WO2023079975A1 - 制御装置 - Google Patents
制御装置 Download PDFInfo
- Publication number
- WO2023079975A1 WO2023079975A1 PCT/JP2022/039204 JP2022039204W WO2023079975A1 WO 2023079975 A1 WO2023079975 A1 WO 2023079975A1 JP 2022039204 W JP2022039204 W JP 2022039204W WO 2023079975 A1 WO2023079975 A1 WO 2023079975A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- terminal
- switch
- circuit
- power supply
- Prior art date
Links
- 239000000758 substrate Substances 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 11
- 239000004020 conductor Substances 0.000 description 41
- 230000001939 inductive effect Effects 0.000 description 31
- 238000010586 diagram Methods 0.000 description 12
- 230000003071 parasitic effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000007704 transition Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
-
- 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
- H02H7/20—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 electronic equipment
Definitions
- Patent Document 1 discloses a control device that controls power supply from a power supply to a load.
- a switch is arranged in the current path of the current flowing from the power supply to the load.
- the switch is turned on or off according to a signal output by an IC (Integrated Circuit).
- the IC is connected to the positive terminal of the power supply and the ground terminal.
- the ground terminal is connected to ground. From the positive terminal of the power supply, the current flows through the IC, the ground terminal, and the ground in that order. This supplies power to the IC.
- a control device is a control device for a vehicle, and includes a processor that executes processing and a current path of current flowing through the processor that is disposed downstream of the processor. a diode whose anode is connected to a connection node between the processor and the first terminal; a connection switch whose one end is connected to the cathode of the diode; and the other end of the connection switch. a second terminal; and a switching circuit that switches the connection switch from off to on when the voltage of the first terminal with the potential of the second terminal as a reference potential rises to a value equal to or higher than a threshold.
- FIG. 2 is a block diagram showing the configuration of main parts of the power supply system 1 according to Embodiment 1.
- FIG. It is a circuit diagram of a control device. 4 is a timing chart for explaining power supply control processing; It is a circuit diagram of a switching circuit. 4 is a timing chart for explaining the operation of the switching circuit;
- FIG. 4 is an explanatory diagram of the layout of the components of the control device;
- FIG. 7 is a circuit diagram of a control device according to Embodiment 2; It is a circuit diagram of a switching circuit. 4 is a timing chart for explaining the operation of the switching circuit;
- Patent Literature 1 when the connection between the ground terminal and the ground is disconnected, the voltage of the ground terminal increases with the potential of the ground as the reference potential. When the voltage of the ground terminal with the ground potential as the reference potential rises, the voltage applied to the IC drops. If the voltage drop is large, the IC may not operate properly.
- An object of the present disclosure is to provide a control device that suppresses an increase in voltage at a terminal arranged downstream of a processor in a current path that flows through the processor that executes processing.
- a control device is a control device for a vehicle, and includes a processor that executes processing, and a downstream side of the processor in a current path of current flowing through the processor. a diode whose anode is connected to a connection node between the processor and the first terminal; a connection switch whose one end is connected to the cathode of the diode; A second terminal to be connected, and a switching circuit that switches the connection switch from off to on when the voltage of the first terminal with the potential of the second terminal as a reference potential rises to a value equal to or higher than a threshold.
- each of the first terminal and the second terminal is connected to a common conductor.
- Current flows through the processor, the first terminal and the conductor in that order to power the processor.
- the voltage of the first terminal with the potential of the second terminal as the reference potential rises.
- the switching circuit turns on the connection switch.
- the connection switch is on, current flows through the processor, the diode, the connection switch, the second terminal and the conductor in that order.
- the voltage of the first terminal with the potential of the second terminal as the reference potential is a forward voltage. Therefore, even when the voltage of the first terminal with the potential of the second terminal as the reference potential rises, the voltage of the first terminal with the potential of the second terminal as the reference potential is the threshold and the forward voltage. A large voltage is not exceeded and is suppressed.
- a control device includes a power supply switch arranged in a power supply path from a DC power supply to a load, and the processor instructs switching on or off of the power supply switch.
- the processor controls power supply from the DC power supply to the load by instructing switching on or off of the power supply switch.
- a control device includes a first substrate on which the processor is arranged, and a second substrate on which the power supply switch is arranged, unlike the first substrate.
- the processor and the power supply switch are arranged on the first substrate and the second substrate, respectively. Therefore, by changing the second substrate, the power supply switch can be changed without changing the processor.
- a control device includes a second diode whose cathode is connected to a connection node between the power supply switch and the load, an anode of the second diode, and the second terminal. and a second connection switch connected therebetween, the load having an inductor.
- energy is stored in the inductor of the load while power is being supplied to the load.
- the second connection switch when the second connection switch is on, the current flows from the one end of the load to the conductor, the second terminal, the second connection switch, the second diode and the other end of the load. This releases the energy stored in the inductor.
- the processor instructs to turn on the second connection switch when instructing to turn on the power supply switch, and instructs to turn on the power supply switch. is instructed to turn off the second connection switch.
- the DC power supply through the power supply switch Power is supplied to the load.
- Energy is stored in the inductor of the load. The energy stored in the inductor is released when the feed switch and the second connection switch are turned off and off respectively.
- a control device includes a regulator that steps down a power supply voltage of a DC power supply using the potential of the first terminal as a reference potential to a target voltage and applies the target voltage to the processor. and the switching circuit switches the connection switch from OFF to ON in a state where the power supply voltage is equal to or higher than the target voltage.
- the switching circuit switches the connection switch from off to on before the power supply voltage with the potential of the first terminal as the reference potential drops to a value less than the target voltage. Therefore, even when the voltage of the first terminal with the potential of the second terminal as the reference potential rises, the regulator continues to apply the target voltage to the processor.
- the control device includes a resistor having one end connected to the second terminal, the connection switch has a control end, and the other end of the resistor is the
- the connection switch is connected to a control end, and is switched from off to on when the voltage of the control end with the potential of the second terminal as a reference potential rises to a value equal to or higher than a predetermined voltage
- the switching circuit is configured to: a circuit switch having an input end to which a current is input and an output end to which a current is output; the output end of the circuit switch is connected to the control end of the connection switch; A circuit voltage is applied to the input terminal, and the circuit switch is turned on from off when the voltage of the first terminal with the potential of the second terminal as a reference potential rises to a value equal to or higher than the threshold. switch.
- the circuit switch when the voltage of the first terminal with the potential of the second terminal as the reference potential rises to a value equal to or higher than the threshold, the circuit switch is switched from off to on.
- the circuit switch When the circuit switch is on, current flows through the circuit switch, the resistor and the second terminal in that order. This causes a voltage drop across the resistor.
- the voltage of the control terminal with the potential of the second terminal as the reference potential rises to a value equal to or higher than the predetermined voltage, and the connection switch is switched from off to on.
- the circuit switch has a second control terminal, and the circuit switch has a potential of the input terminal as a reference potential.
- the switching circuit is on when the voltage is less than or equal to a second predetermined voltage, and the switching circuit includes a circuit resistor connected between the input end of the circuit switch and a second control end, and the second control end of the circuit switch. and a second circuit switch connected between the second terminals, wherein the second circuit switch controls the voltage of the first terminal with the potential of the second terminal as a reference potential rises to a value equal to or greater than the threshold, it switches from off to on.
