input power of the load keeps flat
Weighing apparatus.
Further, the output control device also includes：Rectification module, the rectification module and the sampling module and
The load connection.
Second aspect, the embodiments of the invention provide a kind of Poewr control method, applied to the work(in output control device
Rate control module, described device also include：Drive module, the power control module are connected with the drive module, the drive
Dynamic model block connects with load.Methods described includes：The power control module judges whether the sample rate current exceedes threshold value electricity
Stream；When to be, the power control module adjusts the load driving current of the drive module output, to control the load
Input power keep balance.
Further, it is described when to be, the load driving current of the drive module output is adjusted, it is described negative to control
The input power of load keeps balance.Including：When to be, the power control module exports the sample rate current and exceedes the threshold
It is worth the compensation electric current corresponding to the part of electric current；The power control module according to the compensation electric current, will regulation to it is described
The reference voltage output of currents match is compensated to the drive module, so that the load of drive module regulation output is driven
Streaming current, so that the input power of the load keeps balance.
The third aspect, the embodiments of the invention provide a kind of power control system, including：Load and described Power Control
Device, the load are connected with the output control device.
The embodiment of the present invention has the advantages that：
Whether power control module exceedes threshold current by the sample rate current in loop where judging output control device, when
When being judged to being, then power control module controls to adjust the load driving current of the output of drive module, with the defeated of control load
Enter power and keep balance.Therefore, no matter input to whether the input voltage of load changes, output control device can control negative
The input power of load keeps one dynamically to balance, so as to greatly improve load service life.
Other features and advantages of the present invention will illustrate in subsequent specification, also, partly become from specification
It is clear that or understood by implementing the embodiment of the present invention.The purpose of the present invention and other advantages can be by being write
Specifically noted structure is realized and obtained in specification, claims and accompanying drawing.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.By the way that shown in accompanying drawing, above and other purpose of the invention, feature and advantage will become apparent from.In whole
Identical reference instruction identical part in accompanying drawing.Deliberately accompanying drawing, emphasis are not drawn by actual size equal proportion scaling
It is the purport for showing the present invention.
Fig. 1 shows a kind of structured flowchart for power control system that first embodiment of the invention provides；
Fig. 2 shows a kind of first structure block diagram for output control device that second embodiment of the invention provides；
Fig. 3 shows a kind of the second structured flowchart of output control device that second embodiment of the invention provides；
Fig. 4 shows a kind of the first circuit diagram of output control device that second embodiment of the invention provides；
Fig. 5 shows a kind of second circuit figure for output control device that second embodiment of the invention provides；
Fig. 6 shows a kind of flow chart for Poewr control method that third embodiment of the invention provides；
Fig. 7 shows the method sub-process of step S200 in a kind of Poewr control method that third embodiment of the invention provides
Figure.
Icon：10- power control systems；20- is loaded；21- first is loaded；22- second is loaded；23- the 3rd is loaded；24-
4th load；100- output control devices；110- rectification modules；120- sampling modules；130- power control modules；131- first
Mirror image circuit；132- current comparison circuits；1321- current source sub-circuits；1322- compares sub-circuit；1323- exports sub-circuit；
133- generating circuit from reference voltage；140- drive modules；1401- drive circuits；The drive circuits of 141- first；142- second drives
Circuit；The drive circuits of 143- the 3rd；The drive circuits of 144- the 4th.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, term " first ", " second ", " the 3rd ", " the 4th " etc. are only used for distinguishing description, without
It is understood that to indicate or implying relative importance.And in the description of the invention, it is also necessary to explanation, unless otherwise clear and definite
Regulation and restriction, term " connection ", " coupling " should be interpreted broadly, for example, it may be being fixedly connected or detachably connecting
Connect, or be integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, middle matchmaker can also be passed through
Jie is indirectly connected, and can be the connection of two element internals.For the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
First embodiment
Referring to Fig. 1, the embodiments of the invention provide a kind of power control system 10, the power control system 10 includes：
Load 20 and output control device 100.Wherein, load 20 is connected with output control device 100, and output control device 100 and
External power source connects.
Load 20 can include multiple LED light sources, and multiple LED light sources are followed in series to form the load 20.The present embodiment is simultaneously
The quantity of LED light source is not limited, its particular number can be selected according to actual performance.20 both ends are loaded to pass through
It is connected with output control device 100, the electric energy that external power source is obtained by output control device 100 is lighted.
Output control device 100 is used for the AC signal for obtaining external power source input, and AC signal rectification is believed for direct current
Number, and export to load 20, so that load 20 is worked with input power corresponding to the direct current signal.Output control device 100 is also
For gathering the sample rate current corresponding to direct current signal, to adjust the input work of power control system 10 according to the sample rate current
Rate, so that the input power of power control system 10 keeps a dynamic equilibrium, even if its input power keeps relative constant.
Second embodiment
Referring to Fig. 2, the embodiments of the invention provide a kind of output control device 100, the output control device 100 wraps
Include：Rectification module 110, sampling module 120, power control module 130 and drive module 140.Wherein, rectification module 110 is distinguished
20 be connected with external power source, sampling module 120 and load, power control module 130 respectively with sampling module 120 and drive module
140 connections, drive module 140 are then connected with load 20.
