FR2833113A1 - Reversible DC-DC converter for dual voltage vehicle supply network uses Zener diode to protect low-voltage side of converter and converter itself - Google Patents

Reversible DC-DC converter for dual voltage vehicle supply network uses Zener diode to protect low-voltage side of converter and converter itself Download PDF

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Publication number
FR2833113A1
FR2833113A1 FR0115557A FR0115557A FR2833113A1 FR 2833113 A1 FR2833113 A1 FR 2833113A1 FR 0115557 A FR0115557 A FR 0115557A FR 0115557 A FR0115557 A FR 0115557A FR 2833113 A1 FR2833113 A1 FR 2833113A1
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Prior art keywords
converter
voltage
network
converter according
zener diode
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Granted
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FR0115557A
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French (fr)
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FR2833113B1 (en
Inventor
Olivier Goguet
Thomas Earith
Dominique Sebille
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Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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Priority to FR0115557A priority Critical patent/FR2833113B1/en
Priority to DE2002156121 priority patent/DE10256121A1/en
Publication of FR2833113A1 publication Critical patent/FR2833113A1/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1582—Buck-boost converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
    • H02H11/003—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection using a field effect transistor as protecting element in one of the supply lines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The DC-DC converter operates in a network providing 42V and 14V supplies. The network has over-voltage protection for both the converter and the low voltage part of the network. The high-voltage side uses switching transistors (T1,T2) to produce voltage transients in an inductor (L) supplied from the low-voltage side (Bf). A Zener diode (D1) and capacitor (C2) protect the low-voltage side.

Description

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L'invention concerne un convertisseur de courant continu en courant continu (DC/DC), réversible, pour réseau à deux tensions, une tension continue élevée telle que 42 volts et une tension continue plus faible telle que 14 volts, le réseau comprenant des moyens de protection contre des surtensions. L'invention concerne également un réseau bitension comprenant un tel convertisseur.  The invention relates to a reversible direct current to direct current (DC / DC) converter for a two-voltage network, a high direct voltage such as 42 volts and a lower direct voltage such as 14 volts, the network comprising means surge protection. The invention also relates to a two-voltage network comprising such a converter.

Des convertisseurs de ce type sont connus et par exemple utilisés dans des véhicules équipés d'un réseau électrique de bord bitension, la tension de 14 volts étant générée par le convertisseur.  Converters of this type are known and, for example, used in vehicles fitted with a dual-voltage on-board electrical network, the voltage of 14 volts being generated by the converter.

Sur les réseaux bitension le problème des surtensions est encore plus accru que dans les réseaux monotension du fait que la surtension peut venir de l'intérieur du réseau. En effet, s'il y a un courtcircuit entre un fil sous 42 volts et un fil sous 14 volts, il s'établit sur le réseau 14 volts un potentiel inacceptable en fonctionnement. Aujourd'hui la plupart des boîtiers 14 volts supportent 24 volts en continu et 35 volts en transitoire en cas d'une surtension produite lors d'une déconnexion de toute la charge ainsi que de la batterie aux bornes de l'alternateur. Si les boîtiers constatent la tension de 42 volts, ils sont susceptibles soit de s'arrêter de fonctionner soit d'être détruits.  On two-voltage networks the problem of overvoltages is even greater than in single-voltage networks because the overvoltage can come from inside the network. Indeed, if there is a short circuit between a wire under 42 volts and a wire under 14 volts, it is established on the 14 volt network an unacceptable potential in operation. Today most 14 volt boxes support 24 volts continuous and 35 volts transient in the event of an overvoltage produced during disconnection of all the load as well as the battery at the terminals of the alternator. If the boxes notice a voltage of 42 volts, they are likely to either stop working or be destroyed.

La présente invention a pour but de proposer une solution au problème des surtensions pour des réseaux bitension.  The present invention aims to provide a solution to the problem of overvoltages for two-voltage networks.

Pour résoudre ce problème le convertisseur DC/DC selon l'invention est caractérisé en ce qu'il est pourvu de composants permettant à la fois de protéger le convertisseur et le réseau auquel il est connecté.  To solve this problem, the DC / DC converter according to the invention is characterized in that it is provided with components making it possible both to protect the converter and the network to which it is connected.

Selon une caractéristique de l'invention, le convertisseur comprend du côté tension plus élevée un dispositif interrupteur de protection monté en série dans le bus d'entrée et adapté pour permettre une inversion de la tension à ses bornes côté tension élevée.  According to a characteristic of the invention, the converter comprises on the higher voltage side a protective switch device mounted in series in the input bus and adapted to allow a reversal of the voltage at its terminals on the high voltage side.