- the second circuit switch when the voltage of the first terminal using the potential of the second terminal as a reference potential rises to a value equal to or higher than the threshold, the second circuit switch is switched from off to on.
- the second circuit switch When the second circuit switch is on, current flows through the circuit resistance, the second circuit switch and the second terminal in that order, creating a voltage drop across the circuit resistance.
- the voltage of the second control terminal with the potential of the input terminal as the reference potential drops to a value equal to or lower than the second predetermined voltage, and the circuit switch is turned on.
- a control device includes a voltage detection circuit that detects a power supply voltage of a DC power supply using the potential of the first terminal as a reference potential, and the switching circuit is detected by the voltage detection circuit.
- the connection switch is turned on from off. switch to
- the power supply voltage with the potential of the first terminal as the reference potential drops.
- the switch toggles from off to on. Therefore, the connection switch is switched from OFF to ON when there is a high possibility that the voltage at the first terminal has increased.
- FIG. 1 is a block diagram showing the main configuration of a power supply system 1 according to Embodiment 1.
- a power supply system 1 is mounted on a vehicle M.
- a power supply system 1 includes a DC power supply 10 , a control device 11 , an inductive load 12 and a ground conductor 13 .
- DC power supply 10 is, for example, a battery.
- the inductive load 12 has an inductor 12a and is, for example, a motor.
- the ground conductor 13 is the body of the vehicle M, for example. Grounding is achieved by connection to the ground conductor 13 .
- the positive electrode of the DC power supply 10 is connected to the control device 11 .
- Controller 11 is further connected to one end of inductive load 12 and ground conductor 13 .
- the other end of inductive load 12 and the negative electrode of DC power supply 10 are connected to ground conductor 13 .
- the control device 11 has a power supply switch 20 (see FIG. 2).
- the power supply switch 20 When the power supply switch 20 is switched from off to on, current flows from the positive electrode of the DC power supply 10 through the power supply switch 20 , the inductive load 12 and the ground conductor 13 in this order, and power is supplied to the inductive load 12 .
- the inductive load 12 When the inductive load 12 is powered, the inductive load 12 operates.
- a power supply switch 20 is arranged on a power supply path from the DC power supply 10 to the inductive load 12 .
- the control device 11 controls power supply from the DC power supply 10 to the inductive load 12 via the power supply switch 20 by switching the power supply switch 20 on or off.
- FIG. 2 is a circuit diagram of the control device 11.
- the control device 11 includes a discharge switch 21 , a connection switch 22 , power supply resistors 23 and 24 , discharge resistors 25 and 26 , connection resistors 27 and 28 , a regulator 29 , a microcomputer (hereinafter referred to as microcomputer) 30 .
- a drive circuit 31 an inverter 32, a discharge diode 33, a connection diode 34, a switching circuit 35, a first terminal G1, a second terminal G2, a power supply terminal Gb and a load terminal Gf.
- the first terminal G ⁇ b>1 and the second terminal G ⁇ b>2 are connected to the ground conductor 13 .
- a power terminal Gb is connected to the positive electrode of the DC power supply 10 .
- One end of the inductive load 12 is connected to the load terminal Gf. As described above, the other end of inductive load 12 is connected to ground conductor 13 .
- the inductive load 12, the first terminal G1 and the second terminal G2 are connected to three positions on the ground conductor 13, respectively. At least two of the inductive load 12 , the first terminal G ⁇ b>1 and the second terminal G ⁇ b>2 may be connected to a common position on the ground conductor 13 .
- Each of the power supply switch 20, the discharge switch 21, and the connection switch 22 is an N-channel FET (Field Effect Transistor).
- a parasitic diode 20a is formed.
- the cathode and anode of the parasitic diode 20a are connected to the drain and source of the power supply switch 20, respectively.
- a feed resistor 23 is connected between the gate and source of the feed switch 20 .
- the gate of the power supply switch 20 is further connected to one end of the power supply resistor 24 .
- a parasitic diode 21a is formed.
- the cathode and anode of the parasitic diode 21a are connected to the drain and source of the discharge switch 21, respectively.
- a discharge resistor 25 is connected between the gate and source of the discharge switch 21 .
- One end of a discharge resistor 26 is also connected to the gate of the discharge switch 21 .
- a parasitic diode 22a is formed.
- the cathode and anode of the parasitic diode 22a are connected to the drain and source of the connection switch 22, respectively.
- a connection resistor 27 is connected between the gate and source of the connection switch 22 .
- One end of a connection resistor 28 is further connected to the gate of the connection switch 22 .
- the drain and source of the power supply switch 20 are connected to the power supply terminal Gb and the load terminal Gf, respectively.
- the drain of power switch 20 is also connected to regulator 29 .
- the regulator 29 is further connected to the microcomputer 30 and the first terminal G1.
- the drive circuit 31 and inverter 32 each have an input end and an output end.
- the microcomputer 30 is further connected to the input terminals of the drive circuit 31 and the inverter 32, and the first terminal G1.
- the output end of the drive circuit 31 is connected to the other end of the power supply resistor 24 .
- the output end of inverter 32 is connected to the other end of discharge resistor 26 .
- the anode of the connection diode 34 is connected to the connection node between the microcomputer 30 and the first terminal G1.
- the cathode of connection diode 34 is connected to the drain of connection switch 22 .
- the source of the connection switch 22 is connected to the second terminal G2.
- a cathode of a discharge diode 33 is connected to a connection node between the power supply switch 20 and the load terminal Gf.
- a connection node between the power supply switch 20 and the load terminal Gf is a connection node between the power supply switch 20 and the inductive load 12 . Therefore, the discharge diode 33 functions as a second diode.
- the anode of the discharge diode 33 is connected to the source of the discharge switch 21.
- a drain of the discharge switch 21 is connected to the second terminal G2.
- the switching circuit 35 is connected to the other end of the connection resistor 28, the first terminal G1 and the second terminal G2.
- the gate voltage with the source potential as the reference potential is referred to as the gate voltage.
- Each of the power supply switch 20, the discharge switch 21, and the connection switch 22 switches from off to on when the gate voltage rises to a value equal to or higher than a certain voltage.
- the gate of connection switch 22 functions as a control terminal.
- the constant voltage of the connection switch 22 corresponds to the predetermined voltage.
- Each of the power supply switch 20, the discharge switch 21 and the connection switch 22 is switched off when the gate voltage drops below a certain voltage.
- the discharge switch 21 and the connection switch 22 is off, the resistance between the drain and the source is sufficiently large. Therefore, no current flows through the drain and source.
- the drive circuit 31 raises the voltage of the gate of the power supply switch 20 with the potential of the second terminal G2 as the reference potential. As a result, the gate voltage of the power supply switch 20 rises to a value equal to or higher than the constant voltage, and the power supply switch 20 is turned on. The drive circuit 31 reduces the voltage of the gate of the power supply switch 20 with the potential of the second terminal G2 as the reference potential. As a result, the gate voltage of the power supply switch 20 drops to a value less than the constant voltage, and the power supply switch 20 is switched off. As described above, the drive circuit 31 switches the power supply switch 20 on or off.