Rectification module 110, for obtaining the AC signal of external power source, by AC signal rectification be DC signal output extremely
Load 20, so that the load 20 obtains the input power matched with direct current signal.
Sampling module 120, when loading 20 input direct-current signal for sampling, voltage that the load 20 is loaded, to obtain
Sample rate current corresponding with the voltage, sample rate current is exported to power control module 130.
Power control module 130, for judging whether sample rate current exceedes threshold current, when to be, regulation driving mould
The load driving current that block 140 exports.
Drive module 140, for the control according to sampling module 120, and the load for adjusting itself output to load 20 is driven
Streaming current, a dynamic balance is maintained at the input power of control load 20.
Fig. 3 and Fig. 4 are referred to, rectification circuit can be full-wave bridge type rectification circuit, and it may include：Multiple poles of rectification two
Pipe.
Specifically, in the rectification module 110 of the present embodiment：
The cathode terminal connection of first commutation diode D1 anode tap and the 3rd commutation diode D3, the first commutation diode
D1 anode tap is provided with the connection terminal A1 for being used for connecting external power source.First commutation diode D1 cathode terminal and the second rectification
Diode D2 cathode terminal connection, and be also connected respectively with load 20 and sampling module 120.Second commutation diode D2 anode
End and the 4th commutation diode D4 cathode terminal are connected with connection terminal A2, the 3rd commutation diode D3 anode tap and the 4th
Commutation diode D4 anode tap is grounded.
Rectification module 110 will be obtained by above-mentioned annexation, rectification module 110 by connection terminal A1 and connection terminal A2
The AC signal taken, by four rectifies be direct current signal after, by the DC signal output to load 20.Its
In, AC signal may be selected to be 220V/50Hz civil powers in the present embodiment, but not limit.
Also as shown in Figure 3 and Figure 4, in the sampling module 120 of the present embodiment：
First sampling resistor R1 one end is connected with load 20, the first sampling resistor R1 other end and power control module
130 connections.In addition, the first electric capacity C1 one end is also connected with load 20, the first electric capacity C1 other end is then grounded.Certainly, it is real
When in the application of border, the first electric capacity C1's can selectively access according to actual conditions.
Sampling module 120 is by above-mentioned annexation, direct current signal of the sampling module 120 by the first electric capacity C1 to output
It is filtered, to ensure the stability of direct current signal.Believe in addition, sampling module 120 gathers direct current by the first sampling resistor R1
The voltage number being carried in load 20, and the sample rate current of change corresponding with the voltage is obtained, and pass through the first sampling resistor R1
Metering function, be contracted to be adapted to the power control module by exporting to the current value of sample rate current of power control module 130
130, and the starting offset voltage point also corresponding to control compensation electric current.In addition, in actual implementation, 20 are loaded according to being loaded onto
Voltage swing is different, and the first sampling resistor R1 big I is adjusted, to obtain the sample rate current of an adaptation.
Referring to Fig. 3, power control module 130 includes：First mirror image circuit 131, current comparison circuit 132 and reference electricity
Press generation circuit 133.Wherein, current comparison circuit 132 respectively with the first mirror image circuit 131 and generating circuit from reference voltage 133
Connection, the first mirror image circuit 131 are connected with sampling module 120, and generating circuit from reference voltage 133 is connected with drive module 140.
First mirror image circuit 131 is used for the sample rate current for obtaining the output of sampling module 120, and by the sample rate current after mirror image
Export to current comparison circuit 132.
As shown in figure 4, specifically, in first mirror image circuit 131 of the present embodiment：
First FET MOS1 drain and gate is connected with sampling module 120, the first FET MOS1 grid
Pole is connected with the second FET MOS2 grid.The source electrode of first FET MOS1 source electrode and the second FET MOS2
It is grounded.Drain and gate of the second FET MOS2 drain electrode then respectively with the 3rd FET MOS3 is connected.3rd
Effect pipe MOS3 grid is connected with the 4th FET MOS4 grid.3rd FET MOS3 source electrode and the 4th effect
Should pipe MOS4 source electrode be all connected with bias supply.4th FET MOS4 drain electrode then connects current comparison circuit 132.
First mirror image circuit 131 by above-mentioned annexation,
First FET MOS1 and the second FET MOS2 forms a mirror image unit of the first mirror image circuit 131, enters
And the mirror image unit can be with N：1 image ratio, the sample rate current of acquisition is reduced and mirror image exports.3rd FET MOS3
Another mirror image unit of the first mirror image circuit 131 is formed with the 4th FET MOS4, and then the mirror image unit can be with 1：1
Image ratio, sample rate current after the diminution of acquisition etc. is exported to current comparison circuit 132 than mirror image.
It is understood that by two mirror image units, the present embodiment can be on the basis for the feature invariant for keeping loop signal
The size of upper flexible regulation sample rate current.Due to output control device 100 whether compensate regulation be by sample rate current with
Threshold current together decides on., it is recognized that N：1 image ratio and 1：1 image ratio is only that the one of which in the present embodiment is real
Mode is applied, is not intended as the restriction to the present embodiment.
