CN101470512A - Power supply management module of CPU - Google Patents
Power supply management module of CPU Download PDFInfo
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- CN101470512A CN101470512A CNA2007103058108A CN200710305810A CN101470512A CN 101470512 A CN101470512 A CN 101470512A CN A2007103058108 A CNA2007103058108 A CN A2007103058108A CN 200710305810 A CN200710305810 A CN 200710305810A CN 101470512 A CN101470512 A CN 101470512A
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Abstract
The invention discloses a power management module of a central processing unit, which comprises a basic input/output system chip, a power regulating module and a DC-DC converting module. The basic input/output system chip is coupled with the central processing unit and the power regulating module, and is provided with power consumption information of the central processing unit. The power regulating module outputs power control signals based on the power consumption information of the central processing unit. The DC-DC converting module coupled with the central processing unit and the power regulating module is provided with a plurality of DC-DC converters, wherein the number of the DC-DC converters is determined by the power control signals, thereby providing adaptive power to the central processing unit, and further realizing the power-saving function.
Description
Technical field
The invention relates to a kind of power management module, and particularly relevant for a kind of power management module of central processing unit.
Background technology
In recent years, along with the lifting of the arithmetic capability of central processing unit (Central Processing Unit is hereinafter to be referred as CPU), the power of its required consumption also increases thereupon.In order to make CPU have best usefulness, DC-to-dc modular converter (DC-DC Converter Module) must provide the power of capacity to use to CPU.Below explain at now DC-to-dc modular converter.
Fig. 1 is the DC-to-dc modular converter of traditional central processing unit.Please refer to Fig. 1, in order to satisfy the high-power demand of central processing unit 10 now, power supply disposes 4 groups DC-to-DC converter (DC-DC Converter) (31～34) for the DC-to-dc modular converter 20 of CPU10 at present.PDM keyer (Pulse Width Modulation Controller, hereinafter to be referred as PWM Controller) 40 can produce pulse-width signal PWM1～PWM4 and give DC-to-DC converter 31～34 respectively, wherein the phase place of pulse-width signal PWM1～PWM4 is different.DC-to-DC converter 31～34 is given CPU 10 according to pulse-width signal PWM1～PWM4 supply power respectively again.
Hold above-mentionedly, when CPU 10 is the CPU of high arithmetic capability, then need to consume bigger power (about 130W), DC-to-DC converter 31～34 is supplied the power supply of out of phase respectively and is given CPU 10, can make CPU 10 have best efficiency.Yet, when CPU 10 is the CPU of low arithmetic capability, only needing to consume smaller power (60W or 80W), DC-to-DC converter 31～34 obviously can be wasted many unnecessary power supplys if still give CPU 10 with 4 phase places while power supply.
Summary of the invention
The invention provides a kind of power management module of central processing unit, use and reach less electricity consumption.
The present invention proposes a kind of power management module of central processing unit, comprises ROM-BIOS chip, power adjustment module and DC-to-dc modular converter.The ROM-BIOS chip couples central processing unit, has the power consumption information of central processing unit.The power adjustment module couples the ROM-BIOS chip, according to the power consumption information of central processing unit, out-put supply control signal.The DC-to-dc modular converter couples central processing unit and power adjustment module, has a plurality of DC-to-DC converter, and enables the quantity of above-mentioned DC-to-DC converter according to power control signal decision, use provide suitable power supply to central processing unit.
In one embodiment of this invention, the DC-to-dc modular converter also comprises PDM keyer, demoder and switch module.PDM keyer couples each DC-to-DC converter, in order to provide pulse-width signal to each DC-to-DC converter.Demoder couples the power adjustment module, can produce a plurality of switching signals according to power control signal.Whether switch module has a plurality of switches, is respectively coupled between the output terminal and central processing unit of each DC-to-DC converter, provide power supply to central processing unit in order to determine each DC-to-DC converter.In another embodiment, switch is MOS field-effect transistor or two-carrier transistor.In another embodiment, the power adjustment module comprises baseboard management controller or complex programmable logic device, in order to produce power control signal.
