Voltage control unit capable of dynamically regulating electric voltage, effective energy-conserving voltage control unit, method and computer unit

Abstract

The invention relates to an effective energy-saving voltage controlling device capable of dynamically adjusting voltages, and a method and a computer device thereof. The voltage controlling device receives a voltage identification code generated by a central processor, and decides the operation voltage supplied for the central processor according to a set load line, the voltage control device is provided with a load line register group and a write logic, the load line register group is provided with a plurality of registers, values of the registers stand for the set load line, and the write logic changes the values of the registers in the load line register group according to write signals.

Description

technical field [0001] The invention relates to a voltage control device of a central processing unit, in particular to a voltage control device, method and computer device capable of dynamically adjusting voltage and effectively saving energy. Background technique [0002] Today, when the greenhouse effect continues to grow, all countries in the world are committed to fighting against this beast that is enough to endanger the future survival of human beings, and the most effective and direct way is to save energy. In the field of personal computer (PC), the central processing unit (Central Processing Unit, CPU) plays the most important role. Its powerful computing power has brought about the rapid development of technology, but the power consumption of the central processing unit has always been criticized by people. . [0003] In a personal computer, the operating voltage required by the central processing unit is determined according to a voltage identification code (Vol...

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Problems solved by technology

[0004] In addition, manufacturers of central processing units, such as the American company Intel (Intel), have defined a relationship between the voltage and current of the central processing unit, which is called a load line, such as Figure 1B Shown is the load line on the XY-axis plane with the load current and operating voltage as the load line. The meaning represented by this load line is that when the current of the central processing unit 11 changes, the voltage regulation module 12 must change the corresponding voltage, and the load Another important point of the line is that when the central processing unit 11 is operating under a heavy load, its voltage cannot be lower than the minimum voltage (minimum voltage), otherwise the stability of the system cannot be guaranteed.

With the aforementioned power supply method of providing the operating voltage of the central processing unit 11 according to the voltage identification code, if it is desired to reduce or increase the CPU voltage to save energy or improve the performance of the central processing unit, it cannot be automatically adjusted according to the load of the CPU. Adjusting the appropriate CPU voltage often requires the user to manually set the CPU voltage to be lowered or increased. However, a normal system cannot always be under light load or heavy load, which results in poor CPU performance and energy saving It is impossible to take care of both at the same time. For example, in order to increase the performance of the system, the user manually sets the CPU overvoltage, but in the case of idle (idle), the increased CPU voltage is useless, which not only wastes power, but also may cause heat dissipation also worse

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