Referring to Fig. 3, current comparison circuit 132 is used to judge whether sample rate current exceedes threshold current set in advance,
When to be, output sample rate current is more than the compensation electric current corresponding to the part of threshold current to generating circuit from reference voltage 133.
Specifically, current comparison circuit 132 includes：Current source sub-circuit 1321, compare sub-circuit 1322 and output son electricity
Road 1323.Wherein, compare sub-circuit 1322 to be connected and the first mirror image with current source sub-circuit 1321, output sub-circuit 1323 respectively
Circuit 131 is connected, and output sub-circuit 1323 is then connected with generating circuit from reference voltage 133.
As shown in figure 4, current source sub-circuit 1321 is a current source Iref, current source Iref sub-circuits 1322 compared with connect
Connect.
Comparing sub-circuit 1322 includes：5th FET MOS5 and the 6th FET MOS6.5th FET
MOS5 drain and gate is connected with current source Iref, the 5th FET MOS5 grid and the 6th FET MOS6's
Grid connects, the 5th FET MOS6 source electrode and the 6th FET MOS6 source grounding, the 6th FET
The drain electrode with the 4th FET MOS4 in the first mirror image circuit 131 and output sub-circuit 1323 are connected respectively for MOS6 drain electrode.
Output sub-circuit 1323 includes：7th FET MOS7 and the 8th FET MOS8.7th FET
4th FET in drain electrode of the MOS7 drain and gate with the 6th FET MOS6, and the first mirror image circuit 131
MOS4 drain electrode connection.7th FET MOS7 grid is connected with the 8th FET MOS8 grid, the 7th field-effect
The source grounding of pipe MOS7 source electrode and the 8th FET MOS8.8th FET MOS8 drain electrode is produced with reference voltage
Raw circuit 133 connects.
By above-mentioned annexation, current source sub-circuit 1321 generates and exports threshold current extremely current comparison circuit 132
Compare sub-circuit 1322.Compare the mirror that sub-circuit 1322 is then made up of the 5th FET MOS5 and the 6th FET MOS6
As unit, threshold current is pressed 1：1 image ratio mirror image exports the threshold current.Wherein, 1：1 image ratio is the present embodiment
A kind of embodiment, it is not intended as the restriction to the present embodiment.Now, compare sub-circuit 1322 and also obtain the first mirror image circuit
The sample rate current of 131 outputs, and by sample rate current compared with threshold current, to judge whether sample rate current is more than the threshold value obtained
Electric current.When sample rate current is less than or equal to threshold current, now, export to the compensation electric current of generating circuit from reference voltage 133
For 0, that is, the electric current for comparing the output of sub-circuit 1322 flows into ground potential points, and then exports being produced to reference voltage for sub-circuit 1323
The output of raw circuit 133 is also 0.When sample rate current is more than threshold current, now, export to generating circuit from reference voltage 133
Compensation electric current subtract threshold current for sample rate current, compare sub-circuit 1322 and export portion of the sample rate current more than threshold current
Compensation electric current corresponding to point extremely exports sub-circuit 1323.Output sub-circuit 1323 then passes through the 7th FET MOS7 and the 8th
The mirror image unit that FET MOS8 is formed, compensation electric current is pressed 1：1 image ratio mirror image exports the compensation electric current to reference to electricity
Press generation circuit 133.Wherein, 1：1 image ratio is also an embodiment of the present embodiment, is not intended as to the present embodiment
Limit.
Referring to Fig. 3, generating circuit from reference voltage 133 is used for according to compensation electric current, by regulation to compensating currents match
Reference voltage output to drive module 140, to adjust the sample rate current of drive module 140, so that the input power of load 20
A dynamic equilibrium is kept, that is, causes the input power of load 20 to keep relative constancy.
As shown in figure 4, specifically, in the generating circuit from reference voltage 133 of the embodiment of the present invention：
Reference voltage chip Uref output end is connected with second resistance R2 one end, the second resistance R2 other end and
Three resistance R3 one end connection, the 3rd resistor R3 other end are connected with the 4th resistance R4 one end, and the 4th resistance R4's is another
End ground connection.In addition, 3rd resistor R3 one end also respectively with the 8th FET MOS8 drain electrode in current comparison circuit 132 and
Drive module 140 connects.
Generating circuit from reference voltage 133 is by above-mentioned annexation, the second resistance in generating circuit from reference voltage 133
R2,3rd resistor R3 and the 4th resistance R4 form divider resistance string.
When the voltage that input load 20 is loaded is less than or equal to starting offset voltage point, from current comparison circuit 132
During uncompensated electric current input reference voltage generation circuit 133, current comparison circuit 132 exports according to reference voltage chip Uref
Reference voltage, and the partial pressure relationship that second resistance R2 is formed with divider resistance string, will be adapted to the reference voltage of the reference voltage
Lasting output is to drive module 140.
