Power switching apparatus, power supply unit, and computer system

摘要

A power switching apparatus includes: a first input terminal to which first power is supplied; a second input terminal to which second power is supplied, the second power having a voltage that is lower than a voltage that the first power has; a first output terminal to supply to an outside the first power supplied to the first input terminal; and a second output terminal to supply to the outside the second power supplied to the second input terminal. First switching means manages the supplying of the second power from the first input terminal to the second output terminal. Second switching means manages the supplying of the second power from the second input terminal to the second output terminal. A processor manages the supplies of the first power and the second power using the first and second switching means.

主权项

1. A power switching apparatus coupled to a data processing apparatus that gives instructions to a supply source for supplying power, comprising:
a first input terminal to which first power is supplied at a first voltage; a second input terminal to which second power is supplied at a second voltage lower than the first voltage; a first output terminal configured to supply, to outside of the power switching apparatus, the first power supplied to the first input terminal; a second output terminal configured to supply output power to the outside; a first switch configured to manage a supply of the output power, obtained from the first input terminal, by the second output terminal; a second switch configured to manage a supply of the second power from the second input terminal to the second output terminal; a voltage monitor configured to monitor the second voltage of the second power supplied from the second input terminal to the second output terminal via the second switch; and a processor configured to manage the supply of the output power by the second output terminal using the first and second switches, wherein when the processor receives, from the data processing apparatus, a report of stopping the supply of the first power that was sent a predetermined time period before an instruction to the supply source to stop the supply of the first power has been given,
the processor controls the second switch so as to start the supply of the second power from the second input terminal to the second output terminal as the output power, andafter the second voltage monitored by the voltage monitor reaches a predetermined value, the processor controls the first switch so as to interrupt the supply of the output power from the first input terminal to the second output terminal.