WO2016166146A1 - Appareil de commande électroniques protégé contre les surtensions - Google Patents

Appareil de commande électroniques protégé contre les surtensions Download PDF

Info

Publication number
WO2016166146A1
WO2016166146A1 PCT/EP2016/058095 EP2016058095W WO2016166146A1 WO 2016166146 A1 WO2016166146 A1 WO 2016166146A1 EP 2016058095 W EP2016058095 W EP 2016058095W WO 2016166146 A1 WO2016166146 A1 WO 2016166146A1
Authority
WO
WIPO (PCT)
Prior art keywords
transistor
overvoltage
voltage
control
control device
Prior art date
Application number
PCT/EP2016/058095
Other languages
German (de)
English (en)
Inventor
Laszlo Molnar
Octavian Luca
Harald Schmauss
Bogdan DAN
Original Assignee
Continental Automotive Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Priority to CN201680021701.0A priority Critical patent/CN107431348B/zh
Publication of WO2016166146A1 publication Critical patent/WO2016166146A1/fr

Links

Classifications

    • 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
    • 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
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned

Definitions

  • the invention relates to an electronic control unit having an electronic component and to a protective circuit for protecting the component from an overvoltage.
  • ASIC English Application Specific inte- rated Circuit, ASIC English
  • ASIC English Application Specific inte- rated Circuit, ASIC English
  • such an electronic control unit is provided to determine and control the injection quantities and times for respective injectors of an internal combustion engine of the commercial and motor vehicle.
  • the building blocks are for use in a vehicle electrical system with a
  • Onboard voltage for commercial vehicles the electronic components that are designed for operation in vehicles with a lower vehicle electrical system voltage of 12 V, in the event of a short circuit with the commercial vehicle electrical system voltage (24 V) do not survive the overvoltage occurring.
  • an overvoltage protection circuit in which a controlled by a control transistor series transistor, which is connected in series with a fuse, is connected between the inputs and outputs of the protection circuit. The output is protected against a defined overvoltage at the input of the protection circuit.
  • the control transistor controls the series transistor so that it is turned off.
  • the fuse connected in series with the series transistor ensures that even an overcurrent can be kept away from the output. If the current is too high, the fuse trips.
  • Control unit is intended for use in a vehicle electrical system of a commercial vehicle, in which the supply voltage typically 24V.
  • the device provided in the control unit according to the invention is designed for operation in a control device for a supply voltage of 12 V. That is, the device is designed by its components and its internal protection mechanisms to operate at a voltage lower than the supply voltage in a commercial vehicle.
  • the electronic module is, for example, an application-specific inte grated ⁇ circuit (ASIC) for use in a motor vehicle.
  • ASIC application-specific inte grated ⁇ circuit
  • the protective circuit includes an input terminal for Ver ⁇ connection to an output terminal of the chip of the STEU ⁇ er réelles, wherein a control signal is applied to the input terminal through the block in the operation of the controller.
  • the protection circuit further comprises an output terminal for connection to a load.
  • the output terminal of the protection circuit can simultaneously represent the output of the electronic control unit.
  • the protection circuit is thus connected between the electronic component (ASIC) and the load.
  • the load may be an injector in the environment of motor vehicles or utility vehicles. Other loads can be controlled with an electronic control unit according to the invention.
  • the protection circuit further comprises an overvoltage detection unit with means for detecting an overvoltage at the output terminal, which provides a drive signal. Further, a protection switching unit having a controllable series transistor connected between the input terminal and the
  • Output terminal is connected, and a control transistor which, depending on the drive signal of the Matternapssde- tektionsiser the series transistor turns on or off, provided.
  • a control transistor which, depending on the drive signal of the Matternapssde- tektionsiser the series transistor turns on or off.
  • the protective switching unit comprises a first capacitor, which is connected between the input terminal and a reference potential of the protective switching unit or the control unit and which is designed such that during or shortly after the Sperrendsciens of the series transistor due to a detected at the output terminal overvoltage at the input terminal a in its height and minimum duration pre ⁇ given voltage pulse is generated, which can be detected by the block and processed to output an error signal.
