CN109212306A - Adjusting method, circuit and the device of chip power-consumption - Google Patents
Adjusting method, circuit and the device of chip power-consumption Download PDFInfo
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- CN109212306A CN109212306A CN201710545501.1A CN201710545501A CN109212306A CN 109212306 A CN109212306 A CN 109212306A CN 201710545501 A CN201710545501 A CN 201710545501A CN 109212306 A CN109212306 A CN 109212306A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
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Abstract
The embodiment of the present invention provides the adjusting method, circuit and device of a kind of chip power-consumption.This method comprises: monitoring the substrate current of each functional module in the chip, wherein the chip includes at least one functional module；According to the substrate current of each functional module, determine the corresponding regulating power consumption method of each functional module, the regulating power consumption method for reducing the chip power consumption.That is technical solution of the present invention, using the functional module of chip as research object, during a functional module is adjusted, the working condition of other function module is unaffected, to improve the specific aim and accuracy of chip power-consumption adjusting.
Description
Technical field
The present embodiments relate to chip design art more particularly to a kind of adjusting methods of chip power-consumption, circuit and dress
It sets.
Background technique
Need to consider the operating temperature of chip under the high temperature conditions in the design process of chip, therefore, in hot conditions
Under chip can use some new materials, such as GaAs (GaAs), boronation gallium (GaP), silicon carbide (SiC) even vacuum tube
Technology etc..But based on the considerations of cost, chip design resistant to high temperatures is carried out usually using conventional bulk silicon (Bulk) technique.But
Under high temperature environment, the reliability that the variation of conventional bulk silicon (Bulk) technique electrical parameter will lead to chip reduces.
Currently, reducing chip by reducing the power consumption of chip to improve chip reliability in a high temperauture environment
Operating temperature.Specifically, using the temperature of temperature sensor real-time monitoring chip, when the temperature of chip is more than preset threshold,
The operating voltage of chip is turned down, then, continues the temperature for monitoring chip, when the temperature of chip still exceeds preset threshold, after
The continuous operating voltage for turning down chip.It follows that the prior art is the temperature according to chip, the operating voltage of chip is gradually decreased
To reduce the power consumption of chip.
It can be seen from the above, the prior art is using entire chip as research object, adjustment process is slow, low efficiency, and has
Certain blindness.
Summary of the invention
The embodiment of the present invention provides the adjusting method, circuit and device of a kind of chip power-consumption, for solve the prior art with
Entire chip is research object, and adjustment process is slow, low efficiency, and has the problem of certain blindness.
In a first aspect, the embodiment of the present invention provides a kind of adjusting method of chip power-consumption, comprising:
Monitor the substrate current of each functional module in the chip, wherein the chip includes at least one functional module；
According to the substrate current of each functional module, the corresponding regulating power consumption method of each functional module, the function are determined
Adjusting method is consumed for reducing the power consumption of the chip.
In a kind of possible implementation of first aspect, the substrate current according to each functional module is determined
The corresponding regulating power consumption method of each functional module, specifically includes:
For a wherein functional module, the substrate current of the functional module is compared with the first preset threshold；
When the substrate current of the functional module is greater than or equal to the first preset threshold, the electricity of the functional module is disconnected
Source.
In the alternatively possible implementation of first aspect, the power supply electricity of each functional module in the chip is monitored
Stream；
The substrate current according to each functional module determines the corresponding regulating power consumption method of each functional module, tool
Body includes:
For a wherein functional module, the substrate current of the functional module is compared with the first preset threshold；
When the functional module substrate current be less than first preset threshold, judge the functional module power supply electricity
Whether stream is greater than or equal to the second preset threshold；
If so, judging whether the ratio of the substrate current and the source current of the functional module of the functional module is big
In or equal to third predetermined threshold value；
If so, disconnecting the power supply of the functional module.
In the alternatively possible implementation of first aspect, the substrate current according to each functional module, really
Determine the corresponding regulating power consumption method of each functional module, specifically include:
For a wherein functional module, when the substrate current of the functional module is less than the first preset threshold, the function
The source current of module is greater than the second preset threshold, and the substrate current of the functional module and the power supply of functional module electricity
When the ratio of stream is less than third predetermined threshold value, the running frequency of the functional module is reduced.
In the alternatively possible implementation of first aspect, the substrate current according to each functional module, really
Determine the corresponding regulating power consumption method of each functional module, specifically include:
For a wherein functional module, when the substrate current of the functional module is less than the first preset threshold, the function
The source current of module is greater than the second preset threshold, and the substrate current of the functional module and the power supply of functional module electricity
When the ratio of stream is less than third predetermined threshold value, the running frequency of the functional module and the voltage of the functional module are reduced.
Second aspect, the embodiment of the present invention provide a kind of regulating device of chip power-consumption, comprising:
Monitoring modular, for monitoring the substrate current of each functional module in the chip, wherein the chip includes at least
One functional module；
Processing module determines the corresponding power consumption tune of each functional module for the substrate current according to each functional module
Section method, the regulating power consumption method for reducing the chip power consumption.
In a kind of possible implementation of second aspect, the processing module includes comparing unit and power switch list
Member；
The comparing unit, it is for being directed to a wherein functional module, the substrate current of the functional module and first is pre-
If threshold value is compared；
The power switch unit determines that the substrate current of the functional module is greater than or waits for working as the comparing unit
When the first preset threshold, the power supply of the functional module is disconnected.
In the alternatively possible implementation of second aspect, the processing module further includes judging unit；
The monitoring modular is also used to monitor the source current of each functional module in the chip；
The comparing unit is also used to for a wherein functional module, by the substrate current of the functional module and first
Preset threshold is compared；
The judging unit, for determining that the substrate current of the functional module is less than described first when the comparing unit
Preset threshold, judges whether the source current of the functional module is greater than or equal to the second preset threshold；If so, described in judgement
Whether the ratio of the substrate current of functional module and the source current of the functional module is greater than or equal to third predetermined threshold value；
The power switch unit, be also used to when the judging unit determine the substrate current of the functional module with it is described
When the ratio of the source current of functional module is greater than or equal to third predetermined threshold value, the power supply of the functional module is disconnected.
