CN223494453U - Power supply control circuit, automobile domain controller and automobile - Google Patents

Abstract

The utility model discloses a power supply control circuit, an automobile domain controller and an automobile, and relates to the technical field of power supply control. The power supply control circuit comprises a main control circuit, a voltage detection circuit, a driving circuit, a first switch circuit, a controlled end and a control signal output end, wherein the input end of the voltage detection circuit is connected with the power end of the system chip, the output end of the voltage detection circuit is electrically connected with the main control circuit and is used for detecting the voltage of the power end of the system chip and outputting corresponding voltage detection signals, the first input end of the driving circuit is electrically connected with the main control circuit, the second input end of the driving circuit is electrically connected with the power input end, the first switch circuit is electrically connected with the ground end, the controlled end of the driving circuit is electrically connected with the output end of the driving circuit, the second end of the driving circuit is electrically connected with the control signal output end, the main control circuit is used for receiving the voltage detection signals and controlling the driving circuit to output corresponding driving signals, and the first switch circuit is used for receiving the driving signals to conduct or break the paths between the control signal output end and the ground end. The utility model aims to improve the stability of SOC power supply in an automobile domain controller.

Description

Power supply control circuit, automobile domain controller and automobile

Technical Field

The present utility model relates to the field of power supply control technologies, and in particular, to a power supply control circuit, an automobile domain controller, and an automobile.

Background

With the development of automobile intellectualization, domain controllers (Domain Controller) are becoming more and more complex, particularly in the fields of Advanced Driving Assistance Systems (ADAS), infotainment systems, body electronics systems, etc. Domain controllers often integrate multiple functions and often carry multiple different types of System on chips (socs) in order to meet high performance computing needs and to implement various intelligent functions. These socs may be GPUs dedicated to image processing, AI accelerators for deep learning, general purpose processors, etc.

At present, various types of SOCs are often carried on an automobile domain controller for joint use, most of the domain controllers are awakened through a CAN, and no matter what type of SOCs are in the power-on process, the SOCs are likely to be subjected to the CAN rapid dormancy awakening to cause abnormal power supply of the SOCs, so that the starting and the functions of the domain controllers are affected.

Disclosure of utility model

The utility model mainly aims to provide a power supply control circuit, an automobile domain controller and an automobile, and aims to improve the stability of SOC power supply in the automobile domain controller.

In order to achieve the above object, the present utility model provides a power supply control circuit applied to an automotive domain controller, the automotive domain controller includes a system chip and a CAN communication module, the system chip is electrically connected with the CAN communication module, the power supply control circuit includes:

a main control circuit;

the system comprises a system chip, a voltage detection circuit, a control circuit, a voltage detection circuit and a control circuit, wherein the input end of the voltage detection circuit is connected with the power end of the system chip, and the output end of the voltage detection circuit is electrically connected with the control circuit;

The first input end of the driving circuit is electrically connected with the main control circuit, and the second input end of the driving circuit is electrically connected with the power supply input end;

The first end of the first switch circuit is electrically connected with the grounding end, the controlled end of the first switch circuit is electrically connected with the output end of the driving circuit, and the second end of the first switch circuit is electrically connected with the control signal output end;

The main control circuit is used for receiving the voltage detection signal and controlling the driving circuit to output a corresponding driving signal, and the first switch circuit is used for receiving the driving signal so as to conduct or break a passage between the control signal output end and the grounding end.

In one embodiment, the driving circuit includes:

the first end of the second switch circuit is electrically connected with the power input end, and the controlled end of the second switch circuit is electrically connected with the main control circuit;

The first input end of the logic control circuit is electrically connected with the enabling control end, and the second input end of the logic control circuit is electrically connected with the second end of the second switch circuit;

The second switch circuit is used for receiving a first control signal input by the main control circuit so as to switch on or off a passage between the power input end and the logic control circuit; the logic control circuit is used for receiving the second control signal output by the second switch circuit and the third control signal input by the enabling control end so as to output a corresponding driving signal to the first switch circuit.