Offset voltage point is originated when the voltage loaded of input load 20 is more than, then is inputted from current comparison circuit 132
Electric current is compensated to generating circuit from reference voltage 133, divider resistance string is applied to due to compensation electric current so that divider resistance string institute
The voltage of loading reduces, and then the corresponding reference voltage being reduced to compensation currents match of the output of generating circuit from reference voltage 133
To drive module 140.
When the voltage that input load 20 is loaded diminishes by the voltage summit more than offset voltage, then compare from electric current
The compensation electric current of the input reference voltage generation circuit 133 of circuit 132 diminishes, and is applied to due to the compensation electric current to diminish while also point
Piezoresistance string so that the voltage rise that divider resistance string is loaded, and then the output of generating circuit from reference voltage 133 is corresponded to and is increased to
With the reference voltage of compensation currents match that diminishes to drive circuit 1401.
Referring to Fig. 3, drive module 140 includes：At least one drive circuit 1401, each drive circuit 1401 is respectively
With power control module 130 and the corresponding connection of a load 20.Wherein, each drive circuit 1401 includes：Feedback sub-circuit
With regulation sub-circuit, feedback sub-circuit difference power control module 130 and regulation sub-circuit connect, adjust sub-circuit with it is corresponding
The connection of one load 20.
In the present embodiment, the load that feedback sub-circuit is used to adjust the regulator circuit output according to reference voltage drives electricity
Stream, so that the feedback voltage of the regulation sub-circuit of collection matches with the reference voltage obtained, and then cause the input work of load 20
Rate keeps balance.Wherein, feedback sub-circuit can be an amplifier, and regulation sub-circuit can be a FET.
First embodiment
Referring to Fig. 3, when drive circuit 1401 is one, for ease of subsequent descriptions, using the drive circuit 1401 as
First drive circuit 141, using load 20 as the first load 21.
Referring to Fig. 4, in first drive circuit 141：
One end of first amplifier U1 positive input and the 3rd resistor R3 in generating circuit from reference voltage 133 connects
Connect, the first amplifier U1 output end is connected with the 9th FET MOS9 grid.9th FET MOS9 source electrode point
It is not connected with the 5th resistance R5 one end and the first amplifier U1 reverse input end, the 9th FET MOS9 drain electrode and the
The connection of one load 21, the 5th resistance R5 other end ground connection.
First drive circuit 141 is by above-mentioned annexation, in the voltage that the first 21 input direct-current signals of load load
When keeping stable state, the reference voltage that the first amplifier U1 is obtained keeps constant, and the first amplifier U1 also exports a stabilization
Voltage to the 9th FET MOS9 grid.And then the 9th the FET MOS9 impedance of grid keep stable, enter one
Step, the load driving current for flowing through the 9th FET MOS9 is also constant.Therefore, the input power of the first load 21 keeps permanent
It is fixed.
Become big in the first 21 input direct-current signals of load, that is, when the voltage loaded becomes big, what the first amplifier U1 was obtained
Reference voltage is decreased to and compensation currents match.Now, the first amplifier U1 collect regulation sub-circuit feedback voltage it is obvious
It is greater than reference voltage.And then first amplifier U1 also export to the 9th FET MOS9 grids voltage reduction.And then the
The impedance increase of nine FET MOS9 grid, further, flow through the 9th FET MOS9 load driving current by
Reduce in the 9th FET MOS9 impedance increase, so that feedback voltage also accordingly reduces.When feedback voltage be decreased to
When reference voltage matches, the first amplifier U1, which is also exported to the voltage of the 9th FET MOS9 grids, no longer to be reduced.Now, by
Increase in the 9th FET MOS9 impedance, on the basis of the voltage increase that the first load 21 is loaded, flow through the 9th
Effect pipe MOS9 load driving current is less than normal current with corresponding ratio, therefore, the input power of the first load 21
Keep constant.
In the first 21 input direct-current signals of load by diminishing, that is, the voltage loaded becomes hour, and the first amplifier U1 is obtained
Reference voltage increase to compensation currents match.Now, the first amplifier U1 collect regulation sub-circuit feedback voltage show
So it is less than reference voltage.And then first amplifier U1 also export to the 9th FET MOS9 grids voltage increase.And then
The impedance of 9th FET MOS9 grid reduces, and further, flows through the 9th FET MOS9 load driving current
Because the 9th FET MOS9 impedance reduces and increase, so that feedback voltage also accordingly increases.When feedback voltage increases to
When being matched with reference voltage, the first amplifier U1, which is also exported to the voltage of the 9th FET MOS9 grids, no longer to be increased.Now,
Because the 9th FET MOS9 impedance reduces, on the basis of the voltage loaded reduces, the 9th FET MOS9 is flowed through
Load driving current reduced with ratio corresponding to corresponding ratio, but and be still less than normal current, therefore, the first load
21 input power also keeps constant.
