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Patent US6297972B1 successfully refreshed from Google Patents.
US6297972B1
Expired / Lapsed
US
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Backup power stage associated with a dual input power supply and method of operating the same
Assignee: Nokia of America Corp
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Filing: 2000-05-10
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Granted: 2001-10-02
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Expires: 2020-05-10
Abstract
Abstract A dual input power supply, a method of operating the power supply and a telecommunications power plant incorporating the power supply or the method. In one embodiment, the power supply includes: (1) a single stage power converter, coupled to an input of the power supply, configured to receive primary power subject to interruption and provide therefrom DC power to a DC bus; (2) an output power stage, coupled to the DC bus, configured to condition the DC power for delivery to an output of the power supply; and (3) a backup power stage, couplable to a backup power source and having an output coupled to the DC bus, configured to provide backup power during the interruption, the single stage power converter configured to restrict a reverse flow of the backup power therethrough during the interruption.
Inventors
- 👤 Qing Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:11
CPC Classifications
H; H02; H02M; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/225; H02J; H02J9/00; H02J9/04; H02J9/06; H02J9/062
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
112 words
A dual input power supply, comprising: a single stage power converter, coupled to an input of said power supply, configured to receive primary power subject to interruption and provide therefrom DC power to a DC bus; an output power stage, coupled to said DC bus, configured to condition said DC power for delivery to an output of said power supply; and a backup power stage comprising a bi-directional DC-DC converter couplable to a backup power source and having an output coupled to said DC bus, configured to provide backup power during said interruption, said single stage power converter configured to restrict a reverse flow of said backup power therethrough during said interruption.
Claim 2
Dependent Claim
112 words
A dual input power supply, comprising: a single stage power converter, coupled to an input of said power supply, configured to receive primary power subject to interruption and provide therefrom DC power to a DC bus; an output power stage, coupled to said DC bus, configured to condition said DC power for delivery to an output of said power supply; and a backup power stage comprising a bi-directional DC-DC converter couplable to a backup power source and having an output coupled to said DC bus, configured to provide backup power during said interruption, said single stage power converter configured to restrict a reverse flow of said backup power therethrough during said interruption.
Claim 3
Dependent Claim
56 words
The power supply as recited in claim 1 wherein said primary power is AC power, said power supply further comprising: an input filter, coupled to said input of said power supply, configured to filter said AC power; and a rectifier, coupled to said input filter, configured to provide rectified power to said single stage power converter.
Claim 4
Dependent Claim
34 words
The power supply as recited in claim 1 wherein said primary power is AC power, said single stage power converter configured to provide power factor correction, isolation and voltage regulation of said primary power.
Claim 5
Dependent Claim
17 words
The power supply as recited in claim 1 wherein said output power stage comprises a DC-AC converter.
Claim 6
Dependent Claim
17 words
The power supply as recited in claim 1 wherein said output power stage comprises a DC-DC converter.
Claim 7
Dependent Claim
26 words
The power supply as recited in claim 5 wherein said output power stage further comprises an output filter coupled to said output of said power supply.
Claim 8
Independent Claim
113 words
A method of operating a dual input power supply to provide primary and backup power, comprising: receiving primary power subject to interruption in a single stage power converter and providing therefrom DC power to a DC bus; conditioning said DC power in an output power stage coupled to said DC bus to develop output power for delivery to an output of said power supply; providing backup power during said interruption with a backup power stage comprising a bi-directional DC-DC converter couplable to a backup power source and having an output coupled to said DC bus; and restricting a reverse flow of said backup power through said single stage power converter during said interruption.
Claim 9
Independent Claim
113 words
A method of operating a dual input power supply to provide primary and backup power, comprising: receiving primary power subject to interruption in a single stage power converter and providing therefrom DC power to a DC bus; conditioning said DC power in an output power stage coupled to said DC bus to develop output power for delivery to an output of said power supply; providing backup power during said interruption with a backup power stage comprising a bi-directional DC-DC converter couplable to a backup power source and having an output coupled to said DC bus; and restricting a reverse flow of said backup power through said single stage power converter during said interruption.
Claim 10
Dependent Claim
41 words
The method as recited in claim 7 wherein said primary power is AC power, said method further comprising: filtering said AC power to develop filtered AC power; and rectifying said filtered AC power for delivery to said single stage power converter.
Claim 11
Dependent Claim
33 words
The method as recited in claim 7 wherein said primary power is AC power, said single stage power converter configured to provide power factor correction, isolation and voltage regulation of said primary power.
Claim 12
Dependent Claim
17 words
The method as recited in claim 7 , wherein said conditioning is performed by a DC-AC converter.
Claim 13
Dependent Claim
16 words
The method as recited in claim 7 wherein said conditioning is performed by a DC-DC converter.
Claim 14
Dependent Claim
19 words
The method as recited in claim 7 wherein said conditioning comprises filtering said output power with an output filter.
Claim 15
Dependent Claim
129 words
A telecommunications power plant, comprising: a backup power source; a dual input power supply having an input and an output, including: a single stage power converter, coupled to said input that receives primary power subject to interruption and provides therefrom DC power to a DC bus, an output power stage, coupled to said DC bus, that conditions said DC power for delivery to said output of said power supply, and a backup power stage comprising a bi-directional DC-DC converter, coupled to said backup power source and having an output coupled to said DC bus, that provides backup power during said interruption, said single stage power converter restricting a reverse flow of said backup power therethrough during said interruption; and telecommunications equipment coupled to said output of said power supply.
Claim 16
Dependent Claim
129 words
A telecommunications power plant, comprising: a backup power source; a dual input power supply having an input and an output, including: a single stage power converter, coupled to said input that receives primary power subject to interruption and provides therefrom DC power to a DC bus, an output power stage, coupled to said DC bus, that conditions said DC power for delivery to said output of said power supply, and a backup power stage comprising a bi-directional DC-DC converter, coupled to said backup power source and having an output coupled to said DC bus, that provides backup power during said interruption, said single stage power converter restricting a reverse flow of said backup power therethrough during said interruption; and telecommunications equipment coupled to said output of said power supply.
Claim 17
Dependent Claim
50 words
The power plant as recited in claim 13 wherein said primary power is AC power, said power supply further comprising: an input filter, coupled to said input, that filters said AC power; and a rectifier, coupled to said input filter, that provided rectified power to said single stage power converter.
Claim 18
Dependent Claim
32 words
The power plant as recited in claim 13 wherein said primary power is AC power, said single stage power converter providing power factor correction, isolation and voltage regulation of said primary power.
Claim 19
Dependent Claim
17 words
The power plant as recited in claim 13 wherein said output power stage comprises a DC-AC converter.
Claim 20
Dependent Claim
17 words
The power plant as recited in claim 13 wherein said output power stage comprises a DC-DC converter.
Claim 21
Dependent Claim
27 words
The power plant as recited in claim 17 wherein said output power stage further comprises a n output filter coupled to said output of said power supply.
References Cited (Backward Citations)
US4709318A
Cited
US5289046A
Cited
US5982645A
Cited
US6069412A
Cited
US5633539A
Cited
US5910689A
Cited
US5994794A
Cited
US5982652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-10-01 | 2005-04-02 | 2005-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-10-01 | 2009-04-02 | 2009-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-10-01 | 2013-04-02 | 2013-10-02 | $7700.00 | Window Closed / Lapsed |