In an embodiment, the second switching circuit includes:

The controlled end of the third switching circuit is electrically connected with the main control circuit, and the second end of the third switching circuit is connected with the grounding end;

The first end of the fourth switching circuit is electrically connected with the power input end, the controlled end of the fourth switching circuit is electrically connected with the first end of the third switching circuit, and the second end of the fourth switching circuit is electrically connected with the logic control circuit;

the third switch circuit is used for receiving a first control signal output by the main control circuit to conduct or break a passage between the grounding end and a controlled end of the fourth switch circuit, and the fourth switch circuit is used for conducting or breaking a passage between the power input end and the logic control circuit according to a conducting state between the grounding end and the controlled end of the fourth switch circuit.

In one embodiment, the third switching circuit comprises a first resistor, a second resistor and a first switching tube, and the fourth switching circuit comprises a third resistor, a fourth resistor and a second switching tube;

The first end of the first resistor is electrically connected with the main control circuit, the second end of the first resistor is electrically connected with the controlled end of the first switching tube and the first end of the second resistor, the second end of the second resistor is electrically connected with the second end of the first switching tube and the grounding end, the first end of the first switching tube is electrically connected with the second end of the fourth resistor, the first end of the fourth resistor is electrically connected with the controlled end of the second switching tube and the second end of the third resistor, the first end of the third resistor is electrically connected with the first end of the second switching tube and the power input end, and the second end of the second switching tube is electrically connected with the logic control circuit.

In one embodiment, the logic control circuit includes a fifth resistor, a sixth resistor, a first capacitor, a second capacitor, a first and gate;

The first end of the fifth resistor is electrically connected with the second end of the second switch circuit, the second end of the fifth resistor is electrically connected with the second input end of the first AND gate, the first input end of the first AND gate is electrically connected with the enabling control end, the power end of the first AND gate is electrically connected with the power input end and the first end of the first capacitor, the output end of the first AND gate is electrically connected with the first end of the second capacitor, the first end of the sixth resistor and the controlled end of the first switch circuit, the second end of the first capacitor is electrically connected with the ground end, the second end of the second capacitor is electrically connected with the ground end, and the second end of the sixth resistor is electrically connected with the ground end.

In one embodiment, the first switching circuit comprises a seventh resistor and a third switching tube;

The first end of the seventh resistor is electrically connected with the power input end, the second end of the seventh resistor is electrically connected with the first end of the third switching tube and the control signal output end, and the controlled end of the third switching tube is electrically connected with the output end of the logic control circuit.

In an embodiment, the power supply control circuit further comprises a voltage stabilizing circuit, and the voltage stabilizing circuit is electrically connected with the main control circuit.

In an embodiment, the power supply control circuit further includes an output filter circuit, and the output filter circuit is electrically connected to the first end of the first switch circuit.

The utility model also provides an automobile domain controller, which comprises a system chip, a CAN communication module, a power supply circuit and the power supply control circuit;

The system chip is respectively and electrically connected with the CAN communication module and the power supply circuit, and the control signal output end of the power supply control circuit is electrically connected with the power supply circuit.

The utility model also provides an automobile comprising the automobile domain controller.

According to the technical scheme, the voltage detection circuit is adopted to detect the voltage of the power supply end of the system chip in the automobile domain controller, and the voltage detection signal is output to the main control circuit, so that the main control circuit confirms whether the system chip is in a power supply state. When the main control circuit confirms that the system chip is not in a power supply state, the control driving circuit outputs a corresponding driving signal to the first switch circuit, so that the first switch circuit conducts a passage between the grounding end and the signal output end according to the driving signal. It CAN be understood that after the signal output end is conducted with the grounding end, the signal output by the signal output end is pulled down, so that the subsequent circuit receives the signal, and the corresponding power circuit is controlled to supply power to the system chip, so that the problem of abnormal SOC power supply caused by rapid dormancy and awakening of the CAN communication module is effectively avoided, and the stability of SOC power supply in the automobile domain controller is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a power control circuit according to the present utility model;

FIG. 2 is a schematic block diagram of an embodiment of a power control circuit according to the present utility model;

FIG. 3 is a schematic block diagram illustrating a power control circuit according to another embodiment of the present utility model;

fig. 4 is a circuit diagram of an embodiment of a power supply control circuit according to the present utility model.

