US5448156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low power voltage regulator
Assignee: Texas Instruments Inc
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Filing: 1993-09-02
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Granted: 1995-09-05
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Expires: 2013-09-02
Abstract
Abstract A circuit is designed for regulating a power supply voltage. A regulator circuit (26) compares a power supply sample voltage VAR 1 (34) and a reference voltage VREF (20) and corrects the power supply voltage VAR 0 (30). The regulator circuit rate for correcting the power supply voltage varies with the regulator circuit power consumption. A circuit (160), responsive to a control signal (164), changes the regulator circuit power consumption.
Inventors
- 👤 Ching-Yuh Tsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:13
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/20; G05F3/24
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
143 words
A circuit for regulating a power supply voltage, the circuit comprising: a regulator circuit for correcting the power supply voltage at a rate which varies with the regulator circuit power consumption; means, responsive to a first control signal having first and second states. for setting a first rate of correcting the power supply voltage in response to the first state of the first control signal and for setting a second rate of correcting the power supply voltage in response to the second state of the first control signal; and means, responsive to a second control signal, for setting a third rate of correcting the power supply voltage, the second control signal corresponding to a selected period of operation of a device, the device imposing a greater load on the power supply during the selected period of operation than during other periods of operation.
Claim 2
Dependent Claim
143 words
A circuit for regulating a power supply voltage, the circuit comprising: a regulator circuit for correcting the power supply voltage at a rate which varies with the regulator circuit power consumption; means, responsive to a first control signal having first and second states. for setting a first rate of correcting the power supply voltage in response to the first state of the first control signal and for setting a second rate of correcting the power supply voltage in response to the second state of the first control signal; and means, responsive to a second control signal, for setting a third rate of correcting the power supply voltage, the second control signal corresponding to a selected period of operation of a device, the device imposing a greater load on the power supply during the selected period of operation than during other periods of operation.
Claim 3
Dependent Claim
31 words
A circuit, as in claim 1, wherein the device produces at least one of the control signals for setting at least one of the rates of correcting the power supply voltage.
Claim 4
Dependent Claim
35 words
A circuit, as in claim 1, wherein the second control signal has a first transition corresponding to a beginning of the selected period and a second transition corresponding to an end of the selected period.
Claim 5
Dependent Claim
64 words
A circuit, as in claim 1, which further comprises: a first input terminal for receiving a reference voltage; and a second input terminal for receiving a power supply sample voltage which varies directly with the power supply voltage, wherein the regulator circuit correction of the power supply voltage varies in response to a difference between the reference voltage and the power supply sample voltage.
Claim 6
Dependent Claim
20 words
A circuit, as in claim 4, wherein the power supply sample voltage is a fraction of the power supply voltage.
Claim 7
Dependent Claim
46 words
A circuit, as in claim 1, wherein the regulator circuit further comprises: a comparator circuit for producing a correction signal at a rate varying with power consumption of the comparator circuit; and a drive circuit, responsive to the correction signal, for correcting the power supply voltage.
Claim 8
Dependent Claim
39 words
A circuit, as in claim 1, wherein a first transition of the second control signal corresponds to a beginning of the selected period and a second transition of another control signal corresponds to an end of the selected period.
Claim 9
Dependent Claim
24 words
A circuit, as in claim 1, wherein the first state corresponds to a precharge cycle and the second state corresponds to an active cycle.
Claim 10
Dependent Claim
18 words
A circuit, as in claim 8, wherein the selected period corresponds to a high-current event of the device.
Claim 11
Dependent Claim
18 words
A circuit, as in claim 8, wherein the selected period corresponds to a sensing operation of the device.
Claim 12
Dependent Claim
30 words
A circuit, as in claim 1, wherein the first state corresponds to a standby mode of the device and the second state corresponds to an active mode of the device.
Claim 13
Dependent Claim
18 words
A circuit, as in claim 11, wherein the selected period corresponds to a high-current event of the device.
Claim 14
Independent Claim
128 words
A method of regulating a power supply voltage, the method including the steps of: correcting the power supply voltage at a rate which varies with power consumption of a regulator circuit; applying the power supply voltage to a device; producing a first state of a first control signal for setting a first rate of correcting the power supply voltage; producing a second state of the first control signal for setting a second rate of correcting the power supply voltage; producing a second control signal at a selected period of operation of the device for setting a third rate of correcting the power supply voltage; and imposing a greater load on the power supply by the device during the selected period of operation than during other periods of operation.
Claim 15
Independent Claim
128 words
A method of regulating a power supply voltage, the method including the steps of: correcting the power supply voltage at a rate which varies with power consumption of a regulator circuit; applying the power supply voltage to a device; producing a first state of a first control signal for setting a first rate of correcting the power supply voltage; producing a second state of the first control signal for setting a second rate of correcting the power supply voltage; producing a second control signal at a selected period of operation of the device for setting a third rate of correcting the power supply voltage; and imposing a greater load on the power supply by the device during the selected period of operation than during other periods of operation.
Claim 16
Dependent Claim
62 words
A method, as in claim 13, further including the steps of: producing a reference voltage; producing a power supply sample voltage; comparing the reference voltage to the power supply sample voltage, the power supply sample voltage varying with the power supply voltage; and correcting the power supply voltage according to a difference between the reference voltage and the power supply sample voltage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-04 | 1999-03-06 | 1999-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-04 | 2003-03-06 | 2003-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-04 | 2007-03-06 | 2007-09-05 | $7700.00 | Window Closed / Lapsed |