CN206618835U - Multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit, chip - Google Patents
Multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit, chip Download PDFInfo
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- CN206618835U CN206618835U CN201720399838.1U CN201720399838U CN206618835U CN 206618835 U CN206618835 U CN 206618835U CN 201720399838 U CN201720399838 U CN 201720399838U CN 206618835 U CN206618835 U CN 206618835U
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Abstract
The utility model discloses a kind of multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit, chip, belong to technical field of integrated circuits.Wherein, the circuit includes multiple comparing units and the logic unit being sequentially connected, and the multiple comparing unit at least includes three, respectively the first comparing unit, the second comparing unit, the 3rd comparing unit.The utility model is repeatedly screened by high-speed comparator array to multiple signals, the extreme value in multiple signals can be obtained, such as voltage peak and voltage minimum, and over-pressed or under-voltage judgement can be carried out to voltage peak and voltage minimum, over-pressed or under-voltage passage is positioned simultaneously, with fast response time, precision is high, positions reliable advantage.
Description
Technical field
The utility model is related to technical field of integrated circuits, more particularly to a kind of multichannel pole based on high-speed comparator array
Value compares and positioning circuit, chip.
Background technology
Generally there is multiple-channel output passage, and have necessarily to the voltage or electric current of each road output channel in IC products
Required precision, it is therefore desirable to these passages are monitored and controlled in real time, and find out the minimum voltage value in all passages,
It is used as the feedback voltage signal in feedback control loop.Simultaneously, it is also desirable to find out the minimum voltage value and maximum voltage value of all passages,
It is used as under-voltage protection and the comparison signal of overvoltage protection.
However, how rapidly and accurately to find out the minimum voltage value and maximum voltage value in all passages, and it can determine
Passage where the position minimum voltage value and maximum voltage value, is a problem.
Utility model content
In order to solve problem of the prior art, the utility model embodiment provides a kind of based on high-speed comparator array
Multichannel ratio of extreme values compared with positioning circuit, chip.The technical scheme is as follows：
On the one hand there is provided a kind of multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit, including successively
The multiple comparing units and logic unit of connection, wherein, the multiple comparing unit at least includes three, the respectively first ratio
Compared with unit, the second comparing unit, the 3rd comparing unit；
First comparing unit inputs plurality of voltages signal, and the plurality of voltages signal of input is carried out into voltage levels ratio
After relatively, second comparing unit is outputed voltage signal to, and output logic signal is to the logic unit；
After the voltage signal of input is carried out voltage levels relatively by second comparing unit, output voltage signal to described
3rd comparing unit, and output logic signal is to the logic unit；
After the voltage signal of input is carried out voltage levels relatively by the 3rd comparing unit, output HIGH voltage signal and low
Voltage signal is to the logic unit, and output logic signal is to the logic unit；
The logic unit carries out logical process, output to the logical signal, high voltage signal and low voltage signal of input
Over-pressed positioning signal and under-voltage positioning signal.
Further, first comparing unit includes four identical first comparators, each first comparator
The two-way voltage signal of input is compared, and the high voltage signal all the way of wherein voltage is exported to institute from high-voltage output end
The second comparing unit is stated, the low voltage signal all the way of voltage is exported to second comparing unit from low-voltage output, meanwhile,
The logical signal output end output logic signal of the first comparator is to the logic unit.
Further, second comparing unit includes two identical high voltage comparators and two identical low-voltages
Comparator, the high voltage comparator is compared the voltage signal that two-way is exported from the high-voltage output end of the first comparator
Compared with, and the high voltage signal all the way of wherein voltage is exported to the 3rd comparing unit, meanwhile, the high voltage comparator
Logical signal output end output logic signal is to the logic unit；The low-voltage comparator compares two-way from described first
The voltage signal of the low-voltage output output of device is compared, and the low voltage signal all the way of wherein voltage is exported to described the
Three comparing units, meanwhile, the logical signal output end output logic signal of the low-voltage comparator to the logic unit.
Further, the 3rd comparing unit includes peak comparator and minimum comparator, the peak ratio
The voltage signal of two high voltage comparators outputs is compared compared with device, and output HIGH voltage signal is to the logic list
Member, meanwhile, the logical signal output end output logic signal of the peak comparator to the logic unit；The minimum
The voltage signal of two low-voltage comparator outputs is compared by comparator, and exports low voltage signal to the logic
Unit, meanwhile, the logical signal output end output logic signal of the minimum comparator to the logic unit.
