US6700808B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual input AC and DC power supply having a programmable DC output utilizing a secondary buck converter
Assignee: Igo Inc
•
Filing: 2002-02-08
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Granted: 2004-03-02
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Expires: 2022-02-08
Abstract
Abstract A dual input AC/DC power converter ( 10 ) having dual inputs ( 12, 14 ) adapted to receive both an AC and DC input and provide a selectable DC voltage output ( 16 ) and a second DC output ( 18 ). The dual input AC/DC power converter ( 10 ) comprises a power converter circuit ( 20 ) having an AC-to-DC converter ( 22 ), a DC-to-DC booster converter ( 24 ), a feedback circuit ( 26 ), a filter circuit ( 25 ) and a DC-to-DC buck converter ( 28 ). Advantageously, the power converter ( 10 ) resolves many of system management problems associated with carrying all of the different interface components necessary to power a wide variety of mobile products from either an AC or DC power supply. In addition, the power converter ( 10 ) also advantageously includes dual output voltage terminals ( 16/18 ) to allow for multiple mobile devices of varying power requirements to be powered, simultaneously, by a single converter.
Inventors
- 👤 Gilbert MacDonald
- 👤 Scott Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:26
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/26; G06F1/263; H; H02; H02J; H02J9/00; H02J9/04; H02J9/06; H02J9/061; H02M; H02M1/00; H02M1/10; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/33561; H02M3/338; H02M3/3385; H02M1/0083; H02M1/009
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
112 words
A power converter, comprising: a first circuit converting an AC input voltage to a first predetermined DC output voltage; a second circuit converting a DC input voltage to a second predetermined DC output voltage; a third circuit receiving said first and second predetermined DC voltages and, in response thereto, providing a selectable DC output voltage at a first output, wherein said selectable DC output voltage is established as a function a removable program module; and a fourth circuit coupled to said first output and providing a second DC output voltage at a second output, whereby said second DC voltage output is independent of, and substantially lower than said selectable DC output voltage.
Claim 2
Dependent Claim
112 words
A power converter, comprising: a first circuit converting an AC input voltage to a first predetermined DC output voltage; a second circuit converting a DC input voltage to a second predetermined DC output voltage; a third circuit receiving said first and second predetermined DC voltages and, in response thereto, providing a selectable DC output voltage at a first output, wherein said selectable DC output voltage is established as a function a removable program module; and a fourth circuit coupled to said first output and providing a second DC output voltage at a second output, whereby said second DC voltage output is independent of, and substantially lower than said selectable DC output voltage.
Claim 3
Dependent Claim
41 words
The power converter of claim 1 further comprising a fifth circuit comprising a filter circuit adapted to filter said first and second predetermined DC output voltages and provide a respective first and second filtered DC output voltage at a common node.
Claim 4
Dependent Claim
33 words
The power converter of claim 1 wherein said first circuit comprises a AC-to-DC flyback converter, wherein said AC-to-DC flyback converter is adapted to provide a DC output voltage of between 15VDC and 24VDC.
Claim 5
Dependent Claim
33 words
The power converter of claim 1 wherein said second circuit comprises a DC-to-DC boost converter, wherein said DC-to-DC boost converter is adapted to provide a DC output voltage of between 15VDC and 24VDC.
Claim 6
Dependent Claim
41 words
The power converter of claim 1 wherein said third circuit includes a feedback circuit coupled to said first circuit and said second circuit, said feedback circuit regulating the first and second predetermined DC voltages generated by said first and second circuits.
Claim 7
Dependent Claim
14 words
The power converter of claim 5 wherein said feedback circuit comprises a single loop.
Claim 8
Dependent Claim
36 words
The power converter of claim 1 wherein said fourth circuit comprises a DC-to-DC buck converter providing said second DC output voltage, said DC-to-DC buck converter providing said second DC output voltage of between 3VDC and 15VDC.
Claim 9
Dependent Claim
26 words
The power converter of claim 1 wherein said first and second predetermined DC output voltages are substantially the same and are provided to a common node.
Claim 10
Dependent Claim
46 words
The power converter of claim 1 wherein said first and second predetermined DC output voltages of said respective first and second circuit are established via said removable program module, wherein said removable program module comprises a key adapted to be removably coupled to said power converter.
Claim 11
Dependent Claim
34 words
The power converter of claim 1 wherein said removable program module comprises a key having a resistor, wherein said first and second DC output voltage are a function of the value of said resistor.
Claim 12
Dependent Claim
14 words
The power converter of claim 10 wherein said key establishes an output voltage function.
Claim 13
Dependent Claim
15 words
The power converter of claim 10 wherein said key establishes an output current limiting function.
Claim 14
Dependent Claim
25 words
The power converter of claim 1 wherein said first circuit is adapted to receive an AC input voltage having a range of 90VAC to 265VAC.
Claim 15
Dependent Claim
25 words
The power converter of claim 1 wherein said second circuit is adapted to receive a DC input voltage having a range of 11VDC to 16VDC.
Claim 16
Dependent Claim
24 words
The power converter of claim 1 wherein said first and second predetermined DC output voltages are programmable as a function of the program module.
Claim 17
Dependent Claim
37 words
The power converter of claim 1 wherein said fourth circuit comprises a second removable program module, wherein said second DC output voltage at said second output is a function of said different associated second removable program modules.
Claim 18
Dependent Claim
23 words
The power converter of claim 1 wherein said fifth circuit further includes a protection circuit, said protection circuit provides an over-voltage protection function.
Claim 19
Dependent Claim
29 words
The power converter of claim 1 wherein the first circuit and the second circuit receive their respective AC input voltage and DC input voltages at a common single connector.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2007-03-02 | 2007-09-01 | 2008-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-03-02 | 2011-09-01 | 2012-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-03-02 | 2015-09-01 | 2016-03-02 | $7700.00 | Window Closed / Lapsed |