Power shelf for computer servers
First Claim
1. A power supply circuit comprising:
- an AC-to-DC circuit configured to convert an alternating current (AC) phase from multi-phase AC inputs to a direct current (DC) at a shared voltage node;
a DC interface to connect with a backup battery unit (BBU);
an asymmetric conductance component having a terminal electrically coupled to the shared voltage node;
a step-up converter electrically coupled, in series, between the DC interface and the asymmetric conductance component;
a bulk capacitor electrically coupled between the shared voltage node and an electric ground to hold power for at least one cycle of the AC phase;
a first DC-DC converter configured to draw power from the shared voltage node to supply power to load in an information technology (IT) equipment rack; and
a second DC-DC converter electrically coupled to the shared voltage node.
2 Assignments
0 Petitions
Accused Products
Abstract
At least one embodiment of this disclosure includes a power shelf for serving a power zone within an IT equipment rack. The power shelf includes: a DC bus configured to provide DC power to rack-mounted equipment within the power zone; multiple pairs of backup battery units (BBUs) and power supply units (PSUs), wherein the multiple pairs include at least a redundant pair, such that voltage and power is supplied through the DC bus sufficient to power the rack-mounted equipment even when one of the multiple pairs is inoperative; and a power circuit, in each PSU of each of the multiple pairs, configured to rectify an AC phase from an external multi-phase AC power source, wherein the power circuit is configured to draw power from one of the BBUs paired to the PSU when the PSU fails to provide power sufficient to power the rack-mounted equipment.
58 Citations
19 Claims
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1. A power supply circuit comprising:
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an AC-to-DC circuit configured to convert an alternating current (AC) phase from multi-phase AC inputs to a direct current (DC) at a shared voltage node; a DC interface to connect with a backup battery unit (BBU); an asymmetric conductance component having a terminal electrically coupled to the shared voltage node; a step-up converter electrically coupled, in series, between the DC interface and the asymmetric conductance component; a bulk capacitor electrically coupled between the shared voltage node and an electric ground to hold power for at least one cycle of the AC phase; a first DC-DC converter configured to draw power from the shared voltage node to supply power to load in an information technology (IT) equipment rack; and a second DC-DC converter electrically coupled to the shared voltage node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of supplying power to load in an information technology (IT) equipment, comprising:
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converting an alternating current (AC) phase from multi-phase AC inputs to a direct current (DC) at a shared voltage node; holding power for at least one cycle of the AC phase at a bulk capacitor electrically coupled between the shared voltage node and an electric ground; interfacing, via a DC interface, with a backup battery unit (BBU); drawing power, via a first DC-DC converter, from the shared voltage node to supply power to load in an IT equipment rack; and drawing auxiliary power, via a second DC-DC converter, from the shared voltage node. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A power supply system comprising:
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an AC-to-DC circuit configured to convert an alternating current (AC) phase from multi-phase AC inputs to a direct current (DC) at a shared voltage node; an asymmetric conductance component having a terminal electrically coupled to the shared voltage node; a first converter electrically coupled between a DC interface and the asymmetric conductance component; a bulk capacitor electrically coupled between the shared voltage node and an electric ground to hold power for at least one cycle of the AC phase; a second converter configured to draw power from the shared voltage node to supply power to load in an information technology (IT) equipment; and a third converter electrically configured to draw auxiliary power from the shared voltage node. - View Dependent Claims (18, 19)
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Specification