EP1464197B1 - Voltage regulator for electronic device - Google Patents
Voltage regulator for electronic device Download PDFInfo
- 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
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- 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
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- 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)
Description
La présente invention concerne un régulateur de tension pour un dispositif électronique, par exemple un terminal de radiocommunication, destiné à fournir une tension de sortie régulée à un sous-ensemble électronique du terminal depuis une tension d'entrée reliée à un accumulateur d'énergie.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.
Un des domaines d'application, non exclusif, de l'invention est celui des terminaux mobiles de radiocommunication fonctionnant dans un système de radiocommunication cellulaire. L'invention s'applique notamment, mais non exclusivement, à un système selon le standard GSM (Groupe spécial Systèmes Mobiles publics de radiocommunication).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).
Un régulateur de tension permet de fournir la tension exacte requise par un sous-ensemble électronique d'un terminal de radiocommunication pour son fonctionnement optimal.A voltage regulator provides the exact voltage required by an electronic subassembly of a radiocommunication terminal for its optimal operation.
La valeur de la tension fournie doit être précise et très stable sous peine d'endommager irréversiblement le sous-ensemble, ce qui nécessiterait un changement coûteux du sous-ensemble électronique.The value of the voltage supplied must be precise and very stable, otherwise the subset will be damaged irreversibly, which would require an expensive change of the electronic subassembly.
Un régulateur de ce type peut être utilisé entre un accumulateur d'énergie comme une batterie et un préamplificateur radio. Un préamplificateur radio permet la gestion de l'émission et de la réception du signal radio du terminal de radiocommunication.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.
Lors du fonctionnement du terminal, le signal RadioFréquence (RF) n'est émis ou reçu que pendant un temps déterminé avec une périodicité fixée par l'horloge de référence du réseau, donc sous forme d'un signal variable en créneau, comme l'indique la
La
La période T du signal représenté et de 4,615ms. Nous pouvons constater que le créneau 2 du signal GSM est de 0,577ms.The period T of the signal represented and 4.615 ms. We can see that
Pour fournir la tension nécessaire au bon moment au préamplificateur radio, il est connu que le régulateur de tension doive être désactivé à la fin du premier saut de tension (6), et réactivé avant le deuxième saut de tension (7).To provide the necessary voltage at the right time to the radio preamplifier, it is known that the voltage regulator must be deactivated at the end of the first voltage jump (6), and reactivated before the second voltage jump (7).
Sur la
Ainsi, le régulateur de tension doit passer d'une tension de sortie nulle à la tension de sortie Vout nécessaire, ce qui représente une différence de tension Dv1.Thus, the voltage regulator must go from a zero output voltage to the required output voltage Vout, which represents a voltage difference Dv 1 .
Ceci induit une perte d'énergie considérable puisqu'il faut pour chaque saut de tension que le régulateur de tension se recharge de la tension Dv1 après voir été réactivé, et ceci environ 200 fois par seconde puisqu'il y a un saut de tension tous les 4,615 ms.This induces a considerable loss of energy since it is necessary for each voltage jump that the voltage regulator recharges the voltage Dv 1 after being reactivated, and this about 200 times per second since there is a voltage jump every 4,615 ms.
Une autre perte d'énergie vient du fait que, lorsque le sous-ensemble électronique ne requiert pas d'énergie, il existe un courant de fuite dans le régulateur de tension.Another loss of energy is that when the electronic subassembly does not require power, there is a leakage current in the voltage regulator.
L'invention a pour but de présenter une solution à ces problèmes et de réguler la tension délivrée au préamplificateur radio tout en limitant les pertes d'énergie.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.
L'invention, à cet effet, propose, un régulateur de tension pour dispositif électronique fournissant une tension de sortie régulée depuis une tension d'entrée, la tension de sortie étant reliée à un sous-ensemble électronique du dispositif électronique destiné à être alimenté en énergie, ledit régulateur comprenant un élément de contrôle recevant la tension d'entrée, un condensateur situé en sortie du régulateur destiné à être chargé périodiquement par la tension d'entrée et à fournir périodiquement sa charge au sous-ensemble électronique du dispositif électronique lorsque ledit sous-ensemble électronique requiert une alimentation en énergie, le condensateur étant en parallèle avec un réseau de contre-réaction prélevant une partie de la tension de sortie et fournissant une mesure de la tension de sortie à l'élément de contrôle, le réseau de contre-réaction comprenant au moins deux transistors, un comparateur de tension et un interrupteur situé entre la sortie du comparateur et l'entrée de l'élément de contrôle, caractérisé en ce que un interrupteur est inséré dans le réseau de contre-réaction entre l'entrée du réseau de contre réaction et le premier transistor, l'interrupteur étant en position ouverte lorsque le sous-ensemble électronique ne requiert pas d'énergie.To this end, 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.
