CN102681639A - Power supply system and method for central processing unit - Google Patents

Abstract

The invention provides a power supply system of a central processing unit, which comprises a mainboard and an external circuit board. The mainboard further comprises a central processing unit, a first power supply module, a first connecting part and a control unit. The first power module provides a first current to the CPU. The control unit is coupled between the first connecting part and the central processing unit. The external circuit board further comprises a second connecting part and a second power supply module. The second connecting part is used for connecting the first connecting part. The second power module is coupled to the second connection portion for providing a second current. When the second connecting part is electrically connected with the first connecting part, the control unit transmits the second current to the central processing unit.

Description

Power supply system and method for central processing unit

technical field

The invention relates to a power supply system, in particular to a central processing unit power supply system.

Background technique

The motherboard in a personal computer or a notebook computer usually provides an independent power supply for the CPU, and for design and cost considerations, the independent power supply is usually provided according to the specifications of the CPU supported by the motherboard. Basic and adequate power supply. For example, if the power specification of the central processing unit is 95 watts, only one 95 watt independent power supply is designed on the motherboard for use by the central processing unit. However, if the user wants to overclock the CPU, a higher voltage or current must be used, and the original independent power supply cannot provide the CPU for overclocking. If the specification of the independent power supply designed on the motherboard is designed based on the maximum power demand required by the CPU for overclocking, if the user does not overclock the CPU, the excessively high power supply design will not only increase the The manufacturer's cost may also cause unnecessary power consumption to the computer.

Contents of the invention

The purpose of the present invention is to provide a power supply system for a central processing unit, which can adjust the voltage or current value received by the central processing unit according to the user's usage situation.

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a power supply system for a central processing unit, including a main board and an external circuit board. The motherboard also includes a CPU, a first power supply module, a first connection part and a control unit. The first power supply module provides a first current to the central processing unit. The control unit is coupled between the first connection part and the central processing unit. The external circuit board also includes a second connecting portion and a second power module. The second connecting part is used for connecting the first connecting part. The second power module is coupled to the second connection part and used for providing a second current. When the second connection part is electrically connected to the first connection part, the control unit transmits the second current to the central processing unit.

Another embodiment of the present invention provides a power supply method for a central processing unit, which is suitable for a central processing unit in a computer, and the central processing unit receives a first current provided by a first power supply module on a motherboard or a first voltage. This includes: detecting whether a first connecting portion of the motherboard is connected to an external circuit board; detecting a utilization rate of the central processing unit on the motherboard; detecting a temperature of the motherboard; when detecting the first When the connecting part is connected to the external circuit board, a second current or a second voltage provided by the external circuit board is transmitted to the central processing unit according to the usage rate and the temperature.

Description of drawings

FIG. 1 is a schematic diagram of an embodiment of a central processing unit power supply system according to the present invention.

FIG. 2 is a schematic diagram of another embodiment of a central processing unit power supply system according to the present invention.

FIG. 3 is a flow chart of an embodiment of a power supply method for a CPU according to the present invention.

[Description of main component labels]

111～central processing unit 112～the first power supply module

113～detection unit 114～switch device

115～the first connector 121～the second connector

122～second power supply module 211～central processing unit

212～the first power supply module 213～control unit

214～the first connector 215～the first detection unit

216～second detection unit 217～third detection unit

221～second connector 222～second power module

Detailed ways

The aforementioned and other technical content, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

FIG. 1 is a schematic diagram of an embodiment of a central processing unit power supply system according to the present invention. The power supply system of the CPU in FIG. 1 can be applied in a personal computer or a notebook computer. The motherboard 11 includes a CPU 111 , a first power module 112 , a detection unit 113 , a switch unit 114 and a first connector 115 . The first power module 112 provides a first current to the central processing unit 111, wherein the first power module 112 may include a single-phase power module, a three-phase power module or a multiple power module. The detection unit 113 is coupled to the first connector 115 for detecting whether the first connector 115 is connected to other connectors, such as the second connector 121 of the external circuit board 12 . If it is detected that the first connector 115 is electrically connected to the second connector 121 , the detection unit 113 will output a signal to the switch unit 114 so that the switch unit 114 is turned on. The external circuit board 12 also includes a second power module 122 capable of outputting a second current, wherein the second power module 122 may include a single-phase power module, a three-phase power module or a multiple power module. When the switch unit 114 is turned on, the second current provided by the second power module 122 is also input to the CPU 111 . In this embodiment, the CPU 111 may include a power input terminal coupled to the first power module 112 and the switch unit 114 . When the switch unit 114 is turned on, the power input end can simultaneously receive a first current from the first power module 112 and a second current from the external circuit board 12 .