  • the use of electronic components in an electronic control unit is possible if the controller is intended for operation in a vehicle electrical system with a high voltage, although the electronic module used in the control unit only has protection mechanisms for a smaller voltage range.
  • the electronic module used in the control unit only has protection mechanisms for a smaller voltage range.
  • existing internal protection mechanisms for detecting an overvoltage can be activated in the electronic module.
  • the electronic module regardless of the fact that the protection switching unit disconnects a connection of the block to the load, be converted into a safe state. In order to enable the protection mechanisms of the electronic device, it is not sufficient to just disconnect the electrical connection between the device output and the load.
  • the voltage applied to the output terminal of the module voltage at the moment of the occurrence of the error must be such that it is recognized as over ⁇ voltage, but the maximum allowable, specified voltage of the output terminal in any case may be exceeded.
  • This is caused by the generation of the predetermined voltage pulse by means of the measures provided in the protective ⁇ switching unit first capacitor, which ensures that the voltage pulse is sufficiently large, but smaller than the maximum allowable voltage value at the output terminal of the chip in its height and at the same time the voltage pulse for such a period of time at the output terminal that an internal logic of the device can reliably detect the case of overvoltage.
  • the height of the voltage pulse is larger by a predetermined amount than a supply voltage of the module and smaller than a maximum permissible voltage value at the output terminal of the module. More specifically, the magnitude of the voltage pulse is selected to be greater than 0.5V as the electronic device power supply voltage and less than 30V to 40V as the maximum allowable voltage level at the device's output terminal.
  • the stated maximum voltage value in the range of 30 V to 40 V is the typical maximum value for use in a 12 V electrical system of electronic components.
  • a second capacitor in the overvoltage detection unit is provided for setting the switching speed of the control transistor.
  • the second capacitor is suitably serially connected to a Zener diode of
  • Overvoltage detection unit interconnected, wherein the Se ⁇ rienscrien is provided between a control terminal of the control transistor and the reference potential for detecting the voltage at the output terminal.
  • the overvoltage is detected at the output terminal. If, at the output terminal, the occurring voltage is greater than a control voltage of the control transistor plus the
  • Zener voltage (breakdown voltage) of the zener diode is the Control transistor controlled such that this is a
  • the switching speed of the STEU ⁇ ertransistors can be adjusted by means of the second capacitor.
  • a resistor may be connected in parallel with the second capacitor, limiting the current flowing through the Zener diode in the event of an overvoltage.
  • the resistor thus contributes to adjusting the current flowing through the zener diode so that the zener diode is operated in its zener region.
  • the protection circuit may be connected in parallel with a diode. Through the diode transient negative pulses can be cut off. Positive transient pulses are cut off by the protection circuit itself. As a result, the protection circuit has a good electromagnetic behavior (EMC).
  • EMC electromagnetic behavior
  • Control transistor a bipolar transistor with a high
  • a resistor for driving the control transistor in the case of an overvoltage between its base and emitter is connected. In the event of an overvoltage at the output terminal, this resistor activates the bipolar transistor (control transistor). The determined by the resistance base current in this case represents the riding ⁇ be provided by the overvoltage detection unit drive signal.
  • a third capacitor is connected between the input terminal and a control terminal of the series transistor, through which the Speed of Sperrendschalts the series transistor is adjustable.
  • the third capacitor makes it possible to compensate for variations in the production of variations in the internal capacitance of the series transistor for various series transistors used in different electronic controllers.
