Power-on control circuit

A power-on control circuit comprising:

• a plurality of power supplies, each of the power supplies comprising a power good pin and an enable pin, each of the power good pins being to output a power good signal, each of the enable pins being to receive an enable signal, when the enable pin of one of the power supplies receiving an enable signal, the one of the power supplies being powered on, and when one of the power supplies being powered on successfully, the power good pin of the one of the power supplies outputting a power good signal;
• and
• a control chip comprising a plurality of input ports and a plurality of output ports, each of the input ports corresponding to one of the output ports, each of the input ports being connected to the power good pin of a corresponding one of the power supplies to receive a power good signal from the one power supply, and its corresponding output port being connected to the enable pin of the one power supply to output an enable signal to the one power supply;
• the control chip being to control one of the output ports to output an enable signal to the enable pin of one of the power supplies to power on the one power supply, and then control another one of the output ports to output an enable signal to the enable pin of another one of the power supplies to power on the another power supply after the input port corresponding to the one output port has received a power good signal.