Design method for achieving CPU (Central Processing Unit) power supply phase dynamic adjustment

Abstract

The invention discloses a design method for achieving CPU power supply phase dynamic adjustment. According to the method, a CPU circuit comprises three sections of a current detection section, a control section and a CPU power supply section, wherein the current detection section is used for detecting CPU power supply current, the control section is used for controlling the opening and closing of each phase circuit, and the power supply section is used for supplying corresponding current and voltage to a working CPU. The conversion efficiency of the power supply circuit is related to load, namely the greater the load is, the higher the conversion efficiency is, and the conversion efficiency of the power supply circuit is improved by reducing the number of power supply phases and increasing the load of the remaining phases when the CPU is at low load. The design method for achieving CPU power supply phase dynamic adjustment achieves the purpose of energy saving of a main board through dynamic adjustment of the number of the CPU power supply phases by changing multi-phase power supply of the CPU power supply circuit into single-phase or double-phase power supply when the CPU is in low-load operation for improving the conversion efficiency of the CPU power supply circuit.

Description

technical field [0001] The present invention relates to the field of computer energy-saving design, in particular to a design method for realizing the dynamic adjustment of CPU power supply phases, which is mainly used for CPU power supply energy-saving design of mainboards. Single-phase or dual-phase power supply increases the conversion efficiency of the power supply circuit. Background technique [0002] The CPU is one of the important components of the computer motherboard. The CPU is generally composed of a logic operation unit, a control unit and a storage unit. The main energy-consuming units of the CPU are the operation unit and the control unit. The CPU is one of the most energy-consuming devices on the computer motherboard, and it is also one of the important devices that determine the power consumption of the motherboard. Therefore, the CPU power supply design is very important in the motherboard design process. [0003] The CPU power supply circuit is generally...

AI Technical Summary

Problems solved by technology

[0003] The CPU power supply circuit is generally designed for three-phase or four-phase power supply circuits according to the maximum power of the CPU, but in most cases the CPU workload is about 30%, which is not full load, so the CPU power supply part cannot work efficiently

The conversion efficiency of the power supply circuit is related to the load. The greater the load, the higher the conversion efficiency. Since the CPU works in low load mode most of the time, the conversion efficiency of the CPU power supply circuit is low, resulting in a large standby power consumption of the motherboard.

For notebook computers, when the notebook computer is powered by a lithium battery, the conversion efficiency of the CPU power supply circuit is low, which indirectly shortens the standby time of the notebook when it is powered by the battery.

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