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Selon une autre caractéristique de l'invention, le dispositif interrupteur comporte au moins un transistor MOSFET.  According to another characteristic of the invention, the switch device comprises at least one MOSFET transistor.

Selon une autre caractéristique de l'invention, le convertisseur comporte, du côté de la tension plus faible, au moins une diode zener qui est disposée de façon anti-parallèle entre les bornes du convertisseur.  According to another characteristic of the invention, the converter comprises, on the side of the lower voltage, at least one zener diode which is arranged in an anti-parallel manner between the terminals of the converter.

L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels : - la figure 1 est une vue schématique illustrant un mode de réalisation d'un convertisseur selon l'invention ; et les figures 2A et 2B illustrent dans des vues respectivement de dessus et latérale l'emplacement d'une diode de protection sur le dissipateur d'un convertisseur selon l'invention.  The invention will be better understood, and other objects, characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating a embodiment of the invention and in which: - Figure 1 is a schematic view illustrating an embodiment of a converter according to the invention; and FIGS. 2A and 2B illustrate in top and side views respectively the location of a protection diode on the dissipator of a converter according to the invention.

En se reportant aux figures, on décrira ci-après l'invention dans son application à un convertisseur de courant continu en courant continu, appelé DC/DC, réversible, pour un réseau bitension 42 volts/14 volts.  Referring to the figures, the invention will be described below in its application to a direct current to direct current converter, called DC / DC, reversible, for a 42 volt / 14 volt dual voltage network.

Comme le montre la figure 1, un tel convertisseur désigné par la référence générale 1 comporte essentiellement, de façon connue en soi, du côté 42 volts deux interrupteurs formés par des transistors MOSFET Tl, T2, du type canal N, qui sont montés en série entre la borne Bh du potentiel 42 volts et la masse 0 et auxquels est monté en parallèle un condensateur Cl. Les transistors MOSFET sont commandés de façon à être alternativement conducteurs par application d'une tension de commande à leur électrode de grille a et produire ainsi une tension découpée sur l'inductance L. Cette inductance L est montée entre le point de jonction P des  As shown in FIG. 1, such a converter designated by the general reference 1 essentially comprises, in a manner known per se, on the 42-volt side two switches formed by MOSFET transistors T1, T2, of the N channel type, which are connected in series between the terminal Bh of the potential 42 volts and the ground 0 and to which is mounted in parallel a capacitor Cl. The MOSFET transistors are controlled so as to be alternately conductive by applying a control voltage to their gate electrode a and thus producing a voltage cut on the inductor L. This inductor L is mounted between the junction point P of the

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deux transistors et la borne basse tension 14 volts Bf du convertisseur. Entre cette borne B et la masse 0 est monté un condensateur C2. Cette structure et son fonctionnement sont connus et n'ont donc pas besoin d'être décrits plus en détail.  two transistors and the low voltage terminal 14 volts Bf of the converter. Between this terminal B and earth 0 is mounted a capacitor C2. This structure and its operation are known and therefore do not need to be described in more detail.

Conformément à l'invention un transistor mosfet T3 est monté dans le bus d'entrée côté tension 42 volts entre la borne Bh et le montage en série des deux transistors Tl, T2. Le MOSFET T3 est commandé en ouverture ou en fermeture par un potentiel de commande appliqué à son électrode de grille a et agit donc en interrupteur.  In accordance with the invention a mosfet transistor T3 is mounted in the 42 volt voltage side input bus between the terminal Bh and the series connection of the two transistors Tl, T2. The MOSFET T3 is controlled to open or close by a control potential applied to its gate electrode a and therefore acts as a switch.

Du côté de la tension plus faible 14 volts, c'est- à-dire entre la borne Bf et la masse est disposée une diode zener écrêteuse Dl montée en anti-parallèle.  On the side of the lower voltage 14 volts, that is to say between the terminal Bf and the ground is disposed a clipper zener diode Dl mounted in anti-parallel.