In one embodiment of this invention, the DC-to-dc modular converter also comprises PDM keyer.Whether PDM keyer couples each DC-to-DC converter, provide pulse-width signal to each DC-to-DC converter according to the power control signal decision, enables the quantity of DC-to-DC converter with decision.
In one embodiment of this invention, the power adjustment module sees through IC bus and the communication of DC-to-dc modular converter.In another embodiment, the ROM-BIOS chip sees through chipset and central processing unit communication.In another embodiment, the ROM-BIOS chip sees through low pin count interface or solid hub and chipset communication.In an embodiment more, chipset comprises the north bridge chips South Bridge chip.North bridge chips couples central processing unit.South Bridge chip couples north bridge chips and ROM-BIOS chip.
Power management module of the present invention can see through the power consumption information that the ROM-BIOS chip is obtained central processing unit because of adopting the power adjustment module.The DC-to-dc modular converter is again according to the power consumption information of central processing unit, uses decision and enables the quantity of DC-to-DC converter, and then provide suitable power supply to central processing unit, therefore can reach less electricity consumption.
For above-mentioned feature and advantage of the present invention can be become apparent, several embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the DC-to-dc modular converter of traditional central processing unit.
Fig. 2 is the synoptic diagram according to the power management module of a kind of central processing unit of the first embodiment of the present invention.
Fig. 3 is the detailed maps of a kind of chipset, power adjustment module and DC-to-dc modular converter according to the first embodiment of the present invention.
Fig. 4 is according to a kind of DC-to-DC converter of the first embodiment of the present invention and the detailed maps of switch module.
Fig. 5 is the synoptic diagram according to each pulse-width signal of the first embodiment of the present invention.
Fig. 6 is the synoptic diagram according to the power management module of a kind of central processing unit of the second embodiment of the present invention.
Embodiment
First embodiment
Fig. 2 is the synoptic diagram according to the power management module of a kind of central processing unit of the first embodiment of the present invention.Please refer to Fig. 2, the power management module 50 of CPU 10 comprises ROM-BIOS chip (BasicInput/Output System is hereinafter to be referred as BIOS) 60, power adjustment module 70 and DC-to-dc modular converter 21.CPU 10 coupling chip groups 80, CPU 10 can see through chipset 80 and link up with other devices.BIOS60 sees through chipset 80 and couples CPU 10, and wherein BIOS 60 for example can be low pin count interface (Low Pin Count is called for short LPC) or solid hub (FWH) with the communication interface of chipset 80.
Motherboard (not illustrating) is gone up and when starting shooting for the first time, BIOS 60 can capture and store every information of CPU 10, for example power consumption information when CPU 10 is installed on.Power adjustment module 70 couples BIOS 60 and DC-to-dc modular converter 21, can produce power control signal PCS according to the power consumption information of CPU 10, uses that DC-to-dc modular converter 21 being set.Power adjustment module 70 for example is IC bus (Inter-integrated Circuit Bus abbreviates the I2C bus as) with the communication interface of DC-to-dc modular converter 21.Cause voltage level offset quite easily owing to dynamically adjust the power supply that DC-to-dc modular converter 21 offers CPU 10, so power adjustment module 70 can send reopening machine signal reboot, and when starting shooting for the second time, DC-to-dc modular converter 21 is set again.
Hold above-mentionedly, DC-to-dc modular converter 21 couples CPU 10 and power adjustment module 70.DC-to-dc modular converter 21 has a plurality of DC-to-DC converter, be that example describes with 4 DC-to-DC converter (31～34) in the present embodiment, but the present invention is not as limit.When starting shooting for the second time, DC-to-dc modular converter 21 can decide the quantity that enables (Enable) DC-to-DC converter (31～34) according to the power control signal PCS that power adjustment module 70 is provided, use provide suitable power supply to CPU 10.Thus, dc conversion modules 21 can be supplied with suitable power supply according to dissimilar CPU, uses the function of reaching power saving.How to determine the quantity that enables DC-to-DC converter (31～34) to be described in more detail with next at power adjustment module 70.