Further, the high voltage signal is compared by the logic unit with the first reference voltage, generation first
Reference signal, and first reference signal and the logical signal are subjected to logical process, output overvoltage positioning signal；It is described
The low voltage signal is compared by logic unit with the second reference voltage, generates the second reference signal, and by described second
Reference signal and the logical signal carry out logical process, export under-voltage positioning signal.
On the other hand there is provided a kind of chip, including the multichannel ratio of extreme values based on high-speed comparator array is electric compared with positioning
Road, the multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit include multiple comparing units for being sequentially connected with
And logic unit, wherein, the multiple comparing unit at least include three, respectively the first comparing unit, the second comparing unit,
3rd comparing unit；
First comparing unit inputs plurality of voltages signal, and the plurality of voltages signal of input is carried out into voltage levels ratio
After relatively, second comparing unit is outputed voltage signal to, and output logic signal is to the logic unit；
After the voltage signal of input is carried out voltage levels relatively by second comparing unit, output voltage signal to described
3rd comparing unit, and output logic signal is to the logic unit；
After the voltage signal of input is carried out voltage levels relatively by the 3rd comparing unit, output HIGH voltage signal and low
Voltage signal is to the logic unit, and output logic signal is to the logic unit；
The logic unit carries out logical process, output to the logical signal, high voltage signal and low voltage signal of input
Over-pressed positioning signal and under-voltage positioning signal.
Further, first comparing unit includes four identical first comparators, each first comparator
The two-way voltage signal of input is compared, and the high voltage signal all the way of wherein voltage is exported to institute from high-voltage output end
The second comparing unit is stated, the low voltage signal all the way of voltage is exported to second comparing unit from low-voltage output, meanwhile,
The logical signal output end output logic signal of the first comparator is to the logic unit.
Further, second comparing unit includes two identical high voltage comparators and two identical low-voltages
Comparator, the high voltage comparator is compared the voltage signal that two-way is exported from the high-voltage output end of the first comparator
Compared with, and the high voltage signal all the way of wherein voltage is exported to the 3rd comparing unit, meanwhile, the high voltage comparator
Logical signal output end output logic signal is to the logic unit；The low-voltage comparator compares two-way from described first
The voltage signal of the low-voltage output output of device is compared, and the low voltage signal all the way of wherein voltage is exported to described the
Three comparing units, meanwhile, the logical signal output end output logic signal of the low-voltage comparator to the logic unit.
Further, the 3rd comparing unit includes peak comparator and minimum comparator, the peak ratio
The voltage signal of two high voltage comparators outputs is compared compared with device, and output HIGH voltage signal is to the logic list
Member, meanwhile, the logical signal output end output logic signal of the peak comparator to the logic unit；The minimum
The voltage signal of two low-voltage comparator outputs is compared by comparator, and exports low voltage signal to the logic
Unit, meanwhile, the logical signal output end output logic signal of the minimum comparator to the logic unit.
Further, the high voltage signal is compared by the logic unit with the first reference voltage, generation first
Reference signal, and first reference signal and the logical signal are subjected to logical process, output overvoltage positioning signal；It is described
The low voltage signal is compared by logic unit with the second reference voltage, generates the second reference signal, and by described second
Reference signal and the logical signal carry out logical process, export under-voltage positioning signal.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
The utility model embodiment is repeatedly screened by high-speed comparator array to multiple signals, can obtain multichannel
Extreme value in signal, such as voltage peak and voltage minimum, and voltage peak and voltage minimum can be carried out
Pressure or under-voltage judgement, while being positioned to over-pressed or under-voltage passage, with fast response time, precision is high, and positioning is reliable
Advantage.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is that the multichannel ratio of extreme values based on high-speed comparator array that the utility model embodiment one is provided is electric compared with positioning
Road schematic diagram；
Fig. 2 is that the multichannel ratio of extreme values based on high-speed comparator array that the utility model embodiment one is provided is electric compared with positioning
The circuit diagram of extreme value rating unit in road；
Fig. 3 is that the multichannel ratio of extreme values based on high-speed comparator array that the utility model embodiment one is provided is electric compared with positioning
The circuit diagram of channel location part in road；
Fig. 4 is that the multichannel ratio of extreme values based on high-speed comparator array that the utility model embodiment one is provided is electric compared with positioning
A kind of circuit diagram of comparator in road.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is described in further detail.