  • the capacitance value of the third capacitor is substantially greater than the internal capacitance of the longitudinal ⁇ transistor, thereby ensuring that a desired turn-on and turn-off of the L josstran ⁇ sistor is made possible. This is expedient in order to be able to generate the voltage pulse described above at the input terminal of the protective circuit in the desired manner.
  • another advantageous embodiment is a
  • Over-voltage can be supplied. This makes it possible for the electronic module, at a time when it is not able to detect the voltage pulse applied to the output terminal of the module due to the control signal currently applied to its output terminal, be aware of the
  • 1 is a schematic representation of an electronic control device according to the invention for the parallel control of exemplary four loads
  • 2 is a schematic representation of an electronic control device according to the invention, in which the structure of a protection circuit according to the invention for driving a single load is shown
  • Fig. 3 is an electrical block diagram of a fiction, ⁇ contemporary electronic control unit to control a single load, the time course of the voltage at nowadayssan- the protection circuit connection when an overvoltage occurs as a function of the dimensioning of a first capacitor of the protection circuit, the time course of effect on Voltage at the input terminal of the protective voltage as a function of the dimensioning of a second capacitor in an overvoltage detection unit, the effect on the time course of the voltage at the input terminal of the protective circuit according to the invention in response to a third capacitor in the protective switching unit.
  • Fig. 1 shows a schematic representation of a modern fiction, ⁇ electronic controller 1000.
  • the electronic controller 1000 will be referred to as Electronic Control Unit (ECU). It is intended for use in a vehicle electrical system of a commercial vehicle.
  • ECU Electronic Control Unit
  • the rated vehicle electrical system voltage of commercial vehicles is currently 48 V.
  • the electronic control unit 1000 serves as an example for the control of four (generally a number) in Fig. 1, not shown ignition coils. From the perspective of the electronic controller 1000, a respective ignition coil constitutes a load. The loads are connected to a connector 1010.
  • the electronic control unit 1000 comprises an electronic module 200 in the form of an application-specific inte- Integrated Circuit (Application Specific Integrated Circuit, ASIC).
  • the electronic module 200 is designed for operation in a control unit for use in a vehicle electrical system of a motor vehicle, wherein the nominal vehicle electrical system voltage of a motor vehicle is 12 V.
  • the nominal vehicle electrical system voltage of a motor vehicle is 12 V.
  • an overvoltage due to a failure may occur in that a line connected to a respective load comes into contact with a power supply line.
  • the electronic component 200 which is designed for operation with a lower supply voltage, may suffer damage without further measures.
  • the electronic control unit 1000 in addition to the electronic device 200 includes a number of protection circuits 100a, 100d.
  • the respective protection circuits 100a, 100d are arranged between a respective output terminal of the controller 1000 connected to an associated load and an output of the electronic device 200.
  • Fig. 2 shows a further schematic representation of a he ⁇ inventive electronic control unit 1000, where the configuration of the protection circuit 100 is executed (representative of the protection circuits 100a, 100b, 100c, lood) closer for connecting to a single load 300th It is understood that the protection circuit 100 shown in Fig. 2 must be provided in a corresponding manner for each to be connected to the control unit 1000 load.
  • the protection circuit 100 includes a protection circuit unit 110, an excess voltage detection unit 120 as well as an optional diagnostic unit 130.
  • the protection ⁇ switching unit 110 is disposed between an input terminal 101 and an output terminal 102 of the protection circuit 100th
  • the protective switching unit 110 comprises a controllable series transistor not shown in detail in FIG.
  • Input terminal 101 and the output terminal 102 is connected.
  • the output terminal 102 of the protection circuit 100 simultaneously represents an output terminal of the controller 1000, which is represented by a connector 1010, for example.
  • the input terminal 101 of the protection circuit 100 is connected to an output terminal 202 of the electronic module 200.
  • a control signal DRV is generated by the module 200, which is transmitted to the load 300 through the protective circuit 100 when the series-connected, series transistor of the protective switching unit 110 is switched on.
  • the control signal DRV is a periodic signal to periodically turn the load 300 on and off.