- the inverter 32 outputs a low-level voltage and a high-level voltage using the potential of the second terminal G2 as a reference potential from the output terminal.
- the low level voltage output by the inverter 32 is 0V, for example.
- the high-level voltage output by the inverter 32 is, for example, the voltage across the DC power supply 10 .
- the inverter 32 switches the output voltage from the low level voltage to the high level voltage
- the gate voltage of the discharge switch 21 increases with the potential of the second terminal G2 as the reference potential.
- the gate voltage of the discharge switch 21 rises to a value equal to or higher than the constant voltage, and the discharge switch 21 is turned on.
- the inverter 32 switches the output voltage from the high level voltage to the low level voltage
- the voltage of the gate of the discharge switch 21 with the potential of the second terminal G2 as the reference potential decreases.
- the gate voltage of the discharge switch 21 drops to a value less than the constant voltage, and the discharge switch 21 is switched off.
- the inverter 32 switches the discharge switch 21 on or off by switching the output voltage to the low level voltage or the high level voltage.
- the voltage of the positive electrode of DC power supply 10 is described as power supply voltage.
- the regulator 29 steps down the power supply voltage using the potential of the first terminal G1 as a reference potential to a constant target voltage, and applies the target voltage obtained by stepping down to the microcomputer 30 .
- the reference potential of the target voltage is the potential of the first terminal G1. Power is supplied to the microcomputer 30 by applying the target voltage.
- the microcomputer 30 outputs a high level voltage or a low level voltage to the input terminals of the drive circuit 31 and inverter 32 .
- the reference potential of the high-level voltage and the low-level voltage output by the microcomputer 30 is the potential of the first terminal G1.
- a high-level voltage is, for example, a target voltage output from the regulator 29 .
- the low level voltage is 0V, for example.
- the drive circuit 31 switches the power supply switch 20 from on to off, and the inverter 32 switches the output voltage from the low level voltage to the high level voltage. switch. As a result, the discharge switch 21 is switched from off to on.
- the microcomputer 30 instructs the drive circuit 31 to turn on the power supply switch 20, and instructs the inverter 32 to turn off the discharge switch 21. instruct. Furthermore, by switching the output voltage to a low level voltage, the microcomputer 30 instructs the drive circuit 31 to turn off the power supply switch 20 and instructs the inverter 32 to turn on the discharge switch 21 .
- the microcomputer 30 executes power supply control processing for controlling power supply to the inductive load 12 .
- the microcomputer 30 functions as a processor.
- the microcomputer 30 controls power supply from the DC power supply 10 to the inductive load 12 by instructing the power supply switch 20 to be turned on or off.
- FIG. 3 is a timing chart for explaining the power supply control process.
- FIG. 3 shows changes in the output voltage of the microcomputer 30 and changes in the states of the power supply switch 20 and the discharge switch 21 . Time is shown on the horizontal axis of each transition.
- the high level voltage and low level voltage are indicated by H and L, respectively.
- the drive circuit 31 switches the power supply switch 20 from off to on, and the inverter 32 switches the discharge switch 21 from on to off.
- current flows from the positive electrode of the DC power supply 10 to the power supply switch 20, the load terminal Gf, the inductive load 12, the ground conductor 13, and the negative electrode of the DC power supply 10 in this order.
- power is supplied to the inductive load 12 and the inductive load 12 operates. While the inductive load 12 is powered, current continues to flow through the inductor 12a and energy is stored in the inductor 12a.
- the anode of the discharge diode 33 is connected to the anode of the parasitic diode 21 a of the discharge switch 21 . Therefore, no current flows through the discharge diode 33 when the discharge switch 21 is off.
- the drive circuit 31 switches the power supply switch 20 from on to off, and the inverter 32 switches the discharge switch 21 from off to on.
- the power supply switch 20 is switched off, current flow through the inductive load 12 ceases. As a result, power supply to the inductive load 12 is stopped, and the inductive load 12 stops operating.
- the discharge switch 21 When the power supply switch 20 is switched off, the discharge switch 21 is switched on.
- the discharge switch 21 When the discharge switch 21 is on, the current flows from one end of the inductive load 12 on the ground conductor 13 side to the ground conductor 13, the second terminal G2, the discharge switch 21, the discharge diode 33, the load terminal Gf and the inductive load 12. flows in order of the other end. This releases the energy of the inductor 12a. As a result, a large drop in the voltage of the load terminal Gf with the potential of the ground conductor 13 as the reference potential is prevented.
- FIG. 4 is a circuit diagram of the switching circuit 35.
- the switching circuit 35 has a first circuit switch 41 , a second circuit switch 42 , first circuit resistors 43 and 44 and second circuit resistors 45 and 46 .
- the first circuit switch 41 is a PNP bipolar transistor.
- the second circuit switch 42 is an NPN bipolar transistor.
- a constant circuit voltage Vc is applied to the emitter of the first circuit switch 41 .
- a first example of the circuit voltage Vc is the voltage across the DC power supply 10 .
- a second example of the circuit voltage Vc is the target voltage output by the regulator 29 .
- the collector of the first circuit switch 41 is connected to the other end of the connection resistor 28. Accordingly, the collector of the first circuit switch 41 is connected to the gate of the connection switch 22 via the connection resistor 28.
- FIG. A first circuit resistor 43 is connected between the emitter and base of the first circuit switch 41 .
- a first circuit resistor 44 is connected between the base of the first circuit switch 41 and the collector of the second circuit switch 42 .
- the emitter of the second circuit switch 42 is connected to the second terminal G2. Therefore, the second circuit switch 42 is connected between the base of the first circuit switch 41 and the second terminal G2.
- a second circuit resistor 45 is connected between the base and emitter of the second circuit switch 42 .
- the base of the second circuit switch 42 is also connected to one end of a second circuit resistor 46 .
- the other end of the second circuit resistor 46 is connected to the first terminal G1.
- the base voltage with the emitter potential as the reference potential is referred to as the base voltage.
- the first circuit switch 41 if the base voltage is less than or equal to the constant first voltage, the first circuit switch 41 is on.
- the first voltage has a negative value and corresponds to a second predetermined voltage.
- the resistance between the emitter and collector is sufficiently small. Thus, current can flow through the emitter and collector in that order.
- the emitter of the first circuit switch 41 functions as an input terminal to which current is input.
- a collector of the first circuit switch 41 functions as an output terminal to which current is output.
- the base of the first circuit switch 41 functions as the second control end.
- the first circuit switch 41 when the base voltage exceeds the first voltage, the first circuit switch 41 is off. When the first circuit switch 41 is off, the resistance between the emitter and collector is sufficiently large. Therefore, no current flows through the emitter and collector.
- the second circuit switch 42 is on when the base voltage is greater than or equal to the constant second voltage.
- the second voltage is positive.
- the resistance between the collector and emitter is sufficiently small. Thus, current can flow through the collector and then the emitter.
- the collector of the second circuit switch 42 functions as an input terminal to which current is input.
- the emitter of the second circuit switch 42 functions as an output terminal to which current is output.
- the second circuit switch 42 when the base voltage is less than the second voltage, the second circuit switch 42 is off. When the second circuit switch 42 is off, the resistance between the emitter and collector is sufficiently high. Therefore, no current flows through the emitter and collector.