Concernant le fonctionnement du convertisseur selon l'invention, le transistor MOSFET T3 à canal N permet, par application à son électrode de commande a d'un signal de blocage afin de bloquer le courant si la polarité de la batterie est inversée. L'adjonction du transistor T3 permet de réaliser la fonction de protection sans perdre le bénéfice de la réversibilité du convertisseur. Le transistor MOSFET présente l'avantage supplémentaire de présenter une résistance équivalente faible et donc de minimiser les pertes de rendement du convertisseur dans la chaîne de production d'énergie électrique. Par ailleurs et afin d'optimiser le coût desdits transistors MOSFET, dans la mesure où ces interrupteurs ne sont utilisés qu'en statique dans le système en cas d'erreur de manipulation, on utilisera des composants dont la tension de claquage se situe juste au-delà de la tension de la batterie, soit de 36 volts. Il est possible d'utiliser des composants spécifiés à 35 volts ce qui diminue d'autant leur coût et leur résistance interne en conduction.  Concerning the operation of the converter according to the invention, the N-channel MOSFET T3 transistor allows, by application to its control electrode a of a blocking signal in order to block the current if the polarity of the battery is reversed. The addition of the transistor T3 makes it possible to carry out the protection function without losing the benefit of the reversibility of the converter. The MOSFET transistor has the additional advantage of having a low equivalent resistance and therefore of minimizing the efficiency losses of the converter in the electrical energy production chain. Furthermore and in order to optimize the cost of said MOSFET transistors, insofar as these switches are only used statically in the system in the event of handling error, components whose breakdown voltage is located just at - beyond the battery voltage, that is 36 volts. It is possible to use components specified at 35 volts, which reduces their cost and their internal resistance in conduction.

Dans l'exemple représenté le dispositif interrupteur de protection ne comporte qu'un seul  In the example shown the protection switch device has only one

<Desc/Clms Page number 4><Desc / Clms Page number 4>

transistor MOSFET T3. On peut cependant utiliser plusieurs transistors qui seront alors montés en parallèle. Dans certains cas on pourra remplacer les transistors MOSFET par des relais, qui sont des composants moins coûteux avec des limites d'utilisation notamment en température.  MOSFET transistor T3. It is however possible to use several transistors which will then be mounted in parallel. In some cases, it will be possible to replace the MOSFET transistors with relays, which are less expensive components with limits of use, particularly in terms of temperature.

Du côté 14 volts du convertisseur, la diode zener Dl permet de cumuler les fonctions de protection du convertisseur et du réseau 14 volts. On pourrait aussi utiliser plusieurs diodes zener. Concernant la fonction de la ou des diodes zener Dl, si pour une raison quelconque un court-circuit se produit entre les parties de réseau 14 volts et 42 volts, la diode entre en avalanche et permet de protéger la partie de réseau 14 volts et de faire fondre le fusible de tête sur la partie de réseau 42 volts. Ceci permet donc à la fois de limiter la tension sur la partie de réseau 14 volts à 35 volts max et de faire fondre plus rapidement les fusibles côté 42 volts pour assurer la déconnexion. La tension limite en sortie du convertisseur permet également d'utiliser des condensateurs de sortie dont la tenue en tension est limitée à 25 volts en continu et 35 volts en transitoire.  On the 14-volt side of the converter, the zener diode Dl allows the protection functions of the converter and the 14-volt network to be combined. We could also use several zener diodes. Regarding the function of the zener diode (s) Dl, if for any reason a short circuit occurs between the 14 volt and 42 volt network parts, the diode enters an avalanche and makes it possible to protect the 14 volt network part and blow the head fuse on the 42 volt network part. This therefore makes it possible both to limit the voltage on the part of the 14 volt network to 35 volts max and to blow the fuses faster on the 42 volt side to ensure disconnection. The limiting voltage at the output of the converter also makes it possible to use output capacitors whose voltage resistance is limited to 25 volts continuous and 35 volts transient.

En cas d'inversion de la connexion batterie deux cas de figure peuvent se produire. Soit le réseau est équipé d'un boîtier de déconnexion batterie qui ne valide la connexion que si la batterie est connectée à l'endroit, soit la diode de sortie se met en conduction lorsque la batterie est branchée et fait fondre un fusible de tête du réseau. Là aussi le réseau et le convertisseur sont protégés.  In the event of the battery connection being reversed, two scenarios may occur. Either the network is equipped with a battery disconnection box which validates the connection only if the battery is connected at the location, or the output diode turns on when the battery is connected and blows a head fuse of the network. Again the network and the converter are protected.