Ainsi, l'invention permet de diminuer le temps de réactivation le régulateur avant le saut de tension ainsi que l'énergie nécessaire à la recharge du régulateur.Thus, 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.
Dans un mode de réalisation particulier, le comparateur de tension (COMP) compare la tension de sortie à une tension de référence (Vref) caractéristique du sous-ensemble électronique destiné à être alimenté en énergie, et est un transistor de contrôle.In a particular embodiment, the voltage comparator (COMP) compares the output voltage with a reference voltage (Vref) characteristic of the electronic subassembly for power supply, and is a control transistor.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description suivante d'un mode de réalisation particulier de l'invention, donné à titre illustratif et pas limitatif, et des dessins énoncés ci-dessous.
- La
figure 1a , déjà décrite, représente la forme du signal variable de type GSM. - La
figure 1b , déjà décrite, représente la tension de sortie d'un régulateur de tension selon l'art antérieur. - La
figure 1c représente la tension de sortie d'un régulateur de tension suivant l'invention. - La
figure 2 représente le schéma électrique d'un régulateur de tension selon l'art antérieur. - La
figure 3 représente le schéma électrique d'un régulateur de tension selon l'invention.
- The
figure 1a , already described, represents the shape of the GSM type variable signal. - The
figure 1b , already described, represents the output voltage of a voltage regulator according to the prior art. - The
figure 1c represents the output voltage of a voltage regulator according to the invention. - The
figure 2 represents the electrical diagram of a voltage regulator according to the prior art. - The
figure 3 represents the electrical diagram of a voltage regulator according to the invention.
Dans la suite de la description, l'invention est décrite dans son application aux terminaux de radio communication ou téléphones portables. Elle s'applique plus généralement à tous types d'émetteurs-récepteurs radio, tels que, par exemple, un appareil de radio messagerie.In the following description, 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.
Le circuit de régulation de tension selon l'invention s'applique comme décrit ici comme intermédiaire entre un accumulateur d'énergie et la partie radio du terminal, soit par exemple le préamplificateur radio.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.
Ce circuit peut également s'appliquer à l'alimentation en énergie d'autres sous-ensembles électroniques du terminal tel que le coeur d'un microprocesseur, par exemple.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.
Le régulateur de l'invention permet ainsi une stabilité optimale de la tension délivrée au sous-ensemble électronique du terminal.The regulator of the invention thus allows optimum stability of the voltage delivered to the electronic subassembly of the terminal.
La
Ce régulateur de tension fournit une tension de sortie régulée (Vout) à un sous-ensemble électronique du terminal de communication destiné à être alimenté en énergie.This voltage regulator provides a regulated output voltage (Vout) to an electronic subassembly of the communication terminal for power supply.
Le régulateur est lui-même alimenté par une tension d'entrée (Vin), reliée à un accumulateur d'énergié.The regulator is itself powered by an input voltage (Vin), connected to an energy accumulator.
Le régulateur comprend un élément de contrôle (CONTR), généralement un transistor de contrôle de régulation recevant la tension d'entrée (Vin). Cet élément de contrôle (CONTR) permet de réajuster la tension de sortie (Vout) délivrée par rapport à une tension de référence (Vref) spécifique à chaque sous-ensemble électronique à alimenter.The regulator comprises a control element (CONTR), generally a regulation control transistor receiving the input voltage (Vin). 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.
Le régulateur comprend un condensateur (10) situé en sortie du régulateur qui est destiné à être chargé périodiquement par la tension d'entrée (Vin) et à fournir périodiquement sa charge au sous-ensemble électronique du terminal lorsque ledit sous-ensemble électronique requiert une alimentation en énergie.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.
Le condensateur (10) est situé en parallèle avec un réseau de contre-réaction (15) qui prélève une partie de la tension de sortie (Vout) et fournit une mesure de la tension de sortie (Vout) à l'élément de contrôle (CONTR).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).
Le réseau de contre-réaction (15) comprend au moins deux resistances (20,30), un comparateur de tension (COMP) et un interrupteur (40) situé entre la sortie du comparateur (COMP) et l'entrée de l'élément de contrôle (CONTR).The feedback network (15) 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).
