Electronic device and control method thereof

Abstract

The invention discloses electronic equipment which comprises the components of a first controller; a first power supply and at least two second power supplies, wherein each power supply can be switched between an awakening state and a dormant state, each second power supply has a respective priority, and furthermore each power supply has a respective dormancy threshold voltage and an awakening threshold voltage; an equalizer which equalizes the output current of each of the first power supply and the second power supplies to a first current; and a voltage modulator which performs modulation according to the first current for generating a first voltage; wherein if the dormancy threshold voltages of multiple second power supplies in the second power supplies in the awakened state is higher than the first voltage, a first controller performs controlling according to the priority for making the multiple second power supplies into the dormant state; and if the awakening threshold voltages of each of the first power supply and the second power supplies in the awakened state is lower than the first voltage, the first controller performs controlling according to the priority for making the second power supplies in the dormant state enter the awakening state.

Description

technical field [0001] The invention relates to an electronic device and a control method thereof, in particular to an electronic device capable of improving power supply efficiency in a multi-power supply system and a control method thereof. Background technique [0002] In a server system powered by multiple power supplies, the efficiency of the power supplies usually varies with system power. Taking dual power supply as an example, the system usually sets one of the power supplies as the main power supply, and the other as the slave power supply. When the system is turned on, the main power supply is always in the working state to ensure the basic operation of the system. The system load can be switched between the active state and the sleep state, thereby optimizing the overall efficiency of the two power supplies. However, in the case where the server system is connected to more power supplies, the above-mentioned power supply and state switching mode of the master / sla...

AI Technical Summary

Problems solved by technology

However, since the sleep / working state switching of the two slave power supplies is carried out simultaneously when the conditions are met, when the two slave power supplies enter the sleep state at the same time, the load on the main power supply may be too large, and the system will re-enable the two slave power supplies. The power supply returns to the working state, and after the two slave power supplies return to the working state, the load of the main power supply is too small because the load is evenly distributed by the three power supplies, and the system will make the two slave power supplies enter the dormant state again, and so on, causing the power supply Oscillation of the working state, which leads to the instability of the whole power system and the instability of the efficiency of the power system

Even though the system didn't put two slave power supplies to sleep after the three power supplies shared the load evenly, the power supplies were still less efficient due to the small overload on each power supply distribution

Also, when both slaves go to sleep at the same time, the master may shut down the system due to momentary excessive load

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