Concernant la ou les diodes zener Dl, un composant de choix pour réaliser leur fonction est la diode de redressement pour l'alternateur. Ce composant est en effet dimensionné pour tenir les chutes de charge appelés LOAD DUMP issus de l'alternateur. Cette diode permet de dissiper de l'énergie en avalanche, ce qui est primordial pour cette fonction.  Regarding the zener diode (s) Dl, a component of choice for performing their function is the rectifier diode for the alternator. This component is indeed sized to hold the load drops called LOAD DUMP from the alternator. This diode dissipates energy in an avalanche, which is essential for this function.

<Desc/Clms Page number 5> <Desc / Clms Page number 5>

Les figures 2A et 2B montrent un exemple avantageux de placement de la diode sur le convertisseur pour qu'il puisse dissiper cette énergie en avalanche. Les figures montrent le dissipateur 2 par exemple en aluminium du convertisseur, avec ses ailettes de refroidissement 3.  FIGS. 2A and 2B show an advantageous example of placing the diode on the converter so that it can dissipate this energy in an avalanche. The figures show the heatsink 2, for example made of aluminum, of the converter, with its cooling fins 3.

La diode d'écrêtage Dl est emmanchée dans le dissipateur, dans sa base 4, en 5. Le culot de la diode est relié à la masse, c'est-à-dire au dissipateur. La connexion de la diode est fixée par soudure électrique ou brasure sur le bus bar ou le circuit imprimé du convertisseur. Cette configuration permet d'intégrer la diode avec un minimum de changement sur le dissipateur.  The clipping diode D1 is fitted into the dissipator, in its base 4, at 5. The base of the diode is connected to ground, that is to say to the dissipator. The diode connection is fixed by electrical soldering or soldering on the bus bar or the converter printed circuit. This configuration makes it possible to integrate the diode with a minimum of change on the dissipator.

Dans cette position, la diode est refroidie et peut parfaitement résister aux contraintes auxquelles on lui demande de résister. In this position, the diode is cooled and can perfectly resist the stresses which it is asked to resist.

Concernant encore la protection du convertisseur du côté basse tension 14 volts, il est possible d'utiliser aussi des transistors MOSFET, comme du côté 42 volts.  Still concerning the protection of the converter on the low voltage side 14 volts, it is possible to also use MOSFET transistors, as on the side 42 volts.

Cependant, du côté 14 volts, le courant est trois fois plus important, ce qui nécessiterait alors l'utilisation de trois fois plus de transistors MOSFET, avec un impact sur le rendement également trois fois plus important. However, on the 14 volt side, the current is three times higher, which would then require the use of three times more MOSFET transistors, with an impact on the performance also three times greater.

Ceci produirait des surcoûts inacceptables pour une fonction qui correspond à un mode ne se produisant que très ponctuellement et résultant d'une mauvaise utilisation du système.This would produce unacceptable additional costs for a function which corresponds to a mode which occurs only very punctually and resulting from improper use of the system.

Claims (8)