Le réseau de contre-réaction (15) prélève environ 1% de la tension de sortie (Vout) afin d'en mesurer la valeur et de la comparer dans le comparateur (COMP) avec la tension de référence (Vref).The feedback network (15) takes about 1% of the output voltage (Vout) to measure its value and compare it in the comparator (COMP) with the reference voltage (Vref).
Lorsque le sous-ensemble électronique ne requiert pas d'énergie, l'interrupteur (40) est en position ouverte. Cependant, on constate que le condensateur (10) se décharge dans le réseau de contre-réaction (15) et un courant de fuite est créé et consommé par les résistances, (20), (30).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).
L'invention, dont le schéma électrique est représenté en
Ce régulateur de tension fournit une tension de sortie régulée (Vout) à un sous-ensemble électronique du terminal de communication destiné à être alimenté en énergie.This voltage regulator provides a regulated output voltage (Vout) to an electronic subassembly of the communication terminal for power supply.
Le régulateur est lui même alimenté par une tension d'entrée (Vin), reliée à un accumulateur d'énergie, tel une batterie.The regulator is itself powered by an input voltage (Vin), connected to an energy accumulator, such as a battery.
Le régulateur comprend comme celui de l'art antérieur un élément de contrôle (CONTR), un condensateur (10), un réseau de contre-réaction (15) qui comprend au moins deux resistances (20,30), un comparateur de tension (COMP) et un interrupteur (40) disposés de façon identique à l'art antérieur.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.
Selon l'invention, un interrupteur (50) est inséré dans le réseau de contre-réaction entre l'entrée du réseau de contre réaction et le premier transistor (20).According to the invention, a switch (50) is inserted in the feedback network between the input of the feedback network and the first transistor (20).
L'interrupteur (50) est en position ouverte lorsque le sous-ensemble électronique, par exemple un préamplificateur radio, ne requiert pas d'alimentation en énergie.The switch (50) is in the open position when the electronic subassembly, for example a radio preamplifier, does not require a power supply.
L'interrupteur (50) est en position fermée sinon.The switch (50) is in the closed position otherwise.
L'interrupteur (50) étant en position ouverte, il n'y a pas de courant de fuite comme dans le régulateur de l'art antérieur.The switch (50) being in the open position, there is no leakage current as in the regulator of the prior art.
Le condensateur (10) peut donc se recharger plus vite pour atteindre la valeur de tension de sortie (Vout) optimale au fonctionnement du préamplificateur.The capacitor (10) can therefore recharge faster to reach the output voltage value (Vout) optimal operation of the preamplifier.
Ceci implique un fonctionnement optimal du régulateur de tension, tel que le montre la
- Dans le cas d'un préamplificateur radio, celui-ci ne requiert pas d'énergie pendant la période (5) entre deux sauts de tension (6) et (7) représentée sur la
figure 1c .
- In the case of a radio preamplifier, it does not require energy during the period (5) between two voltage jumps (6) and (7) represented on the
figure 1c .
En comparant les
De plus, le régulateur de tension selon l'invention doit passer d'une tension de sortie non nulle à la tension de sortie Vout nécessaire, ce qui représente une différence de tension Dv2, nettement inférieur à la différence de tension Dv1.In addition, 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 .
Nous constatons ainsi un gain d'énergie considérable, puisqu'il n'y a pas de courant de fuite et qu'avant chaque saut de tension le régulateur de tension se recharge très rapidement.We thus note a considerable energy gain, since there is no leakage current and before each voltage jump the voltage regulator recharges very quickly.
Claims (5)
- A voltage regulator for an electronic device, the regulator supplying a regulated output voltage (Vout) from an input voltage (Vin), the output voltage (Vout) being applied to an electronic subsystem of the electronic device adapted to be supplied with power, said regulator comprising a controller (CONTR) receiving the input voltage (Vin), a capacitor (10) situated at the output of the regulator and adapted to be charged periodically by the input voltage (Vin) and periodically to supply its charge to the electronic subsystem of the electronic device when said electronic subsystem requires to be supplied with power, the capacitor (10) being connected in parallel with a feedback network for sampling a portion of the output voltage (Vout) and supplying a measured value of the output voltage (Vout) to the controller (CONTR), the feedback network comprising at least two resistors (20, 30), a voltage comparator (COMP), and a switch (40) situated between the output of the comparator (COMP) and the input of the controller (CONTR), which voltage regulator is characterized in that a switch (50) is inserted into the feedback network between the input of the feedback network and the first resistor (20),the switch (50) being open when the electronic subsystem requires no power.
