Abstract: The present invention discloses a power supply method having power management mechanism that includes the steps outlined below. Power request information of power requesting devices is retrieved to generate a to-be-powered device list and a requested power. Whether a current requesting device satisfy a power stable criteria and a power sufficient criteria is determined, The power stable criteria is satisfied when the power requesting devices each having a priority higher than that of the current requesting device all operate in a powered mode or when the power requesting devices that operate in the powered mode enter a stable operation status. The power sufficient criteria is satisfied when a stable system remained power of a power supply system is not smaller than an individual requested power of the current requesting device. When the criteria are satisfied, the current requesting device is operated in the powered mode to update the requested power.

Abstract: The present invention discloses a power supply method having power management mechanism that includes the steps outlined below. Power request information of power requesting devices is retrieved to generate a to-be-powered device list and a requested power. Whether a current requesting device satisfy a power stable criteria and a power sufficient criteria is determined, The power stable criteria is satisfied when the power requesting devices each having a priority higher than that of the current requesting device all operate in a powered mode or when the power requesting devices that operate in the powered mode enter a stable operation status. The power sufficient criteria is satisfied when a stable system remained power of a power supply system is not smaller than an individual requested power of the current requesting device. When the criteria are satisfied, the current requesting device is operated in the powered mode to update the requested power.