In the alternatively possible implementation of second aspect, the processing module further include:
Frequency adjusts unit, for being directed to a wherein functional module, when the judging unit determines the functional module
Substrate current is greater than the second preset threshold, and the function mould less than the source current of the first preset threshold, the functional module
When the ratio of the substrate current of block and the source current of the functional module is less than third predetermined threshold value, the functional module is reduced
Running frequency；And/or
Frequency pressure adjusts unit, for being directed to a wherein functional module, when the judging unit determines the functional module
Substrate current is greater than the second preset threshold, and the function mould less than the source current of the first preset threshold, the functional module
When the ratio of the substrate current of block and the source current of the functional module is less than third predetermined threshold value, the functional module is reduced
Running frequency and the functional module voltage.
The third aspect, the embodiment of the present invention provide a kind of adjusting circuit of chip power-consumption, and the chip includes at least one
Functional module, the circuit include voltage modulated module and at least one power switch, and the functional module is opened with the power supply
Pass connects one to one, and the voltage modulated module connects with the power supply of the power switch of each functional module and the chip respectively
It connects；
The voltage modulated module, for monitoring the substrate current of each functional module, according to the substrate of each functional module
Electric current, determines the corresponding regulating power consumption method of each functional module, the regulating power consumption method for reducing the chip function
Consumption.
In a kind of possible implementation of the third aspect, the voltage modulated module is specifically used for for wherein one
The substrate current of the functional module is compared by functional module with the first preset threshold；When the substrate of the functional module
When electric current is greater than or equal to the first preset threshold, the power switch of the functional module is disconnected.
In the alternatively possible implementation of the third aspect, the voltage modulated module is also used to monitor the core
The source current of each functional module in piece；
The voltage regulator module, also particularly useful for a wherein functional module is directed to, by the substrate electricity of the functional module
Stream is compared with the first preset threshold；When the functional module substrate current be less than first preset threshold, judge institute
Whether the source current for stating functional module is greater than or equal to the second preset threshold；If so, judging the substrate of the functional module
Whether the ratio of electric current and the source current of the functional module is greater than or equal to third predetermined threshold value；If so, described in disconnecting
The power switch of functional module.
In the alternatively possible implementation of the third aspect, the circuit further includes connecting with each functional module
Frequency modulation(PFM) module；
The frequency modulation(PFM) module, for monitoring the substrate current and source current of each functional module；
The frequency modulation(PFM) module, also particularly useful for a wherein functional module is directed to, when the substrate electricity of the functional module
The source current flowed less than the first preset threshold, the functional module is greater than the second preset threshold, and the lining of the functional module
When the ratio of bottom electric current and the source current of the functional module is less than third predetermined threshold value, the operation of the functional module is reduced
Frequency.
In the alternatively possible implementation of the third aspect, the circuit further includes connecting with each functional module
Frequency modulation(PFM) module；
The frequency modulation(PFM) module, for monitoring the substrate current and source current of each functional module；
For a wherein functional module, when the substrate current of the functional module is less than the first preset threshold, the function
The source current of module is greater than the second preset threshold, and the substrate current of the functional module and the power supply of functional module electricity
When the ratio of stream is less than third predetermined threshold value, running frequency of the frequency modulation(PFM) module for reducing the functional module, institute
Voltage modulated module is stated for reducing the voltage of the functional module.
Adjusting method, circuit and the device of chip power-consumption provided in an embodiment of the present invention, it is each in the chip by monitoring
The substrate current of functional module, and according to the substrate current of each functional module, determine the corresponding power consumption tune of each functional module
Section method, and the power consumption for reducing chip using the regulating power consumption method.That is the method for the present embodiment, to a functional module
During being adjusted, the working condition of other function module is unaffected, to improve being directed to for chip power-consumption adjusting
Property and accuracy.Meanwhile the present embodiment based on the substrate current of functional module come the power consumption of regulatory function module, may be implemented pair
The quick adjusting of chip power-consumption, further improves the reliability of chip.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow diagram of the adjusting method for the chip power-consumption that the embodiment of the present invention one provides；
Fig. 2 is the flow diagram of the adjusting method of chip power-consumption provided by Embodiment 2 of the present invention；
Fig. 3 is the flow diagram of the adjusting method for the chip power-consumption that the embodiment of the present invention three provides；
Fig. 4 is the flow diagram of the adjusting method of chip power-consumption provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the adjusting circuit for the chip power-consumption that the embodiment of the present invention one provides；
Fig. 6 is the structural schematic diagram of voltage modulated module provided by the invention；
Fig. 7 is each functional module and voltage modulated module and frequency in the adjusting circuit for the chip power-consumption that the present embodiment one provides
The connection schematic diagram of rate modulation module；
Fig. 8 is the structural schematic diagram of the adjusting circuit of chip power-consumption provided by Embodiment 2 of the present invention；
Fig. 9 is the structural schematic diagram of frequency modulation(PFM) module provided by Embodiment 2 of the present invention；
Figure 10 is the structural schematic diagram of the regulating device for the chip power-consumption that the embodiment of the present invention one provides；
Figure 11 is the structural schematic diagram of the regulating device of chip power-consumption provided by Embodiment 2 of the present invention；
Figure 12 is the structural schematic diagram of the regulating device for the chip power-consumption that the embodiment of the present invention three provides；
Figure 13 is the structural schematic diagram of the regulating device for the chip power-consumption that the embodiment of the present invention three provides；
Figure 14 is the structural schematic diagram of the regulating device for the chip power-consumption that the embodiment of the present invention four provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The adjusting method of chip power-consumption provided by the invention reduces the temperature of chip by reducing the power consumption of chip, into
And improve chip functional reliability in a high temperauture environment.