In the present embodiment, in the case where direct current signal is less than starting offset voltage point, i.e., the first load 21 is loaded
Voltage when being maintained at a stable specific voltage, because compensation electric current is 0, the load driving current in the first 21 loops of load
Depending on the reference voltage of reference voltage chip Uref outputs, and the partial pressure of divider resistance string.Due to reference voltage, Yi Jifen
The partial pressure of piezoresistance string is fixed, therefore input power keeps constant in the electrical voltage point.Mended in the voltage loaded higher than starting
When repaying electrical voltage point, because compensation electric current is not 0, the load driving current in the first 21 loops of load depends on reference voltage chip
The reference voltage of Uref outputs, the partial pressure for compensating electric current and divider resistance string, and then the collective effect for passing through the three
In the voltage change loaded, load driving current is changed and changing inversely in proportion by corresponding voltage, and then therefore at this
State input power also keeps constant.
Second embodiment
Fig. 3 and Fig. 5 are referred to, in the drive circuit 1401：
When drive circuit 1401 is multiple, for example, for 4, it distinguishes the first drive circuit 141, second drive circuit
142nd, the 3rd drive circuit 143 and the 4th drive circuit 144.
Accordingly, load 20 is also 4, and it is respectively that the load 23 and the 4th of the first load 21, second load the 22, the 3rd is negative
Carry 24.The load 23 of first the 21, second load of load the 22, the 3rd and the 4th load 24 are sequentially connected in series.Generating circuit from reference voltage 133
Also include：6th resistance R6 and the 7th resistance R7.Wherein, the 6th resistance R6 one end is connected with the 4th resistance R4 other end,
The 6th resistance R6 other end is connected with the 7th resistance R7 one end, the 7th resistance R7 other end ground connection.
In the first drive circuit 141：In first amplifier U1 positive input and generating circuit from reference voltage 133
7th resistance R7 one end connection, the first amplifier U1 output end are connected with the 9th FET MOS9 grid.9th
Effect pipe MOS9 source electrode is connected with the 5th resistance R5 one end and the first amplifier U1 reverse input end respectively, the 9th effect
Should pipe MOS9 drain electrode 21 be connected with the first load.
In the second drive circuit 142：In second amplifier U2 positive input and generating circuit from reference voltage 133
6th resistance R6 one end connection, the second amplifier U2 output end are connected with the tenth FET MOS10 grid.Tenth
Effect pipe MOS10 source electrode is connected with the 5th resistance R5 one end and the second amplifier U2 reverse input end respectively, the tenth
Effect pipe MOS10 drain electrode is connected with the second load 22.
In the 3rd drive circuit 143：In 3rd amplifier U3 positive input and generating circuit from reference voltage 133
4th resistance R4 one end connection, the 3rd amplifier U3 output end are connected with the 11st FET MOS11 grid.Tenth
One FET MOS11 source electrode is connected with the 5th resistance R5 one end and the 3rd amplifier U3 reverse input end respectively, the
11 FET MOS11 drain electrode is connected with the 3rd load 23.
In the 4th drive circuit 144：In 4th amplifier U4 positive input and generating circuit from reference voltage 133
3rd resistor R3 one end connection, the 4th amplifier U4 output end are connected with the 12nd FET MOS12 grid.Tenth
Two FET MOS12 source electrode is connected with the 5th resistance R5 one end and the 4th amplifier U4 reverse input end respectively, the
12 FET MOS12 drain electrode is connected with the 4th load 24.
In addition, the 5th resistance R5 other end is also grounded.
By the annexation of above-mentioned drive module 140, due to 3rd resistor R3, the 4th resistance R4, the 6th resistance R6
Four different electric resistance partial pressures are constituted with the 7th resistance R7.And then with the increase and reduction of input rectifying signal, the first driving
Circuit 141, the second drive circuit 142, the drive circuit 144 of the 3rd drive circuit 143 to the 4th act successively, and operating principle
It is identical with first embodiment, and then when loading 20 voltages that are loaded and rising, first the 21, first load 21 of load plus the
Two load the 22, first loads 21 plus the second load 22 plus the 3rd load 23 and the first load 21 plus the second load 22 plus the 3rd load
23 add the 4th load 24 to realize that piecewise linearity works successively.Conversely, when loading the voltages decline that 20 are loaded, each load 20
Manner of execution is opposite with mode during foregoing rising.It is achieved that total input power also keeps dynamically balancing.
3rd embodiment
Referring to Fig. 6, the embodiments of the invention provide a kind of Poewr control method, the Poewr control method is applied to power
Power control module in control device, the Poewr control method include：Step S100 and step S200.
Step S100：The power control module judges whether the sample rate current exceedes threshold current.
Step S200：When to be, the power control module adjusts the load driving current of the drive module output,
To control the input power of the load to keep balance.
Referring to Fig. 7, in a kind of Poewr control method provided in an embodiment of the present invention, step S200 method sub-process
Including：Step S210 and step S220.
Step S210：When to be, the power control module exports the sample rate current and exceedes the threshold current
Compensation electric current corresponding to part.
Step S220：The power control module according to the compensation electric current, will regulation to the compensation currents match
Reference voltage output to the drive module so that the load driving current of drive module regulation output so that
The input power of the load keeps balance.
It is apparent to those skilled in the art that for convenience and simplicity of description, the method for foregoing description
Specific work process, may be referred to the corresponding process in aforementioned means, will not be repeated here.
