CN105807879A - Power system and power supply control method - Google Patents
Power system and power supply control method Download PDFInfo
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- CN105807879A CN105807879A CN201410834892.5A CN201410834892A CN105807879A CN 105807879 A CN105807879 A CN 105807879A CN 201410834892 A CN201410834892 A CN 201410834892A CN 105807879 A CN105807879 A CN 105807879A
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Abstract
The present invention provides a power system and a power supply control method. The power system comprises a power supply unit supplying a plurality of first PWM power sources and a plurality of second PWM power sources; a terminal element including a first work unit and a second work unit, wherein the first unit receives the plurality of first PWM power sources; a switching unit for receiving the plurality of second PWM power sources and switching the plurality of second PWM power sources to the first work unit or the second work unit; and a control unit setting voltage of the plurality of second PWM power sources and controlling switching action of the switching unit according to a control signal.
Description
Technical field
The present invention is related to a kind of power system and method for controlling power supply, and is particularly to power system and the method for controlling power supply of a kind of quantity allowing hand over and supplying the PWM power supply to CPU.
Background technology
Central processing unit (CPU) is installed on motherboard and is responsible for the computer program that execution is complicated, and image processor (GPU) is positioned at the upper responsible image operation of display card.Owing to the design of recent CPU is all integrated with the IPF of GPU and becomes same monomer (hereinafter referred to as CGPU), therefore when installing CGPU on motherboard, even if not being additionally inserted into display card, computer also can normally output screen picture.
Although CGPU is a monomer but CPU and GPU still processes respective work respectively, it is therefore desirable to each independent power supply.Pulse width modulation (PWM) control circuit is responsible for supplying electricity to the power supply circuit of CGPU, in order to power stable, reduce element load and temperature, prolongation element service life, improve overclocking usefulness, therefore the PWM power supply of leggy can be provided.
In general, owing to the CGPU display usefulness provided can be poorer than the independent GPU on display card, therefore, when user additionally mounted display card for higher display usefulness, the work of image computing can give the GPU on display card completely without the GPU supplied electricity within CGPU.
But, assume that pwm control circuit is designed for the PWM power supply of 8 phase places to CGPU traditionally, wherein the PWM power supply of 4 phase places is to CPU, and the PWM power supply of other 4 phase places is to GPU.When user installs display card for higher display usefulness, the GPU within CGPU need not power, therefore originally supplies the PWM power supply of 4 phase places to the GPU within CGPU just as waste.
Summary of the invention
The present invention is to solve the above-mentioned problem knowing technology, and propose power system and the method for controlling power supply of a kind of quantity allowing hand over and supplying the PWM power supply to CPU.
The present invention proposes a kind of power system, including: a power-supply unit, supply multiple PWM power supplys and the 2nd multiple PWM power supplys；One final element, has one first working cell and one second working cell, and wherein this first working cell receives multiple PWM power supplys；One switch unit, in order to receive the 2nd the plurality of PWM power supply and to switch the 2nd the plurality of PWM power supply supply to this first working cell or this second working cell；And a control unit, set the voltage of the 2nd the plurality of PWM power supply according to a control signal and control the switching action of this switch unit.
In one embodiment, this first working cell is a central processing unit (CPU), and this second working cell is a graphic process unit (GPU).And in this power system, this control signal indicates that whether be provided with the logical signal that display blocks, when there being installation display card, the 2nd PWM power supply that this control unit controls the switching of this switch unit the plurality of is supplied to this CPU；Maybe when being fitted without display card, the 2nd PWM power supply that this control unit controls the switching of this switch unit the plurality of is supplied to this GPU.
In one embodiment, this power-supply unit more supplies at least one 3rd PWM power supply to this second working cell, and this control signal indicates that the signal of this second working cell load factor, when this second working cell load factor is more high, this control unit controls to supply the quantity to this second working cell in the 2nd PWM power supply that the increase of this switch unit is the plurality of.
Again in another embodiment, this power-supply unit more supplies at least one 3rd PWM power supply to this second working cell, and this control signal indicates that the signal of the first working cell load factor, when this first working cell load factor is more high, this control unit controls to supply the quantity to this first working cell in the 2nd PWM power supply that the increase of this switch unit is the plurality of.