The method of the present embodiment is suitable for any kind of chip, by carrying out function division to chip, is divided into multiple
Functional module, using each functional module as research object.Then, the substrate current of monitoring function module, and according to substrate current
Size carry out the power consumption of regulatory function module, and then improve chip power-consumption adjusting specific aim and accuracy, to ensure that
The functional reliability of chip.
Technical solution of the present invention is described in detail with specifically embodiment below.These specific implementations below
Example can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 1 is the flow diagram of the adjusting method for the chip power-consumption that the embodiment of the present invention one provides.The present embodiment is held
Row main body can be with the adjusting circuit (hereinafter referred to as adjusting circuit) for adjusting chip power-consumption function or have adjusting chip function
The regulating power consumption device of wasted work energy, the present embodiment are illustrated for adjusting circuit, regulating power consumption device and adjusting circuit
Adjusting method it is identical.The present embodiment adjusts chip power-consumption according to the substrate current of functional module what is involved is circuit is adjusted
Detailed process.As shown in Figure 1, the method for the present embodiment may include:
The substrate current of each functional module in S101, the monitoring chip, wherein the chip includes at least one function
Module.
S102, according to the substrate current of each functional module, determine the corresponding regulating power consumption method of each functional module, institute
Regulating power consumption method is stated for reducing the power consumption of the chip.
It needs to pay close attention to following factor in chip design process:
First, as temperature increases, the mobility of electrons declines.For example, 200 DEG C are increased to from 25 DEG C, carrier
Mobility reduces nearly half.
Second, as temperature increases, MOSFET (Metal-Oxide-Semiconductor Field-Effect
Transistor, metal-oxide half field effect transistor) voltage threshold reduction.For example, 200 DEG C are increased to from 25 DEG C, PMOS/NMOS voltage
Threshold value is reduced also close to half.
Third, as temperature increases, the junction leakage of body silicon be increased dramatically.For example, 200 DEG C are increased to from 25 DEG C, electric leakage electricity
Stream increases about 3 to 4 orders of magnitude.
4th, as temperature increases, silicon substrate electric current increases, it is easier to cause latch (Latch-up) effect.
5th, as temperature increases, electromigration (Electro-migration) phenomenon of conducting wire is even more serious, influences core
The working life of piece.
In factors above, junction leakage is the greatest problem that high temperature resistant circuit design faces under bulk silicon technological.Junction leakage
It is made of subthreshold current and PN junction electric current two parts, the former appears in FET (Field Effect Transistor, field-effect
Transistor) between source and drain end, it is closely related with temperature.The latter appears on the PN junction of reverse bias, when temperature is higher than 150 DEG C
For the main source of electric leakage.Leakage current crosses senior general to the next a series of availability of chip belt and integrity problem under high temperature, such as fastens with a bolt or latch
Lock, electromigration, voltage drop etc..
In order to solve the above-mentioned technical problem, chip is divided by the present embodiment first according to the function of module each in chip
At least one functional module.Using functional module as research object, the substrate current of each functional module of real-time monitoring.
Then, it adjusts circuit and determines the corresponding regulating power consumption of each functional module based on the substrate current of each functional module
Method, and reduce using regulating power consumption method the power consumption of chip.Wherein, substrate current is hot under channel laterally electric field action
Electronics from source region be transferred to drain region during caused by ionization by collision.
The substrate current of functional module and the latch up problem of chip are closely related, i.e., when substrate current increases, say
Latch up problem has occurred in circuit in bright chip, and latch up problem can cause circuit seriously to damage, or even burn out
Chip.
In the present embodiment, it adjusts circuit and determines that the corresponding regulating power consumption method of each functional module can according to substrate current
It to be, adjusts circuit and is compared the substrate current of functional module with a certain preset value, such as when substrate current is pre- greater than this
If, can be by disconnecting the power supply (such as the power ground for disconnecting the functional module) of the functional module, so that the function mould when value
Block stops working, and then reduces the power consumption of chip.Optionally, when substrate current is greater than the preset value, reduction can also be passed through
The working frequency of functional module, or the operating voltage of functional module is reduced to reduce the power consumption of the functional module, and then is realized
The reduction of chip power-consumption.Optionally, core can also be reduced by reducing working frequency and the operating voltage of functional module simultaneously
The power consumption of piece.Optionally, the regulating power consumption method of the present embodiment can also be other methods that can reduce chip power-consumption, this
Embodiment is without limitation.
The prior art, when the temperature of chip increases, does not consider that chip temperature is raised using entire chip as research object
Main cause does not consider it is to cause chip temperature excessively high because the power consumption of those of chip module is too big, but pass through reduction
The operating temperature of entire chip, or even the power supply of chip is disconnected, to reduce the power consumption and temperature of chip.It will cause power consumption so not
Big functional module reduces the functional reliability of chip since brownout or power-off are not available, and has blindness.
Meanwhile prior art adjusting method based on temperature, wherein the raising of chip temperature needs a period of time, to be monitored
Voltage is adjusted again after increasing to temperature, and chip may have been damaged and can not work normally at this time, therefore its adjustment process is slow, be adjusted
Save low efficiency.
The adjusting method of the embodiment of the present invention, using each functional module of chip as research object, to a functional module
During being adjusted, the working condition of other function module is unaffected, and then realizes the fine-grained adjusting in subregion,
Improve the specific aim and accuracy of chip power-consumption adjusting.Meanwhile the present embodiment based on the electric current of functional module come regulatory function
The power consumption of module may be implemented the quick adjusting to chip power-consumption, further improve the reliability of chip.