In summary, the embodiments of the invention provide a kind of output control device, method and system.Device includes：Sampling
Module, power control module and drive module, power control module are connected with sampling module and drive module respectively, sampling module
Connected with drive module with load.Sampling module, the voltage of load is loaded into for sampling, to obtain adopt corresponding with voltage
Sample electric current, sample rate current is exported to power control module；Power control module, for judging whether sample rate current exceedes threshold value
Electric current, when to be, the load driving current of regulation drive module output, balance is kept with the input power of control load.
Whether power control module exceedes threshold current by the sample rate current in loop where judging output control device, when
When being judged to being, then power control module controls to adjust the load driving current of the output of drive module, with the defeated of control load
Enter power and keep balance.Therefore, no matter input to whether the input voltage of load changes, output control device can control negative
The input power of load keeps one dynamically to balance, so as to greatly improve load service life.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. output control device, it is characterised in that including：Sampling module, power control module and drive module, the work( Rate control module is connected with the sampling module and the drive module respectively, the sampling module and the drive module with Load connection；The sampling module, the voltage of the load is loaded into for sampling, to obtain sample rate current corresponding with the voltage, The sample rate current is exported to the power control module；The power control module, for judging whether the sample rate current exceedes threshold current, when to be, adjust the drive The load driving current of dynamic model block output, to control the input power of the load to keep balance.
- 2. output control device according to claim 1, it is characterised in that the power control module includes：First mirror As circuit, current comparison circuit and generating circuit from reference voltage；The current comparison circuit respectively with first mirror image circuit Connected with the generating circuit from reference voltage, first mirror image circuit is connected with the sampling module, the reference voltage production Raw circuit is connected with the drive module；First mirror image circuit, for obtaining the sample rate current, the sample rate current after mirror image is exported to the electricity Flow comparison circuit；The current comparison circuit, for judging whether the sample rate current exceedes threshold current set in advance, when to be, The sample rate current is exported more than the compensation electric current corresponding to the part of the threshold current to the generating circuit from reference voltage；The generating circuit from reference voltage, for according to the compensation electric current, will adjust to the ginseng with the compensation currents match Voltage output is examined to the drive module, so that the drive module adjusts the load driving current of output, so that described The input power of load keeps balance.
- 3. output control device according to claim 2, it is characterised in that the current comparison circuit includes：Current source Sub-circuit, compare sub-circuit and output sub-circuit, the relatively sub-circuit is sub with the current source sub-circuit, the output respectively Circuit connection is connected with first mirror image circuit, and the output sub-circuit is connected with the generating circuit from reference voltage；The current source sub-circuit, for generating and exporting the threshold current to the relatively sub-circuit；The relatively sub-circuit, for obtaining the sample rate current of the first mirror image circuit output, and judge the sampling Whether electric current is more than the threshold current obtained, when to be, exports the portion that the sample rate current exceedes the threshold current Point corresponding compensation electric current to the output sub-circuit so that the output sub-circuit by the compensation electric current export to The generating circuit from reference voltage.
- 4. output control device according to claim 3, it is characterised in that the relatively sub-circuit includes：5th effect Should manage with the 6th FET, the drain and gate of the 5th FET is connected with the current source sub-circuit, described The grid of 5th FET is connected with the grid of the 6th FET, the source electrode of the 5th FET and described the The source grounding of six FETs, the drain electrode of the 6th FET are electric with the first mirror image circuit and output respectively Road connects.
- 5. output control device according to claim 2, it is characterised in that the drive module includes：At least one drive Dynamic circuit, each drive circuit respectively connect with the power control module and a corresponding load.
- 6. output control device according to claim 5, it is characterised in that the drive circuit includes：Feedback sub-circuit With regulation sub-circuit, the feedback sub-circuit is distinguished the power control module and connected with the regulation sub-circuit, the regulation Sub-circuit connects with corresponding one load；The feedback sub-circuit, the load for adjusting the regulator circuit output according to the reference voltage drive electricity Stream, so that the feedback voltage of the regulation sub-circuit of collection matches with the reference voltage, so that the input work of the load Rate keeps balance.
- 7. output control device according to claim 6, it is characterised in that the output control device also includes：Rectification Module, the rectification module connect with the sampling module and the load.
- 8. a kind of Poewr control method, it is characterised in that applied to the power control module in output control device, described device Also include：Drive module, the power control module are connected with the drive module, and the drive module connects with load, institute The method of stating includes：The power control module judges whether sample rate current exceedes threshold current；When to be, the power control module adjusts the load driving current of the drive module output, described negative to control The input power of load keeps balance.
- 9. Poewr control method according to claim 8, it is characterised in that it is described when to be, adjust the driving mould The load driving current of block output, to control the input power of the load to keep balance, including：When to be, the power control module exports benefit of the sample rate current corresponding to more than the part of the threshold current Repay electric current；The power control module will be adjusted to the reference voltage output with the compensation currents match according to the compensation electric current To the drive module, so that the drive module adjusts the load driving current of output, so that the input of the load Power keeps balance.