- A voltage regulator according to claim 1, characterized in that the voltage comparator (COMP) compares the sampled portion of the output voltage to a reference voltage (Vref) characteristic of the electronic subsystem adapted to be supplied with power.
- A voltage regulator according to claim 1, characterized in that the electronic device is a radio terminal.
- A voltage regulator according to claim 1, wherein the switch (50) is controlled to close at an activation time interval (ta2) before the electronic subsystem requires power, the activation time interval (ta2) being less than a charging time interval (ta1) required to fully charge the capacitor (10).
- A method for regulating an output voltage for an electronic device from an input voltage, the output voltage being applied to an electronic subsystem of the electronic device adapted to be supplied with power, the method comprising:providing a controller that receives the input voltage and adjusts the output voltage relative to a measured value;providing a feedback network that compares a portion of the output voltage to a reference voltage and provides the measured value to the controller;providing a capacitor at the output voltage adapted to be charged by the controller and supply charge to the electronic subsystem;switching the feedback network such that the feedback network is disconnected from the output voltage during a time period where the electronic subsystem does not require power and connected to the output voltage an activation time interval before the electronic subsystem subsequently requires power, the activation time interval less than a charging time interval required to fully charge the capacitor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0200031 | 2002-01-03 | ||
| FR0200031A FR2834354B1 (en) | 2002-01-03 | 2002-01-03 | VOLTAGE REGULATOR FOR ELECTRONIC DEVICE |
| PCT/FR2002/004547 WO2003061317A2 (en) | 2002-01-03 | 2002-12-24 | Voltage regulator for electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1464197A2 EP1464197A2 (en) | 2004-10-06 |
| EP1464197B1 true EP1464197B1 (en) | 2016-09-07 |
Family
ID=8871146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02799850.9A Expired - Lifetime EP1464197B1 (en) | 2002-01-03 | 2002-12-24 | Voltage regulator for electronic device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20050024024A1 (en) |
| EP (1) | EP1464197B1 (en) |
| JP (1) | JP2005515574A (en) |
| FR (1) | FR2834354B1 (en) |
| WO (1) | WO2003061317A2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8502519B2 (en) | 2007-11-30 | 2013-08-06 | Nxp B.V. | Arrangement and approach for providing a reference voltage |
| CN104377775A (en) * | 2014-11-20 | 2015-02-25 | 广西大学 | Portable adjustable voltage charger control system |
| WO2017113065A1 (en) * | 2015-12-28 | 2017-07-06 | 深圳市聚作照明股份有限公司 | Automatic charging circuit and emergency lamp |
| FR3107147B1 (en) * | 2020-02-12 | 2023-11-03 | Somfy Activites Sa | Electrical supply device, electromechanical actuator comprising such an electrical supply device, closing, concealment or solar protection installation comprising such an electromechanical actuator |
Citations (1)
| 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)
| 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 (en) * | 1997-09-18 | 2000-07-13 | Sgs Thomson Microelectronics | VOLTAGE REGULATOR |
| DE19809999A1 (en) * | 1998-03-09 | 1999-09-16 | Michael Kirstein | Energy-saving network |
| IT1316002B1 (en) * | 2000-11-08 | 2003-03-26 | St Microelectronics Srl | VOLTAGE REGULATOR FOR LOW CONSUMPTION CIRCUITS. |
-
2002
- 2002-01-03 FR FR0200031A patent/FR2834354B1/en not_active Expired - Fee Related
- 2002-12-24 EP EP02799850.9A patent/EP1464197B1/en not_active Expired - Lifetime
- 2002-12-24 US US10/469,186 patent/US20050024024A1/en not_active Abandoned
- 2002-12-24 JP JP2003561273A patent/JP2005515574A/en not_active Withdrawn
- 2002-12-24 WO PCT/FR2002/004547 patent/WO2003061317A2/en active Application Filing
Patent Citations (1)
| 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 |
|---|---|
| JP2005515574A (en) | 2005-05-26 |
| WO2003061317A3 (en) | 2004-02-12 |
| FR2834354B1 (en) | 2005-04-01 |
| FR2834354A1 (en) | 2003-07-04 |
| US20050024024A1 (en) | 2005-02-03 |
| WO2003061317A2 (en) | 2003-07-24 |
| EP1464197A2 (en) | 2004-10-06 |
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