The adjusting method of chip power-consumption provided in an embodiment of the present invention, by the lining for monitoring each functional module in the chip
Bottom electric current, and according to the substrate current of each functional module, determine the corresponding regulating power consumption method of each functional module, and use
The regulating power consumption method is come the power consumption that reduces chip.That is the method for the present embodiment, in the mistake that a functional module is adjusted
The working condition of Cheng Zhong, other function module are unaffected, to improve the specific aim and accuracy of chip power-consumption adjusting.Together
When, the present embodiment, come the power consumption of regulatory function module, may be implemented to the fast of chip power-consumption based on the substrate current of functional module
Velocity modulation section further improves the reliability of chip.
Fig. 2 is the flow diagram of the adjusting method of chip power-consumption provided by Embodiment 2 of the present invention.In above-described embodiment
On the basis of, the present embodiment determines each functional module pair what is involved is circuit is adjusted according to the substrate current of each functional module
The detailed process for the regulating power consumption method answered, as shown in Fig. 2, above-mentioned S102 can specifically include:
S201, it is directed to a wherein functional module, the substrate current of the functional module and the first preset threshold is compared
Compared with.
S202, when the substrate current of the functional module be greater than or equal to the first preset threshold when, disconnect the function mould
The power supply of block.
Specifically, the power consumption of chip includes quiescent dissipation and dynamic power consumption, usually using DVFS (Dynamic voltage
And frequency scaling, dynamic voltage frequency adjustment) technology adjusts the dynamic power consumption of chip.Specifically according to core
For the application program that piece is run to the different needs of computing capability, the running frequency and/or voltage of dynamic regulation chip reach drop
The purpose of low chip power-consumption and temperature.This is because frequency is higher for same chip, required voltage is also higher, power consumption
It is bigger.And the method for commonly reducing chip quiescent dissipation is power gating technology, particular by some circuit modules of closing
Power supply come achieve the purpose that reduce power consumption.Wherein, power gating technology can not only reduce dynamic power consumption, additionally it is possible to reduce electric leakage
Power consumption.
By taking functional module A as an example, in the present embodiment, the substrate current Isub that circuit first determines whether functional module A is adjusted
Whether less than the first preset threshold β (first preset threshold β can be designer weigh chip operative scenario and technique it is true
Fixed, it is also possible to empirical value).When the substrate current Isub of functional module A is greater than or equal to the first preset threshold β, explanation
The substrate current Isub of functional module A is excessive at this time, no matter chip power consumption and temperature it is whether normal, adjust circuit can break at once
The power supply of functional module A is opened, to prevent latch-up problem from causing chip permanent damage.
It should be noted that in the present embodiment, the corresponding first preset threshold β of each functional module can be identical, can also
It with difference, is set with specific reference to actual conditions, the present embodiment is without limitation.
In the present embodiment by taking a functional module A as an example, it is specifically described the substrate electricity for adjusting circuit according to functional module A
Stream Isub and source current Itot determines the process of its regulating power consumption method, the process of the regulating power consumption method of other function module
Identical as functional module A, referring to the adjustment process of above-mentioned functional module A, details are not described herein.
The adjusting method of the embodiment of the present invention, first determines whether the substrate current of functional module is greater than the first default threshold
Value, if so, needing the power supply to closing function module, to prevent latch-up problem from causing chip permanent damage, in turn
Improve the working life of chip.
Fig. 3 is the flow diagram of the adjusting method for the chip power-consumption that the embodiment of the present invention three provides.In above-described embodiment
On the basis of, the present embodiment determines each functional module pair what is involved is circuit is adjusted according to the substrate current of each functional module
The detailed process for the regulating power consumption method answered, as shown in figure 3, above-mentioned S102 can specifically include:
The source current of each functional module in S301, the monitoring chip.
The substrate current of the adjusting circuit of the present embodiment not only real time monitoring function module, but also need real-time monitoring function
The source current of energy module, to improve and comprehensive monitoring accurate to functional module.Circuit can be allow to adjust in this way based on every
The substrate current and source current of a functional module accurately determine the corresponding regulating power consumption method of each functional module, Jin Ershi
Now to accurate, the quick adjusting of chip power-consumption.
Based on described above, above-mentioned S102 be can specifically include:
S302, it is directed to a wherein functional module, the substrate current of the functional module and the first preset threshold is compared
Compared with.
Specifically, adjusting the substrate current and source current of each functional module in circuit real-time monitoring chip, and by each function
The substrate current and source current of energy module are compared with corresponding preset value, are closed according to the size of substrate current and preset value
The size relation of system and source current and preset value determines the method for adjusting chip power-consumption.
S303, when the functional module substrate current be less than first preset threshold, judge the functional module
Whether source current is greater than or equal to the second preset threshold.
Referring to above-mentioned example, by taking functional module A as an example, in the present embodiment, adjusts circuit and first determine whether functional module A's
Whether substrate current Isub is less than the first preset threshold β.When the substrate current Isub of functional module A is less than the first preset threshold β
When, illustrate that the substrate current Isub of functional module at this time is normal.Then, the source current of circuit monitoring functional module A is adjusted
Whether the source current Itot of Itot, i.e. adjusting circuit judges functional module A are greater than the second preset threshold α (second default threshold
Value α can be designer weigh chip operative scenario and technique determine, be also possible to empirical value).When functional module A's
When source current Itot is greater than the second preset threshold α, illustrate that power ground network electric current is excessively high at this time, this can not be determined by adjusting circuit
When chip be that quiescent dissipation is big or dynamic power consumption is big, need further to judge.
S304, if so, judging the ratio of the substrate current of the functional module and the source current of the functional module
Whether third predetermined threshold value is greater than or equal to.
S305, if so, disconnecting the power supply of the functional module.