- A kind of 10. power control system, it is characterised in that including：Load and the power as described in claim 1-9 any one Control device, the load are connected with the output control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710927639.8A CN107580395A (en) | 2017-09-30 | 2017-09-30 | Output control device, method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710927639.8A CN107580395A (en) | 2017-09-30 | 2017-09-30 | Output control device, method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107580395A true CN107580395A (en) | 2018-01-12 |
Family
ID=61040078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710927639.8A Pending CN107580395A (en) | 2017-09-30 | 2017-09-30 | Output control device, method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107580395A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418427A (en) * | 2018-02-13 | 2018-08-17 | 昂宝电子（上海）有限公司 | System and method for one or more of regulation power converter threshold value |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6201374B1 (en) * | 1998-05-14 | 2001-03-13 | 3Com Corporation | Voltage regulation and power switching system |
| US20050146903A1 (en) * | 2004-01-05 | 2005-07-07 | Ta-Yung Yang | Power-mode controlled power converter |
| US20070156258A1 (en) * | 2005-12-29 | 2007-07-05 | Micrel, Incorporated | Circuit and method for limiting power to a load |
| CN101629973A (en) * | 2009-06-09 | 2010-01-20 | 中国人民解放军国防科学技术大学 | High-precision current sampling circuit without operational amplifier for low voltage power supply |
| CN101951716A (en) * | 2010-09-30 | 2011-01-19 | 杭州电子科技大学 | Constant-on-time primary side constant-current control device for LED driver with high power factor |
| US20120074845A1 (en) * | 2010-09-29 | 2012-03-29 | Rohm Co., Ltd. | Automobile led driving device |
| US20130057234A1 (en) * | 2011-09-07 | 2013-03-07 | Leadtrend Technology Corporation | Control methods and power controllers with load compensation adapted for a power supply |
| WO2013138972A1 (en) * | 2012-03-19 | 2013-09-26 | Ye Jun | Led drive chip and circuit with power compensation |
| CN103401424A (en) * | 2013-07-19 | 2013-11-20 | 昂宝电子（上海）有限公司 | System and method for regulating output current of power supply transformation system |
| US20140015440A1 (en) * | 2012-07-09 | 2014-01-16 | Shenzhen Skyworth-RGB electronics Co. Ltd. | Constant current control circuit |
| CN103956905A (en) * | 2014-04-18 | 2014-07-30 | 昂宝电子（上海）有限公司 | System and method for adjusting output currents in power source transformation system |
| CN104244538A (en) * | 2014-10-10 | 2014-12-24 | 无锡华润矽科微电子有限公司 | Intelligent power control circuit |
| CN104349540A (en) * | 2013-08-09 | 2015-02-11 | 意法半导体研发(深圳)有限公司 | Driving device and method for luminous equipment |
| US20150163877A1 (en) * | 2011-10-14 | 2015-06-11 | Osram Gmbh | Led Control Circuit and a Controlling Method of the Same |
| CN104991597A (en) * | 2015-06-30 | 2015-10-21 | 南京矽力杰半导体技术有限公司 | Peak current control circuit |
| CN105043576A (en) * | 2015-08-13 | 2015-11-11 | 绵眠（上海）智能科技有限公司 | Direct-current heating apparatus temperature measurement system |
| DE102014012789A1 (en) * | 2014-08-27 | 2016-03-03 | Elmos Semiconductor Aktiengesellschaft | Device for controlling the operating current of an LED lamp unit |
| CN106131999A (en) * | 2016-06-23 | 2016-11-16 | 宁波芯辰微电子有限公司 | The constant current output circuit of a kind of LED drive power and method |
| CN206074779U (en) * | 2016-09-30 | 2017-04-05 | 江西工业工程职业技术学院 | A kind of numerical control constant current electronic load |
| CN107071982A (en) * | 2017-05-19 | 2017-08-18 | 深圳市晟碟半导体有限公司 | LED drive device and its invariable power light adjusting circuit, light-dimming method |
| CN207560385U (en) * | 2017-09-30 | 2018-06-29 | 深圳市富满电子集团股份有限公司 | Power control device and system |
-
2017
- 2017-09-30 CN CN201710927639.8A patent/CN107580395A/en active Pending
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6201374B1 (en) * | 1998-05-14 | 2001-03-13 | 3Com Corporation | Voltage regulation and power switching system |
| US20050146903A1 (en) * | 2004-01-05 | 2005-07-07 | Ta-Yung Yang | Power-mode controlled power converter |
| US20070156258A1 (en) * | 2005-12-29 | 2007-07-05 | Micrel, Incorporated | Circuit and method for limiting power to a load |
| CN101629973A (en) * | 2009-06-09 | 2010-01-20 | 中国人民解放军国防科学技术大学 | High-precision current sampling circuit without operational amplifier for low voltage power supply |
| US20120074845A1 (en) * | 2010-09-29 | 2012-03-29 | Rohm Co., Ltd. | Automobile led driving device |
| CN101951716A (en) * | 2010-09-30 | 2011-01-19 | 杭州电子科技大学 | Constant-on-time primary side constant-current control device for LED driver with high power factor |
| US20130057234A1 (en) * | 2011-09-07 | 2013-03-07 | Leadtrend Technology Corporation | Control methods and power controllers with load compensation adapted for a power supply |