Reference numerals illustrate:

10. The main control circuit, 20, the voltage detection circuit, 30, the driving circuit, 31, the second switching circuit, 32, the logic control circuit, 40, the first switching circuit, 50, the voltage stabilizing circuit, 60, the filter circuit, R1-R9, the first resistor-the ninth resistor, C1-C3, the first capacitor-the third capacitor, Q1-Q3, the first switching tube-the third switching tube.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

With the development of automobile intellectualization, domain controllers (Domain Controller) are becoming more and more complex, particularly in the fields of Advanced Driving Assistance Systems (ADAS), infotainment systems, body electronics systems, etc. Domain controllers often integrate multiple functions and often carry multiple different types of System on chips (socs) in order to meet high performance computing needs and to implement various intelligent functions. These socs may be GPUs dedicated to image processing, AI accelerators for deep learning, general purpose processors, etc.

At present, various types of SOCs are often carried on an automobile domain controller for joint use, most of the domain controllers are awakened through a CAN, and no matter what type of SOCs are in the power-on process, the SOCs are likely to be subjected to the CAN rapid dormancy awakening to cause abnormal power supply of the SOCs, so that the starting and the functions of the domain controllers are affected.

In order to solve the above-mentioned problems, referring to fig. 1 to 4, the present utility model proposes a power supply control circuit applied to an automotive domain controller, the automotive domain controller including a system chip and a CAN communication module, the system chip being electrically connected with the CAN communication module, the power supply control circuit comprising:

a main control circuit 10;

The system comprises a voltage detection circuit 20, a control circuit 10 and a control circuit, wherein the input end of the voltage detection circuit 20 is connected with the power end of the system chip, and the output end of the voltage detection circuit 20 is electrically connected with the control circuit 10;

The first input end of the driving circuit 30 is electrically connected with the main control circuit 10, and the second input end of the driving circuit 30 is electrically connected with the power supply input end;

A first switch circuit 40, wherein a first end of the first switch circuit 40 is electrically connected with a ground terminal, a controlled end of the first switch circuit 40 is electrically connected with an output terminal of the driving circuit 30, and a second end of the first switch circuit 40 is electrically connected with a control signal output terminal;

The main control circuit 10 is configured to receive the voltage detection signal and control the driving circuit 30 to output a corresponding driving signal, and the first switch circuit 40 is configured to receive the driving signal to turn on or off a path between the control signal output terminal and the ground terminal.

It will be appreciated that CAN bus communication is one of the primary ways in which automotive networks communicate, and is used to transmit sensor data and other critical information. When the vehicle is in a dormant state, certain events (such as door opening, key fob signals, etc.) CAN wake up the associated domain controller via CAN bus communications. However, during CAN wakeup, if the power up sequence of the domain controller or the system chip is incorrect, it may result in some components not being sufficiently initialized. For example, if the system chip dependent power rail fails to reach steady state in time, a start-up failure or other abnormal behavior may be initiated. Still alternatively, if there is insufficient delay to ensure that all necessary power rails are stable after the CAN wake-up signal is triggered, the system chip may begin to attempt to operate before it is not fully ready, which may result in a power failure. And, rapid wake-up from sleep state means that a large amount of current supply is required in a short time to meet the demands of the system chip and its peripherals. If the power supply circuit cannot effectively cope with the transient load change, voltage drop or fluctuation can be caused, and the normal operation of the system chip is affected. Therefore, a corresponding circuit needs to be provided to ensure that the system chip is also in a power supply state when the automobile domain controller is in a power supply state, so as to ensure the working stability of the automobile domain controller.

In this embodiment, the main control circuit 10 may be implemented by a main controller, such as an MCU (Microcontroller Unit, micro control unit), a DSP (DIGITAL SIGNAL Process, digital signal processing chip), an FPGA (Field Programmable GATE ARRAY, programmable gate array chip), or the like. The main control circuit 10 is configured to receive the voltage detection signal output by the voltage detection circuit 20, to confirm whether the system chip is currently in a power supply state, and output a corresponding control signal to the driving circuit 30 when confirming that the system chip is not currently in the power supply state, so that the driving circuit 30 outputs a corresponding driving signal to the first switch circuit 40, and further, the power supply circuit supplies power to the system chip after receiving the corresponding signal. The main control circuit 10 will first determine whether the automobile domain controller is in a power supply state, so as to determine the current power supply state of the system chip.