- the voltage of the first terminal G1 with the potential of the second terminal G2 as the reference potential is hereinafter referred to as the terminal voltage.
- the terminal voltage is 0V.
- the terminal voltage is 0V, no current flows through the second circuit resistors 45,46.
- the base voltage of the second circuit switch 42 is 0V, less than the positive second voltage. Therefore, the second circuit switch 42 is off.
- connection switch 22 When the second circuit switch 42 is off, no current flows through the first circuit resistors 43,44. Therefore, the base voltage of the first circuit switch 41 is 0V, exceeding the negative first voltage. Therefore, the first circuit switch 41 is off. When the first circuit switch 41 is off, no current flows through the connecting resistors 27,28. Therefore, the gate voltage of the connection switch 22 is 0V, which is less than the positive constant voltage. Therefore, the connection switch 22 is off.
- the connection switch 22 is off.
- the terminal voltage may increase.
- the terminal voltage exceeds 0 V
- current flows through the second circuit resistors 46 and 45 and the second terminal G2 in that order, and a voltage drop occurs across the second circuit resistor 45 . This causes the base voltage of the second circuit switch 42 to rise.
- the base voltage of the second circuit switch 42 is the second voltage.
- the base voltage of the second circuit switch 42 rises to a value equal to or higher than the second voltage.
- the second circuit switch 42 is switched on.
- current flows through the first circuit resistors 43 and 44, the second circuit switch 42, the second terminal G2 and the ground conductor 13 in that order. This causes a voltage drop across the first circuit resistor 43 . Due to this voltage drop, the base voltage of the first circuit switch 41 drops below the first voltage. Therefore, when the second circuit switch 42 is switched from off to on, the first circuit switch 41 is also switched from off to on.
- connection switch 41 When the first circuit switch 41 is on, current flows through the first circuit switch 41, the connection resistors 28 and 27, the second terminal G2, and the ground conductor 13 in this order. This causes a voltage drop across the connection resistor 27 . Due to this voltage drop, the gate voltage of the connection switch 22 rises above a certain voltage. Therefore, when the first circuit switch 41 is switched from off to on, the connection switch 22 is also switched from off to on.
- the connection switch 22 is on.
- FIG. 5 is a timing chart for explaining the operation of the switching circuit 35.
- FIG. FIG. 5 shows changes in power supply voltage and terminal voltage.
- the reference potential of the power supply voltage shown in FIG. 5 is the potential of the first terminal G1.
- the terminal voltage is the voltage of the first terminal G1 with the potential of the second terminal G2 as the reference potential.
- FIG. 5 also shows transitions of the states of the second circuit switch 42, the first circuit switch 41, and the connection switch 22.
- Time is shown on the horizontal axis for the five transitions shown in FIG. A high level voltage and a low level voltage are indicated by H and L, respectively.
- the regulator 29 steps down the power supply voltage with the potential of the first terminal G1 as the reference potential to the target voltage.
- Vs indicates a target voltage.
- Vth indicates a voltage threshold.
- Vd is the voltage across the connecting diode 34 when current is flowing through the anode and cathode of the connecting diode 34 in that order.
- Vd is the so-called forward voltage of the connecting diode 34 .
- the operation of the switching circuit 35 when no disturbance noise is generated will be described below.
- the terminal voltage is 0V. Therefore, the power supply voltage with the potential of the first terminal G1 as the reference potential is the voltage across the DC power supply 10 and is higher than the target voltage Vs.
- the second circuit switch 42 is off, as described above.
- the first circuit switch 41 and the connection switch 22 are also off.
- connection switch 22 When the connection switch 22 is on, current flows from the positive electrode of the DC power supply 10 to the power supply terminal Gb, the regulator 29, the connection diode 34, the connection switch 22, the second terminal G2, and the negative electrode of the DC power supply 10 in that order. Thereby, power is supplied to the regulator 29 .
- the regulator 29 steps down the power supply voltage with the potential of the first terminal G1 as a reference potential to a target voltage Vs, and applies the target voltage Vs with the potential of the first terminal G1 as a reference potential to the microcomputer 30 .
- the current flows from the positive electrode of the DC power supply 10 to the power supply terminal Gb, the regulator 29, the microcomputer 30, the connection diode 34, the connection switch 22, the second terminal G2, and the negative electrode of the DC power supply 10 in this order. Power is supplied to the microcomputer 30 .
- the second circuit switch 42 is switched from off to on before the power supply voltage with the potential of the first terminal G1 as the reference potential drops to a value less than the target voltage Vs. Therefore, the switching circuit 35 switches the connection switch 22 from off to on in a state where the power supply voltage with the potential of the first terminal G1 as a reference potential is equal to or higher than the target voltage Vs. Therefore, the regulator 29 continues to apply the target voltage Vs to the microcomputer 30 even when the terminal voltage rises due to disconnection between the first terminal G1 and the ground conductor 13 .
- connection switch 22 When the connection switch 22 is on, the terminal voltage drops to the forward voltage Vd of the connection diode 34 .
- the power supply voltage with the potential of the first terminal G1 as the reference potential rises.
- the forward voltage Vd is less than the voltage threshold Vth. Therefore, when the terminal voltage drops to the forward voltage Vd, the second circuit switch 42 switches from on to off. As a result, the first circuit switch 41 and the connection switch 22 are sequentially switched from on to off.
- the connection switch 22 When the terminal voltage drops to the forward voltage Vd, the connection switch 22 is switched off with the connection between the first terminal G1 and the ground conductor 13 disconnected. Therefore, the terminal voltage rises again.
- the terminal voltage rises to a value equal to or higher than the voltage threshold Vth the terminal voltage drops to the forward voltage Vd again. Therefore, when the connection between the first terminal G1 and the ground conductor 13 is broken, the terminal voltage fluctuates between the forward voltage Vd and the voltage threshold Vth. As a result, the target voltage Vs continues to be applied to the microcomputer 30 .
- the second circuit switch 42 when the terminal voltage rises to a value equal to or higher than the voltage threshold Vth, the second circuit switch 42 is switched from off to on.
- the gate voltage of the first circuit switch 41 drops to a value less than or equal to the negative first voltage, causing the first circuit switch 41 to switch from off to on.
- the switching circuit 35 switches the connection switch 22 from off to on.
- the terminal voltage is maintained at the forward voltage Vd of the connection diode 34 after the second circuit switch 42 is switched from off to on. be done.
- the second circuit switch 42, the first circuit switch 41, and the connection switch 22 are fixed on, and the second circuit switch 42 is not alternately turned on and off.
- the terminal voltage is a large voltage among the voltage threshold Vth and the forward voltage Vd. is not exceeded and is suppressed.
- FIG. 6 is an explanatory diagram of the layout of the components of the control device 11.
- the control device 11 has a first substrate B1 and a second substrate B2.
- the second substrate B2 is different from the first substrate B1.
- a regulator 29 and a microcomputer 30 are arranged on the first board B1.
- a power supply switch 20, a discharge switch 21, a connection switch 22, a drive circuit 31, and a switching circuit 35 are arranged on the second substrate B2.
- the arrangement of the switching circuit 35 means the arrangement of the first circuit switch 41, the second circuit switch 42, the first circuit resistors 43 and 44, and the second circuit resistors 45 and 46 which the switching circuit 35 has.
