Power supply and load allocation method thereof

A power supply, comprising:

• a conversion circuit, configured to convert a DC power into a first output power, and the conversion circuit coupled to a critical load through a first output terminal so as to provide the first output power to supply power to the critical load through the first output terminal,
• an auxiliary power circuit, configured to convert the DC power into a first auxiliary power, and
• an output control circuit, coupled to the first output terminal and a second output terminal, and the second output terminal coupled to a non-critical load,
• wherein when the first output terminal has a redundancy requirement, the output control circuit is configured to connect the first output terminal and the auxiliary power circuit so that the first auxiliary power provided by the auxiliary power circuit is provided to the first output terminal through the output control circuit.

A load allocation method of a power supply, the power supply configured to supply power to a critical load through a first output terminal, and supply power to a non-critical load through a second output terminal, the method comprising steps of:

• controlling a conversion circuit to convert a DC power into a first output power, and controlling an auxiliary power circuit to convert the DC power into a first auxiliary power, and
• (a1) determining that the conversion circuit normally operates, and the first output power still has a margin,
• (a2) connecting the first output terminal and the second output terminal so that the conversion circuit provides a second auxiliary power to the second output terminal, and
• (b1) determining that the conversion circuit normally operates, and the first output power has no margin, and
• (b2) connecting the second output terminal and the auxiliary power circuit so that the auxiliary power circuit provides the first auxiliary power to the second output terminal.