In the present embodiment, the voltage detection circuit 20 may be implemented using a voltage division circuit, a differential amplification circuit, a comparator circuit, a voltage detection chip, or the like. Taking the voltage dividing circuit as an example, the voltage dividing resistor circuit is composed of two resistors connected in series, one end of one resistor is connected to a power supply end, the other end of the other resistor is connected to one end of the other resistor, and the other end of the second resistor is grounded. The node between these two resistors is connected to the analog input port of the master circuit 10. The main control circuit 10 can convert the input analog voltage signal into a digital voltage signal through a built-in analog-to-digital conversion module, and calculate the actual input voltage value through a preset software algorithm. The main control circuit 10 confirms whether a corresponding voltage is input to the system chip by processing the voltage detection signal, and outputs a corresponding control signal to the driving circuit 30, so that the driving circuit 30 outputs a corresponding driving signal.

In the present embodiment, the driving circuit 30 may be implemented using a switching circuit, a logic control circuit 32, a pulse transformer, or the like. The driving circuit 30 is electrically connected to the main control circuit 10 to receive the control signal output by the main control circuit 10 and output a corresponding driving signal to the first switch circuit 40. It will be appreciated that the voltage of the control signal output by the master circuit 10 is also different when implemented using different circuits. For example, when the voltage of the control signal output by the main control circuit 10 is 12V, further processing is required by the driving circuit 30 to make the voltage of the driving signal conform to the voltage required by the controlled end of the first switch circuit 40.

Optionally, the driving circuit 30 includes:

A second switch circuit 31, wherein a first end of the second switch circuit 31 is electrically connected with a power input end, and a controlled end of the second switch circuit 31 is electrically connected with the main control circuit 10;

A logic control circuit 32, wherein a first input end of the logic control circuit 32 is electrically connected with an enabling control end, and a second input end of the logic control circuit 32 is electrically connected with a second end of the second switch circuit 31;

The second switch circuit 31 is configured to receive a first control signal input by the main control circuit 10 to switch on or off a path between the power input end and the logic control circuit 32, and the logic control circuit 32 is configured to receive a second control signal output by the second switch circuit 31 and a third control signal input by the enable control end to output a corresponding driving signal to the first switch circuit 40.

In the present embodiment, the driving circuit 30 is implemented using the second switching circuit 31 and the logic control circuit 32. The second switching circuit 31 may be implemented by at least one switching transistor, such as a MOS transistor, an IGBT transistor, a thyristor, a triode, a power transistor, etc., and the logic control circuit 32 may be implemented by an and circuit, an not circuit, an or circuit, etc. Further, a first end of the second switch circuit 31 is electrically connected to the power input end, a controlled end of the first end of the second switch circuit 31 is electrically connected to the main control circuit 10, and a second end of the second switch circuit 31 is electrically connected to the logic control circuit 32. The second switching circuit 31 receives the first control signal outputted from the main control circuit 10, thereby turning on or off the path between the power input terminal and the logic control circuit 32. It can be understood that the voltage output from the power input terminal meets the working requirement of the logic control circuit 32, and the second switch circuit 31 can also receive the first control signal output from the main control circuit 10 and execute the corresponding action. The logic control circuit 32 receives the third control signal from the enable control terminal and the second control signal from the second switch circuit 31 by electrically connecting the first input terminal to the enable control terminal and the second input terminal to the second terminal of the second switch circuit 31, respectively. Wherein the second switching circuit 31 will conduct a path between the power input terminal and the second input terminal of the logic control circuit 32 when in the on state. At this time, the second control signal is a high level signal output from the power input terminal. The second switching circuit 31 will open the path between the power supply input and the second input of the logic control circuit 32 when in the open state. At this time, the second control signal is a low level signal with the ground terminal pulled down. Further, the enabling control terminal is a power supply state output terminal of the automobile domain controller. When the automobile domain controller is in a power supply state, the enabling control end outputs a high-level signal, and when the automobile domain controller is not in the power supply state, the enabling control end outputs a low-level signal.

Optionally, the second switching circuit 31 includes:

A third switch circuit, wherein a controlled end of the third switch circuit is electrically connected with the main control circuit 10, and a second end of the third switch circuit is connected with the grounding end;

A fourth switching circuit, a first end of which is electrically connected to the power input terminal, a controlled end of which is electrically connected to the first end of the third switching circuit, and a second end of which is electrically connected to the logic control circuit 32;

the third switch circuit is configured to receive a first control signal output by the master circuit 10, to turn on or off a path between the ground terminal and a controlled terminal of the fourth switch circuit, and the fourth switch circuit is configured to turn on or off a path between the power input terminal and the logic control circuit 32 according to a conduction state between the ground terminal and the controlled terminal of the fourth switch circuit.

