US5955870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-mode low power voltage regulator
Assignee: Intel Corp
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Filing: 1997-09-29
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Granted: 1999-09-21
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Expires: 2017-09-29
Abstract
Abstract A voltage regulator that has a first mode circuit having a gating device and an amplifier, the gating device with a first input for receiving a first voltage, a second input, and an output. The amplifier is configured to receive a reference voltage and the gating device output as the second input. The gating device is configured to receive an amplifier output at said second input and responsive thereto to couple the first voltage with the gating device output when the gating device output is within a voltage range. The voltage regulator also has a second mode circuit having a voltage divider with an output. The voltage divider is configured to received the first voltage and supply a second voltage to the voltage divider output. The invention also relates to an integrated circuit having a power bus line and at least two voltage regulator cells coupled to the power bus line.
Inventors
- 👤 Raj Nair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:44
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/575
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
113 words
A voltage regulator, comprising: a first mode circuit having a gating device and an amplifier, said gating device with a first input for receiving a first voltage, a second input and an output, said amplifier configured to receive a reference voltage and said gating device output, said gating device configured to receive an amplifier output at said second input and responsive thereto to couple said first voltage with said gating device output when said gating device output is within a voltage range; and a second mode circuit having a voltage divider with an output, said voltage divider configured to receive said first voltage and supply a second voltage to said voltage divider output.
Claim 2
Dependent Claim
113 words
A voltage regulator, comprising: a first mode circuit having a gating device and an amplifier, said gating device with a first input for receiving a first voltage, a second input and an output, said amplifier configured to receive a reference voltage and said gating device output, said gating device configured to receive an amplifier output at said second input and responsive thereto to couple said first voltage with said gating device output when said gating device output is within a voltage range; and a second mode circuit having a voltage divider with an output, said voltage divider configured to receive said first voltage and supply a second voltage to said voltage divider output.
Claim 3
Dependent Claim
17 words
The voltage regulator of claim 1, wherein said voltage regulator is configured on an integrated circuit chip.
Claim 4
Dependent Claim
33 words
The voltage regulator of claim 1, wherein said gating device is configured to switch off the first voltage to said gating device output when said first voltage is greater than said reference voltage.
Claim 5
Dependent Claim
16 words
The voltage regulator of claim 1, wherein said second voltage is less than said first voltage.
Claim 6
Dependent Claim
16 words
The voltage regulator of claim 1, wherein said first voltage is greater than said reference voltage.
Claim 7
Dependent Claim
28 words
The voltage regulator of claim 1, wherein said second mode circuit supplies said second voltage to said voltage divider output in the absence of a significant current flow.
Claim 8
Dependent Claim
14 words
The regulator of claim 1, wherein said gating device is a series pass device.
Claim 9
Dependent Claim
51 words
The regulator of claim 1, said gating device is a first gating device, further comprising a third mode circuit having a second gating device with an output, said second gating device configured to receive said first voltage and responsive thereto to couple said first voltage with said second gating device output.
Claim 10
Dependent Claim
157 words
An on-die voltage regulator comprising: a first mode circuit including a first gating device having a first input for receiving a first voltage, a second input and an output, an amplifier having a first input for receiving a reference voltage, a second input for receiving an output voltage from said gating device, and an amplifier output, said gating device configured to receive said amplifier output as said second input and responsive thereto to couple said first voltage with said gating device output; a second mode circuit having a voltage divider with an output, said voltage divider configured to receive said first voltage, step the first voltage to a second voltage, and supply the second voltage to said voltage divider output; and a third mode circuit having a second gating device with an output, said second gating device configured to receive said first voltage and responsive thereto to couple said first voltage with said second gating device output.
Claim 11
Dependent Claim
157 words
An on-die voltage regulator comprising: a first mode circuit including a first gating device having a first input for receiving a first voltage, a second input and an output, an amplifier having a first input for receiving a reference voltage, a second input for receiving an output voltage from said gating device, and an amplifier output, said gating device configured to receive said amplifier output as said second input and responsive thereto to couple said first voltage with said gating device output; a second mode circuit having a voltage divider with an output, said voltage divider configured to receive said first voltage, step the first voltage to a second voltage, and supply the second voltage to said voltage divider output; and a third mode circuit having a second gating device with an output, said second gating device configured to receive said first voltage and responsive thereto to couple said first voltage with said second gating device output.
Claim 12
Dependent Claim
35 words
The regulator of claim 9, further comprising a third gating device coupled to said first gating device input, wherein said third gating device is switched off when said said second gating device is switched on.
Claim 13
Dependent Claim
28 words
The voltage regulator of claim 9, wherein said second mode circuit supplies said first voltage to said voltage divider output in the absence of a significant current flow.
Claim 14
Dependent Claim
165 words
An integrated circuit comprising: a power bus line; and at least two (2) voltage regulator cells formed in a chip and coupled to said power bus line, wherein each of said voltage regulator cells comprises: a first mode circuit having a gating device and an amplifier, said gating device with a first input for receiving a first voltage and a switch gating output, said amplifier configured to receive a reference voltage and said gating device output, said gating device configured to receive an amplifier output and responsive thereto to couple said first voltage with said gating device output when said gating device output is within a voltage range; and a second mode circuit having a voltage divider with an output, said voltage divider configured to receive said first voltage and supply a second voltage to said voltage divider output, a power bus line formed in a chip; and at least two voltage regulator cells formed in a chip and coupled to said power bus line.
Claim 15
Dependent Claim
165 words
An integrated circuit comprising: a power bus line; and at least two (2) voltage regulator cells formed in a chip and coupled to said power bus line, wherein each of said voltage regulator cells comprises: a first mode circuit having a gating device and an amplifier, said gating device with a first input for receiving a first voltage and a switch gating output, said amplifier configured to receive a reference voltage and said gating device output, said gating device configured to receive an amplifier output and responsive thereto to couple said first voltage with said gating device output when said gating device output is within a voltage range; and a second mode circuit having a voltage divider with an output, said voltage divider configured to receive said first voltage and supply a second voltage to said voltage divider output, a power bus line formed in a chip; and at least two voltage regulator cells formed in a chip and coupled to said power bus line.
Claim 16
Dependent Claim
67 words
The integrated circuit of claim 12, said gating device of each of said voltage regulator cells is a first gating device and wherein each of said voltage regulator cells further comprises a third mode circuit having a second gating device with an output, said second gating device configured to receive said first voltage and responsive thereto to couple said first voltage with said second gating device output.
References Cited (Backward Citations)
US4074182A
Cited
US4298835A
Cited
US4731574A
Cited
US5570004A
Cited
US5563501A
Cited
US5686821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-09-20 | 2003-03-22 | 2003-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-20 | 2007-03-22 | 2007-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-20 | 2011-03-22 | 2011-09-21 | $7700.00 | Window Closed / Lapsed |