Embodiment one
The utility model embodiment provide a kind of multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit,
Referring to Fig. 1, including the multiple comparing units and logic unit 40 being sequentially connected, wherein, the multiple comparing unit is at least wrapped
Include three, respectively the first comparing unit 10, the second comparing unit 20, the 3rd comparing unit 30；
First comparing unit 10 inputs plurality of voltages signal, and the plurality of voltages signal of input is carried out into voltage levels
After comparing, second comparing unit 20, output logic signal to the logic unit 40 are outputed voltage signal to；
After the voltage signal of input is carried out voltage levels relatively by second comparing unit 20, institute is outputed voltage signal to
State the 3rd comparing unit 30, and output logic signal is to the logic unit 40；
After the voltage signal of input is carried out voltage levels relatively by the 3rd comparing unit 30, output HIGH voltage signal and
Low voltage signal is to the logic unit 40, and output logic signal is to the logic unit 40；
Logical signal, high voltage signal and the low voltage signal of 40 pairs of inputs of logic unit carry out logical process, defeated
Go out over-pressed positioning signal and under-voltage positioning signal.
Specifically, above-mentioned multiple comparing units carry out the multiplexer channel voltage signal of input according to voltage levels multiple
Compare, until comparing voltage peak and voltage minimum in multiplexer channel voltage signal, i.e., final high voltage signal
And low voltage signal, the logical signal that logic unit exports high voltage signal, low voltage signal and each comparing unit
Carry out logical process, output overvoltage positioning signal and under-voltage positioning signal.This is over-pressed or under-voltage, and which positioning signal is able to indicate that
Paths are over-pressed or under-voltage.
It should be noted that the ratio of extreme values compared with the quantity of the comparing unit included with positioning circuit is determined by the quantity of passage
It is fixed.
For example when number of channels is 8 tunnel, the ratio of extreme values includes three comparing units compared with positioning circuit, wherein, first
8 road signals are carried out first time comparison by comparing unit 10, and the higher signal of 4 road voltages of output and the relatively low signal of 4 road voltages are extremely
Second comparing unit 20, the second comparing unit 20 exports 2 higher road voltages of voltage in the higher signal of 4 road voltages after relatively
The lower 2 road voltage signals to the 3rd comparing unit 30 of voltage, the 3rd comparing unit 30 in signal and the relatively low signal of 4 road voltages
Voltage peak therein and voltage minimum are exported after relatively.
For another example when number of channels is 16 tunnel, the ratio of extreme values includes four comparing units compared with positioning circuit, now,
Only need to increase a comparing unit newly before the 3rd comparing unit, now, it is higher that the first comparing unit 10 exports 8 road voltages
Signal and the relatively low signal of 8 road voltages, the second comparing unit 20 export the higher 4 roads electricity of voltage in the higher signal of 8 road voltages
4 lower road voltage signals of voltage are to newly-increased comparing unit in pressure signal and the relatively low signal of 8 road voltages, and newly-increased comparison is single
After member further compares, the higher signal of 2 road voltages and the lower signal of 2 road voltages are exported to the 3rd comparing unit 30, the 3rd
Comparing unit 30 exports voltage peak therein and voltage minimum after relatively.
For the number of channels of other quantity, repeatedly compared with reference to above-mentioned thinking, the final voltage until comparing
Peak and voltage minimum.
It is specific compared with being carried out with the concrete signal processing procedure of positioning circuit to ratio of extreme values below by taking 8 road voltage signals as an example
Explanation.
Referring to Fig. 2, in the present embodiment, first comparing unit 10 includes four identical first comparators, each
The two-way voltage signal of input is compared by the first comparator, and by the high voltage signal all the way of wherein voltage from high pressure
Output end (L output ends) output is to second comparing unit 20, by the low voltage signal all the way of voltage from low-voltage output (S
Output end) export to second comparing unit 20, meanwhile, the logical signal output end output logic letter of the first comparator
Number to the logic unit.
In the present embodiment, comparator COMP includes positive input terminal, negative input end, and L output ends, S output ends and patrols
Signal output part SK is collected, wherein positive input terminal, negative input end is respectively connected to FB voltage signals all the way, compared by comparator COMP
Afterwards, wherein the higher signals of FB all the way of voltage are exported from L output ends, and the relatively low signals of FB all the way of voltage are exported from S output ends, together
When logical signal output end SK output logic signal SK, the FB signals accessed when positive input terminal are than FB signals that negative input end is accessed
Gao Shi, the logical signal SK of output is logical one signal, when the FB signals that positive input terminal is accessed are believed than the FB that negative input end is accessed
When number low, the logical signal SK of output is logical zero signal.