The third switching circuit comprises a first resistor R1, a second resistor R2 and a first switching tube Q1, and the fourth switching circuit comprises a third resistor R3, a fourth resistor R4 and a second switching tube Q2;

The first end of the first resistor R1 is electrically connected to the master control circuit 10, the second end of the first resistor R1 is electrically connected to the controlled end of the first switch tube Q1 and the first end of the second resistor R2, the second end of the second resistor R2 is electrically connected to the second end of the first switch tube Q1 and the ground end, the first end of the first switch tube Q1 is electrically connected to the second end of the fourth resistor R4, the first end of the fourth resistor R4 is electrically connected to the controlled end of the second switch tube Q2 and the second end of the third resistor R3, the first end of the third resistor R3 is electrically connected to the first end of the second switch tube Q2 and the power input end, and the second end of the second switch tube Q2 is electrically connected to the logic control circuit 32.

The logic control circuit 32 includes a fifth resistor R5, a sixth resistor R6, a first capacitor C1, a second capacitor C2, and a first and gate;

The first end of the fifth resistor R5 is electrically connected to the second end of the second switch circuit 31, the second end of the fifth resistor R5 is electrically connected to the second input end of the first and gate, the first input end of the first and gate is electrically connected to the enable control end, the power supply end of the first and gate is electrically connected to the power supply input end and the first end of the first capacitor C1, the output end of the first and gate is electrically connected to the first end of the second capacitor C2, the first end of the sixth resistor R6 and the controlled end of the first switch circuit 40, the second end of the first capacitor C1 is electrically connected to the ground end, the second end of the second capacitor C2 is electrically connected to the ground end, and the second end of the sixth resistor R6 is electrically connected to the ground end.

In this embodiment, the first switching tube Q1 is used for switching on or off a path between the ground terminal and the controlled terminal of the second switching tube Q2 according to the first control signal output by the main control circuit 10, and the second switching tube Q2 is used for switching on or off a path between the power input terminal and the logic control circuit 32 according to whether the controlled terminal is switched on with the ground terminal. For example, the first switching transistor Q1 is a high-level turn-on NPN triode, and the second switching transistor Q2 is a low-level turn-on PNP triode. When the first control signal is at a high level, the first switching tube Q1 is turned on to make the controlled end of the second switching tube Q2 grounded, and the first end of the second switching tube Q2 is electrically connected to the power input end, so that the second switching tube Q2 is turned on, and then the second control signal is output to the first and gate. The second control signal is a voltage signal input by the power input end. When no signal is input to the main control circuit 10, a corresponding pull-down resistor, namely, an eighth resistor R8 is provided, so that the first control signal received by the controlled end of the first switching tube Q1 is at a low level, and the first switching tube Q1 is turned off. At this time, the controlled end of the second switching tube Q2 is electrically connected to the power input end through the third resistor R3, and the first end of the second switching tube Q2 is electrically connected to the power input end, so that the second switching tube Q2 is turned off. The fifth circuit is also a pull-down resistor, and when the second switching tube Q2 is turned off, the second control signal received by the first and gate is a low level signal. It is understood that the third control signal input at the enable control terminal is a state signal of the automobile domain controller. For example, when the automobile domain controller is in a power supply state, the third control signal input by the control end is enabled to be a high-level signal, and when the automobile domain controller is not in the power supply state, the third control signal input by the control end is enabled to be a low-level signal. Thus, when the automotive domain controller is in the power supply state, the first and gate will output a driving signal to drive the first switching circuit 40 to be turned on when the first control signal controls the third switching circuit to be turned on.

Optionally, the first switching circuit 40 includes a seventh resistor R7 and a third switching tube Q3;

The first end of the seventh resistor R7 is electrically connected to the power input end, the second end of the seventh resistor R7 is electrically connected to the first end of the third switching tube Q3 and the control signal output end, and the controlled end of the third switching tube Q3 is electrically connected to the output end of the logic control circuit 32.

