| 摘要 |
A power supply system, which includes a PWM power supply and a power-consuming unit, and the PWM power supply is connected to the power-consuming unit to supply power to the power-consuming unit. The power supply system further includes a power supply protocol management apparatus. The power supply protocol management apparatus is connected to the power-consuming unit through a transmission bus to acquire a VID protocol of the power-consuming unit, and acquire a VID code conversion table matching the VID protocol. The power supply protocol management apparatus converts a VID code output by the power-consuming unit on the basis of the VID protocol into a required voltage of the power-consuming unit according to the VID code conversion table, compares the required voltage with a voltage at an output end of the PWM power supply to generate a feedback voltage value, and transmits the generated feedback voltage value to the PWM power supply, and the PWM power supply adjusts its output voltage according to the feedback voltage value so that its output voltage equals the required voltage of the power-consuming unit. In the power supply system provided in the embodiments of the present invention, by searching a pre-stored VID protocol for a VID protocol which corresponds to or matches the VID protocol of the power-consuming unit, power-consuming units having different VID protocols use a same power supply system, thereby improving the universality of the power system and expanding an application scope.
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