Central processing unit (CPU) working voltage control system and control method

Abstract

The invention discloses a CPU working voltage control system, which comprises a power supply device, a power supply control chip and a system controller, wherein the power supply device is used for providing working power for a computer; the power supply control chip is used for converting a voltage provided by the power supply device into the working voltage of the CPU and outputting the working voltage; and the system controller is used for controlling the operation of the power supply control chip and performs information communication with the CPU to acquire the next working voltage of the CPU; and the system controller sends a control signal in advance to the power supply control chip on the basis of the current voltage output according to the next working voltage of the CPU, so that the power supply control chip can regulate the output voltage to the next working voltage of the CPU in advance according to the control signal. The invention also relates to a CPU working voltage control method.

Description

technical field [0001] The invention relates to a CPU working voltage control system and a control method. Background technique [0002] The CPU (Center Processing Unit, central processing unit) is the operation center of the entire computer. When the computer starts to work, the system controller sends instructions to the CPU, and the CPU performs a series of calculations according to the instructions of the system controller. [0003] Usually, the system controller supplies power to the CPU through a power supply circuit. When the CPU load changes, the output voltage of the power supply circuit will also change accordingly. However, when the CPU load changes suddenly, the response of the system will not be able to keep up with the change, resulting in overshoot or undershoot of the power supply circuit, which will affect the stability of the computer system at least, and easily burn out. Bad CPU. At present, the methods to solve the overshoot mainly include increasing t...

AI Technical Summary

Problems solved by technology

However, when the CPU load changes suddenly, the response of the system will not be able to keep up with the change, resulting in overshoot or undershoot of the power supply circuit, which will affect the stability of the computer system at least, and easily burn out. bad cpu

At present, the methods to solve the overshoot mainly include increasing the output capacitance of the power supply circuit or speeding up the feedback compensation speed of the capacitor voltage. However, these methods can only reduce the influence of overshoot and undershoot, but cannot completely eliminate the overshoot and undershoot.

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