Specifically, the first comparing unit 10 includes four comparator COMP1-COMP4, and input altogether has the tunnels of FB1-FB8 eight
Signal, this four comparator COMP are compared 8 FB voltages two-by-two, select 4 high values and 4 lower values.With COMP1
Exemplified by, FB1 and FB2 through COMP1 relatively after, the higher value of voltage is exported to the second comparing unit from L output ends in FB1 and FB2
Relatively low value is exported to the COMP6 of the second comparing unit 20 from S output ends in 20 COMP5, FB1 and FB2, meanwhile, COMP1 is defeated
Go out logical signal SK1 to logic unit 40.The like, 4 high values and 4 lower values, and 4 logical signals are exported altogether
SK1-SK4。
Referring again to Fig. 2, in the present embodiment, second comparing unit 20 includes two identical high voltage comparators
With two identical low-voltage comparators, the high voltage comparator exports two-way from the first comparator L output ends
Voltage signal is compared, and the high voltage signal all the way of wherein voltage is exported to the 3rd comparing unit 30, meanwhile, institute
The logical signal output end output logic signal of high voltage comparator is stated to the logic unit 40；The low-voltage comparator will
The voltage signal that two-way is exported from the first comparator S output ends is compared, and the low voltage all the way of wherein voltage is believed
Number output to the 3rd comparing unit 30, meanwhile, the logical signal output end output logic signal of the low-voltage comparator
To the logic unit 40.
Specifically, the second comparator unit 20 equally includes four comparators, and wherein COMP5 and COMP7 are high voltage
Comparator, COMP6 and COMP8 are low-voltage comparator.By 4 voltage high values being exported to first comparator unit 10 and
4 voltage lower values are further compared, and select 2 much higher value and 2 more low values.By taking high voltage comparator COMP5 as an example,
COMP1 and COMP2 output high value through COMP5 relatively after, wherein higher value is exported to the 3rd from COMP5 L output ends
The COMP9 of comparing unit 30, meanwhile, COMP5 output logic signals SK5.The like, 2 much higher value are selected altogether, 2 lower
Value and 4 logic signal values SK5, SK8, SK6, SK9.
It should be noted that the comparator of the comparator of the second comparing unit 20 and the first comparing unit 10 is the same,
Difference is that comparator L, S output end in the first comparing unit 10 are attached with subsequent conditioning circuit, and the second comparing unit
Comparator L, S output end in 20 is only chosen one and is attached with subsequent conditioning circuit.
Referring again to Fig. 2, in the present embodiment, the 3rd comparing unit 30 includes peak comparator and minimum ratio
Compared with device, the voltage signal that two high voltage comparators are exported is compared by the peak comparator, and exports high electricity
Signal is pressed to the logic unit 40, meanwhile, the logical signal output end output logic signal of the peak comparator to institute
State logic unit 40；The voltage signal of two low-voltage comparator outputs is compared by the minimum comparator, and
Low voltage signal is exported to the logic unit 40, meanwhile, the logical signal output end output logic of the minimum comparator
Signal is to the logic unit 40.
Specifically, the 3rd comparing unit 30 includes two comparators, respectively peak comparator COMP9 and minimum
Comparator COMP10, and the comparator that the 3rd comparing unit 30 includes is similar with the second comparing unit 20, and L, S of comparator are defeated
Going out end, only selection one is attached with subsequent conditioning circuit.By taking peak comparator COMP9 as an example, the electricity of COMP5 and COMP7 outputs
Press much higher value through COMP9 relatively after, wherein higher value, i.e. high voltage signal MAX_SEL, from COMP9 L output ends export to
Logic unit 40, meanwhile, COMP9 output logic signals SK7 to logic unit 40.For minimum comparator COMP10, COMP6
The voltage more low value exported with COMP8 through COMP10 relatively after, wherein lower value, i.e. low voltage signal MIN_SEL, from
COMP10 S output ends are exported to logic unit 40, meanwhile, COMP10 output logic signals SK10 to logic unit 40.
Referring to Fig. 3, in the present embodiment, the logic unit 40 carries out the high voltage signal and the first reference voltage
Compare, generate the first reference signal, and first reference signal and the logical signal are subjected to logical process, output overvoltage
Positioning signal；The low voltage signal is compared by the logic unit 40 with the second reference voltage, and generation second is with reference to letter
Number, and second reference signal and the logical signal are subjected to logical process, export under-voltage positioning signal.