REVENDICATIONS 1. Convertisseur de courant continu en courant continu (DC/DC), réversible, pour réseau à deux tensions, une tension continue élevée telle que 42 volts et une tension continue plus faible telle que 14 volts, le réseau comprenant des moyens de protection contre des surtensions, caractérisé en ce qu'il comprend des moyens de protection à la fois pour protéger le convertisseur (1) et la partie de réseau de faible tension, auquel il est susceptible d'être connecté contre des surtensions. 1. Reversible direct current to direct current (DC / DC) converter for a two-voltage network, a high direct voltage such as 42 volts and a lower direct voltage such as 14 volts, the network comprising means of protection against overvoltages, characterized in that it comprises protection means both for protecting the converter (1) and the low-voltage network part, to which it is capable of being connected against overvoltages. 2. Convertisseur selon la revendication 1, caractérisé en ce qu'il comprend du côté tension élevée un dispositif interrupteur (T3) monté en série dans le bus d'entrée et adapté pour permettre une inversion de la tension à ses bornes côté tension élevées.  2. Converter according to claim 1, characterized in that it comprises on the high voltage side a switch device (T3) mounted in series in the input bus and adapted to allow a reversal of the voltage at its terminals on the high voltage side. 3. Convertisseur selon la revendication 2, caractérisé en ce que le dispositif interrupteur (T3) comporte une électrode de commande auquel est appliqué un potentiel de blocage lors d'une inversion de la tension à ses bornes (B4) côté tension élevée.  3. Converter according to claim 2, characterized in that the switch device (T3) comprises a control electrode to which a blocking potential is applied during a reversal of the voltage across its terminals (B4) on the high voltage side. 4. Convertisseur selon l'une des revendications 2 ou 3, caractérisé en ce que le dispositif interrupteur (T3) comporte au moins un transistor MOSFET.  4. Converter according to one of claims 2 or 3, characterized in that the switch device (T3) comprises at least one MOSFET transistor. 5. Convertisseur selon la revendication 4, caractérisé en ce que le dispositif interrupteur (T3) comporte une pluralité de transistors MOSFET, montés en parallèle.  5. Converter according to claim 4, characterized in that the switch device (T3) comprises a plurality of MOSFET transistors, connected in parallel. 6. Convertisseur selon l'une des revendications 1 à 5, caractérisé en ce qu'il comporte, du côté de la tension plus faible au moins une diode zener (Dl) qui est disposée de façon anti-parallèle entre les bornes (Bf) et la masse (0) du convertisseur (1).  6. Converter according to one of claims 1 to 5, characterized in that it comprises, on the side of the lower voltage at least one zener diode (Dl) which is arranged anti-parallel between the terminals (Bf) and the mass (0) of the converter (1). 7. Convertisseur selon la revendication 6, caractérisé en ce que la diode zéner (Dl) est montée sur le dissipateur thermique (2) du convertisseur (1), le culot de la diode étant fixé sur le dissipateur.  7. Converter according to claim 6, characterized in that the zener diode (Dl) is mounted on the heat sink (2) of the converter (1), the base of the diode being fixed on the sink. <Desc/Clms Page number 7> <Desc / Clms Page number 7> 8. Réseau bitension d'alimentation en énergie électrique, notamment réseau bitension pour véhicule automobile, du type comprenant un convertisseur de tension continue en tension continue et des moyens de protection contre des surtensions, caractérisé en ce qu'il comporte un convertisseur selon l'une des revendications 1 à 7. 8. Two-voltage network for supplying electrical energy, in particular two-voltage network for a motor vehicle, of the type comprising a DC voltage to DC voltage converter and means for protection against overvoltage, characterized in that it comprises a converter according to the one of claims 1 to 7.
FR0115557A 2001-11-30 2001-11-30 DIRECT DIRECT CURRENT TO REVERSIBLE DIRECT CURRENT FOR TWO-VOLTAGE NETWORK AND TWO-VOLTAGE NETWORK PROVIDED WITH SUCH A CONVERTER Expired - Fee Related FR2833113B1 (en)

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Application Number Priority Date Filing Date Title
FR0115557A FR2833113B1 (en) 2001-11-30 2001-11-30 DIRECT DIRECT CURRENT TO REVERSIBLE DIRECT CURRENT FOR TWO-VOLTAGE NETWORK AND TWO-VOLTAGE NETWORK PROVIDED WITH SUCH A CONVERTER
DE2002156121 DE10256121A1 (en) 2001-11-30 2002-11-29 Switchable direct current converter for a two-voltage network and a two-voltage network equipped with such a converter

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FR0115557A FR2833113B1 (en) 2001-11-30 2001-11-30 DIRECT DIRECT CURRENT TO REVERSIBLE DIRECT CURRENT FOR TWO-VOLTAGE NETWORK AND TWO-VOLTAGE NETWORK PROVIDED WITH SUCH A CONVERTER

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FR2833113B1 FR2833113B1 (en) 2004-07-09

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EP1885049A1 (en) * 2006-07-27 2008-02-06 Robert Bosch Gmbh Power supply unit with combined up/down switch transducer
EP2206229A1 (en) * 2007-09-27 2010-07-14 voltwerk electronics GmbH Dc control unit for controlling an input voltage in a photovoltaic system
WO2012168469A1 (en) * 2011-06-10 2012-12-13 Narbonne Accessoires Stabilized dc electric power supply device with multiple outputs
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EP2844052A2 (en) 2013-08-27 2015-03-04 Valeo Equipements Electriques Moteur Power converter unit of an electric or hybrid vehicle

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EP2206229A1 (en) * 2007-09-27 2010-07-14 voltwerk electronics GmbH Dc control unit for controlling an input voltage in a photovoltaic system
WO2012168469A1 (en) * 2011-06-10 2012-12-13 Narbonne Accessoires Stabilized dc electric power supply device with multiple outputs
WO2014140452A1 (en) 2013-03-11 2014-09-18 Valeo Equipements Electriques Moteur Reversible dc-to-dc power converter, and corresponding method of production and use
EP2844052A2 (en) 2013-08-27 2015-03-04 Valeo Equipements Electriques Moteur Power converter unit of an electric or hybrid vehicle

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