  • the overvoltage detection unit 120 is equipped with means for detecting an overvoltage at the output terminal 102. It is designed to switch via a drive signal to the series transistor of the protective switching unit conductive or blocking. Asperrendexcellent the series transistor is carried out when the output terminal 102 of the
  • Protection circuit 100 an overvoltage is detected.
  • An overvoltage at the output terminal 102 occurs, for example, when a line 310 connecting the output terminal 102 to the load 300 is connected to the supply voltage of the commercial vehicle, e.g. due to an error in contact, i. a short circuit occurs.
  • the coupled to said overvoltage detection unit 120 diagnostic unit 130 are in the case of the detection of a signal at the off ⁇ input terminal 102 of the protection circuit occurring overvoltage, which is evaluated by an arithmetic unit 400 (eg, a microcontroller) and transmitted to the block 200th Irrespective of an internal diagnostic logic of the overvoltage detection module 200, the arithmetic unit 400 informs it of the presence of an overvoltage at the output terminal 102, whereupon the module 200 can switch off the control signal for the load 300.
  • an arithmetic unit 400 eg, a microcontroller
  • the electronic module 200 comprises two serially connected between a voltage source 40 and interconnected to a reference potential of semiconductor switching elements 210, 220.
  • a connection point Zvi ⁇ rule the two switching elements 210, 220 is connected to the output terminal 202 of the block 200th
  • the series ⁇ circuit of the two switching elements 210, 220 forms a push-pull stage, through which the output terminal 202 can be connected either to the provided by a voltage source 240 voltage Vcc or another potential.
  • the voltage Vcc provided by the voltage source 240 is generally much smaller than the vehicle electrical system voltage, since the voltage provided at the output terminal 202 is merely a drive signal.
  • a diode 230 is connected as a protective diode (back ⁇ supply protection). Furthermore, the electronic module 200 comprises a first driver 211 and a second driver 221.
  • the first driver 211 provides at its output information about the switching state of the switching element 210, the function of which will be described below.
  • the second driver 221 controls the switching state of the second, connected to reference potential switching element (low side switching element).
  • the output terminal 202 of the module 200 is connected to the input terminal 101 of the protection circuit 100.
  • the input terminal 101 provides an input 111 of the protection ⁇ switching unit 110.
  • the protective circuit unit 110 by way of example comprises a series transistor a normally-off p-channel MOSFET (Metal Oxide Semiconductor Field oxide transistor) having its drain terminal D to the terminal 101 and its Sour. - ce terminal S is connected to an output 112 of the protective switching unit 110. Between the drain terminal D and the gate terminal G of the series transistor Tl, a capacitor C16 is connected.
  • the voltage measuring device connected between the source terminal S and the gate terminal G serves merely to verify the mode of operation and is at one real protection switching unit 110 is not required or seen before ⁇ .
  • the gate terminal G of the series transistor Tl is further connected via a resistor R24 to the reference potential of the elekt ⁇ ronic control device. Between the input terminal 111 and the reference potential, a further capacitor C13 is also connected. All of the reference potentials shown in FIG. 3 have the same potential.
  • a control transistor T2 in the form of a bipolar transistor is connected between the source terminal S of the series transistor T1 or the output 112 and the gate terminal G of the series transistor T1.
  • the emitter E of the control transistor T2 is connected to the source terminal S and the collector K to the gate terminal G of the series transistor Tl.
  • the base B of the control transistor T2 receives a drive signal STS from the overvoltage detection unit 120 described below.
  • the overvoltage detection unit 120 includes, as the voltage detecting element at the output terminal 102, a Zener diode Dzl and a capacitor C15 connected between an anode terminal of the Zener diode Dzl and the reference potential. In parallel with the capacitor C15, a resistor R26 is connected between the node between the Zener diode Dzl and the capacitor C15 and the reference potential. The cathode terminal of the Zener diode Dzl is connected via a resistor R25 to the input of the overvoltage detection unit 120. The input 121 is directly connected to the output 122 of the overvoltage detection unit 120.
  • a series circuit of diodes Dl, D2 is connected, wherein the cathode terminal of the diode Dl is connected to the input 121 and output 122 of the overvoltage detection unit 120.