Fig. 3 is the detailed maps of a kind of chipset, power adjustment module and DC-to-dc modular converter according to the first embodiment of the present invention.Fig. 4 is according to a kind of DC-to-DC converter of the first embodiment of the present invention and the detailed maps of switch module.Please merge with reference to Fig. 2, Fig. 3 and Fig. 4, in the present embodiment, chipset 80 has comprised north bridge chips 81 and South Bridge chip 82.North bridge chips 81 couples CPU 10.South Bridge chip 82 couples north bridge chips 81 and BIOS 60.Power adjustment module 70 has comprised baseboard management controller (BaseboardManagement Controller is hereinafter to be referred as BMC) 71.BMC 71 is in order to produce power control signal PCS.
On the other hand, DC-to-dc modular converter 21 has not only comprised DC-to-DC converter 31～34, has more comprised PDM keyer 40, demoder (Decoder) 90 and switch module 100.Switch module 100 has comprised switch 151,152.Switch 151,152 for example is MOS field-effect transistor (Metal OxideSemiconductor Field Effect Transistor is called for short MOSFET) or two-carrier transistor (BipolarJunction Transistor is called for short BJT).
Hold above-mentionedly, DC-to-DC converter 31 comprised non-overlapping (Non-overlap) unit 110, gone up transistor 121, transistor 122 and inductance 130 down.Non-overlapping unit 110 can convert pulse-width signal PWM1 to one group of non-overlapping signal and use control upward transistor 121 and following transistor 122, uses and avoids transistor 121 to cause a large amount of leakage currents with following transistor 122 conductings simultaneously.Say that further inductance 130 can store electric power according to the start of last transistor 121 and following transistor 122 with electric capacity 140, uses and reaches the DC voltage conversion.By that analogy, DC-to-DC converter 32～34.
It should be noted that in the present embodiment demoder 90 couples BMC 71, can produce switching signal SC1, SC2, whether use gauge tap 151,152 conductings according to power control signal PCS.Whether switch 151,152 is respectively coupled between the output terminal and CPU 10 of DC-to- DC converter 33,34, provide power supply to CPU 10 in order to decision DC-to-DC converter 33,34.That is to say, when the power consumption of CPU 10 little (60W or 80W), can utilize switching signal SC1, SC2 that switch 151,152 is ended, and then forbidden energy (Disable) DC-to- DC converter 33,34, the waste of electric power avoided.When the power consumption of CPU 10 big (130W), can utilize switching signal SC1, SC2 to make switch 151,152 conductings, and then enable DC-to- DC converter 33,34, use making CPU 10 have best efficiency.Thus, not only can keep the usefulness of CPU 10 more can reach less electricity consumption further.
In order to highlight the power saving effect that present embodiment can be reached, with next with traditional CPU the power supply service efficiency and the power supply service efficiency of the CPU of present embodiment do one relatively.Table one is the cpu power service efficiency comparison sheet of tradition and present embodiment.Please merge with reference to Fig. 1, Fig. 2 and table one, be what watts no matter can obviously find out the power consumption information of CPU10 by table one, the DC-to-DC converter 20 of conventional art all adopts 4 phase places out-put supply simultaneously, uses and supplies with CPU 10, uses making CPU 10 have best efficiency.Yet when CPU 10 only need consume smaller power (60W or 80W), obviously can waste many unnecessary power supplys.
Accept above-mentioned, when the power consumption information of CPU 10 is 80W, present embodiment is forbidden energy DC-to-DC converter 34 temporarily, makes the quantity that enables of DC-to-DC converter become 3, therefore with tradition in comparison present embodiment can promote 2～4% power supply service efficiency.When the power consumption information of CPU 10 is 60W, present embodiment is forbidden energy DC-to- DC converter 33,34 temporarily, make the quantity that enables of DC-to-DC converter become 2, therefore with tradition in comparison present embodiment can promote 6～10% power supply service efficiency.
