Multi-node server with power scaling

A multi-node server with power scaling, comprising:

• a power supply unit;
• and
• a plurality of node motherboards electrically connected to said power supply unit and each receiving an operating current from said power supply unit, each of said plurality of node motherboards including:
• a power switch unit that is electrically connected to said power supply unit for receiving the operating current therefrom, and that is configured to generate an output voltage based on the operating current received thereby,
• a protection module that includes
• a comparator unit electrically connected to said power switch unit for receiving the output voltage therefrom, configured to divide the output voltage to generate a first voltage and a second voltage, wherein the first voltage is greater than the second voltage, and configured to generate a first logic signal based on the first voltage and a first reference voltage, and to generate a second logic signal based on the second voltage and a second reference voltage, and
• a logic unit electrically connected to said comparator unit for receiving the first logic signal and the second logic signal therefrom, and configured to receive a setting signal, and to perform a logical operation based on the first logic signal, the second logic signal, and the setting signal in order to generate a power control signal that switches between a power suppressing logic level and a non-power suppressing logic level, and
• a processing module that is electrically connected to said power switch unit for receiving the operating current therefrom, that is electrically connected to said logic unit for receiving the power control signal therefrom, that has a power consumption positively correlated with the operating current, and that is configured to reduce the power consumption of said processing module in order to reduce the operating current when the power consumption of said processing module reaches or exceeds an upper limit causing the first logic signal, the second logic signal and the setting signal to cooperatively prompt the power control signal received by said processing module to be at the power suppressing logic level;
• wherein said processing module includes a step-down voltage converter electrically connected to said power switch unit, and a central processing unit (CPU) electrically connected to said step-down voltage converter and said logic unit.