DVFS POWER SUPPLY SYSTEM AND DVFS POWER SUPPLY CONTROL METHOD

摘要

Disclosed is a DVFS power supply system, which can be applied in the field of integrated circuit control. The system comprises: a chip, a power management unit PMU, a power supply, and a first load module, wherein the PMU comprises a first switched-mode power supply, a first transformer circuit, and a controller. The power supply is connected to an input terminal of the first transformer circuit, an output terminal of the first transformer circuit is connected to an input terminal of the first switched-mode power supply, and an output terminal of the first switched-mode power supply is connected to the first load module. The first transformer circuit is used for lowering a voltage for the input terminal of the first switched-mode power supply. The controller is used for changing a state of the first switched-mode power supply according to a first voltage adjustment instruction of the chip, so as to change an output voltage of the first switched-mode power supply to the first load module. The present invention can increase power supply efficiency by means of lowering the voltage for the input terminal of the first switched-mode power supply.