FI941790A - A method for reducing the power consumption of an electronic device with a voltage regulator, and an electronic device with a voltage regulator that saves electrical power - Google Patents
A method for reducing the power consumption of an electronic device with a voltage regulator, and an electronic device with a voltage regulator that saves electrical power Download PDFInfo
- Publication number
- FI941790A FI941790A FI941790A FI941790A FI941790A FI 941790 A FI941790 A FI 941790A FI 941790 A FI941790 A FI 941790A FI 941790 A FI941790 A FI 941790A FI 941790 A FI941790 A FI 941790A
- Authority
- FI
- Finland
- Prior art keywords
- voltage regulator
- electronic device
- power consumption
- slower mode
- reducing
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Electrical Variables (AREA)
- Direct Current Feeding And Distribution (AREA)
- Mobile Radio Communication Systems (AREA)
- Amplifiers (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention relates to a method for reducing power consumption of an electronic device comprising at least one voltage regulator. The regulating loop of at least one voltage regulator of the electronic device is controlled into a slower mode during periods when normal voltage regulator accuracy is not required, this period being known by the electronic device. The voltage regulator loop is controlled into a slower mode by switching the slew rate into a slower mode with the aid of an auxiliary input (SLEEP) arranged in the voltage regulator's differential amplifier (2) and by decreasing the current flowing through the differential amplifier. The invention is applicable in different electronic devices, particularly in battery powered devices in order to increase the operational time of the battery. For instance, in order to reduce the power consumption the voltage regulator of a mobile telephone can be switched into a slower mode between the control channel messages received from a base station. <IMAGE>
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI941790A FI96153C (en) | 1994-04-18 | 1994-04-18 | A method for reducing the power consumption of an electrical device with a voltage regulator, and a voltage regulator-equipped electrical device that saves electric power |
DE69511930T DE69511930T2 (en) | 1994-04-18 | 1995-04-18 | Method and device for controlling the power consumption of an electronic device |
JP7092556A JPH0869330A (en) | 1994-04-18 | 1995-04-18 | Apparatus and method for voltage regulation for control of power consumption of electronic apparatus |
EP95302570A EP0678963B1 (en) | 1994-04-18 | 1995-04-18 | Method and apparatus for controlling the power consumption of an electronic device |
AT95302570T ATE184431T1 (en) | 1994-04-18 | 1995-04-18 | METHOD AND DEVICE FOR CONTROLLING THE POWER CONSUMPTION OF AN ELECTRONIC DEVICE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI941790A FI96153C (en) | 1994-04-18 | 1994-04-18 | A method for reducing the power consumption of an electrical device with a voltage regulator, and a voltage regulator-equipped electrical device that saves electric power |
FI941790 | 1994-04-18 |
Publications (4)
Publication Number | Publication Date |
---|---|
FI941790A0 FI941790A0 (en) | 1994-04-18 |
FI941790A true FI941790A (en) | 1995-10-19 |
FI96153B FI96153B (en) | 1996-01-31 |
FI96153C FI96153C (en) | 1996-05-10 |
Family
ID=8540543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI941790A FI96153C (en) | 1994-04-18 | 1994-04-18 | A method for reducing the power consumption of an electrical device with a voltage regulator, and a voltage regulator-equipped electrical device that saves electric power |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0678963B1 (en) |
JP (1) | JPH0869330A (en) |
AT (1) | ATE184431T1 (en) |
DE (1) | DE69511930T2 (en) |
FI (1) | FI96153C (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6081733A (en) * | 1997-04-16 | 2000-06-27 | Motorola, Inc. | Communication control apparatus and method |
JP2000066745A (en) * | 1998-08-26 | 2000-03-03 | New Japan Radio Co Ltd | Constant voltage regulator circuit |
FR2807846A1 (en) | 2000-04-12 | 2001-10-19 | St Microelectronics Sa | LOW POWER CONSUMPTION VOLTAGE REGULATOR |
JP3755585B2 (en) * | 2001-05-11 | 2006-03-15 | セイコーエプソン株式会社 | Display controller, display unit, and electronic device |
DE10223772A1 (en) * | 2002-05-28 | 2003-12-18 | Infineon Technologies Ag | Circuit for voltage converter used in e.g. system ICs or components, e.g. a CAN transceiver and/or microcontroller for a vehicular system, includes regulator with control input which is cycled on and off in accordance with state signal |
JP2006079301A (en) * | 2004-09-09 | 2006-03-23 | Denso Corp | Power supply circuit |
CN100388149C (en) * | 2004-12-23 | 2008-05-14 | 凌阳科技股份有限公司 | Voltage stabilizer with low stood by consumption current |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5142219A (en) * | 1991-05-01 | 1992-08-25 | Winbond Electronics North America Corporation | Switchable current-reference voltage generator |
-
1994
- 1994-04-18 FI FI941790A patent/FI96153C/en active
-
1995
- 1995-04-18 DE DE69511930T patent/DE69511930T2/en not_active Expired - Fee Related
- 1995-04-18 AT AT95302570T patent/ATE184431T1/en not_active IP Right Cessation
- 1995-04-18 EP EP95302570A patent/EP0678963B1/en not_active Expired - Lifetime
- 1995-04-18 JP JP7092556A patent/JPH0869330A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0678963B1 (en) | 1999-09-08 |
FI96153B (en) | 1996-01-31 |
FI941790A0 (en) | 1994-04-18 |
JPH0869330A (en) | 1996-03-12 |
EP0678963A3 (en) | 1996-11-06 |
EP0678963A2 (en) | 1995-10-25 |
DE69511930D1 (en) | 1999-10-14 |
DE69511930T2 (en) | 2000-03-09 |
ATE184431T1 (en) | 1999-09-15 |
FI96153C (en) | 1996-05-10 |
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Legal Events
Date | Code | Title | Description |
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BB | Publication of examined application |