- the first terminal G1 is arranged on the first substrate B1.
- Feed resistors 23, 24, discharge resistors 25, 26, connection resistors 27, 28, inverter 32, discharge diode 33, connection diode 34, second terminal G2, power supply terminal Gb, and load terminal Gf are arranged on second substrate B2. ing.
- the first substrate B1 and the second substrate B2 are connected by a connection line.
- the substrate on which the connection switch 22, the connection resistors 27 and 28, the connection diode 34, and the switching circuit 35 are arranged is not limited to the second substrate B2, and may be arranged on the first substrate B1.
- the number of boards on which the circuit components of the control device 11 are arranged is not limited to two, and may be one or three or more.
- the circuit components include the power supply switch 20, the discharge switch 21, the connection switch 22, the regulator 29, the microcomputer 30, the drive circuit 31, the inverter 32, the discharge diode 33, the connection diode 34, the switching circuit 35, and the like shown in FIG.
- the microcomputer 30 may monitor the power supply voltage using the potential of the first terminal G1 as a reference potential.
- the points of the second embodiment that are different from the first embodiment will be described. Configurations other than those described later are common to those of the first embodiment. For this reason, the same reference numerals as in Embodiment 1 are given to the components that are common to Embodiment 1, and the description of those components is omitted.
- FIG. 7 is a circuit diagram of the control device 11 according to the second embodiment.
- the control device 11 according to the second embodiment similarly has the components of the control device 11 according to the first embodiment.
- the control device 11 also has a voltage detection circuit 36 .
- the voltage detection circuit 36 has voltage dividing resistors 50 and 51 .
- One end of the voltage dividing resistor 50 is connected to the drain of the power supply switch 20 .
- the other end of the voltage dividing resistor 50 is connected to one end of the voltage dividing resistor 51 .
- the other end of the voltage dividing resistor 51 is connected to the first terminal G1.
- a connection node between the voltage dividing resistors 50 and 51 is connected to the microcomputer 30 .
- the voltage dividing resistors 50 and 51 divide the power supply voltage of the DC power supply 10 with the potential of the first terminal G1 as a reference potential.
- the divided voltage obtained by dividing the power supply voltage by the voltage dividing resistors 50 and 51 is the voltage across the voltage dividing resistor 51, and is proportional to the power supply voltage with the potential of the first terminal G1 as a reference potential.
- the divided voltage is power supply voltage information indicating the power supply voltage.
- the voltage detection circuit 36 detects the power supply voltage of the DC power supply 10 using the potential of the first terminal G1 as a reference potential, and notifies the microcomputer 30 of the detected power supply voltage.
- FIG. 8 is a circuit diagram of the switching circuit 35. As shown in FIG. The switching circuit 35 according to the second embodiment similarly has the components of the switching circuit 35 according to the first embodiment.
- the switching circuit 35 in Embodiment 2 further has an AND circuit 47 and a third circuit resistor 48 .
- the AND circuit 47 has two input terminals and one output terminal.
- a third circuit resistor 48 is connected between the collector of the first circuit switch 41 and the second terminal G2.
- One input terminal of the AND circuit 47 is connected to the microcomputer 30 .
- the other input terminal of the AND circuit 47 is connected to a connection node between the first circuit switch 41 and the third circuit resistor 48.
- one end of the connection resistor 28 is connected to the gate of the connection switch 22 .
- An output end of the AND circuit 47 is connected to the other end of the connection resistor 28 .
- the microcomputer 30 outputs a low level voltage to the input terminal of the AND circuit 47 when the power supply voltage detected by the voltage detection circuit 36 is equal to or higher than the set voltage.
- the set voltage is a constant value and is set in advance.
- the reference potential of the low level voltage input from the microcomputer 30 to the AND circuit 47 is the potential of the first terminal G1.
- the low level voltage is 0V, for example.
- the microcomputer 30 outputs a high level voltage to the input terminal of the AND circuit 47 when the power supply voltage detected by the voltage detection circuit 36 is less than the set voltage.
- the reference potential of the high level voltage input from the microcomputer 30 to the AND circuit 47 is also the potential of the first terminal G1.
- the high-level voltage is, for example, the target voltage output by the regulator 29 .
- a voltage across the third circuit resistor 48 is input to the AND circuit 47 .
- the voltage across the third circuit resistor 48 is referred to as resistance voltage.
- a second voltage threshold is set in the AND circuit 47 . The second voltage threshold is greater than 0V and less than or equal to the circuit voltage Vc.
- the AND circuit 47 outputs a low level voltage from the output terminal when the input voltage input from the microcomputer 30 to the AND circuit 47 is a low level voltage or when the resistance voltage is less than the second voltage threshold. .
- the reference potential of the low level voltage output from the AND circuit 47 is the potential of the second terminal G2.
- the low level voltage is 0V, for example.
- the AND circuit 47 outputs a high level voltage from the output terminal when the input voltage input from the microcomputer 30 to the AND circuit 47 is a high level voltage and the resistance voltage is equal to or higher than the second voltage threshold.
- the reference potential of the high level voltage output from the AND circuit 47 is the potential of the second terminal G2.
- a first example of the high level voltage is the voltage across the DC power supply 10 .
- a second example of the high level voltage is the target voltage output by the regulator 29 .
- connection switch 22 When the AND circuit 47 outputs a high level voltage, current flows through the connection resistors 28 and 27, the second terminal G2 and the ground conductor 13 in this order. This causes a voltage drop across the connection resistor 27 . Due to this voltage drop, the gate voltage of the connection switch 22 rises above a certain voltage. Therefore, when the AND circuit 47 outputs a high level voltage, the connection switch 22 is on.
- FIG. 9 is a timing chart for explaining the operation of the switching circuit 35.
- FIG. FIG. 9 shows transitions of the power supply voltage, the terminal voltage, and the input voltage of the AND circuit 47 .
- the reference potential of the power supply voltage shown in FIG. 9 is the potential of the first terminal G1.
- the terminal voltage is the voltage of the first terminal G1 with the potential of the second terminal G2 as the reference potential.
- FIG. 9 also shows transitions of the states of the first circuit switch 41, the second circuit switch 42, and the connection switch 22.
- Time is shown on the horizontal axis for the five transitions shown in FIG. A high level voltage and a low level voltage are indicated by H and L, respectively.
- Vs, Vth and Vd are the target voltage, voltage threshold and forward voltage of the connecting diode 34, respectively.
- Vr is a set voltage.
- the operation of the switching circuit 35 when no disturbance noise is generated and the voltage threshold exceeds the forward voltage Vd of the connection diode 34 will be described below.
- the terminal voltage is 0V. Therefore, the power supply voltage with the potential of the first terminal G1 as the reference potential is the voltage across the DC power supply 10 and is higher than the set voltage Vr.
- the target voltage Vs is higher than the set voltage Vr. Therefore, the input voltage input from the microcomputer 30 to the AND circuit 47 is a low level voltage.
- the first circuit switch 41, the second circuit switch 42 and the connection switch 22 are off, as described in the first embodiment. Therefore, since no current flows through the third circuit resistor 48, the resistor voltage is 0V, which is less than the second voltage threshold. Therefore, the output voltage of the AND circuit 47 is a low level voltage and the connection switch 22 is off.