| US20150163877A1 (en) * | 2011-10-14 | 2015-06-11 | Osram Gmbh | Led Control Circuit and a Controlling Method of the Same |
| WO2013138972A1 (en) * | 2012-03-19 | 2013-09-26 | Ye Jun | Led drive chip and circuit with power compensation |
| US20140015440A1 (en) * | 2012-07-09 | 2014-01-16 | Shenzhen Skyworth-RGB electronics Co. Ltd. | Constant current control circuit |
| CN103401424A (en) * | 2013-07-19 | 2013-11-20 | 昂宝电子（上海）有限公司 | System and method for regulating output current of power supply transformation system |
| CN104349540A (en) * | 2013-08-09 | 2015-02-11 | 意法半导体研发(深圳)有限公司 | Driving device and method for luminous equipment |
| CN103956905A (en) * | 2014-04-18 | 2014-07-30 | 昂宝电子（上海）有限公司 | System and method for adjusting output currents in power source transformation system |
| DE102014012789A1 (en) * | 2014-08-27 | 2016-03-03 | Elmos Semiconductor Aktiengesellschaft | Device for controlling the operating current of an LED lamp unit |
| CN104244538A (en) * | 2014-10-10 | 2014-12-24 | 无锡华润矽科微电子有限公司 | Intelligent power control circuit |
| CN104991597A (en) * | 2015-06-30 | 2015-10-21 | 南京矽力杰半导体技术有限公司 | Peak current control circuit |
| CN105043576A (en) * | 2015-08-13 | 2015-11-11 | 绵眠（上海）智能科技有限公司 | Direct-current heating apparatus temperature measurement system |
| CN106131999A (en) * | 2016-06-23 | 2016-11-16 | 宁波芯辰微电子有限公司 | The constant current output circuit of a kind of LED drive power and method |
| CN206074779U (en) * | 2016-09-30 | 2017-04-05 | 江西工业工程职业技术学院 | A kind of numerical control constant current electronic load |
| CN107071982A (en) * | 2017-05-19 | 2017-08-18 | 深圳市晟碟半导体有限公司 | LED drive device and its invariable power light adjusting circuit, light-dimming method |
| CN207560385U (en) * | 2017-09-30 | 2018-06-29 | 深圳市富满电子集团股份有限公司 | Power control device and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418427A (en) * | 2018-02-13 | 2018-08-17 | 昂宝电子（上海）有限公司 | System and method for one or more of regulation power converter threshold value |
| CN108418427B (en) * | 2018-02-13 | 2020-07-14 | 昂宝电子（上海）有限公司 | System and method for adjusting one or more thresholds in a power converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202310187U (en) | Driving circuit of luminous element, luminous device using same, and electronic equipment | |
| CN103595018B (en) | Over-voltage protecting circuit, LED backlight drive circuit and liquid crystal displayer | |
| KR100844052B1 (en) | Regulator circuit and control method thereof | |
| CN104917455A (en) | Inverting apparatus and photovoltaic power system using the same | |
| CN105656307B (en) | Charge pump circuit and gate turn-on voltage generative circuit | |
| CN108809063B (en) | A kind of driving boostrap circuit of full Embedded | |
| CN103365332B (en) | Overcurrent protection circuit and power supply device | |
| CN109921641A (en) | A kind of control circuit and its control method of adaptive difference current mould | |
| CN207560385U (en) | Power control device and system | |
| CN102290984A (en) | Charge pump voltage-stabilizing circuit, method for improving output accuracy of same and storage chip | |
| CN109634338A (en) | Power circuit, control method and display system | |
| CN106132031B (en) | A kind of ripple eliminates circuit, ripple removing method and applies its LED circuit | |
| CN107580395A (en) | Output control device, method and system | |
| CN104980012B (en) | A kind of Quick soft-start circuit | |
| CN106685193B (en) | High pressure LDO circuit based on charge pump | |
| CN108363450B (en) | A kind of power supply circuit, terminal device and its method for controlling power supply | |
| CN106959718A (en) | Adjuster | |
| WO2015192724A1 (en) | On-chip power supply network | |
| CN101364797B (en) | Active voltage clamping grid driver circuit | |
| CN103631300B (en) | Load power source at floating potential | |
| CN106849629A (en) | A kind of protection circuit and LED drive circuit | |
| CN206294076U (en) | A kind of Novel DC mu balanced circuit | |
| CN107358919A (en) | A kind of OLED screen curtain grey menu water ripples suppress and removal device | |
| CN108649798A (en) | A kind of high-power linear power supply and its control circuit | |
| CN206947931U (en) | A kind of AC power overvoltage crowbar with Surge suppression |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 518000 1701, building 1, Shenzhen new generation industrial park, 136 Zhongkang Road, Meidu community, Meilin street, Futian District, Shenzhen City, Guangdong Province Applicant after: Fuman microelectronics Group Co.,Ltd. Address before: 518000 18 / F, west area, Shidai science and technology building, nongyuan Road, Futian District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN FUMAN ELECTRONIC GROUP Co.,Ltd. |