CN220122885U - Switch circuit for controlling turn-off of input/output IO on domain controller - Google Patents
Switch circuit for controlling turn-off of input/output IO on domain controller Download PDFInfo
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- CN220122885U CN220122885U CN202222962417.9U CN202222962417U CN220122885U CN 220122885 U CN220122885 U CN 220122885U CN 202222962417 U CN202222962417 U CN 202222962417U CN 220122885 U CN220122885 U CN 220122885U
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Abstract
The utility model discloses a switching circuit for controlling to turn off an input/output IO on a domain controller, which comprises a trigger module, a switching module and a self-locking module; the trigger module is respectively coupled with a first current source and the switch module and is used for transmitting a first signal generated by the first current source to the switch module; the switch module is coupled with a second current source and a load and is used for controlling whether the second current source supplies power to the load according to the first signal; the self-locking module is respectively coupled with the switch module and the load and is used for keeping the switch module electrified and self-locking when the load is electrified; the self-locking module is also used for controlling the switch module to release self-locking according to a second signal. The utility model realizes the control of the on-off of the power supply loop of the domain controller by the operation of the IO control switching tube in the on-state and the off-state, and realizes the high-efficiency stable power supply control of the domain controller.
Description
Technical Field
The utility model relates to the field of electronic switches, in particular to a switching circuit for controlling turn-off of input/output IO on a domain controller.
Background
The domain controller is a plurality of functional area blocks into which an electronic system inside a host vehicle is divided according to its functions. The systems in the regional blocks are connected by communication lines, and the different domains are communicated by Ethernet as a backbone. The electronic control units are integrated into a plurality of fields, and the functions of the electronic control units are concentrated into the domain controller through the chip, so that the centralized distribution management is realized.
The battery energy-saving relay is generally coupled between a power supply and a vehicle-mounted electric load, the opening and closing of the relay are controlled through the vehicle body domain controller according to a time threshold value, the opening power supply of the vehicle-mounted electric appliance is controlled, and the static current of the whole vehicle is reduced. If the scheme is adopted for a plurality of systems, a large number of relays and relay control circuits are added, the complexity of the systems is increased, the large-size expandability is poor, the power consumption of the relays is high during working, and the high-efficiency and stable power supply control of the domain controller is not facilitated.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a switching circuit for controlling the turn-off of Input Output (IO) on a domain controller, which is coupled between a power supply and a load in the domain, and controls the on-off of a power supply loop of the domain controller by controlling a switching element to work in an on state and an off state through the IO. Compared with the existing relay switch control circuit, the circuit disclosed by the utility model has lower power consumption, simpler and smaller circuit structure and elements, and can realize high-efficiency and stable power supply control of the domain controller.
The technical scheme provided by the utility model is as follows:
a switching circuit for IO control turn-off on a domain controller comprises a trigger module, a switching module and a self-locking module. The trigger module is respectively coupled with a first current source and the switch module and is used for transmitting a first signal generated by the first current source to the switch module; the switch module is coupled with a second current source and a load and is used for controlling whether the second current source supplies power to the load according to the first signal; the self-locking module is respectively coupled with the switch module and the load and is used for keeping the switch module electrified and self-locking when the load is electrified; the self-locking module is also used for controlling the switch module to release self-locking according to a second signal. The scheme has lower circuit power consumption, simple circuit structure and simple and stable IO control.
Optionally, the triggering module includes a first switching element, a first end of the first switching element is coupled to the first current source, a second end of the first switching element is coupled to the switching module, and a third end of the first switching element is coupled to a ground. The trigger module further comprises a first resistor, a second resistor, a third resistor and a first capacitor, wherein one end of the first resistor is respectively coupled with the first current source and one end of the second resistor, the other end of the second resistor is respectively coupled with one end of the third resistor, one end of the first capacitor and the first end of the first switch element, and the other end of the first resistor, the other end of the third resistor and the other end of the first capacitor are respectively coupled with a ground terminal.
Optionally, the switching module includes a second switching element, a first end of the second switching element is coupled to the triggering module and the self-locking module respectively, a second end of the second switching element is coupled to the second current source, and a third end of the second switching element is coupled to the load. The switch module further comprises a second capacitor, a fourth resistor and a third capacitor, wherein one end of the second capacitor is respectively coupled with the second current source, one end of the fourth resistor and the second end of the second switch element, the other end of the fourth resistor is coupled with the first end of the second switch element, one end of the third capacitor is respectively coupled with the third end of the second switch element and the load, and the other end of the second capacitor and the other end of the third capacitor are respectively coupled with the ground.