Specifically, the logic unit 40 includes two comparators of COMP11 and COMP12 and LOGIC modules.Its
In, comparator COMP11 and COMP12 hardware configuration are as COMP1-COMP10, due to followed by logical process, because
And logic unit 40 only needs to logical signal output end being attached with subsequent conditioning circuit, L output ends and S is not recycled to export
End, referring to Fig. 2 and Fig. 3, in order to be distinguished, comparator COMP has selected different schematic symbols in figs. 2 and 3.For
LOGIC modules, LOGIC modules can carry out logical process according to the logical relation of setting, such as logic true value table.
In the present embodiment, it is possible to which comparator COMP and the LOGIC module for realizing corresponding function in the present embodiment is existing
Have technology, for example, with reference to Fig. 4, Fig. 4 shows a kind of comparator, can realize the function of COMP11 in Fig. 3, wherein, INN and
INP is two inputs of the comparator, and corresponding to COMP11 positive-negative input end, COMP_OUT output ends correspond to COMP11
Logical signal output end, when INN voltages be higher than INP when, output signal COMP_OUT by low level upset be high level；M1 and
M2 plays positive feedback acceleration, can accelerate rotary movement；GND is earth terminal, and VDD is upper electric end, and EN is used for enable signal
The comparator is turned on and off,
Referring again to Fig. 3, in the present embodiment, COMP11 is by high voltage signal MAX_SEL and the first reference voltage VREF1
It is compared, exports the first reference signal OV, LOGIC module by the first reference signal OV and first to the 3rd comparing unit
The logical signal of output carries out logical process, output overvoltage positioning signal OVx；COMP12 is by the low voltage signal MIN_SEL
It is compared with the second reference voltage VREF2, exports the second reference signal UV, LOGIC module by the second reference signal UV
Logical process is carried out with the logical signal that the first to the 3rd comparing unit is exported, under-voltage positioning signal UVx is exported.
For overpressure situation, VREF1 is the first reference voltage, i.e., overvoltage threshold when over-pressed, such as 2V, it is assumed that passage electricity
When pressure exceedes the overvoltage threshold, then passage overvoltage.When the high voltage signal MAX_SEL selected by COMP11 is higher than VREF1,
The then passage overvoltage where high voltage signal MAX_SEL, now, the first reference signal OV of output is electric for height by low level upset
Flat, LOGIC modules are under the first reference signal OV of high level triggering, and the logic true value table based on SK1-SK7 carries out logic
Processing, output overvoltage positioning signal OVx, and then oriented pressure passageway for example, when OVx is OV1, shows logical where FB1
Road overvoltage.Also, the OVx of the passage is high level by low level upset, and then turns off the passage.As selected MAX_SEL
When lower than VREF1, the first reference signal OV of output is low level, because voltage highest high voltage is believed in all channel voltages
Number not over-pressed, then all passages are not over-pressed, now, and the first reference signal OV continues to keep low level, and LOGIC modules are not
Action.
For undervoltage condition, VREF2 is the second reference voltage, i.e., brownout threshold when under-voltage, such as 0.1V, it is assumed that passage
When voltage is less than the overvoltage threshold, then the passage is under-voltage.When the low voltage signal MIN_SEL selected by COMP12 is lower than VREF2
When, then the passage where low voltage signal MIN_SEL is under-voltage, now, and the second reference signal UV of output is by low level upset
High level, LOGIC modules are under the second reference signal UV of high level triggering, the logical truth based on SK1-SK4, SK8-SK10
It is worth table and carries out logical process, export under-voltage positioning signal UVx, and then orients under-voltage passage, for example, when UVx is UV1, table
Passage where bright FB1 is under-voltage.Also, the UVx of the passage is high level by low level upset, and then turns off the passage.Work as institute
When the MIN_SEL selected is higher than VREF2, the second reference signal UV of output is low level, because voltage is minimum in all passages
Low voltage signal it is not under-voltage, then all passages are not under-voltage, now, the second reference signal UV continue keep low level,
LOGIC modules are failure to actuate.
Referring to table one, table one shows the logic true value table for judging overpressure situation.