  • the anode terminal of the diode D2 is connected to a node connected to the control output 123 at which the drive signal STS is output.
  • the node point is formed between the cathode terminal of the Zener diode Dzl the resistor R25 and the anode terminal of the diode D2.
  • the output 122 of the overvoltage detection unit 120 is connected to the output terminal 102 of the protection circuit 100 via an optional resistor R20. Between the output terminal 102 and the reference potential, a likewise optional capacitor C6 is connected. Between the junction of
  • Output 122 of overvoltage detection unit 120 and resistor R20 and the reference potential is connected to a diode D3, whose anode terminal is connected to the reference potential and whose cathode terminal is connected to said node.
  • the diagnostic unit 130 comprises an AD converter 134, which converts the analog signal applied to the input 131 into a digital signal and supplies it to a first input of an AND gate 135.
  • the second input of the AND gate 135 is connected to an input 133 of the diagnostic unit 130.
  • the input 133 receives the signal output by the driver 211 of the device 200 and is connected thereto for this purpose.
  • the output of the AND gate 135 is connected to an output 132 of the diagnostic unit 130. This is connected to an input 206 of the module 200, which is connected inside the module with a computing unit.
  • Protection circuit 100 is referred to.
  • a current measuring source is connected to the measuring point "3", with which the current I_DRV is detected and which is present only to describe the functionality of the protection circuit 100.
  • the switching element 210 is closed and the switching element 220 is closed. opens, ie at the output terminal 201 is a logic signal "high".
  • the series transistor Tl is controlled itself and begins to conduct. If the output terminal 102 (measuring point "1"), the voltage to ⁇ gur the Zener voltage of diode DZL is higher than the base-emitter voltage of the control transistor T2 (VBE, T2 + V DZ I), the control transistor begins to conduct to T2, whereby the series transistor Tl conducts slightly less until it is finally turned off.
  • the output terminal 202 of the module 200 is protected from the overvoltage by the output terminal 102 (measuring point "1", which now has an overvoltage).
  • the capacitor C13 constitutes a so-called diagnostic capacitor. This is because the voltage at the measuring point "3", i. at the output terminal 202 of the device or input terminal 101 of the protection circuit 100 rises to a certain threshold defined by the capacitors C15 and C16, while the series transistor Tl is completely blocked by the control transistor T2. This threshold of the voltage pulse produced at the output terminal 202 must be lower than the maximum voltage permitted at the output terminal 202.
  • the module 200 has an internal overvoltage detection unit 120 for detecting a short circuit to the supply voltage of the vehicle electrical system. In order for this diagnosis can appeal to ⁇ , is "stored” for a short time by the capacitor C13, a voltage pulse, so that they can de- internal tektionsmother the block 200 (not shown) detect the over ⁇ tension. This internal overvoltage detection unit is passed through the module 200 without further
  • the voltage pulse is shaped in amplitude and in duration for a safe period of time. This means that it must be greater than the minimum overvoltage detection threshold (eg 0.5 V plus the supply voltage Vcc of the voltage source 210). of the device 200 and less than the maximum allowable voltage at the output 202 (typically between 30V and 40V).
  • the minimum time duration is 200 ms, for example. For this reason, it is necessary to shape the voltage pulse so as to satisfy these conditions.
  • the effect of the dimensioning of the capacitor C13 is shown in FIG. 4, the temporal profiles of three signals CMD_D, SC and DS as well as the voltage U_DRV present at the measuring point "3" and the gate-source voltage U G s of the series transistor T1 are shown one above the other.
  • the signal CMD_D is the control signal for the switching element 210. If the switching element 210 is opened, a signal is logical "0", the switching element 210 is closed by the control signal CMD_D, a signal is logic "1", ie the output terminal 202 of Module 200 and thus the measuring point "3" is connected to the supply voltage Vcc of the voltage source 240.
  • the signal SC assumes the state logic "0" when at the output of the protection circuit 100, ie the measuring point "1" no short circuit and thus no
  • the signal SC is logic "1" in the event of a short circuit, i. if an overvoltage is present at measuring point "1".
