Power supply device

• US 20070208958A1
• Filed: 02/07/2007
• Published: 09/06/2007
• Est. Priority Date: 03/02/2006
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Wakamatsu, Yoshinori
• Granted Patent: US 7,814,347 B2
• Time in Patent Office: Days
• US Class Current: 713/300
• CPC Class Codes: G06F 11/2015 Redundant power supplies power supply failure G06F1/30
• CPC Class Codes: G06F 11/2089 Redundant storage control functionality

Abstract

A power supply device which comprises at least two power supply units and the same number of adapter cards, each of the adaptor cards comprising a number of hot swap circuits at least equal to a number of the power supply units is disclosed. In the power supply device power from each of the at least two power supply units is supplied to a respective one of the hot swap circuits within each of the adapter cards.

Claims

1. A power supply device comprising

at least two power supply units and

a same number of adapter cards, each of said adaptor cards comprising a number of hot swap circuits at least equal to a number of said power supply units, wherein power from each of said at least two power supply units is supplied to a respective one of said hot swap circuits within each of said adapter cards.

2. The power supply device according to claim 1, further comprising

a backboard to which each of said at least two supply units and each of said adaptor cards is connected via a respective connector.

3. The power supply device according to claim 2, further comprising

power supply lines on said backboard, wherein each of said power supply lines starts from each of said at least two power supply units and branches to each of said adaptor cards.

4. The power supply device according to claim 3, wherein an output of each of said hot swap circuits within each of said adapter cards is connected to a respective diode and thereafter connected with each other.

5. A disk enclosure device comprising said power supply device according to claim 1.

6. A disk enclosure device comprising said power supply device according to claim 2.

7. A disk enclosure device comprising said power supply device according to claim 3.

8. A disk enclosure device comprising said power supply device according to claim 4.

9. A power supply method comprising

supplying power from each of at least two power supply units to a respective one of a number of hot swap circuits within each of a number of adapter cards, wherein the number of hot swap circuits within an adaptor card is greater than or equal to the number of power supply units and the number of adaptor cards is equal to the number of power supply units.

10. The power supply method according to claim 9, wherein each of said at least two of power supply units and each of said adaptor cards is connected to a back board via a respective connector.

11. The power supply method according to claim 10, wherein said backboard includes power lines, each of said power supply lines starting from each of said at least two power supply units and branching to each of said adaptor cards.

12. The power supply method according to claim 11, each of said hot swap circuits within each of said adaptor cards is connected to a respective diode and thereafter connected with each other.