EP1464197B1 - Regulateur de tension pour dispositif electronique - Google Patents

Regulateur de tension pour dispositif electronique Download PDF

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Publication number
EP1464197B1
EP1464197B1 EP02799850.9A EP02799850A EP1464197B1 EP 1464197 B1 EP1464197 B1 EP 1464197B1 EP 02799850 A EP02799850 A EP 02799850A EP 1464197 B1 EP1464197 B1 EP 1464197B1
Authority
EP
European Patent Office
Prior art keywords
voltage
output voltage
regulator
feedback network
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02799850.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1464197A2 (fr
Inventor
Vincent Lomba
Christophe Rouverand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DRNC Holdings Inc
Original Assignee
DRNC Holdings Inc
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Filing date
Publication date
Application filed by DRNC Holdings Inc filed Critical DRNC Holdings Inc
Publication of EP1464197A2 publication Critical patent/EP1464197A2/fr
Application granted granted Critical
Publication of EP1464197B1 publication Critical patent/EP1464197B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G05F1/565—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor

Definitions

  • the present invention relates to a voltage regulator for an electronic device, for example a radiocommunication terminal, for supplying a regulated output voltage to an electronic subassembly of the terminal from an input voltage connected to an energy accumulator.
  • One of the non-exclusive fields of application of the invention is that of mobile radio communication terminals operating in a cellular radiocommunication system.
  • the invention applies in particular, but not exclusively, to a system according to the GSM standard (Special Group Public Mobile Radio Systems).
  • a voltage regulator provides the exact voltage required by an electronic subassembly of a radiocommunication terminal for its optimal operation.
  • a regulator of this type can be used between an energy accumulator such as a battery and a radio preamplifier.
  • a radio preamplifier allows the management of the transmission and reception of the radio signal of the radiocommunication terminal.
  • the Radio Frequency (RF) signal is transmitted or received only for a predetermined time with a periodicity fixed by the reference clock of the network, thus in the form of a variable signal in square, as the indicates the figure 1a which illustrates a GSM signal.
  • the figure 1a illustrates that the power amplifiers are subjected to a sudden voltage jump 1, then at the end of the slot 2 to a sudden voltage drop 3, followed by a cut-off time 5.
  • the voltage regulator must be deactivated at the end of the first voltage jump (6), and reactivated before the second voltage jump (7).
  • the voltage regulator must go from a zero output voltage to the required output voltage Vout, which represents a voltage difference Dv 1 .
  • Another loss of energy is that when the electronic subassembly does not require power, there is a leakage current in the voltage regulator.
  • the object of the invention is to present a solution to these problems and to regulate the voltage delivered to the radio preamplifier while limiting energy losses.
  • the invention proposes a voltage regulator for an electronic device providing a regulated output voltage from an input voltage, the output voltage being connected to an electronic subassembly of the electronic device intended to be supplied with power. energy
  • said regulator comprising a control element receiving the input voltage, a capacitor at the output of the regulator to be periodically charged by the input voltage, and periodically supplying its charge to the electronic subassembly of the electronic device when said electronic subassembly requires a power supply, the capacitor being in parallel with a feedback network taking a part of the output voltage and providing a measurement of the output voltage to the control element, the counter network reaction comprising at least two transistors, a voltage comparator and a switch if between the comparator output and the input of the control element, characterized in that a switch is inserted in the feedback network between the input of the feedback network and the first transistor, the switch being in the open position when the electronic subassembly does not require energy.
  • the invention makes it possible to reduce the reactivation time of the regulator before the voltage jump as well as the energy required to recharge the regulator.
  • the voltage comparator compares the output voltage with a reference voltage (Vref) characteristic of the electronic subassembly for power supply, and is a control transistor.
  • the invention is described in its application to radio communication terminals or mobile phones. It applies more generally to all types of radio transceivers, such as, for example, a radio messaging device.
  • the voltage regulation circuit according to the invention applies as described here as an intermediate between an energy accumulator and the radio part of the terminal, for example the radio preamplifier.
  • This circuit can also be applied to the power supply of other electronic subassemblies of the terminal such as the core of a microprocessor, for example.
  • the regulator of the invention thus allows optimum stability of the voltage delivered to the electronic subassembly of the terminal.
  • the figure 2 represents the electrical diagram of a voltage regulator according to the prior art.
  • This voltage regulator provides a regulated output voltage (Vout) to an electronic subassembly of the communication terminal for power supply.
  • the regulator is itself powered by an input voltage (Vin), connected to an energy accumulator.
  • the regulator comprises a control element (CONTR), generally a regulation control transistor receiving the input voltage (Vin).
  • CONTR control element
  • This control element (CONTR) makes it possible to readjust the output voltage (Vout) delivered with respect to a reference voltage (Vref) specific to each electronic subassembly to be powered.
  • the regulator comprises a capacitor (10) located at the output of the regulator which is intended to be periodically charged by the input voltage (Vin) and to periodically supply its load to the electronic subassembly of the terminal when said electronic subassembly requires a power supply.
  • the capacitor (10) is located in parallel with a feedback network (15) which takes a portion of the output voltage (Vout) and provides a measurement of the output voltage (Vout) to the control element ( AGAINST).
  • the feedback network comprises at least two resistors (20,30), a voltage comparator (COMP) and a switch (40) located between the comparator output (COMP) and the input of the control element (CONTR).
  • the feedback network takes about 1% of the output voltage (Vout) to measure its value and compare it in the comparator (COMP) with the reference voltage (Vref).
  • the switch (40) When the electronic subassembly does not require energy, the switch (40) is in the open position. However, it is found that the capacitor (10) discharges into the feedback network (15) and a leakage current is created and consumed by the resistors, (20), (30).
  • the invention whose electrical diagram is represented in figure 3 , proposes an improvement of the existing voltage regulators.
  • This voltage regulator provides a regulated output voltage (Vout) to an electronic subassembly of the communication terminal for power supply.
  • the regulator is itself powered by an input voltage (Vin), connected to an energy accumulator, such as a battery.
  • Vin input voltage
  • energy accumulator such as a battery
  • the regulator comprises, as in the prior art, a control element (CONTR), a capacitor (10), a feedback network (15) which comprises at least two resistors (20, 30), a voltage comparator ( COMP) and a switch (40) arranged identically to the prior art.
  • CONTR control element
  • COMP voltage comparator
  • switch 40
  • a switch (50) is inserted in the feedback network between the input of the feedback network and the first transistor (20).
  • the switch (50) is in the open position when the electronic subassembly, for example a radio preamplifier, does not require a power supply.
  • the switch (50) is in the closed position otherwise.
  • the switch (50) being in the open position, there is no leakage current as in the regulator of the prior art.
  • the capacitor (10) can therefore recharge faster to reach the output voltage value (Vout) optimal operation of the preamplifier.
  • the voltage regulator according to the invention must go from a non-zero output voltage to the output voltage Vout required, which represents a voltage difference Dv 2 , significantly lower than the voltage difference Dv 1 .