Specifically, in the substrate current Isub for determining functional module A less than the first preset threshold β, and the electricity of functional module A
When ource electric current Itot is greater than the second preset threshold α, the substrate current Isub and source current of circuit counting functional module A are adjusted
The ratio I sub/Itot of Itot, and judge whether ratio I sub/Itot is greater than or equal to third predetermined threshold value K.When function mould
When the ratio I sub/Itot of the substrate current Isub and source current Itot of block A are greater than or equal to third predetermined threshold value K, explanation
The contribution of substrate current Isub is larger in the power consumption of functional module A at this time, i.e. it is main former that the quiescent dissipation of functional module A, which increases,
Cause can use power gating technology at this time to reduce the power consumption of functional module A, the specifically power supply (example of break function modules A
Such as the power ground of break function modules A), so that functional module A is stopped working, quickly to reduce the power consumption of functional module A, and then drops
The power consumption and temperature of low chip.
It should be noted that in the present embodiment, the corresponding first preset threshold β of each functional module, the second preset threshold α
It may be the same or different with third predetermined threshold value K, set with specific reference to actual conditions, the present embodiment is without limitation.
Optionally, the first preset threshold of preset threshold β < second α.
In the present embodiment by taking a functional module A as an example, it is specifically described the substrate electricity for adjusting circuit according to functional module A
Stream Isub and source current Itot determines the regulating power consumption method of functional module, the regulating power consumption method and function of other function module
Can modules A it is identical, referring to the adjustment process of above-mentioned functional module A, details are not described herein.
In second of possible implementation of the embodiment of the present invention, on the basis of the above embodiments, above-mentioned S102 is also
It can specifically include:
For a wherein functional module, when the substrate current of the functional module is less than the first preset threshold, the function
The source current of module is greater than the second preset threshold, and the substrate current of the functional module and the power supply of functional module electricity
When the ratio of stream is less than third predetermined threshold value, the running frequency of the functional module is reduced.
Referring to the first possible implementation of above-described embodiment, in the present embodiment, circuit is adjusted by functional module A's
Substrate current Isub is compared with the first preset threshold β, by the source current Itot of functional module A and the second preset threshold α
It is compared.When the substrate current Isub of functional module A is less than the first preset threshold β, and the source current Itot of functional module A
When greater than the second preset threshold α, the ratio of the substrate current Isub and source current Itot of circuit counting functional module A are adjusted
Isub/Itot, and ratio I sub/Itot is compared with third predetermined threshold value K.When the substrate current of functional module A
When the ratio I sub/Itot of Isub and source current Itot is less than third predetermined threshold value K, illustrate the power consumption of functional module A at this time
The contribution of middle source current Itot is larger, i.e. it is main cause that the dynamic power consumption of functional module A, which increases, can use DVFS at this time
Technology reduces the power consumption of functional module A, reduces the running frequency of functional module A, specifically to reduce the function of functional module A
Consumption.
For example, adjusting circuit is that functional module A exports a clock signal, such as in low level, the pass functional module A is short,
It stops working, in high level, functional module A starting, and then the working frequency by reducing functional module A is realized to reduce
The power consumption of functional module A.
In the third possible implementation of the embodiment of the present invention, on the basis of the above embodiments, above-mentioned S102 is also
It can specifically include:
For a wherein functional module, when the substrate current of the functional module is less than the first preset threshold, the function
The source current of module is greater than the second preset threshold, and the substrate current of the functional module and the power supply of functional module electricity
When the ratio of stream is less than third predetermined threshold value, the running frequency of the functional module and the voltage of the functional module are reduced.
Referring to above-mentioned second of implementation, determine the substrate current Isub of functional module A less than first when adjusting circuit
Preset threshold β, functional module A source current Itot be greater than the second preset threshold α, and the substrate current Isub of functional module A
When being less than third predetermined threshold value K with the ratio I sub/Itot of source current Itot, the running frequency of functional module A is being reduced
At the same time it can also reduce the voltage of functional module A, and then the adjustment speed of functional module A power consumption is improved, further improved
The functional reliability of chip.
In conclusion above-mentioned technical proposal can (Fig. 4 be the chip power-consumption that the embodiment of the present invention three provides by Fig. 4
The flow diagram of adjusting method) simply indicate, specifically: S401 is first carried out: the substrate current Isub of arbitration functions modules A
Whether the first preset threshold β is greater than, if so, S402: the power supply of break function modules A is executed, if it is not, then executing S403: sentencing
Whether the source current Itot of disconnected functional module A is greater than the second preset threshold α.During executing S403, however, it is determined that function
When the source current Itot of modules A is greater than the second preset threshold α, then S404 is executed: the substrate current Isub of arbitration functions modules A
Whether it is greater than or equal to third predetermined threshold value K with the ratio I sub/Itot of source current Itot.If it is determined that the lining of functional module A
The ratio I sub/Itot of bottom electric current Isub and source current Itot is greater than or equal to third predetermined threshold value K, then executes S402, if
Otherwise the running frequency and/or operating voltage of functional module A S405: are reduced.
The adjusting method of the embodiment of the present invention analyzes the source of functional module power consumption, adopts for different situations
The power consumption of functional module is reduced with different adjusting methods, and then effectively reduces the power consumption and temperature of chip, improves core
The functional reliability of piece.
Fig. 5 is the structural schematic diagram of the adjusting circuit for the chip power-consumption that the embodiment of the present invention one provides.Fig. 6 mentions for the present invention
The structural schematic diagram of the voltage modulated module of confession.As shown in Figure 5 and Figure 6, the chip 100 includes at least one functional module
40, the circuit includes voltage modulated module 10 and at least one power switch 30, and the functional module 40 is opened with the power supply
Close and 30 connect one to one, the voltage modulated module 10 respectively with the power switch 30 and the chip of each functional module 40
100 power supply 20 connects.
The voltage modulated module 10, for monitoring the substrate current of each functional module 40, according to each functional module 40
Substrate current, determine the corresponding regulating power consumption method of each functional module 40, the regulating power consumption method is for reducing described
The power consumption of chip 100.