Table one
| MAX_FB | SK1 | SK2 | SK3 | SK4 | SK5 | SK6 | SK7 |
| FB1 | 1 | x | x | x | 1 | x | 1 |
| FB2 | 0 | x | x | x | 1 | x | 1 |
| FB3 | x | 1 | x | x | 0 | x | 1 |
| FB4 | x | 0 | x | x | 0 | x | 1 |
| FB5 | x | x | 1 | x | x | 1 | 0 |
| FB6 | x | x | 0 | x | x | 1 | 0 |
| FB7 | x | x | x | 1 | x | 0 | 0 |
| FB8 | x | x | x | 0 | x | 0 | 0 |
In table one, x represents arbitrary value.LOGIC modules can orient overvoltage logical by SK1-SK7 logic signal value
Road.By taking passage overvoltage where FB4 as an example, when passage is over-pressed where FB4, SK1-SK7 logic signal value is SK2=0, SK5
=0, SK7=1, SK1, SK3, SK4, SK6 are x, it is, work as SK2=0, SK5=0, SK7=1, SK1, SK3, SK4, SK6 are
During x, passage overvoltage where FB4.
When passage is under-voltage, it is identical with the generation principle of the over-pressed counterlogic of passage, and logic is negated i.e. each other
Can, it will not be repeated here.
It should be noted that in initial state, all OVx passages are defaulted as low level, when electric on circuit, into real-time inspection
After survey state, circuit selects the high voltage signal of maximum passage and the first reference signal is compared, if high voltage signal
Still the first reference signal, i.e. overvoltage threshold are not above, then the passage and rest channels continue to keep low level state,
That is normal operating conditions；If high voltage signal has exceeded overvoltage threshold, then the OVx for corresponding to this maximum passage just occurs
State is overturn, and high level is changed into from low level, so that the output channel is closed, and other passages then continue to low level, but
It is to select high voltage signal again in remaining passage immediately, over-pressed comparison is carried out again, by that analogy.
The utility model embodiment is repeatedly screened by high-speed comparator array to multiple signals, can obtain multichannel
Extreme value in signal, such as voltage peak and voltage minimum, and voltage peak and voltage minimum can be carried out
Pressure or under-voltage judgement, while being positioned to over-pressed or under-voltage passage, with fast response time, precision is high, and positioning is reliable
Advantage.
Embodiment two
The utility model embodiment provides a kind of chip, including described in embodiment one based on high-speed comparator array
Multichannel ratio of extreme values compared with positioning circuit, the multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit include successively
The multiple comparing units and logic unit of connection, wherein, the multiple comparing unit at least includes three, the respectively first ratio
Compared with unit, the second comparing unit, the 3rd comparing unit；
First comparing unit inputs plurality of voltages signal, and the plurality of voltages signal of input is carried out into voltage levels ratio
After relatively, second comparing unit, output logic signal to the logic unit are outputed voltage signal to；
After the voltage signal of input is carried out voltage levels relatively by second comparing unit, output voltage signal to described
3rd comparing unit, and output logic signal is to the logic unit；
After the voltage signal of input is carried out voltage levels relatively by the 3rd comparing unit, output HIGH voltage signal and low
Voltage signal is to the logic unit, and output logic signal is to the logic unit；
The logic unit carries out logical process, output to the logical signal, high voltage signal and low voltage signal of input
Over-pressed positioning signal and under-voltage positioning signal.
In the present embodiment, first comparing unit includes four identical first comparators, each first ratio
The two-way voltage signal of input is compared compared with device, and the high voltage signal all the way of wherein voltage is exported from high-voltage output end
To second comparing unit, the low voltage signal all the way of voltage is exported to second comparing unit from low-voltage output,
Meanwhile, the logical signal output end output logic signal of the first comparator to the logic unit.
In the present embodiment, second comparing unit includes two identical high voltage comparators and two identicals are low
Voltage comparator, the high voltage comparator enters the voltage signal that two-way is exported from the high-voltage output end of the first comparator
Row compares, and the high voltage signal all the way of wherein voltage is exported to the 3rd comparing unit, meanwhile, the high voltage compares
The logical signal output end output logic signal of device is to the logic unit；The low-voltage comparator is by two-way from described first
The voltage signal of the low-voltage output output of comparator is compared, and the low voltage signal all the way of wherein voltage is exported to institute
The 3rd comparing unit is stated, meanwhile, the logical signal output end output logic signal of the low-voltage comparator to the logic list
Member.