In this embodiment, the first current module 112 and the second power module 122 utilize a pulse width modulation (Puse Width Modulation, PWM) DC power conversion design to provide single or multiple power supplies to the CPU.

FIG. 2 is a schematic diagram of another embodiment of a central processing unit power supply system according to the present invention. The power supply system of the CPU in FIG. 2 can be applied in a personal computer or a notebook computer. The motherboard 21 includes a CPU 211 , a first power module 212 , a control unit 213 , a first connector 214 , a first detection unit 215 , a second detection unit 216 and a third detection unit 217 . The main board 21 is a main board used by a desktop computer or a notebook computer, and may also include a display card slot or a memory slot to connect a display card or a memory, and other components on the main board are known to those skilled in the art , which will not be described here.

The first power module 212 provides a first current to the central processing unit 211, wherein the first power module 212 may include a single-phase power module, a three-phase power module or a multiple power module. The first detection unit 213 is coupled to the first connector 214 for detecting whether the first connector 214 is connected to other connectors, such as the second connector 221 of the external circuit board 22 . In this embodiment, the first connector 214 and the second connector 221 can be connected directly or through a connection cable. If it is detected that the first connector 214 is electrically connected to the second connector 221, the first detection unit 215 will output a first detection signal to the control unit 213, and the control unit 213 can make the external circuit according to the first detection signal The board 22 is electrically connected to the CPU 211 , and transmits the second current provided by the second power module 222 on the external circuit board 22 to the CPU 211 . The control unit 213 may also apply an identification mechanism to identify the type of the external circuit board 22 according to the first detection signal. In this embodiment, the second power module 222 may include a single-phase power module, a three-phase power module or a multiple power module.

The second detection unit 216 is used for detecting a usage rate of the CPU 211 , and if it is detected that the usage rate of the CPU 211 is higher than a predetermined value, the second detection unit 216 sends a second detection signal to the control unit 213 . The third detection unit 217 is used to detect the temperature of the motherboard 21 , and if the temperature of the motherboard 21 is higher than a predetermined temperature, the third detection unit 217 sends a third detection signal to the control unit 213 . In this embodiment, the third detecting unit 217 is described by taking detecting the temperature of the motherboard 21 as an example, but the present invention is not limited thereto. The third detection unit 217 can also be used to detect a temperature inside the computer host or the temperature of the central processing unit 211, and then the control unit 213 determines whether to transmit the second current provided by the second power module 222 to the CPU 211.

The control unit 213 can determine whether to transmit the second current provided by the second power module 222 on the external circuit board 22 to the CPU 211 according to the first detection signal, the second detection signal and the third detection signal. For example, although the external circuit board 22 has been electrically connected to the main board 21, the control unit 213 judges that the utilization rate of the central processing unit 211 is not higher than a predetermined value at this time, and the temperature of the main board 21 is not overheated, so The control unit 213 may still prevent the second current provided by the external circuit board 22 from being transmitted to the CPU 211 . In another situation, the temperature of the main board 21 is not higher than the predetermined temperature, but the utilization rate of the central processing unit 211 is higher than the predetermined value. At this time, the control unit 213 can set the second temperature provided by the external circuit board 22. The current is sent to the CPU 211 so that the CPU 211 can operate at a higher clock speed or in a more efficient mode.

Although this embodiment is described with a central processing unit as an example, the power supply system provided by this embodiment can also be applied to a graphics card in a computer or other components with similar requirements.