It in the present embodiment, can be each function mould as shown in figure 5, chip 100 is divided into multiple functional modules 40
A voltage modulated module 10 is arranged in block 40, realizes one-to-one control.Optionally, (Fig. 7 is the present embodiment one as shown in Figure 7
The connection signal for adjusting each functional module and voltage modulated module and frequency modulation(PFM) module in circuit of the chip power-consumption of offer
Figure), or a voltage modulated module 10 is arranged in multiple functional modules 40, allows 10 monitoring and regulation of voltage modulated module
Multiple functional modules 40.
In the present embodiment, each functional module 40 is provided with a power switch 30, one end of voltage modulated module 10
It is connect with the power supply 20 (i.e. VDD) of chip 100, the other end of voltage modulated module 10 passes through power switch 30 and functional module 40
Connection.Voltage modulated module 10 is used for the substrate current Isub1, Isub2 ... ..., Isubn of each functional module 40 of real-time monitoring,
And according to the substrate current come the power consumption of regulatory function module 40, to realize the adjusting to chip power-consumption.Detailed process is referring to upper
The description of embodiment of the method is stated, details are not described herein.
The adjusting circuit of the present embodiment can be used for executing the technical solution of above-mentioned shown embodiment of the method, realize former
Reason is similar with technical effect, and details are not described herein again.
In a kind of possible implementation of the embodiment of the present invention, above-mentioned voltage modulated module 10, specifically for being directed to
The substrate current of the functional module 40 is compared by a wherein functional module 40 with the first preset threshold；When the function
When the substrate current of module 40 is greater than or equal to the first preset threshold, the power switch 30 of the functional module 40 is disconnected.
In the alternatively possible implementation of the present embodiment, above-mentioned voltage modulated module 10 is also used to voltage modulated
Module 40 is also used to monitor the source current of each functional module 40 in the chip 100.
The voltage regulator module 10, also particularly useful for a wherein functional module 40 is directed to, by the functional module 40
Substrate current is compared with the first preset threshold；When the substrate current of the functional module 40 is less than the described first default threshold
Value, judges whether the source current of the functional module 40 is greater than or equal to the second preset threshold；If so, judging the function
Whether the ratio of the substrate current of module 40 and the source current of the functional module 40 is greater than or equal to third predetermined threshold value；If
It is the power switch 30 for then disconnecting the functional module 40.
The source current Itot1 of the voltage modulated module 10 of the present embodiment also each functional module 40 of real-time monitoring,
Itot2 ... ..., Itotn, and according to the substrate current Isub and source current Itot of functional module 40 come regulatory function module 40
Power consumption, to realize adjusting to 100 power consumption of chip, detailed process referring to above method embodiment description, it is no longer superfluous herein
It states.
Referring to Fig. 5, the input signal of voltage modulated module 10 is substrate current Isub and source current Itot, is exported as VS
And Sw.When signal VS is effective, then voltage modulated module 10 reduces the voltage of functional module 40, when signal Sw is effective, voltage
The power switch 30 of 10 break function module 40 of modulation module.
The present embodiment is specifically, as the substrate current Isub of functional module 40<β,supply current Itot>α, and Isub/
The power-down signal Sw of Itot >=K, voltage modulated module 10 are effective, and the power ground of corresponding function module 40 disconnects.
The adjusting circuit of the present embodiment can be used for executing the technical solution of above-mentioned shown embodiment of the method, realize former
Reason is similar with technical effect, and details are not described herein again.
Fig. 8 is the structural schematic diagram of the adjusting circuit of chip power-consumption provided by Embodiment 2 of the present invention, and Fig. 9 mentions for the present invention
The structural schematic diagram of the frequency modulation(PFM) module of confession.On the basis of the above embodiments, such as the adjusting electricity of Fig. 8 and Fig. 9 the present embodiment
Road further includes the frequency modulation(PFM) module 50 connecting with functional module 40 each in chip 100,
The frequency modulation(PFM) module 50, for monitoring the substrate current and source current of each functional module 40.
The frequency modulation(PFM) module 50, also particularly useful for a wherein functional module 40 is directed to, when the functional module 40
Substrate current is greater than the second preset threshold, and the function less than the source current of the first preset threshold, the functional module 40
When the ratio of the substrate current of module 40 and the source current of the functional module 40 is less than third predetermined threshold value, the function is reduced
The running frequency of energy module 40.
In the present embodiment, a frequency modulation(PFM) module 50 can be set for each functional module 40, realizes one-to-one
Control.Optionally, as shown in Figure 7, or a frequency modulation(PFM) module 50 is arranged in multiple functional modules 40, allows the frequency tune
The multiple functional modules 40 of 50 monitoring and regulation of molding block.
Referring to Fig. 9, the input signal of frequency modulation(PFM) module is substrate current Isub and source current Itot, is exported as FS.
When signal FS is effective, then frequency modulation(PFM) module 50 reduces the running frequency of functional module 40.
Specifically, as shown in Figure 8 and Figure 9, by taking a functional module as an example, the frequency modulation(PFM) module 50 of the present embodiment with should
Functional module 40 connects, substrate current Isub1, Isub2 ... ..., Isubn and power supply for each functional module 40 of real-time monitoring
Electric current Itot1, Itot2 ... ..., Itotn.Work as Isub<β,Itot>when α, and beta/alpha When<K, the FS of frequency modulation(PFM) module 50 has
Effect, the running frequency of corresponding function module 40 are responded and are reduced, and modulated output clock is CLK_OUT.
In a kind of possible implementation of the present embodiment, the circuit further includes connecting with each functional module 40
Frequency modulation(PFM) module 50；
The frequency modulation(PFM) module 50, for monitoring the substrate current and source current of each functional module 40；
For a wherein functional module 40, when the substrate current of the functional module 40 is less than the first preset threshold, described
The source current of functional module 40 is greater than the second preset threshold, and the substrate current of the functional module 40 and the functional module
When the ratio of 40 source current is less than third predetermined threshold value, the frequency modulation(PFM) module 50 is for reducing the functional module 40
Running frequency, the voltage modulated module 10 for reducing the functional module 40 voltage.