The cpu power service efficiency comparison sheet of table one tradition and present embodiment
What deserves to be mentioned is, though the power management module of CPU has been depicted a possible kenel in the foregoing description, usually know that the knowledgeable should know but have in the affiliated technical field, each manufacturer is all different for the design of the power management module of CPU, and therefore application of the present invention is when being not restricted to the possible kenel of this kind.In other words, so long as decide the quantity that enables DC-to-DC converter, be to have met spiritual place of the present invention just according to the power consumption information of CPU.Below lift several embodiments again and know that usually the knowledgeable can further understand spirit of the present invention, and implement the present invention so that this area has.
Second embodiment
Though first embodiment decides the quantity that enables DC-to-DC converter with switch module 100, haveing the knack of art technology person can change its embodiment according to its demand.For example, Fig. 6 is the synoptic diagram according to the power management module of a kind of central processing unit of the second embodiment of the present invention.Please merge with reference to Fig. 3 and Fig. 6, the label and the first embodiment components identical in the present embodiment can be with reference to above-mentioned embodiments.It should be noted that, the PDM keyer 41 of present embodiment DC-to-dc modular converter 22 can determine whether output pulse width modulation signal PWM1～PWM4 according to the power control signal PCS that BMC 71 is provided, and then decision enables the quantity of DC-to-DC converter.
In more detail, when the power consumption information of CPU 10 was 80W, PDM keyer 41 can stop output pulse width modulation signal PWM4, made the quantity that enables of DC-to-DC converter become 3.When the power consumption information of CPU 10 was 60W, PDM keyer 41 can stop output pulse width modulation signal PWM3, PWM4, made the quantity that enables of DC-to-DC converter become 2.The benefit of this practice not only can be reached the effect similar with the foregoing description, more can save the hardware cost of switch module among Fig. 3 100 and demoder 90.
Referring again to Fig. 3 and Fig. 6, though power adjustment module 70 utilizes BMC71 to produce power control signal PCS in first embodiment and second embodiment, but haveing the knack of art technology person also can adopt complex programmable logic device (Complex Programmable Logic Device CPLD) produces power control signal PCS.
In sum, power management mould of the present invention can be according to the power consumption information of central processing unit, use decision and enable the quantity of DC-to-DC converter, and then provide suitable power supply to central processing unit, therefore not only can keep the operation efficiency of central processing unit, more can reach less electricity consumption.
Though the present invention discloses as above with several embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when with being as the criterion that claim was defined.
Claims (13)
1. the power management module of a central processing unit comprises:
One ROM-BIOS chip couples this central processing unit, has the power consumption information of this central processing unit;
One power adjustment module couples this ROM-BIOS chip, according to the power consumption information of this central processing unit, exports a power control signal; And
One direct current-dc conversion modules, couple this central processing unit and this power adjustment module, have a plurality of DC-to-DC converter, and enable the quantity of those DC-to-DC converter according to the decision of this power control signal, use provide suitable power supply to this central processing unit.
2. power management module as claimed in claim 1 is characterized in that, this DC-to-dc modular converter also comprises:
One PDM keyer couples those DC-to-DC converter, in order to provide a plurality of pulse-width signals to those DC-to-DC converter;
One demoder couples this power adjustment module, produces a plurality of switching signals according to this power control signal; And
One switch module has a plurality of switches, is respectively coupled between the output terminal and this central processing unit of those DC-to-DC converter, in order to determine respectively whether this DC-to-DC converter provides power supply to this central processing unit.
3. power management module as claimed in claim 2 is characterized in that, those switches are MOS field-effect transistor or two-carrier transistor.
4. power management module as claimed in claim 2 is characterized in that, this power adjustment module comprises:
One baseboard management controller couples this PDM keyer, in order to produce this power control signal.
5. power management module as claimed in claim 2 is characterized in that, this power adjustment module comprises:
One complex programmable logic device couples this PDM keyer, in order to produce this power control signal.
6. power management module as claimed in claim 1 is characterized in that, this DC-to-dc modular converter also comprises:
Whether one PDM keyer couples those DC-to-DC converter, provide pulse-width signal to this DC-to-DC converter respectively according to the decision of this power control signal, enables the quantity of DC-to-DC converter to determine those.