As can be seen from the above, the controlled end of the third switching tube Q3 is electrically connected to the output end of the logic control circuit 32. Therefore, the type selection of the third switching transistor Q3 needs to correspond to the driving signal output from the logic control circuit 32. For example, when the driving signal output by the logic control circuit 32 is a high level signal, the third switching transistor Q3 needs to be driven to be turned on, and the third switching transistor Q3 may be implemented by an NMOS transistor. When the third switching tube Q3 is turned on, the path between the control signal output terminal and the ground terminal is turned on, so that the signal output terminal outputs a low level signal. It will be appreciated that the power supply circuit in the automotive domain controller will determine whether it is necessary to power the system chip based on the level signal output from the signal output terminal.

In the present embodiment, the voltage detection circuit 20 is used to detect the voltage of the power supply terminal of the system chip in the automotive domain controller, and the voltage detection signal is output to the main control circuit 10, so that the main control circuit 10 confirms whether the system chip is in the power supply state. When the main control circuit 10 confirms that the system chip is not in the power supply state, the control driving circuit 30 outputs a corresponding driving signal to the first switch circuit 40, so that the first switch circuit 40 switches on the path between the ground terminal and the signal output terminal according to the driving signal. It CAN be understood that after the signal output end is conducted with the grounding end, the signal output by the signal output end is pulled down, so that the subsequent circuit receives the signal, and the corresponding power circuit is controlled to supply power to the system chip, so that the problem of abnormal power supply of the SOC due to rapid dormancy and awakening of the CAN communication module is effectively avoided, and the stability of power supply of the SOC in the automobile domain controller is effectively improved through closed loop control and a stable awakening mode.

In an embodiment of the present utility model, the power supply control circuit further includes a voltage stabilizing circuit 50, and the voltage stabilizing circuit 50 is electrically connected to the master control circuit 10.

In this embodiment, the voltage stabilizing circuit 50 may be implemented by a voltage stabilizer or a voltage stabilizing diode, so that the third switching circuit in the driving circuit 30 may stably receive the first control signal output by the main control circuit 10 and quickly implement on or off of the switching tube.

Referring to fig. 3, in an embodiment of the present utility model, the power supply control circuit further includes an output filter circuit 60, and the output filter circuit 60 is electrically connected to the first end of the first switch circuit 40.

In this embodiment, the output filter circuit 60 may be implemented by using a filter capacitor or a corresponding filter, so as to stabilize the level signal output by the control signal output end, and ensure that the power supply circuit can accurately execute the corresponding action when receiving the level signal output by the control signal output end. For example, the power supply circuit supplies power to the system chip when receiving a low level signal.

Referring to fig. 3, the utility model further provides an automobile domain controller, which comprises a system chip, a CAN communication module, a power supply circuit and the power supply control circuit according to any one of the above, wherein the system chip is electrically connected with the CAN communication module and the power supply circuit respectively, and a control signal output end of the power supply control circuit is electrically connected with the power supply circuit. It is noted that, because the automotive domain controller of the present utility model is based on the above-mentioned power supply control circuit, the embodiments of the automotive domain controller of the present utility model include all the technical schemes of all the embodiments of the above-mentioned power supply control circuit, and the achieved technical effects are identical, and are not described herein again.

The utility model also provides an automobile comprising the automobile domain controller. It is noted that, because the automobile of the present utility model is based on the above-mentioned automobile domain controller, the embodiments of the automobile of the present utility model include all the technical solutions of all the embodiments of the above-mentioned automobile domain controller, and the achieved technical effects are identical, and are not repeated herein.

The foregoing description is only exemplary embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims (10)

1. The utility model provides a power supply control circuit, is applied to car domain controller, its characterized in that, car domain controller includes system chip and CAN communication module, the system chip with CAN communication module electricity is connected, power supply control circuit includes:

a main control circuit;

the system comprises a system chip, a voltage detection circuit, a control circuit, a voltage detection circuit and a control circuit, wherein the input end of the voltage detection circuit is connected with the power end of the system chip, and the output end of the voltage detection circuit is electrically connected with the control circuit;

The first input end of the driving circuit is electrically connected with the main control circuit, and the second input end of the driving circuit is electrically connected with the power supply input end;

The first end of the first switch circuit is electrically connected with the grounding end, the controlled end of the first switch circuit is electrically connected with the output end of the driving circuit, and the second end of the first switch circuit is electrically connected with the control signal output end;

The main control circuit is used for receiving the voltage detection signal and controlling the driving circuit to output a corresponding driving signal, and the first switch circuit is used for receiving the driving signal so as to conduct or break a passage between the control signal output end and the grounding end.