Optionally, the self-locking module includes a third switching element, and the third switching element is coupled to the second switching element and the load respectively. The first end of the third switching element is coupled with the load, the second end of the third switching element is coupled with the switching module, and the third end of the third switching element is coupled with the ground. The self-locking module further comprises a fifth resistor and a fourth capacitor, one end of the fifth resistor is respectively coupled with the first end of the third switching element and one end of the fourth capacitor, the other end of the fifth resistor is coupled with the load, and the other end of the fourth capacitor is coupled with the ground.
Preferably, the first switching element, the second switching element and the third switching element are any one of an insulated gate bipolar transistor (insulated gate bipolar transistor, IGBT), a metal-oxide-semiconductor (MOS), or a triode, and the electronic switching element has a small size, low power consumption, and high stability.
Preferably, the second signal is generated by at least one of an integrated circuit (integrated circuit, IC) chip, a micro control unit (microcontroller unit, MCU), a central processing unit (central processing unit, CPU) or a key switch, for blocking or pulling down an input of the first end of the third switching element, so that the third switching element is de-energized to release self-locking of the switching module. The first signal is a single pulse signal, and the single pulse signal is an instantaneous signal, so that the trigger module can be only kept on for a short time to play a role in triggering.
The beneficial effects of the utility model are as follows: the circuit disclosed by the utility model has low power consumption, simple and small circuit structure and elements, and can realize the power supply control of the domain controller with high efficiency and stability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of the present utility model;
FIG. 2 is a schematic circuit diagram of the present utility model;
FIG. 3 is a schematic circuit diagram of an embodiment of the present utility model;
FIG. 4 is a schematic circuit diagram of another embodiment of the present utility model;
fig. 5 is a schematic circuit diagram of still another embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described by means of implementation examples with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
The description of examples, specific examples, or "some examples" and the like means that a particular feature or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It is to be understood that "coupled" in this disclosure may be understood as either directly coupled, i.e., connected electrically, or indirectly coupled, i.e., connected through other devices, elements, modules, etc.
Please refer to the block diagram of the present utility model shown in fig. 1. As shown in fig. 1, the switching circuit of the domain controller, which is turned off by controlling input/output IO, may include a trigger module, a switching module, and a self-locking module. The trigger module is respectively coupled with a first current source and the switch module, and is used for transmitting a first signal generated by the first current source to the switch module, the switch module is coupled with a second current source and a load, and is used for controlling whether the second current source supplies power to the load according to the first signal, the self-locking module is respectively coupled with the switch module and the load, and is used for enabling the switch module to keep electrified self-locking when the load is electrified, and the self-locking module is also used for controlling the switch module to release the self-locking according to the second signal. The scheme has lower circuit power consumption, simple circuit structure and simple and stable IO control.
In some embodiments, the second signal is generated by at least one of an integrated circuit IC chip, a micro control unit MCU, a processor CPU, or a key switch for blocking or pulling down an input of the first end of the third switching element, and de-energizing the third switching element to de-latch the switching module. The first signal is a single pulse signal, and the single pulse signal is an instantaneous signal, so that the trigger module can be only kept on for a short time to play a role in triggering.
Please refer to fig. 2, which illustrates a circuit structure of the present utility model. As shown in fig. 2, in one embodiment, the triggering module may include a first switching element Q1, a first terminal of the first switching element Q1 is coupled to the first current source, a second terminal of the first switching element Q1 is coupled to the switching module, and a third terminal of the first switching element Q1 is coupled to a ground terminal.
The switching module may include a second switching element Q2, a first end of the second switching element Q2 is coupled to the trigger module and the self-locking module, a second end of the second switching element Q2 is coupled to the second current source, and a third end of the second switching element Q2 is coupled to the load.
The self-locking module may include a third switching element Q3, the third switching element Q3 coupling the second switching element and the load, respectively. The first end of the third switching element Q3 is coupled with the load, the second end of the third switching element is coupled with the switching module, and the third end of the third switching element Q3 is coupled with the ground.