According to an aspect of the present invention, the present invention it is also proposed that a kind of method for controlling power supply, including: a final element is provided, there is one first working cell and one second working cell；Supply multiple PWM power supplys to this first working cell and the 2nd multiple PWM power supplys to this second working cell；And when judgement has this external device of installation, by the 2nd the plurality of PWM power supply switching supply to this first working cell, and set the voltage voltage equal to a plurality of PWM power supply of the 2nd the plurality of PWM power supply.
In one embodiment, this first working cell is a CPU, and this second working cell is a GPU, and this external device is a display card.
According to an aspect of the present invention, the present invention it is also proposed that a kind of method for controlling power supply, including: provide a final element, containing one first working cell and one second working cell；Supply multiple PWM power supplys to this first working cell, the 2nd multiple PWM power supplys is in this first working cell and this second working cell and at least one 3rd PWM power supply to this second working cell；When judging that this second working cell load factor is more big, increase in the 2nd the plurality of PWM power supply and the quantity to this second working cell is provided；And set the voltage of the 2nd PWM power supply that this supply object changes.
According to another aspect of the present invention, the present invention it is also proposed that a kind of method for controlling power supply, including: a final element is provided, there is one first working cell and one second working cell；Supply multiple PWM power supplys to this first working cell, the 2nd multiple PWM power supplys is in this first working cell and this second working cell and at least one 3rd PWM power supply to this second working cell；When judging that this first working cell load factor is more big, increase in the 2nd the plurality of PWM power supply and the quantity to this first working cell is provided；And set the voltage of the 2nd PWM power supply that this supply object changes.
In one embodiment, this first working cell is a CPU, and this second working cell is a GPU.
According to the present invention, therefore the PWM power supply of the part that power-supply unit is supplied can realize that power supply is stable according to or without installing display card or the load factor of CPU, GPU switch supply to CPU or GPU, reduce element load and temperature, prolongation element service life, improves the advantages such as overclocking usefulness.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the essential structure of the power system showing the present invention.
Fig. 2 is the schematic diagram of the first embodiment of the power system of the present invention.
Fig. 3 is the flow chart of the method for controlling power supply showing power system according to a first embodiment of the present invention.
Fig. 4 a and Fig. 4 b is the schematic diagram of the second embodiment of the power system of the present invention.
Fig. 5 is the flow chart of the method for controlling power supply showing power system according to a second embodiment of the present invention.
Fig. 6 a and Fig. 6 b is the schematic diagram of the 3rd embodiment of the power system of the present invention.
Fig. 7 is the flow chart of the method for controlling power supply showing power system according to a third embodiment of the present invention.
Fig. 8 is the flow chart of another method for controlling power supply showing power system according to a third embodiment of the present invention.
Wherein, description of reference numerals is as follows:
10～pwm control circuit；
20～CGPU；
201～CPU；
202～GPU；
30～relay (RELAY)；
40～microprocessor (MCU)；
50～display card；
C1, C2, C3～control signal.
Detailed description of the invention
Graphic embodiments of the invention are described below by way of each.Fig. 1 is the schematic diagram of the essential structure of the power system showing the present invention.
As it is shown in figure 1, the power system of the present invention includes: power-supply unit, final element, switch unit and control unit.Final element is equivalent to aforesaid CGPU, and possesses the first working cell being equivalent to aforementioned CPU and the second working cell being equivalent to aforementioned GPU.But, final element can also be that other have same configuration and internal different operating unit needs each self-powered element.Power-supply unit supply at least two power supply, wherein a power supply is directly fed to the first working cell of final element, and another power supply then supplies to switch unit.Power-supply unit can be aforesaid pwm control circuit, and the power supply of supply can be the PWM power supply of multiple phase place.Power-supply unit can also be low dropout voltage regulator (Lowdropoutregulator) or other power supplys supply element.Switch unit receives a power supply of power-supply unit and selectively by the first working cell of this power supply supply to final element or the second working cell.Switch unit can by MOSFET, relay (Relay), switch the optional output channel such as (Switch), short circuit cap (Jump) element constituted.Control unit can receive a control signal, and determine that the power supply entering switch unit to supply to the first working cell or the second working cell according to this control signal, control unit more can set that the voltage of this power supply so that it is meets the specification voltage needed for the first working cell or this second working cell.Control unit can be platform control unit (Platformcontrollerhub, PCH), microcontroller (Microcontroller, MCU), I/O chip (I/Ochip), basic input output system (BasicInput/OutputSystem, BIOS) or other can the element of computing and control.