Specifically, as shown in Figure 8 and Figure 9, when frequency modulation(PFM) module 50 and voltage modulated module 10 monitor Isub < β,
When Itot>α, and when beta/alpha<K, the FS of frequency modulation(PFM) module 50 is effective, and the VS of voltage modulated module 10 is effective, corresponding function mould
The running frequency and operating voltage of block 40 are reduced by response, and modulated output clock and voltage are CLK_OUT and VS.
The adjusting circuit of the present embodiment can be used for executing the technical solution of above-mentioned shown embodiment of the method, realize former
Reason is similar with technical effect, and details are not described herein again.
Figure 10 is the structural schematic diagram of the regulating device for the chip power-consumption that the embodiment of the present invention one provides.As shown in Figure 10,
The regulating device 200 of the chip power-consumption of the present embodiment may include:
Monitoring modular 210, for monitoring the substrate current of each functional module in the chip, wherein the chip includes
At least one functional module；
Processing module 220 determines the corresponding power consumption of each functional module for the substrate current according to each functional module
Adjusting method, the regulating power consumption method for reducing the chip power consumption.
The regulating device of the present embodiment can be used for executing the technical solution of above-mentioned shown embodiment of the method, realize former
Reason is similar with technical effect, and details are not described herein again.
Figure 11 is the structural schematic diagram of the regulating device of chip power-consumption provided by Embodiment 2 of the present invention.In above-described embodiment
On the basis of, as shown in figure 11, the processing module 220 of the present embodiment can also include comparing unit 221 and power switch unit
222；
The comparing unit 221, for being directed to a wherein functional module, by the substrate current of the functional module and first
Preset threshold is compared；
The power switch unit 222, for determining that the substrate current of the functional module is big when the comparing unit 221
When the first preset threshold, the power supply of the functional module is disconnected.
The regulating device of the present embodiment can be used for executing the technical solution of above-mentioned shown embodiment of the method, realize former
Reason is similar with technical effect, and details are not described herein again.
Figure 12 is the structural schematic diagram of the regulating device for the chip power-consumption that the embodiment of the present invention three provides.In above-described embodiment
On the basis of, as shown in figure 12, the processing module 220 of the present embodiment further includes judging unit 223；
The monitoring modular 210, is also used to monitor the source current of each functional module in the chip；
The comparing unit 221, is also used to for a wherein functional module, by the substrate current of the functional module and the
One preset threshold is compared；
The judging unit 223, for determining that the substrate current of the functional module is less than institute when the comparing unit 221
The first preset threshold is stated, judges whether the source current of the functional module is greater than or equal to the second preset threshold；If so, sentencing
Whether the ratio of the source current of the substrate current and functional module for the functional module of breaking is default more than or equal to third
Threshold value；
The power switch unit 222 is also used to determine the substrate current of the functional module when the judging unit 223
When being greater than or equal to third predetermined threshold value with the ratio of the source current of the functional module, the electricity of the functional module is disconnected
Source.
The regulating device of the present embodiment can be used for executing the technical solution of above-mentioned shown embodiment of the method, realize former
Reason is similar with technical effect, and details are not described herein again.
Figure 13 is the structural schematic diagram of the regulating device for the chip power-consumption that the embodiment of the present invention three provides.In above-described embodiment
On the basis of, as shown in figure 13, the processing module 220 of the present embodiment further includes that frequency adjusts unit 224；
The frequency adjusts unit 224, described in being determined when the judging unit 223 for a wherein functional module
The substrate current of functional module is greater than the second preset threshold less than the source current of the first preset threshold, the functional module, and
When the ratio of the substrate current of the functional module and the source current of the functional module is less than third predetermined threshold value, institute is reduced
State the running frequency of functional module.
The regulating device of the present embodiment can be used for executing the technical solution of above-mentioned shown embodiment of the method, realize former
Reason is similar with technical effect, and details are not described herein again.
Figure 14 is the structural schematic diagram of the regulating device for the chip power-consumption that the embodiment of the present invention four provides.In above-described embodiment
On the basis of, as shown in figure 14, the processing module 220 of the present embodiment further includes that frequency pressure adjusts unit 226, which adjusts single
226 yuan can be a unit, be also possible to adjust unit 224 by frequency and voltage regulation unit 225 forms；
Frequency pressure adjusts unit 226, for being directed to a wherein functional module, when the judging unit 223 determines the function
The substrate current of module is greater than the second preset threshold less than the source current of the first preset threshold, the functional module, and described
When the ratio of the substrate current of functional module and the source current of the functional module is less than third predetermined threshold value, the function is reduced
It can the running frequency of module and the voltage of the functional module.
The regulating device of the present embodiment can be used for executing the technical solution of above-mentioned shown embodiment of the method, realize former
Reason is similar with technical effect, and details are not described herein again.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (14)
1. a kind of adjusting method of chip power-consumption characterized by comprising
Monitor the substrate current of each functional module in the chip, wherein the chip includes at least one functional module；
According to the substrate current of each functional module, the corresponding regulating power consumption method of each functional module, the power consumption tune are determined
Section method for reducing the chip power consumption.
2. the method according to claim 1, wherein the substrate current according to each functional module, determines
The corresponding regulating power consumption method of each functional module, specifically includes:
For a wherein functional module, the substrate current of the functional module is compared with the first preset threshold；
When the substrate current of the functional module is greater than or equal to the first preset threshold, the power supply of the functional module is disconnected.