In the present embodiment, the 3rd comparing unit includes peak comparator and minimum comparator, the highest
The voltage signal of two high voltage comparator outputs is compared by value comparator, and output HIGH voltage signal is patrolled to described
Volume unit, meanwhile, the logical signal output end output logic signal of the peak comparator to the logic unit；It is described most
The voltage signal of two low-voltage comparators outputs is compared by low value comparator, and exports low voltage signal to described
Logic unit, meanwhile, the logical signal output end output logic signal of the minimum comparator to the logic unit.
In the present embodiment, the high voltage signal is compared by the logic unit with the first reference voltage, generation
First reference signal, and first reference signal and the logical signal are subjected to logical process, output overvoltage positioning signal；
The low voltage signal is compared by the logic unit with the second reference voltage, generates the second reference signal, and will be described
Second reference signal and the logical signal carry out logical process, export under-voltage positioning signal.
The utility model embodiment is repeatedly screened by high-speed comparator array to multiple signals, can obtain multichannel
Extreme value in signal, such as voltage peak and voltage minimum, and voltage peak and voltage minimum can be carried out
Pressure or under-voltage judgement, while being positioned to over-pressed or under-voltage passage, with fast response time, precision is high, and positioning is reliable
Advantage.
Above-mentioned the utility model embodiment sequence number is for illustration only, and the quality of embodiment is not represented.
Device embodiment described above is only schematical, wherein the unit illustrated as separating component can
To be or may not be physically separate, the part shown as unit can be or may not be physics list
Member, you can with positioned at a place, or can also be distributed on multiple NEs.It can be selected according to the actual needs
In some or all of module realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Work in the case of, you can to understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
Realized by the mode of software plus required general hardware platform, naturally it is also possible to pass through hardware.Understood based on such, on
The part that technical scheme substantially in other words contributes to prior art is stated to embody in the form of software product, should
Computer software product can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD, including some fingers
Order is to cause a computer equipment (can be personal computer, server, or network equipment etc.) to perform each implementation
Method described in some parts of example or embodiment.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (10)
1. a kind of multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit, it is characterised in that including being sequentially connected
Multiple comparing units and logic unit, wherein, the multiple comparing unit at least includes three, and respectively first is relatively single
Member, the second comparing unit, the 3rd comparing unit；
First comparing unit inputs plurality of voltages signal, and the plurality of voltages signal of input is carried out into voltage levels comparison
Afterwards, second comparing unit is outputed voltage signal to, and output logic signal is to the logic unit；
After the voltage signal of input is carried out voltage levels relatively by second comparing unit, the described 3rd is outputed voltage signal to
Comparing unit, and output logic signal is to the logic unit；
After the voltage signal of input is carried out voltage levels relatively by the 3rd comparing unit, output HIGH voltage signal and low-voltage
Signal is to the logic unit, and output logic signal is to the logic unit；
The logic unit carries out logical process, output overvoltage to the logical signal, high voltage signal and low voltage signal of input
Positioning signal and under-voltage positioning signal.
2. the multichannel ratio of extreme values according to claim 1 based on high-speed comparator array compared with positioning circuit, its feature exists
In first comparing unit includes four identical first comparators, and each first comparator is electric by the two-way of input
Pressure signal is compared, and the high voltage signal all the way of wherein voltage is exported into single to the described second comparison from high-voltage output end
Member, the low voltage signal all the way of voltage is exported to second comparing unit from low-voltage output, meanwhile, described first compares
The logical signal output end output logic signal of device is to the logic unit.
3. the multichannel ratio of extreme values according to claim 2 based on high-speed comparator array compared with positioning circuit, its feature exists
In second comparing unit includes two identical high voltage comparators and two identical low-voltage comparators, the height
The voltage signal that two-way is exported from the high-voltage output end of the first comparator is compared by voltage comparator, and will be wherein electric
The high voltage signal all the way of pressure is exported to the 3rd comparing unit, meanwhile, the logical signal output of the high voltage comparator
Output logic signal is held to the logic unit；The low-voltage comparator exports two-way from the low pressure of the first comparator
The voltage signal of end output is compared, and the low voltage signal all the way of wherein voltage is exported to the 3rd comparing unit,
Meanwhile, the logical signal output end output logic signal of the low-voltage comparator to the logic unit.
4. the multichannel ratio of extreme values according to claim 3 based on high-speed comparator array compared with positioning circuit, its feature exists
In the 3rd comparing unit includes peak comparator and minimum comparator, and the peak comparator is by described in two
The voltage signal of high voltage comparator output is compared, and output HIGH voltage signal is to the logic unit, meanwhile, it is described most
The logical signal output end output logic signal of high level comparator is to the logic unit；The minimum comparator is by two institutes
The voltage signal for stating low-voltage comparator output is compared, and exports low voltage signal to the logic unit, meanwhile, it is described
The logical signal output end output logic signal of minimum comparator is to the logic unit.
