POWER SUPPLY UNIT, POWER SUPPLY NETWORK, AND OPERATION METHODS THEREOF

In certain aspects, a power supply unit includes a direct current (DC) power supply circuit and a regulation control circuit coupled to the DC power supply circuit. The DC power supply circuit is configured to provide an output voltage and an output current at an output port. The regulation control circuit is configured to generate a regulation control signal based at least in part on a measured voltage value of the output voltage and a measured current value of the output current at the output port. The DC power supply circuit is further configured to, based on the regulation control signal, regulate at least one of the output voltage to have a target voltage value or the output current to have a target current value.