In some embodiments, the first switching element Q1, the second switching element Q2, and the third switching element Q3 may be any one of an IGBT, a MOS, or a triode, and the electronic switching element has a small size, low power consumption, and high stability.
Referring to the schematic circuit structures of the embodiments of the present utility model shown in fig. 3-4, in the embodiment shown in fig. 3-4, the trigger module may further include a first resistor R1, a second resistor R2, a third resistor R3, and a first capacitor C1, wherein one end of R1 is coupled to one end of the first current source and one end of R2 respectively, the other end of R2 is coupled to one end of R3, one end of C1, and a first end of Q1 respectively, and the other end of R1, the other end of R3, and the other end of C1 are coupled to a ground terminal respectively.
The switch module may further include a second capacitor C2, a fourth resistor R4, and a third capacitor C3, where one end of C2 is coupled to the second current source, one end of R4, and a second end of Q2, the other end of R4 is coupled to the first end of Q2, one end of C3 is coupled to the third end of Q2 and the load, and the other end of C2 and the other end of third capacitor C3 are coupled to a ground.
The self-locking module can further comprise a fifth resistor R5 and a fourth capacitor C4, wherein one end of the fifth resistor R5 is respectively coupled with the first end of the Q3 and one end of the fourth capacitor C4, the other end of the R5 is coupled with the load, and the other end of the C4 is coupled with the ground.
Any resistor is used for limiting current and setting a default state of the circuit; any one of the capacitors is used for filtering to make the circuit more stable.
In the embodiment shown in fig. 3, Q1 may be a transistor, Q2 may be a MOS, and Q3 may be a transistor. When the domain controller is started to supply power, the first current source is controlled to generate a single pulse signal serving as a first signal to act on the base electrode of the Q1, after the short-time conduction of the Q1 is triggered, the first signal is transmitted to the grid electrode of the Q2 from the collector electrode of the Q1, after the short-time conduction of the Q2, the second current source coupled with the source electrode of the Q2 supplies power to the load coupled with the drain electrode of the Q2 in a short time. After the load is electrified, an electric signal is fed back to the base electrode of the Q3, so that after the Q3 and the Q2 are conducted, the second current source continuously supplies power to the load, and the Q3 and the Q2 are electrified and self-locked. When the power supply of the domain controller is closed, the input for generating the second signal to block or pull down the Q3 is controlled, so that the Q3 is powered down, the Q2 is powered down, the on-state is changed into the off-state, namely the self-locking is released, and the power supply of the second current source to the load is isolated.
In the embodiment shown in fig. 4, Q1 may be an insulated gate bipolar transistor IGBT, Q2 may be a metal oxide semiconductor MOS, and Q3 may be a transistor. The first current source generates a single pulse signal to act on the grid electrode of the Q1 as a first signal, the first signal is transmitted to the grid electrode of the Q2 from the collector electrode of the Q1 after the Q1 is triggered to conduct for a short time, and the second current source coupled with the source electrode of the Q2 supplies power to the load coupled with the drain electrode of the Q2 for a short time after the Q2 is enabled to conduct for a short time. After the load is electrified, an electric signal is fed back to the base electrode of the Q3, so that after the Q3 and the Q2 are conducted, the second current source continuously supplies power to the load, and the Q3 and the Q2 are electrified and self-locked. When the power supply of the domain controller is closed, the input for generating the second signal to block or pull down the Q3 is controlled, so that the Q3 is powered down, the Q2 is powered down, the on-state is changed into the off-state, namely the self-locking is released, and the power supply of the second current source to the load is isolated.
Referring to fig. 5, according to the foregoing embodiment, in the embodiment shown in fig. 5, any resistor or capacitor may be one or more, and any resistor is used for limiting current and setting a default state; any one of the capacitors is used for filtering to make the circuit more stable.