The framework of the power system according to Fig. 1, the power supply that power-supply unit is supplied supplies regularly to the first working cell, another power supply then can be optionally fed by switch unit to the first working cell or the second working cell, if therefore the second working cell is on the shelf, originally supply can also transfer supply to the first working cell to the power supply of the second working cell, and is formed without waste.
Fig. 2 is the schematic diagram of the first embodiment of the power system of the present invention.In the first embodiment, power-supply unit is pwm control circuit 10, and final element is CGPU20, and switch unit is relay 30, and control unit is microcontroller 40.Pwm control circuit 10 supplies the PWM power supply PHASE1～PHASE8 of 8 phase places, PWM power supply PHASE1～PHASE4 is fixedly attached to the CPU201 in CGPU20, PWM power supply PHASE5～PHASE8 is then connected to CPU201 and GPU202 in CGPU20 by relay 30, microprocessor 40 judge that relay 30 to switch PWM power supply PHASE5～PHASE8 to CPU201 or GPU202.The judgement of microprocessor 40 is based on a control signal C1, control signal C1 and indicates that with or without the logical signal installing display card 50 (slot is with or without inserting display card 50 specifically).When there being installation display card 50, the GPU then represented in CGPU20 need not power, therefore microprocessor 40 can control relay 30 PWM power supply PHASE5～PHASE8 is supplied to CPU201, and sets the supply voltage of PWM power supply PHASE5～PHASE8 as the specification voltage needed for CPU201；Otherwise, when being fitted without display card 50, the GPU then represented in CGPU20 needs running to process display function, therefore microprocessor 40 can control relay 30 PWM power supply PHASE5～PHASE8 is supplied to GPU202, and sets the supply voltage of PWM power supply PHASE5～PHASE8 as the specification voltage needed for GPU202.
According to above-described embodiment, if user installs display when being stuck in computer for higher display usefulness, originally supply to the PWM power supply of 4 phase places of the GPU in CGPU can transfer supply to CPU, therefore CPU receives the PWM power supply of 8 phase places, it is possible to reaches that power supply is stable, reduce element load and temperature, prolongation element service life, improves the advantages such as overclocking usefulness.
Fig. 3 is the flow chart of the method for controlling power supply showing power system according to a first embodiment of the present invention.First, after booting computer, determine whether installation display card at once in step S301, if being fitted without display card, then entering step S302, microcontroller 40 controls relay 30 and PWM power supply PHASE5～PHASE8 switches to the passage (this passage can also be preset passage) of supply GPU202.Then, in step S303, the voltage (presetting such as 0V) of PWM power supply PHASE5～PHASE8 is set as being suitable for the supply voltage of GPU202 by microcontroller 40.Otherwise, if judging there is installation display card in step S301, then entering step S304, microcontroller 40 controls relay 30 and PWM power supply PHASE5～PHASE8 switches to the passage of supply CPU201.Then, in step S305, the voltage of PWM power supply PHASE5～PHASE8 is set as being suitable for the supply voltage of CPU201 by microcontroller 40.
Fig. 4 a and Fig. 4 b is the schematic diagram of the second embodiment of the power system of the present invention.In a second embodiment, the passage switching of PWM power supply does not show card according to or without installing, but determines according to the load factor of GPU.
As shown in fig. 4 a, PWM power supply PHASE1～PHASE4 is fixedly attached to the CPU201 in CGPU20, PWM power supply PHASE5～PHASE7 is connected to CPU201 and GPU202 in CGPU20 by relay 30, and PWM power supply PHASE8 is fixedly attached to the GPU202 in CGPU20.Microcontroller 40 can adjust the PWM power supply PHASE5～PHASE7 supply ratio to CPU201 and GPU202 according to the control signal C2 of the load factor representing GPU202.Specifically, as shown in Figure 4 b, GPU load factor can be divided into 4 intervals, namely 0%～25%, 26%～50%, 51%～75%, 76%～100%.Microprocessor 40 switches the passage of PWM power supply PHASE5～PHASE7 according to the table in Fig. 4 b.Specifically, when GPU load factor is more high, PWM power supply PHASE5～PHASE7 supplies to the PWM power phase number of GPU202 more many, reaching that power supply is stable, reduce element load and temperature, prolongation element service life, improve the advantages such as overclocking usefulness.
