Patent ID: 8570010

Claim:
A multiphase power supply device, comprising: a voltage regulator module coupled to a power source and a microprocessor and providing a multiphase power source to the microprocessor via multiple current paths; a detection module coupled to the voltage regulator module and detecting the temperature of each of the current paths corresponding to the power source with each of the phases; a calculation unit coupled to the detection module, wherein the calculation unit calculates an average temperature according to the temperature of each of the current paths and compares the temperature of each of the current paths with the average temperature to output a comparing result; and a power source processing unit coupled to the calculation unit and the voltage regulator module and adjusting the current value of each of the current paths according to the comparing result, wherein the detection module comprises: a power thermal unit; a first voltage detecting circuit coupled to an input end of the voltage regulator module and the power thermal unit, wherein the power thermal unit detects an input voltage received by the voltage regulator module via the first voltage detecting circuit; and a first current detecting circuit coupled to the input end of the voltage regulator module and the power thermal unit, wherein the power thermal unit detects an input current received by the voltage regulator module via the first current detecting circuit, wherein the first current detecting circuit comprises a capacitor and a first resistor, and the power thermal unit calculates the input current received by the voltage regulator module according to the voltages at two ends of the capacitor of the first current detecting circuit and a resistance of the first resistor of the first current detecting circuit.