- the second circuit switch 42 When the input voltage of the AND circuit 47 is a high level voltage and the terminal voltage rises to a value equal to or higher than the voltage threshold Vth, the second circuit switch 42 is switched from off to on. As a result, the first circuit switch 41 is switched from off to on.
- the first circuit switch 41 When the first circuit switch 41 is on, current flows through the first circuit switch 41, the third circuit resistor 48, the second terminal G2 and the ground conductor 13 in that order. As a result, the resistance voltage rises from 0V to the circuit voltage Vc. Since the circuit voltage Vc is equal to or higher than the second voltage threshold, the AND circuit 47 switches the output voltage from the low level voltage to the high level voltage. As a result, the connection switch 22 is switched from off to on.
- the connection switch 22 when the connection switch 22 is on, the terminal voltage drops to the forward voltage Vd of the connection diode 34 .
- the second circuit switch 42 switches from on to off.
- the first circuit switch 41 is switched from ON to OFF, and the resistance voltage drops from the circuit voltage Vc to 0V.
- the AND circuit 47 switches the output voltage from the high level voltage to the low level voltage, and the connection switch 22 switches from on to off.
- the power supply voltage with the potential of the first terminal G1 as the reference potential rises.
- the power supply voltage using the potential of the first terminal G1 as a reference potential does not rise to a value equal to or higher than the set voltage Vr.
- the terminal voltage rises again.
- the terminal voltage rises to a value equal to or higher than the voltage threshold Vth in a state where the power supply voltage with the potential of the first terminal G1 as a reference potential is less than the set voltage Vr
- the terminal voltage drops to the forward voltage Vd again. Therefore, when the connection between the first terminal G1 and the ground conductor 13 is broken, the terminal voltage fluctuates between the forward voltage Vd and the voltage threshold Vth. As a result, the target voltage Vs continues to be applied to the microcomputer 30 .
- the terminal voltage rises to a value equal to or higher than the voltage threshold due to disturbance noise, and the power supply voltage with the potential of the first terminal G1 as the reference potential. drops to a value less than the set voltage Vr, the connection switch 22 switches from off to on. As a result, the terminal voltage drops to the forward voltage Vd. Therefore, even if disturbance noise enters the first terminal G1, the terminal voltage does not exceed the voltage threshold Vth.
- the switching circuit 35 switches the connection switch from OFF to ON when the terminal voltage rises to a value equal to or higher than the voltage threshold Vth while the power supply voltage detected by the voltage detection circuit 36 is lower than the set voltage Vr. . Therefore, the connection switch 22 is switched from off to on when there is a high possibility that the terminal voltage has increased.
- the set voltage Vr corresponds to a third predetermined voltage.
- the set voltage Vr only needs to exceed the power supply voltage when the terminal voltage is the voltage threshold Vth. Therefore, the set voltage Vr may be equal to or lower than the power supply voltage when the terminal voltage is the forward voltage Vd of the connection diode 34 . Also in this configuration, each of the second circuit switch 42, the first circuit switch 41, and the connection switch 22 alternately repeats ON and OFF.
- the power supply voltage when the terminal voltage is the forward voltage Vd of the connection diode 34 is equal to or higher than the set voltage Vr, and the forward voltage Vd of the connection diode 34 is equal to or higher than the voltage threshold Vth.
- the terminal voltage is maintained at the forward voltage Vd of the connecting diode 34 after the second circuit switch 42 is switched from off to on.
- the second circuit switch 42, the first circuit switch 41, and the connection switch 22 are fixed on, and the second circuit switch 42 is not alternately turned on and off.
- the control device 11 according to the second embodiment has the same effect as that of the control device 11 according to the first embodiment except for the effect obtained by connecting the collector of the first circuit switch 41 to the connection resistor 28. play to
- the first circuit switch 41 is not limited to a PNP bipolar transistor, and may be a P-channel FET, for example.
- the second circuit switch 42 is not limited to an NPN-type bipolar transistor, and may be an N-channel FET or an IGBT (Insulated Gate Bipolar Transistor).
- the switching circuit 35 may be configured to switch the connection switch 22 from off to on when the terminal voltage rises to a value equal to or higher than the voltage threshold. Therefore, the configuration of the switching circuit 35 is not limited to the configuration using the first circuit switch 41 and the second circuit switch 42 .
- the power supply switch 20 and the connection switch 22 are not limited to N-channel FETs, and may be P-channel FETs, bipolar transistors, or the like.
- the connection switch 22 is a P-channel FET, the configuration of the switching circuit 35 is different from the configuration using the first circuit switch 41 and the second circuit switch 42 .
- the discharge switch 21 is not limited to an N-channel FET, and may be, for example, an NPN bipolar transistor.
- the load to which the DC power supply 10 supplies power is not limited to the inductive load 12, and may be a load that does not include the inductor 12a.
- the discharge switch 21, the discharge resistors 25 and 26, the inverter 32 and the discharge diode 33 need not be arranged in the control device 11.
- the control device 11 is not limited to a device that controls power supply.
- the control device 11 may be any device that performs control.
- the microcomputer 30 executes a control process different from the power supply control process. This process is, for example, a process of transmitting a control signal for controlling the vehicle M.
- the controller 11 includes the power supply switch 20, the discharge switch 21, the power supply resistors 23 and 24, the discharge resistors 25 and 26, the drive circuit 31, and the Inverter 32 is not arranged.