Fig. 5 is the flow chart of the method for controlling power supply showing power system according to a second embodiment of the present invention.First, in step S501, microcontroller 40 receives the signal of display GPU load factor.In step S502, it is judged that whether the interval at GPU load factor place changes (such as being changed over the interval of 51%～75% by the interval of 26%～50%), if judging the interval change at GPU load factor place, then enter step S503；Otherwise, if the interval at GPU load factor place is constant, then return to step S501.In step S503, microcontroller 40 determine according to the interval at GPU load factor place namely will the PWM power supply of switching channel, and these want the voltage of the PWM power supply of switching channel be set as being suitable for the supply voltage of new supply object.Then, in step S504, the switching of passage is performed.Step S504 returns to step S501 after completing.
Fig. 6 a and Fig. 6 b is the schematic diagram of the 3rd embodiment of the power system of the present invention.In the third embodiment, the passage switching of PWM power supply does not show card according to or without installing, but determines according to the load factor of CPU.
As shown in Figure 6 a, PWM power supply PHASE1～PHASE4 is fixedly attached to the CPU201 in CGPU20, PWM power supply PHASE5～PHASE7 is connected to CPU201 and GPU202 in CGPU20 by relay 30, and PWM power supply PHASE8 is fixedly attached to the GPU202 in CGPU20.Microcontroller 40 can adjust the PWM power supply PHASE5～PHASE7 supply ratio to CPU201 and GPU202 according to the control signal C3 of the load factor representing CPU201.Specifically, as shown in Figure 6 b, cpu load rate can be divided into 4 intervals, namely 0%～25%, 26%～50%, 51%～75%, 76%～100%.Microprocessor 40 switches the passage of PWM power supply PHASE5～PHASE7 according to the table in Fig. 6 b.Specifically, when cpu load rate is more high, PWM power supply PHASE5～PHASE7 supplies to the PWM power phase number of CPU201 more many, reaching that power supply is stable, reduce element load and temperature, prolongation element service life, improve the advantages such as overclocking usefulness.
Fig. 7 is the flow chart of the method for controlling power supply showing power system according to a third embodiment of the present invention.First, in step S701, microcontroller 40 receives the signal of display cpu load rate.In step S702, it is judged that whether the interval at cpu load rate place changes (such as being changed over the interval of 51%～75% by the interval of 26%～50%), if judging the interval change at cpu load rate place, then enter step S703；Otherwise, if the interval at cpu load rate place is constant, then return to step S701.In step S703, microcontroller 40 determine according to the interval at cpu load rate place namely will the PWM power supply of switching channel, and these want the voltage of the PWM power supply of switching channel be set as being suitable for the supply voltage of new supply object.Then, in step S704, the switching of passage is performed.Step S704 returns to step S701 after completing.
Fig. 8 is the flow chart of another method for controlling power supply showing power system according to a third embodiment of the present invention.First, in step S801, microcontroller 40 receives the signal of display cpu load rate.In step S802, it is judged that whether the interval at cpu load rate place changes (such as being changed over the interval of 51%～75% by the interval of 26%～50%), if judging the interval change at cpu load rate place, then enter step S803；Otherwise, if the interval at cpu load rate place is constant, then return to step S801.In step S803, microcontroller 40 determine according to the interval at cpu load rate place namely will the PWM power supply of switching channel, and these want the voltage of the PWM power supply of switching channel close.Then, in step S804, the switching of passage is performed.Finally, in step S805, being be suitable for the supply voltage of new supply object by the PWM power settings that passage switches, step S805 returns to step S801 after completing.Being different from former control method, this control method is in order to avoid passage exports unsuitable supply voltage to the of short duration period of CPU or GPU, and first will the PWM supply voltage of switching channel close, and exports suitable supply voltage after passage has switched again.
According to above-mentioned each enforcement kenel, therefore the PWM power supply of the part that the power-supply unit of the present invention is supplied can reach that power supply is stable according to or without installing display card or the load factor of CPU, GPU adjust supply to CPU or GPU, reduce element load and temperature, prolongation element service life, improves the advantages such as overclocking usefulness.And although the present invention has enumerated control unit according to representing with or without installing the logical signal and cpu load rate signal that show card or GPU load factor signal to control switch unit and to set the voltage of power-supply unit, but control unit can also switch the object of PWM power supply supply according to such as temperature sensing signal, and therefore the control signal of the present invention is not particularly limited.