In a preferred embodiment, the resistance of the resistor R1 may be 10kΩ; the resistance value of the resistor R2 may be 10kΩ; the resistance value of the resistor R3 may be 10kΩ; the resistance value of the resistor R4 may be 10kΩ; the resistance value of the resistor R5 may be 10kΩ; the capacitance of the capacitor C1 may be 100nf; the capacitance of the capacitor C2 may be 100nf; the capacitance of the capacitor C21 may be 100nf; the capacitance of the capacitor C22 may be 100nf; the capacitance of the capacitor C3 may be 100nf; the capacitance of the capacitor C31 may be 100nf; the capacitance of capacitor C32 may be 100nf; the capacitance of the capacitor C33 may be 100nf; the capacitance of the capacitor C4 may be 100nf; the model of the triode can be S9014LT1; the model of the triode can be S9014LT1; the model of the MOS tube can be AO3407A or AO3415. The first signal may be a 12V single pulse electrical signal and the second current source output voltage may be 3V.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (10)
1. The switching circuit for controlling the turn-off of the input/output IO on the domain controller is characterized by comprising a triggering module, a switching module and a self-locking module;
the trigger module is respectively coupled with a first current source and the switch module and is used for transmitting a first signal generated by the first current source to the switch module;
the switch module is coupled with a second current source and a load and is used for controlling whether the second current source supplies power to the load according to the first signal;
the self-locking module is respectively coupled with the switch module and the load and is used for keeping the switch module electrified and self-locking when the load is electrified;
the self-locking module is also used for controlling the switch module to release self-locking according to a second signal.
2. The switching circuit of claim 1, wherein the triggering module comprises a first switching element;
a first end of the first switching element is coupled to the first current source;
a second end of the first switching element is coupled with the switching module;
the third terminal of the first switching element is coupled to ground.
3. The switching circuit of claim 1 wherein the switching module comprises a second switching element;
the first end of the second switching element is respectively coupled with the triggering module and the self-locking module;
a second terminal of the second switching element is coupled to the second current source;
a third terminal of the second switching element is coupled to the load.
4. A switching circuit according to claim 3, wherein the self-locking module comprises a third switching element;
the third switching element is coupled to the second switching element and the load, respectively;
a first end of the third switching element is coupled to the load;
a second end of the third switching element is coupled with the switching module;
the third terminal of the third switching element is coupled to ground.
5. The switching circuit of claim 2, wherein the triggering module further comprises a first resistor, a second resistor, a third resistor, and a first capacitor;
one end of the first resistor is respectively coupled with one end of the first current source and one end of the second resistor, the other end of the second resistor is respectively coupled with one end of the third resistor, one end of the first capacitor and the first end of the first switch element, and the other end of the first resistor, the other end of the third resistor and the other end of the first capacitor are respectively coupled with a ground end.
6. The switching circuit of claim 3 wherein the switching module further comprises a second capacitor, a fourth resistor, a third capacitor;
one end of the second capacitor is respectively coupled with the second current source, one end of the fourth resistor and the second end of the second switching element, the other end of the fourth resistor is coupled with the first end of the second switching element, one end of the third capacitor is respectively coupled with the third end of the second switching element and the load, and the other end of the second capacitor and the other end of the third capacitor are respectively coupled with the ground.
7. The switching circuit of claim 4, wherein the latching module further comprises a fifth resistor and a fourth capacitor;
one end of the fifth resistor is coupled with the first end of the third switching element and one end of the fourth capacitor respectively, the other end of the fifth resistor is coupled with the load, and the other end of the fourth capacitor is coupled with the ground.
8. The switching circuit according to any one of claims 2 to 4, wherein the switching element is any one of an insulated gate bipolar transistor IGBT, a metal oxide semiconductor MOS, or a transistor.
9. The switching circuit according to claim 4, wherein the second signal is generated by at least one of an integrated circuit IC chip, a micro control unit MCU, a processor CPU, or a key switch for blocking or pulling down an input of the first end of the third switching element, and the third switching element is de-energized to thereby de-latch the switching module.
10. The switching circuit of claim 2 wherein the first signal is a single pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222962417.9U CN220122885U (en) | 2022-11-03 | 2022-11-03 | Switch circuit for controlling turn-off of input/output IO on domain controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222962417.9U CN220122885U (en) | 2022-11-03 | 2022-11-03 | Switch circuit for controlling turn-off of input/output IO on domain controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220122885U true CN220122885U (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222962417.9U Active CN220122885U (en) | 2022-11-03 | 2022-11-03 | Switch circuit for controlling turn-off of input/output IO on domain controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220122885U (en) |
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2022
- 2022-11-03 CN CN202222962417.9U patent/CN220122885U/en active Active
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