System and method for reducing inrush current in a blade server
AssigneeDell Products L.P.
InventorsJil M. Bobbitt, Zhan Mei, Dung T. Nguyen, Jason D. Tunnell
Life of this patent
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Abstract
A system and method for reducing inrush current in an information handling system includes charging a pre-charge circuit with an elongated pin. The information handling system includes a midplane with at least one power source connector and multiple blade connectors able to connect to blade servers. Each blade connector has an elongated pin for supplying power to a blade server. Each blade server has a power connector for receiving the elongated pin and an integrated pre-charge circuit including a resistor and capacitor.
Claims20
An information handling system comprising:
- a midplane having a plurality of blade connectors, each blade connector operable to interface with a blade server;
- the midplane further having at least one power source connector;
- each blade connector having an elongated pin for supplying power to an associated blade server;
- and
- at least one blade server having a power connector for receiving the elongated pin and an integrated pre-charge circuit comprising a power resistor and a capacitor, the pre-charge circuit in operative communication with the power connector.
An integrated pre-charge circuit for a blade server comprising:
- a pin connector having a power connector operable to receive an elongated pin associated with a midplane blade connector, the elongated pin operable to supply power at an anticipated voltage to the pre-charge circuit;
- a power resistor associated with the power connector, the power resistor sized based upon the anticipated voltage;
- and
- a capacitor associated with the power resistor operable to filter the power received by the power connector.
A method to reduce inrush current in a multi-blade server, the method comprising:
- providing a blade connector comprising an elongated pin for transferring power and a plurality of data transfer pins operable to communicate power and data from a midplane to an associated blade server;
- providing a blade server having a pre-charge circuit, the pre-charge circuit having a pin connector, a resistor, and a capacitor;
- providing power to the blade connector;
- positioning a blade server in a first position such that the only elongated pin contacts a power receiving portion of the power connector and provides power to the pre-charge circuit;
- and
- positioning blade server in a second position such that the remaining pins contact the pin connector.
Dependencies are inferred from the claim text.