  • the signal SC is nowhere transmitted or generated in the electronic circuit shown in FIG. 3, it merely serves to illustrate the operation.
  • the signal DS is the diagnostic signal supplied by the diagnostic unit 130 to the module 200.
  • switching element 210 changes state from off-state to closed, causing CMD_D to change state from logic "0" to logic "1".
  • CMD_D As already be ⁇ wrote the series transistor Tl at time t begins to conduct, as the gate-source voltage U GS can be removed.
  • Vcc the voltage at the input terminal of the
  • Protection circuit 100 to Vcc which can be taken from the waveform of U_DRV.
  • a short circuit occurs at measuring point "1", ie at output 102 of protective circuit 100, ie signal SC changes from logic "0" to logic "1".
  • the voltage U-DRV at the measuring point "3" increases due to the presence of the capacitor C13.
  • the diagnostic unit 130 outputs the signal DS by changing the value from logic "0" to logic "1", whereby the module 200 compulsorily turns off regardless of its internal diagnosis mentioned above.
  • the switching element 210 is opened, that is, the signal CMD_D assumes the value logic "0".
  • Protection switching unit 110 is turned off, i. its gate-source voltage goes back to the value 0.
  • control transistor T2 switch the series transistor Tl in the case of a short circuit of the terminal from ⁇ gear 102 with the supply voltage (battery) off.
  • the amplitude of the pulse generated with the power cycle (see the timing chart of U_DRV) which is stored by the capacitor C13 can be adjusted by the Wennge ⁇ speed of the control transistor T2.
  • the switching speed of the control transistor T2 is increased by the presence of the capacitor C15 in the overvoltage detection unit 120.
  • the control transistor T2 it is expedient for the control transistor T2 to have a high current amplification factor ⁇ .
  • the effect of the presence of the capacitor C15 can be qualitatively seen in FIG.
  • the time course of the signals CMD_D, SC and DS is shown, together with the time course of the voltage U_DRV and the current I_DRV at the measuring point "3" and the gate-source voltage of the series transistor Tl.
  • the voltage U_DRV at the measuring point "3" again is shown by way of example for four different dimensions of the capacitor C15, the different dimensions being represented by C15-1, C15-2, C15-3 and C15-4. If the value of the capacitor C15 is set too low (C15-1), the voltage at the output terminal 202 exceeds the maximum allowable voltage, moreover, the series transistor Tl is turned off too slowly. At a high dimensioning the maximum permissible voltage at starting terminal 202 is not exceeded (for example, C15-4) turning off at the same time with increasing capacitance value ⁇ be accelerated.
  • the capacitor C16 is provided in the protective switching unit 110 between the drain terminal D and the gate terminal G of the series transistor T1. Too fast switching off of the series transistor Tl leads to a too low voltage pulse, too slow switching off leads to a large voltage pulse at the measuring point "3", as can be seen from the time profiles of FIG.
  • Resistor R20 is a current limiter. Resistor R20 is optional. It makes sense with regard to a current limitation with negative voltages at the output terminal 102.
  • the resistor R25 serves to control the bipolar transistor T2 in the event of an overvoltage at the output terminal 102.
  • the resistor R26 ensures that the zener diode Dzl operates in its zener region.
  • the resistor R24 limits the Kol ⁇ lecturer current of the control transistor T2 and represents a reference ⁇ reference for the gate of the pass transistor Tl.
  • the internal diagnostics of the device 200 at the output terminal 202 of the device can not detect the overvoltage.
  • the output terminal 202 is nevertheless protected by the already described function of the protection circuit 100, since the series transistor Tl the Connection between the output terminal 202 and the output terminal 102 has separated.
  • the overvoltage is detected and supplied to the diagnostic unit 130. This digitizes the voltage which occurs due to the overvoltage at the junction of the resistors R18 and R19 and supplies them to the AND gate 135.
  • the second input of the AND gate 135 receives the information about the switching state of the switching element 210 of the block 200. By processing these two pieces of information in the described situation (switching element 210 is turned off, switching element 220 is conductive), the block 200 receives the information about the presence of an overvoltage.
  • the device 200 is thus enabled to distinguish between an overvoltage and an open load (English: Open Load).
  • the signal DS is thus used to inform the module 200 of the presence of an overvoltage at the output terminal 202.