3. according to the method described in claim 2, it is characterized in that, the method also includes:
Monitor the source current of each functional module in the chip；
The substrate current according to each functional module determines the corresponding regulating power consumption method of each functional module, specific to wrap
It includes:
For a wherein functional module, the substrate current of the functional module is compared with the first preset threshold；
When the functional module substrate current be less than first preset threshold, judge that the source current of the functional module is
It is no to be greater than or equal to the second preset threshold；
If so, judge the ratio of the substrate current of the functional module and the source current of the functional module whether be greater than or
Equal to third predetermined threshold value；
If so, disconnecting the power supply of the functional module.
4. according to the method described in claim 3, it is characterized in that, the substrate current according to each functional module, determines
The corresponding regulating power consumption method of each functional module, specifically includes:
For a wherein functional module, when the substrate current of the functional module is less than the first preset threshold, the functional module
Source current be greater than the second preset threshold, and the source current of the substrate current of the functional module and the functional module
When ratio is less than third predetermined threshold value, the running frequency of the functional module is reduced.
5. according to the method described in claim 3, it is characterized in that, the substrate current according to each functional module, determines
The corresponding regulating power consumption method of each functional module, specifically includes:
For a wherein functional module, when the substrate current of the functional module is less than the first preset threshold, the functional module
Source current be greater than the second preset threshold, and the source current of the substrate current of the functional module and the functional module
When ratio is less than third predetermined threshold value, the running frequency of the functional module and the voltage of the functional module are reduced.
6. a kind of regulating device of chip power-consumption characterized by comprising
Monitoring modular, for monitoring the substrate current of each functional module in the chip, wherein the chip includes at least one
Functional module；
Processing module determines the corresponding regulating power consumption side of each functional module for the substrate current according to each functional module
Method, the regulating power consumption method for reducing the chip power consumption.
7. device according to claim 6, which is characterized in that the processing module includes comparing unit and power switch list
Member；
The comparing unit, for being directed to a wherein functional module, by the substrate current of the functional module and the first default threshold
Value is compared；
The power switch unit, for determining that the substrate current of the functional module is greater than or equal to the when the comparing unit
When one preset threshold, the power supply of the functional module is disconnected.
8. device according to claim 7, which is characterized in that the processing module further includes judging unit；
The monitoring modular is also used to monitor the source current of each functional module in the chip；
The comparing unit is also used to preset the substrate current of the functional module with first for a wherein functional module
Threshold value is compared；
The judging unit, for determining that it is default that the substrate current of the functional module is less than described first when the comparing unit
Threshold value, judges whether the source current of the functional module is greater than or equal to the second preset threshold；If so, judging the function
Whether the ratio of the substrate current of module and the source current of the functional module is greater than or equal to third predetermined threshold value；
The power switch unit, be also used to when the judging unit determine the functional module substrate current and the function
When the ratio of the source current of module is greater than or equal to third predetermined threshold value, the power supply of the functional module is disconnected.
9. device according to claim 8, which is characterized in that the processing module further include:
Frequency adjusts unit, for being directed to a wherein functional module, when the judging unit determines the substrate of the functional module
Electric current is greater than the second preset threshold, and the functional module less than the source current of the first preset threshold, the functional module
When the ratio of substrate current and the source current of the functional module is less than third predetermined threshold value, the fortune of the functional module is reduced
Line frequency；And/or
Frequency pressure adjusts unit, for being directed to a wherein functional module, when the judging unit determines the substrate of the functional module
Electric current is greater than the second preset threshold, and the functional module less than the source current of the first preset threshold, the functional module
When the ratio of substrate current and the source current of the functional module is less than third predetermined threshold value, the fortune of the functional module is reduced
The voltage of line frequency and the functional module.
10. a kind of adjusting circuit of chip power-consumption, which is characterized in that the chip includes at least one functional module, the electricity
Road includes voltage modulated module and at least one power switch, and the functional module connects one to one with the power switch,
The voltage modulated module is connect with the power supply of the power switch of each functional module and the chip respectively；
The voltage modulated module, for monitoring the substrate current of each functional module, according to the substrate current of each functional module,
Determine the corresponding regulating power consumption method of each functional module, the regulating power consumption method for reducing the chip power consumption.
11. circuit according to claim 10, which is characterized in that the voltage modulated module is specifically used for for wherein
The substrate current of the functional module is compared by one functional module with the first preset threshold；When the lining of the functional module
When bottom electric current is greater than or equal to the first preset threshold, the power switch of the functional module is disconnected.
12. circuit according to claim 11, which is characterized in that the voltage modulated module is also used to monitor the core
The source current of each functional module in piece；
The voltage regulator module, also particularly useful for for a wherein functional module, by the substrate current of the functional module with
First preset threshold is compared；When the functional module substrate current be less than first preset threshold, judge the function
Whether the source current of energy module is greater than or equal to the second preset threshold；If so, judging the substrate current of the functional module
Whether it is greater than or equal to third predetermined threshold value with the ratio of the source current of the functional module；If so, disconnecting the function
The power switch of module.
13. circuit according to claim 11, which is characterized in that the circuit further includes connecting with each functional module
Frequency modulation(PFM) module；
The frequency modulation(PFM) module, for monitoring the substrate current and source current of each functional module；
The frequency modulation(PFM) module, also particularly useful for a wherein functional module is directed to, when the substrate current of the functional module is small
It is greater than the second preset threshold, and the substrate electricity of the functional module in the source current of the first preset threshold, the functional module
When the ratio of stream and the source current of the functional module is less than third predetermined threshold value, the operation frequency of the functional module is reduced
Rate.
14. circuit according to claim 11, which is characterized in that the circuit further includes connecting with each functional module
Frequency modulation(PFM) module；
The frequency modulation(PFM) module, for monitoring the substrate current and source current of each functional module；
For a wherein functional module, when the substrate current of the functional module is less than the first preset threshold, the functional module
Source current be greater than the second preset threshold, and the source current of the substrate current of the functional module and the functional module
When ratio is less than third predetermined threshold value, running frequency of the frequency modulation(PFM) module for reducing the functional module, the electricity
Press modulation module for reducing the voltage of the functional module.
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