Though describing embodiments of the invention above in detail, but the present invention being not limited to the above embodiments, as long as invention main idea described in meeting right, the present invention includes various deformation and change.
Claims (10)
1. a power system, it is characterised in that including:
One power-supply unit, supplies multiple PWM power supplys and the 2nd multiple PWM power supplys；
One final element, containing one first working cell and one second working cell, wherein this first module receives multiple PWM power supplys；
One switch unit, in order to receive the 2nd the plurality of PWM power supply and to switch the 2nd the plurality of PWM power supply supply to this first working cell or this second working cell；And
One control unit, sets the voltage of the 2nd the plurality of PWM power supply according to a control signal and controls the switching action of this switch unit.
2. power system as claimed in claim 1, wherein this first working cell is a central processing unit, and this second working cell is a graphic process unit.
3. power system as claimed in claim 2, wherein this control signal indicates that the logical signal whether being provided with display card, wherein
When there being installation display card, the 2nd PWM power supply that this control unit controls the switching of this switch unit the plurality of is supplied to this central processing unit；Or
When being fitted without display card, the 2nd PWM power supply that this control unit controls the switching of this switch unit the plurality of is supplied to this graphic process unit.
4. power system as claimed in claim 1, wherein this power-supply unit more supplies at least one 3rd PWM power supply to this second working cell, and this control signal indicates that the signal of the second working cell load factor, wherein
When this second working cell load factor is more high, this control unit controls to supply the quantity to this second working cell in the 2nd PWM power supply that the increase of this switch unit is the plurality of.
5. power system as claimed in claim 1, wherein this power-supply unit more supplies at least one 3rd PWM power supply to this second working cell, and this control signal indicates that the signal of the first working cell load factor, wherein
When this first working cell load factor is more high, this control unit controls to supply the quantity to this first working cell in the 2nd PWM power supply that the increase of this switch unit is the plurality of.
6. a method for controlling power supply, including:
There is provided a final element, containing one first working cell and one second working cell；
Supply multiple PWM power supplys to this first working cell and the 2nd multiple PWM power supplys to this second working cell；And
When judging there is this external device of installation, by the 2nd the plurality of PWM power supply switching supply to this first working cell, and set the voltage voltage equal to a plurality of PWM power supply of the 2nd the plurality of PWM power supply.
7. method for controlling power supply as claimed in claim 6, wherein this first working cell is a CPU, and this second working cell is a GPU, and this external device is a display card.
8. a method for controlling power supply, including:
There is provided a final element, containing one first working cell and one second working cell；
Supply multiple PWM power supplys to this first working cell, the 2nd multiple PWM power supplys is in this first working cell and this second working cell and at least one 3rd PWM power supply to this second working cell；
When judging that the second working cell load factor is more big, increase in the 2nd the plurality of PWM power supply and the quantity to this second working cell is provided；And
Set the voltage of the 2nd PWM power supply that this supply object changes.
9. a method for controlling power supply, including:
There is provided a final element, containing one first working cell and one second working cell；
Supply multiple PWM power supplys to this first working cell, the 2nd multiple PWM power supplys is in this first working cell and this second working cell and at least one 3rd PWM power supply to this second working cell；
When judging that the first working cell load factor is more big, increase in the 2nd the plurality of PWM power supply and the quantity to this first working cell is provided；And
Set the voltage of the 2nd PWM power supply that this supply object changes.
10. method for controlling power supply as claimed in claim 8 or 9, wherein this first working cell is a CPU, and this second working cell is a GPU.
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| CN201410834892.5A CN105807879B (en) | 2014-12-29 | 2014-12-29 | Electric system and method for controlling power supply |
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| CN201410834892.5A CN105807879B (en) | 2014-12-29 | 2014-12-29 | Electric system and method for controlling power supply |
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| CN105807879A true CN105807879A (en) | 2016-07-27 |
| CN105807879B CN105807879B (en) | 2019-03-15 |
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| CN108304057A (en) * | 2017-10-09 | 2018-07-20 | 晶晨半导体(上海)股份有限公司 | A kind of merging power supply circuit applied to ARM system |
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