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 Electrical Variables (AREA)
EP02799850.9A 2002-01-03 2002-12-24 Regulateur de tension pour dispositif electronique Expired - Lifetime EP1464197B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0200031 2002-01-03
FR0200031A FR2834354B1 (fr) 2002-01-03 2002-01-03 Regulateur de tension pour dispositif electronique
PCT/FR2002/004547 WO2003061317A2 (fr) 2002-01-03 2002-12-24 Regulateur de tension pour dispositif electronique

Publications (2)

Publication Number Publication Date
EP1464197A2 EP1464197A2 (fr) 2004-10-06
EP1464197B1 true EP1464197B1 (fr) 2016-09-07

Family

ID=8871146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02799850.9A Expired - Lifetime EP1464197B1 (fr) 2002-01-03 2002-12-24 Regulateur de tension pour dispositif electronique

Country Status (5)

Country Link
US (1) US20050024024A1 (ja)
EP (1) EP1464197B1 (ja)
JP (1) JP2005515574A (ja)
FR (1) FR2834354B1 (ja)
WO (1) WO2003061317A2 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009069093A1 (en) * 2007-11-30 2009-06-04 Nxp B.V. Arrangement and approach for providing a reference voltage
CN104377775A (zh) * 2014-11-20 2015-02-25 广西大学 便携式可调节电压充电器控制系统
WO2017113065A1 (zh) * 2015-12-28 2017-07-06 深圳市聚作照明股份有限公司 一种自动充电电路及应急灯具
FR3107147B1 (fr) * 2020-02-12 2023-11-03 Somfy Activites Sa Dispositif d’alimentation électrique, actionneur électromécanique comportant un tel dispositif d’alimentation électrique, installation de fermeture, d’occultation ou de protection solaire comprenant un tel actionneur électromécanique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5831467A (en) * 1991-11-05 1998-11-03 Monolithic System Technology, Inc. Termination circuit with power-down mode for use in circuit module architecture

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5610502A (en) * 1995-08-24 1997-03-11 Delco Electronics Corp. Boost power supply with clock period compensation
GB2307141A (en) * 1995-11-04 1997-05-14 John Charles Duncan Switching Regulator for GSM Mobile
US5757167A (en) * 1996-07-12 1998-05-26 Cardiac Pacemakers, Inc. Voltage regulator
WO1999000997A1 (en) * 1997-06-27 1999-01-07 Koninklijke Philips Electronics N.V. Power supply switching in a radio communication device
FR2768527B1 (fr) * 1997-09-18 2000-07-13 Sgs Thomson Microelectronics Regulateur de tension
DE19809999A1 (de) * 1998-03-09 1999-09-16 Michael Kirstein Energiesparschaltung, die in Niederspannungsnetzteilen eingebaut werden kann und die die Aufgabe hat das Netzteil nur an das Energienetz zu schalten, wenn ein Verbraucher angeschlossen wird
IT1316002B1 (it) * 2000-11-08 2003-03-26 St Microelectronics Srl Regolatore di tensione per circuiti a basso consumo.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5831467A (en) * 1991-11-05 1998-11-03 Monolithic System Technology, Inc. Termination circuit with power-down mode for use in circuit module architecture

Also Published As

Publication number Publication date
FR2834354B1 (fr) 2005-04-01
WO2003061317A3 (fr) 2004-02-12
FR2834354A1 (fr) 2003-07-04
EP1464197A2 (fr) 2004-10-06
US20050024024A1 (en) 2005-02-03
WO2003061317A2 (fr) 2003-07-24
JP2005515574A (ja) 2005-05-26

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