2. The power supply control circuit of claim 1, wherein the drive circuit comprises:

the first end of the second switch circuit is electrically connected with the power input end, and the controlled end of the second switch circuit is electrically connected with the main control circuit;

The first input end of the logic control circuit is electrically connected with the enabling control end, and the second input end of the logic control circuit is electrically connected with the second end of the second switch circuit;

The second switch circuit is used for receiving a first control signal input by the main control circuit so as to switch on or off a passage between the power input end and the logic control circuit; the logic control circuit is used for receiving the second control signal output by the second switch circuit and the third control signal input by the enabling control end so as to output a corresponding driving signal to the first switch circuit.

3. The power supply control circuit of claim 2, wherein the second switching circuit comprises:

The controlled end of the third switching circuit is electrically connected with the main control circuit, and the second end of the third switching circuit is connected with the grounding end;

The first end of the fourth switching circuit is electrically connected with the power input end, the controlled end of the fourth switching circuit is electrically connected with the first end of the third switching circuit, and the second end of the fourth switching circuit is electrically connected with the logic control circuit;

the third switch circuit is used for receiving a first control signal output by the main control circuit to conduct or break a passage between the grounding end and a controlled end of the fourth switch circuit, and the fourth switch circuit is used for conducting or breaking a passage between the power input end and the logic control circuit according to a conducting state between the grounding end and the controlled end of the fourth switch circuit.

4. The power supply control circuit of claim 3, wherein the third switching circuit comprises a first resistor, a second resistor, a first switching tube, and wherein the fourth switching circuit comprises a third resistor, a fourth resistor, and a second switching tube;

The first end of the first resistor is electrically connected with the main control circuit, the second end of the first resistor is electrically connected with the controlled end of the first switching tube and the first end of the second resistor, the second end of the second resistor is electrically connected with the second end of the first switching tube and the grounding end, the first end of the first switching tube is electrically connected with the second end of the fourth resistor, the first end of the fourth resistor is electrically connected with the controlled end of the second switching tube and the second end of the third resistor, the first end of the third resistor is electrically connected with the first end of the second switching tube and the power input end, and the second end of the second switching tube is electrically connected with the logic control circuit.

5. The power control circuit of claim 2, wherein the logic control circuit comprises a fifth resistor, a sixth resistor, a first capacitor, a second capacitor, a first and gate;

The first end of the fifth resistor is electrically connected with the second end of the second switch circuit, the second end of the fifth resistor is electrically connected with the second input end of the first AND gate, the first input end of the first AND gate is electrically connected with the enabling control end, the power end of the first AND gate is electrically connected with the power input end and the first end of the first capacitor, the output end of the first AND gate is electrically connected with the first end of the second capacitor, the first end of the sixth resistor and the controlled end of the first switch circuit, the second end of the first capacitor is electrically connected with the ground end, the second end of the second capacitor is electrically connected with the ground end, and the second end of the sixth resistor is electrically connected with the ground end.

6. The power supply control circuit according to claim 2, wherein the first switching circuit includes a seventh resistor, a third switching tube;

The first end of the seventh resistor is electrically connected with the power input end, the second end of the seventh resistor is electrically connected with the first end of the third switching tube and the control signal output end, and the controlled end of the third switching tube is electrically connected with the output end of the logic control circuit.

7. The power control circuit of claim 1, wherein the power control circuit further comprises a voltage regulator circuit electrically connected to the master circuit.

8. The power control circuit of claim 1, further comprising an output filter circuit electrically connected to the first end of the first switching circuit.

9. An automotive domain controller, characterized in that the automotive domain controller comprises a system chip, a CAN communication module, a power supply circuit and the power supply control circuit according to any one of claims 1 to 8;

The system chip is respectively and electrically connected with the CAN communication module and the power supply circuit, and the control signal output end of the power supply control circuit is electrically connected with the power supply circuit.

10. An automobile is characterized in that, the automobile comprising the automobile domain controller of claim 9.