Landscapes

  • Protection Of Static Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un appareil de commande électronique (1000) qui comporte un composant électronique (200) protégé contre une surtension (200) par un circuit de protection (100). Celui-ci comporte une borne d'entrée (101) destinée à être reliée à une borne de sortie (202) du composant (200), une borne de sortie (102) destinée à être reliée à une charge (300), une unité de détection de surtension (120), une unité de commutation de protection (110) comportant un transistor commandable à passage longitudinal (T1) qui est monté entre la borne d'entrée (101) et la borne de sortie (102), et un transistor de commande (T2) qui commute le transistor à passage longitudinal (T1) dans le sens passant ou bloquant en fonction du signal de commande (STS) de l'unité de détection de surtension (120). L'unité de commutation de protection (110) comprend un premier condensateur (C13) qui est monté entre la borne d'entrée (101) et un potentiel de référence et qui est conçu de telle sorte que, pendant ou peu après la commutation dans le sens bloquant du transistor à passage longitudinal (T1) due à une surtension détectée au niveau de la borne de sortie (102), une impulsion de tension d'amplitude et de durée minimale prédéterminées est générée au niveau de la borne d'entrée (101), laquelle impulsion peut être détectée par le composant (200) et traitée pour délivrer un signal d'erreur.
PCT/EP2016/058095 2015-04-15 2016-04-13 Appareil de commande électroniques protégé contre les surtensions WO2016166146A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680021701.0A CN107431348B (zh) 2015-04-15 2016-04-13 被保护免受过压的电子控制设备

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP15465509.6 2015-04-15
EP15465509 2015-04-15
DE102015207783.7A DE102015207783B4 (de) 2015-04-15 2015-04-28 Gegen Überspannung geschütztes elektronisches Steuergerät
DE102015207783.7 2015-04-28

Publications (1)

Publication Number Publication Date
WO2016166146A1 true WO2016166146A1 (fr) 2016-10-20

Family

ID=53373379

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/058095 WO2016166146A1 (fr) 2015-04-15 2016-04-13 Appareil de commande électroniques protégé contre les surtensions

Country Status (3)

Country Link
CN (1) CN107431348B (fr)
DE (1) DE102015207783B4 (fr)
WO (1) WO2016166146A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114944065A (zh) * 2022-04-06 2022-08-26 成都臻识科技发展有限公司 一种带电源管理系统的动态交通违法抓拍设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018204781A1 (de) 2018-03-28 2019-10-02 Robert Bosch Gmbh Spannungsschutz für einen Anschluss eines Steuergeräts
DE102018213902A1 (de) * 2018-08-17 2020-02-20 Continental Automotive Gmbh Gegen Angriffe gesicherte Netzwerkschnittstelle
DE102019203085A1 (de) * 2019-03-06 2020-09-10 Vitesco Technologies GmbH Steuergerät zum Betätigen einer Last und Verfahren zum Betreiben eines solchen Steuergeräts

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19964097A1 (de) * 1999-12-31 2001-07-26 Nokia Mobile Phones Ltd Schutzschaltung für eine elektronische Einheit gegen länger anhaltende Überspannung
DE10232941A1 (de) * 2002-07-19 2004-02-12 Siemens Ag Sensor-Schutzschaltung
US20140002941A1 (en) 2012-06-28 2014-01-02 Trimble Navigation Limited Overvoltage protection circuit with self biased latch
DE102013108302A1 (de) * 2012-08-08 2014-02-13 Analog Devices Inc. Vorrichtung und Verfahren zum Verstärkerfehlerschutz