- Reference Signs List 1 power supply system 10 DC power supply 11 control device 12 inductive load 12a inductor 13 ground conductor 20 power supply switches 20a, 21a, 22a parasitic diode 21 discharge switch 22 connection switch 23, 24 power supply resistors 25, 26 discharge resistors 27, 28 connection resistor 29 Regulator 30
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Electronic Switches (AREA)
- Direct Current Feeding And Distribution (AREA)
- Protection Of Static Devices (AREA)
Abstract
Description
本出願は、2021年11月4日出願の日本出願第2021-180489号に基づく優先権を主張し、前記日本出願に記載された全ての記載内容を援用するものである。
特許文献1では、グランド端子及びグランドの接続が外れた場合、グランドの電位を基準電位としたグランド端子の電圧が上昇する。グランドの電位を基準電位としたグランド端子の電圧が上昇した場合、ICに印加される電圧が低下する。電圧の低下幅が大きい場合、ICが適切な動作を行わない可能性がある。
本開示によれば、処理を実行する処理器を介して流れる電流経路において、処理器の下流側に配置されている端子の電圧の上昇を抑制する。
最初に本開示の実施態様を列挙して説明する。以下に記載する実施形態の少なくとも一部を任意に組み合わせてもよい。
本開示の実施形態に係る電源システムの具体例を、以下に図面を参照しつつ説明する。なお、本発明はこれらの例示に限定されるものではなく、請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。
<電源システムの構成>
図1は、実施形態1における電源システム1の要部構成を示すブロック図である。電源システム1は車両Mに搭載されている。電源システム1は、直流電源10、制御装置11、誘導性負荷12及びグランド導体13を備える。直流電源10は、例えばバッテリである。誘導性負荷12は、インダクタ12aを有し、例えばモータである。グランド導体13は、例えば車両Mのボディである。グランド導体13への接続により、接地が実現される。
図2は制御装置11の回路図である。制御装置11は、給電スイッチ20に加えて、放電スイッチ21、接続スイッチ22、給電抵抗23,24、放電抵抗25,26、接続抵抗27,28、レギュレータ29、マイクロコンピュータ(以下、マイコンという)30、駆動回路31、反転器32、放電ダイオード33、接続ダイオード34、切替え回路35、第1端子G1、第2端子G2、電源端子Gb及び負荷端子Gfを有する。第1端子G1及び第2端子G2はグランド導体13に接続されている。電源端子Gbは直流電源10の正極に接続されている。負荷端子Gfに誘導性負荷12の一端に接続されている。前述したように、誘導性負荷12の他端はグランド導体13に接続されている。
図4は、切替え回路35の回路図である。切替え回路35は、第1回路スイッチ41、第2回路スイッチ42、第1回路抵抗43,44及び第2回路抵抗45,46を有する。第1回路スイッチ41は、PNP型のバイポーラトランジスタである。第2回路スイッチ42は、NPN型のバイポーラトランジスタである。第1回路スイッチ41のエミッタには、一定の回路電圧Vcが印加されている。回路電圧Vcの第1例は、直流電源10の両端間の電圧である。回路電圧Vcの第2例は、レギュレータ29が出力する目標電圧である。
図6は、制御装置11の構成部の配置の説明図である。制御装置11は、第1基板B1及び第2基板B2を有する。第2基板B2は第1基板B1とは異なる。第1基板B1には、レギュレータ29及びマイコン30が配置されている。第2基板B2には、給電スイッチ20、放電スイッチ21、接続スイッチ22、駆動回路31及び切替え回路35が配置されている。切替え回路35の配置は、切替え回路35が有する第1回路スイッチ41、第2回路スイッチ42、第1回路抵抗43,44及び第2回路抵抗45,46の配置を意味する。
実施形態1において、マイコン30は、第1端子G1の電位を基準電位とした電源電圧を監視してもよい。
以下では、実施形態2について、実施形態1と異なる点を説明する。後述する構成を除く他の構成については、実施形態1と共通している。このため、実施形態1と共通する構成部には実施形態1と同一の参照符号を付し、その構成部の説明を省略する。
図7は、実施形態2における制御装置11の回路図である。実施形態2における制御装置11は、実施形態1における制御装置11が有する構成部を同様に有する。制御装置11は、更に、電圧検出回路36を有する。電圧検出回路36は、分圧抵抗50,51を有する。分圧抵抗50の一端は、給電スイッチ20のドレインに接続されている。分圧抵抗50の他端は、分圧抵抗51の一端に接続されている。分圧抵抗51の他端は第1端子G1に接続されている。分圧抵抗50,51間の接続ノードはマイコン30に接続されている。
図8は切替え回路35の回路図である。実施形態2における切替え回路35は、実施形態1における切替え回路35が有する構成部を同様に有する。実施形態2における切替え回路35は、更に、AND回路47及び第3回路抵抗48を有する。AND回路47は、2つの入力端と、1つの出力端とを有する。第3回路抵抗48は、第1回路スイッチ41のコレクタと、第2端子G2との間に接続されている。
実施形態1,2における切替え回路35について、第1回路スイッチ41は、PNP型のバイポーラトランジスタに限定されず、例えば、Pチャネル型のFETであってもよい。第2回路スイッチ42は、NPN型のバイポーラトランジスタに限定されず、Nチャネル型のFET又はIGBT(Insulated Gate Bipolar Transistor)であってもよい。切替え回路35は、端子電圧が電圧閾値以上の値に上昇した場合に接続スイッチ22をオフからオンに切替える構成であればよい。このため、切替え回路35の構成は、第1回路スイッチ41及び第2回路スイッチ42を用いた構成に限定されない。
10 直流電源
11 制御装置
12 誘導性負荷
12a インダクタ
13 グランド導体
20 給電スイッチ
20a,21a,22a 寄生ダイオード
21 放電スイッチ
22 接続スイッチ
23,24 給電抵抗
25,26 放電抵抗
27,28 接続抵抗
29 レギュレータ
30 マイコン(処理器)
31 駆動回路
32 反転器
33 放電ダイオード(第2のダイオード)
34 接続ダイオード
35 切替え回路
36 電圧検出回路
41 第1回路スイッチ
42 第2回路スイッチ
43,44 第1回路抵抗
45,46 第2回路抵抗
47 AND回路
48 第3回路抵抗
50,51 分圧抵抗
B1 第1基板
B2 第2基板
G1 第1端子
G2 第2端子
Gb 電源端子
Gf 負荷端子
M 車両
Claims (9)
- 車両用の制御装置であって、
処理を実行する処理器と、
前記処理器を介して流れる電流の電流経路にて前記処理器の下流側に配置される第1端子と、
前記処理器及び第1端子間の接続ノードにアノードが接続されるダイオードと、
前記ダイオードのカソードに一端が接続される接続スイッチと、
前記接続スイッチの他端に接続される第2端子と、
前記第2端子の電位を基準電位とした前記第1端子の電圧が閾値以上の値に上昇した場合に前記接続スイッチをオフからオンに切替える切替え回路と
を備える制御装置。 - 直流電源から負荷への給電経路に配置される給電スイッチを備え、
前記処理器は、前記給電スイッチのオン又はオフへの切替えを指示する
請求項1に記載の制御装置。 - 前記処理器が配置される第1基板と、
前記第1基板とは異なり、前記給電スイッチが配置される第2基板と
を備える請求項2に記載の制御装置。 - 前記給電スイッチ及び負荷間の接続ノードにカソードが接続されている第2のダイオードと、
前記第2のダイオードのアノード、及び、前記第2端子間に接続されている第2の接続スイッチと
を備え、
前記負荷はインダクタを有する
請求項2又は請求項3に記載の制御装置。 - 前記処理器は、
前記給電スイッチのオンへの切替えを指示する場合に前記第2の接続スイッチのオンへの切替えを指示し、
前記給電スイッチのオフへの切替えを指示する場合に前記第2の接続スイッチのオフへの切替えを指示する
請求項4に記載の制御装置。 - 前記第1端子の電位を基準電位とした直流電源の電源電圧を目標電圧に降圧し、前記目標電圧を前記処理器に印加するレギュレータを備え、
前記切替え回路は、前記電源電圧が前記目標電圧以上である状態で前記接続スイッチをオフからオンに切替える
請求項1から請求項5のいずれか1項に記載の制御装置。 - 前記第2端子に一端が接続される抵抗を備え、
前記接続スイッチは、制御端を有し、
前記抵抗の他端は前記接続スイッチの前記制御端に接続され、
前記接続スイッチは、前記第2端子の電位を基準電位とした前記制御端の電圧が所定電圧以上の値に上昇した場合にオフからオンに切替わり、
前記切替え回路は、電流が入力される入力端、及び、電流が出力される出力端を有する回路スイッチを有し、
前記回路スイッチの前記出力端は、前記接続スイッチの前記制御端に接続され、
前記回路スイッチの前記入力端には、回路電圧が印加されており、
前記回路スイッチは、前記第2端子の電位を基準電位とした前記第1端子の電圧が前記閾値以上の値に上昇した場合にオフからオンに切替わる
請求項1から請求項6のいずれか1項に記載の制御装置。 - 前記回路スイッチは、第2の制御端を有し、
前記回路スイッチは、前記入力端の電位を基準電位とした前記第2の制御端の電圧が第2の所定電圧以下である場合にオンであり、
前記切替え回路は、
前記回路スイッチの前記入力端及び第2の制御端間に接続される回路抵抗と、
前記回路スイッチの前記第2の制御端、及び、前記第2端子間に接続される第2の回路スイッチと
を有し、
前記第2の回路スイッチは、前記第2端子の電位を基準電位とした前記第1端子の電圧が前記閾値以上の値に上昇した場合にオフからオンに切替わる
請求項7に記載の制御装置。 - 前記第1端子の電位を基準電位とした直流電源の電源電圧を検出する電圧検出回路を備え、
前記切替え回路は、前記電圧検出回路が検出した電源電圧が第3の所定電圧未満である状態で、前記第2端子の電位を基準電位とした前記第1端子の電圧が前記閾値以上の値に上昇した場合に前記接続スイッチをオフからオンに切替える