FIG. 3 is a flow chart of an embodiment of a power supply method for a CPU according to the present invention. In step S31, first detect whether the motherboard is connected to an external circuit board. If it is not detected that the external circuit board is connected, it is detected at regular intervals or continuously whether the external circuit board is connected. If it is detected that no external circuit board is connected, skip to step S32, and a detection device detects that the temperature of the main board at this time is suitable for being greater than a predetermined temperature. If so, then jump to step S34, a control unit on the motherboard will send a second current or voltage provided by the external circuit board to the central processing unit. If not, then step S33 is performed to judge whether the utilization rate of the central processing unit is greater than a predetermined value at this time. If the utilization rate of the central processing unit is not greater than a predetermined value, then get back to step S32. If the utilization rate of the central processing unit is greater than a predetermined value, step S34 is executed, and a second current or voltage provided by the external circuit board is transmitted to the central processing unit through the control unit.

But the above-mentioned ones are only preferred embodiments of the present invention, and should not limit the scope of the present invention with this, that is, all simple equivalent changes and modifications made according to the scope of the claims of the present invention and the contents of the description of the invention, All still belong to the scope covered by the claims of the present invention. In addition, any embodiment of the present invention or the scope of claims does not necessarily achieve all the objects or advantages or features disclosed in the present invention. In addition, the abstract and the title are only used to assist in the search of patent documents, and are not used to limit the scope of the claims of the present invention.

Claims (9)

1. the electric power system of a central processing unit comprises:

One motherboard comprises:

One central processing unit;

One first power module provides one first electric current to this central processing unit;

One first connecting portion; And

One control module is coupled between this first connecting portion and this central processing unit; And

One external circuits plate comprises:

One second connecting portion is in order to connect this first connecting portion; And

One second source module couples this second connecting portion, and in order to one second electric current to be provided, wherein when this second connecting portion electrically connected this first connecting portion, this control module sent this second electric current to this central processing unit.

2. the electric power system of central processing unit according to claim 1, wherein this motherboard also comprises one first pick-up unit, couples this first connecting portion, in order to detect this second connecting portion whether this first connecting portion of connection is arranged.

3. the electric power system of central processing unit according to claim 1; Wherein this motherboard also comprises one second pick-up unit; Couple this central processing unit; In order to detect a utilization rate of central processing unit, when this utilization rate was higher than a predetermined value, control module just can send this second electric current to this central processing unit.

4. the electric power system of central processing unit according to claim 1; Wherein this motherboard also comprises one the 3rd pick-up unit; In order to detect a temperature of this motherboard, when this temperature was higher than a predetermined temperature, control module just can send this second electric current to this central processing unit.

5. the electric power system of central processing unit according to claim 4; This motherboard also comprises one second pick-up unit; Couple this central processing unit; In order to detect a utilization rate of central processing unit, wherein when this temperature was lower than this predetermined temperature and this utilization rate and is higher than a predetermined value, control module sent this second electric current to this central processing unit.

6. the method for supplying power to of a central processing unit is used for the central processing unit in the computing machine, and this central processing unit receives one first electric current or one first voltage that one first supply module on the motherboard provides, and this method comprises:

Whether one first connecting portion that detects this motherboard has the external circuits plate of connection;

Detect a utilization rate of this central processing unit on this motherboard;

Detect a temperature of this motherboard;

When detecting this this external circuits plate of first connecting portion connection, send one second electric current or one second voltage that this external circuits plate provides to this central processing unit according to this utilization rate and this temperature.

7. the method for supplying power to of central processing unit according to claim 6 also comprises:

When this utilization rate was higher than a predetermined value, this second electric current or this second voltage that this external circuits plate provides just were transmitted to this central processing unit.

8. the method for supplying power to of central processing unit according to claim 6 also comprises:

When this temperature was higher than a predetermined temperature, this second electric current or this second voltage that this external circuits plate provides just were transmitted to this central processing unit.

9. the method for supplying power to of central processing unit according to claim 6 also comprises:

When this temperature was lower than this predetermined temperature and this utilization rate and is higher than a predetermined value, this second electric current or this second voltage that this external circuits plate provides were transmitted to this central processing unit.

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