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202042887U (zh) * 2011-05-03 2011-11-16 深圳Tcl新技术有限公司 一种充电输入过压保护电路
CN203734283U (zh) * 2013-10-28 2014-07-23 西安Tcl软件开发有限公司 电源保护电路及电源装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19964097A1 (de) * 1999-12-31 2001-07-26 Nokia Mobile Phones Ltd Schutzschaltung für eine elektronische Einheit gegen länger anhaltende Überspannung
DE10232941A1 (de) * 2002-07-19 2004-02-12 Siemens Ag Sensor-Schutzschaltung
US20140002941A1 (en) 2012-06-28 2014-01-02 Trimble Navigation Limited Overvoltage protection circuit with self biased latch
DE102013108302A1 (de) * 2012-08-08 2014-02-13 Analog Devices Inc. Vorrichtung und Verfahren zum Verstärkerfehlerschutz

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114944065A (zh) * 2022-04-06 2022-08-26 成都臻识科技发展有限公司 一种带电源管理系统的动态交通违法抓拍设备

Also Published As

Publication number Publication date
DE102015207783B4 (de) 2019-01-31
CN107431348B (zh) 2019-06-18
CN107431348A (zh) 2017-12-01
DE102015207783A1 (de) 2016-10-20

Similar Documents

Publication Publication Date Title
DE112012007241B4 (de) Ansteuerschutzschaltung, Halbleitermodul und Kraftfahrzeug
DE10245484B4 (de) Verfahren zur Ansteuerung eines Halbleiterschalters und Schaltungsanordnung mit einem Halbleiterschalter
DE102012108912A1 (de) Diagnose von Überstrombedingungen in Steuerungen bipolarer Motoren
DE112017003368T5 (de) Treiberschaltung und leistungsmodul mit derselben
EP0490079A2 (fr) Dispositif protecteur contre la surtension
DE102014114716A1 (de) Überwachungsvorrichtung für einen Leistungsversorgungsstrom
DE19728783A1 (de) Überspannungsschutzschaltung, insbesondere für Eingänge integrierter Schaltungen
WO2016166146A1 (fr) Appareil de commande électroniques protégé contre les surtensions
DE102012218914A1 (de) Schutzschaltungsanordnung für ein Mehrspannungsnetz
EP2342824B1 (fr) Circuit en demi-pont protégé contre les courts-circuits avec commutateurs semiconducteurs
DE102014001749A1 (de) Schutzvorrichtung für eine Stromversorgung
EP0314681B1 (fr) Etage final de circuit a pont
DE102015107718A1 (de) Vorrichtung und Verfahren zum Absichern einer Bordnetz-Komponente eines Fahrzeug-Bordnetzes
EP2858194A2 (fr) Circuit électronique
DE202014003691U1 (de) Lastüberwachung mittels einer Überstromschutzeinrichtung
DE102014219130B4 (de) Diagnoseschaltung und Verfahren zum Betreiben einer Diagnoseschaltung
WO2005055387A1 (fr) Ensemble circuit et procede de commande d'un consommateur inductif
DE10232941B4 (de) KFZ-Bordnetz mit einer Sensor-Schutzschaltung
DE102015104275A1 (de) Absicherungsvorrichtung und absicherungsverfahren für ein fahrzeug-bordnetz und damit ausgestattetes fahrzeug-bordnetz
EP3063871B1 (fr) Circuit de protection contre des surtensions pour un semi-conducteur de puissance et procédé de protection d'un semi-conducteur de puissance contre des surtensions
EP1714368B1 (fr) Circuit de protection contre toute surcharge d'un element commutateur controlable
EP2733556A2 (fr) Dispositif lié à la sécurité pour la commutation sûre d'une charge électrique
DE102016121447A1 (de) Vorrichtung und Verfahren zum Absichern einer Bordnetzkomponente eines Fahrzeug-Bordnetzes
DE4439967A1 (de) Schaltungsanordnung zum Schutz vor energiereichen Überspannungen
DE102009053653A1 (de) Schaltungsanordnung für eine Spannungsbegrenzungsschaltung zum Schutz eines Steuergeräts vor Überspannungen

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16717330

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16717330

Country of ref document: EP

Kind code of ref document: A1