請求項1から請求項8のいずれか1項に記載の制御装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280069623.7A CN118202574A (zh) | 2021-11-04 | 2022-10-21 | 控制装置 |
US18/706,214 US20250015797A1 (en) | 2021-11-04 | 2022-10-21 | Control device |
DE112022005303.8T DE112022005303T5 (de) | 2021-11-04 | 2022-10-21 | Steuereinrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021180489A JP7697348B2 (ja) | 2021-11-04 | 2021-11-04 | 制御装置 |
JP2021-180489 | 2021-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023079975A1 true WO2023079975A1 (ja) | 2023-05-11 |
Family
ID=86240939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/039204 WO2023079975A1 (ja) | 2021-11-04 | 2022-10-21 | 制御装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20250015797A1 (ja) |
JP (1) | JP7697348B2 (ja) |
CN (1) | CN118202574A (ja) |
DE (1) | DE112022005303T5 (ja) |
WO (1) | WO2023079975A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US12355597B2 (en) * | 2021-03-30 | 2025-07-08 | Autonetworks Technologies, Ltd. | Communicator and communication device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110057592A1 (en) * | 2009-09-04 | 2011-03-10 | Thierry Sicard | Power transistor circuit |
JP2012235683A (ja) * | 2011-04-28 | 2012-11-29 | Freescale Semiconductor Inc | 負荷制御および保護システム、並びにその動作および使用方法 |
JP2013072681A (ja) * | 2011-09-27 | 2013-04-22 | Shindengen Electric Mfg Co Ltd | 電子制御装置 |
JP2020123781A (ja) * | 2019-01-29 | 2020-08-13 | 株式会社東芝 | 半導体装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2885967B2 (ja) * | 1991-06-27 | 1999-04-26 | 三菱電機エンジニアリング株式会社 | 電気回路装置 |
AUPQ775100A0 (en) * | 2000-05-26 | 2000-06-15 | Cleansun Pty Ltd | Power conversion system |
JP4779661B2 (ja) * | 2006-01-17 | 2011-09-28 | トヨタ自動車株式会社 | 通信装置 |
MX349045B (es) * | 2012-08-21 | 2017-07-06 | N2 Global Solutions Incorporated | Sistema y aparato para proporcionar y administrar electricidad. |
JP2014103507A (ja) * | 2012-11-19 | 2014-06-05 | Auto Network Gijutsu Kenkyusho:Kk | 電力供給制御装置 |
KR101961116B1 (ko) * | 2012-11-19 | 2019-03-25 | 삼성디스플레이 주식회사 | 전원제어장치 및 이를 포함하는 표시장치 |
JP2017112816A (ja) * | 2015-12-16 | 2017-06-22 | みんな電力株式会社 | 自己昇圧機能を有するインバータ回路 |
JP7006209B2 (ja) * | 2017-12-06 | 2022-01-24 | 住友電装株式会社 | 負荷駆動回路 |
US11050240B2 (en) * | 2018-04-03 | 2021-06-29 | Texas Instruments Incorporated | Electric motor ground protection |
EP3913742B1 (en) | 2020-05-14 | 2022-11-23 | Ask Industries Societa' per Azioni | Antenna module for a vehicle with radiant elements arrangement |
-
2021
- 2021-11-04 JP JP2021180489A patent/JP7697348B2/ja active Active
-
2022
- 2022-10-21 US US18/706,214 patent/US20250015797A1/en active Pending
- 2022-10-21 WO PCT/JP2022/039204 patent/WO2023079975A1/ja active Application Filing
- 2022-10-21 DE DE112022005303.8T patent/DE112022005303T5/de active Pending
- 2022-10-21 CN CN202280069623.7A patent/CN118202574A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110057592A1 (en) * | 2009-09-04 | 2011-03-10 | Thierry Sicard | Power transistor circuit |
JP2012235683A (ja) * | 2011-04-28 | 2012-11-29 | Freescale Semiconductor Inc | 負荷制御および保護システム、並びにその動作および使用方法 |
JP2013072681A (ja) * | 2011-09-27 | 2013-04-22 | Shindengen Electric Mfg Co Ltd | 電子制御装置 |
JP2020123781A (ja) * | 2019-01-29 | 2020-08-13 | 株式会社東芝 | 半導体装置 |
Also Published As
Publication number | Publication date |
---|---|
JP7697348B2 (ja) | 2025-06-24 |
CN118202574A (zh) | 2024-06-14 |
JP2023068978A (ja) | 2023-05-18 |
US20250015797A1 (en) | 2025-01-09 |
DE112022005303T5 (de) | 2024-09-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4113436B2 (ja) | ゲートドライブ装置 | |
CN108781078B (zh) | 供电控制装置 | |
US20080018174A1 (en) | Power control apparatus and method thereof | |
WO2017175578A1 (ja) | 給電制御装置 | |
CN107086864B (zh) | 驱动器电路、对应的装置和方法 | |
WO2023079975A1 (ja) | 制御装置 | |
JP2021521724A (ja) | Pチャンネルmosfetを制御するためのドライバー回路及びそれを含む制御装置 | |
JP5435483B2 (ja) | 電源供給装置 | |
US11881850B2 (en) | Driving apparatus | |
WO2020022037A1 (ja) | 回路装置 | |
WO2022149483A1 (ja) | スイッチ装置 | |
JP7413860B2 (ja) | 給電制御装置 | |
CN113785255B (zh) | 电压调节器以及车载用的备用电源 | |
JP6724539B2 (ja) | 負荷駆動装置 | |
CN116057836A (zh) | 检测电路及供电控制装置 | |
CN110521121B (zh) | 用于操控电子切换单元的装置 | |
US10135434B2 (en) | Electronic circuit for controlling a half H-bridge | |
WO2022244319A1 (ja) | ゲート駆動装置 | |
US7187157B1 (en) | Power supply remote voltage sensing | |
JP7294127B2 (ja) | 給電制御装置 |
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: 22889795 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280069623.7 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18706214 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112022005303 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22889795 Country of ref document: EP Kind code of ref document: A1 |