7. power management module as claimed in claim 6 is characterized in that, this power adjustment module comprises:
One baseboard management controller couples this PDM keyer, in order to produce this power control signal.
8. power management module as claimed in claim 6 is characterized in that, this power adjustment module comprises:
One complex programmable logic device couples this PDM keyer, in order to produce this power control signal.
9. power management module as claimed in claim 1 is characterized in that, this power adjustment module sees through an IC bus and this DC-to-dc modular converter is linked up.
10. power management module as claimed in claim 1 is characterized in that, this ROM-BIOS chip sees through a chipset and this central processing unit is linked up.
11. power management module as claimed in claim 10 is characterized in that, this ROM-BIOS chip sees through a low pin count interface and this chipset is linked up.
12. power management module as claimed in claim 10 is characterized in that, this ROM-BIOS chip sees through a solid hub and this chipset is linked up.
13. power management module as claimed in claim 10 is characterized in that, this chipset comprises:
One north bridge chips couples this central processing unit; And
One South Bridge chip couples this north bridge chips and this ROM-BIOS chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103058108A CN101470512A (en) | 2007-12-24 | 2007-12-24 | Power supply management module of CPU |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103058108A CN101470512A (en) | 2007-12-24 | 2007-12-24 | Power supply management module of CPU |
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| CN101470512A true CN101470512A (en) | 2009-07-01 |
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| CNA2007103058108A Pending CN101470512A (en) | 2007-12-24 | 2007-12-24 | Power supply management module of CPU |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102541239A (en) * | 2010-12-16 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Network equipment and power consumption control method thereof |
| CN102566726A (en) * | 2010-12-16 | 2012-07-11 | 鸿富锦精密工业（深圳）有限公司 | Automatic power consumption control network equipment and power consumption control method thereof |
| CN102622072A (en) * | 2012-01-16 | 2012-08-01 | 浪潮电子信息产业股份有限公司 | Method for reducing using quantity of equal-voltage power pack |
| CN102650904A (en) * | 2011-02-24 | 2012-08-29 | 元太科技工业股份有限公司 | Low power consumption circuit and method for reducing power consumption |
| CN102664742A (en) * | 2012-04-28 | 2012-09-12 | 浪潮电子信息产业股份有限公司 | Power dynamic management method based on embedded server |
| CN106125885A (en) * | 2010-12-21 | 2016-11-16 | 英特尔公司 | System and method for power management |
-
2007
- 2007-12-24 CN CNA2007103058108A patent/CN101470512A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102541239A (en) * | 2010-12-16 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Network equipment and power consumption control method thereof |
| CN102566726A (en) * | 2010-12-16 | 2012-07-11 | 鸿富锦精密工业（深圳）有限公司 | Automatic power consumption control network equipment and power consumption control method thereof |
| CN106125885A (en) * | 2010-12-21 | 2016-11-16 | 英特尔公司 | System and method for power management |
| CN106125885B (en) * | 2010-12-21 | 2019-12-31 | 英特尔公司 | System and method for power management |
| CN102650904A (en) * | 2011-02-24 | 2012-08-29 | 元太科技工业股份有限公司 | Low power consumption circuit and method for reducing power consumption |
| CN102650904B (en) * | 2011-02-24 | 2015-03-25 | 元太科技工业股份有限公司 | Low power consumption circuit and method for reducing power consumption |
| US9075613B2 (en) | 2011-02-24 | 2015-07-07 | E Ink Holdings Inc. | Low power consumption circuit and method for reducing power consumption |
| CN102622072A (en) * | 2012-01-16 | 2012-08-01 | 浪潮电子信息产业股份有限公司 | Method for reducing using quantity of equal-voltage power pack |
| CN102664742A (en) * | 2012-04-28 | 2012-09-12 | 浪潮电子信息产业股份有限公司 | Power dynamic management method based on embedded server |
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Open date: 20090701 |