5. the multichannel ratio of extreme values according to claim 4 based on high-speed comparator array compared with positioning circuit, its feature exists
In, the high voltage signal is compared by the logic unit with the first reference voltage, generates the first reference signal, and by institute
State the first reference signal and the logical signal carries out logical process, output overvoltage positioning signal；The logic unit will be described
Low voltage signal is compared with the second reference voltage, generates the second reference signal, and by second reference signal and described
Logical signal carries out logical process, exports under-voltage positioning signal.
6. a kind of chip, it is characterised in that including the multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit, it is described
Multichannel ratio of extreme values based on high-speed comparator array includes the multiple comparing units being sequentially connected and logic compared with positioning circuit
Unit, wherein, the multiple comparing unit at least includes three, respectively the first comparing unit, the second comparing unit, the 3rd ratio
Compared with unit；
First comparing unit inputs plurality of voltages signal, and the plurality of voltages signal of input is carried out into voltage levels comparison
Afterwards, second comparing unit is outputed voltage signal to, and output logic signal is to the logic unit；
After the voltage signal of input is carried out voltage levels relatively by second comparing unit, the described 3rd is outputed voltage signal to
Comparing unit, and output logic signal is to the logic unit；
After the voltage signal of input is carried out voltage levels relatively by the 3rd comparing unit, output HIGH voltage signal and low-voltage
Signal is to the logic unit, and output logic signal is to the logic unit；
The logic unit carries out logical process, output overvoltage to the logical signal, high voltage signal and low voltage signal of input
Positioning signal and under-voltage positioning signal.
7. chip according to claim 6, it is characterised in that first comparing unit compares including four identicals first
Compared with device, the two-way voltage signal of input is compared by each first comparator, and by the high voltage all the way of wherein voltage
Signal is exported to second comparing unit from high-voltage output end, and the low voltage signal all the way of voltage is exported from low-voltage output
To second comparing unit, meanwhile, the logical signal output end output logic signal of the first comparator to the logic
Unit.
8. chip according to claim 7, it is characterised in that second comparing unit includes two identical high voltages
Comparator and two identical low-voltage comparators, the high voltage comparator are defeated from the high pressure of the first comparator by two-way
The voltage signal for going out end output is compared, and the high voltage signal all the way of wherein voltage is exported into single to the described 3rd comparison
Member, meanwhile, the logical signal output end output logic signal of the high voltage comparator to the logic unit；The low-voltage
The voltage signal that two-way is exported from the low-voltage output of the first comparator is compared by comparator, and will wherein voltage it is low
Voltage signal all the way export to the 3rd comparing unit, meanwhile, the logical signal output end of the low-voltage comparator is defeated
Go out logical signal to the logic unit.
9. chip according to claim 8, it is characterised in that the 3rd comparing unit is including peak comparator and most
The voltage signal that two high voltage comparators are exported is compared by low value comparator, the peak comparator, and defeated
Go out high voltage signal to the logic unit, meanwhile, the logical signal output end output logic signal of the peak comparator
To the logic unit；The voltage signal of two low-voltage comparator outputs is compared by the minimum comparator,
And low voltage signal is exported to the logic unit, meanwhile, the logical signal output end output logic of the minimum comparator
Signal is to the logic unit.
10. chip according to claim 9, it is characterised in that the logic unit is by the high voltage signal and first
Reference voltage is compared, and generates the first reference signal, and first reference signal and the logical signal are carried out into logic
Processing, output overvoltage positioning signal；The low voltage signal is compared by the logic unit with the second reference voltage, generation
Second reference signal, and second reference signal and the logical signal are subjected to logical process, export under-voltage positioning signal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064774A (en) * | 2017-04-17 | 2017-08-18 | 成都卓创科微电子有限公司 | Multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit, chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064774A (en) * | 2017-04-17 | 2017-08-18 | 成都卓创科微电子有限公司 | Multichannel ratio of extreme values based on high-speed comparator array compared with positioning circuit, chip |
| CN107064774B (en) * | 2017-04-17 | 2023-06-27 | 江阴元灵芯旷微电子技术有限公司 | Multipath extremum comparison and positioning circuit and chip based on high-speed comparator array |
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