Control circuit for cooperative starting of automobile multi-core processor power supply

Abstract

The utility model provides a control circuit for cooperative starting of an automobile multi-core processor power supply, and relates to the technical field of electronic circuits. Comprising the steps that multiple layers of application power supply sub-modules are connected, multiple stages of power supply conversion units are sequentially arranged on each layer of application power supply sub-module according to voltage values from high to low, and the multiple layers of application power supply sub-modules are combined for use; the adjacent next layer of power supply sub-module sequentially starts the corresponding multi-stage power supply conversion units to perform power supply conversion and control each layer of power supply to work, so that the power-on work of the multi-core processor is controlled, the flexibility of planning the planning application of the multi-core processor is improved, the starting error rate of the multi-core processor is reduced, and the time sequence distribution efficiency of the multi-core processor is improved. The multi-core processor can be started according to a correct sequence and a correct time sequence in an application environment of a commercial vehicle, so that stable and reliable power supply is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic circuits, in particular to a control circuit for coordinated starting of power supplies for a multi-core processor of an automobile. Background Art

[0002] With the development trend of intelligent and integrated automobiles, single-core processors of on-board chips cannot meet the performance requirements of automotive electrical equipment, and on-board equipment will use multi-core processors to achieve higher processing capabilities. Compared with single-core processors, the power domain of multi-core processors is more complex and is divided into multiple power modules. The startup of each power module has strict timing requirements.

[0003] Currently, there is an urgent need for an effective planning and application of single-core processors. If the startup process of the power domain of a multi-core processor cannot be reasonably planned, startup timing errors may occur, resulting in the failure of the multi-core processor to start. Utility Model Content

[0004] The main purpose of the utility model is to provide a control circuit for the coordinated startup of a multi-core processor power supply of an automobile, so as to solve the technical problem that the startup timing is wrong and the multi-core processor cannot be started due to unreasonable planning of the multi-core processor of the automobile.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a control circuit for coordinated startup of a multi-core processor power supply of an automobile, including a power supply module that converts the vehicle-mounted access power supply into a first voltage, and also includes:

[0006] The power supply module is respectively connected to multiple layers of application power supply sub-modules, each layer of application power supply sub-module is provided with multiple levels of power supply conversion units in order from high to low according to the voltage value, and the application power supply sub-module is used to control the power-on of the multi-core processor;

[0007] Multi-layer application power sub-modules are used in combination: according to the preset reset signal of the power sub-module of the previous layer, the adjacent power sub-module of the next layer starts the corresponding multi-level power conversion unit in turn to perform power conversion, and controls the power work of each layer. When the power conversion of the power sub-module of the last layer is completed, the power module is connected according to the corresponding preset reset signal, thereby controlling the power-on work of the multi-core processor.

[0008] In the preferred solution, the multi-layer application power submodule includes power submodules of the real-time layer, the security layer, and the application layer, corresponding to different application scenarios;

[0009] The multi-stage power conversion unit of the real-time layer includes a real-time domain IO power supply connected to the power module, and the real-time domain IO power supply is sequentially connected to the time domain internal logic power supply and the real-time domain reset circuit;

[0010] The multi-level power conversion unit of the security layer includes a security domain IO power supply connected to the power module, and the security domain IO power supply is sequentially connected to the security domain analog power supply, the security internal logic power supply and the security domain reset circuit;

[0011] The multi-level power conversion unit of the application layer includes an application domain IO power supply connected to the power module, and the application domain IO power supply is sequentially connected to the application domain analog power supply, the application internal logic power supply and the application domain reset circuit.

[0012] The utility model provides a control circuit for coordinated power startup of a multi-core processor of an automobile, including providing working power to the circuit through a power module after converting a first voltage, connecting multiple layers of application power submodules to meet the application of multiple different fields, and setting multiple levels of power conversion units in each layer of application power submodules in order from high to low according to the voltage value to meet the requirements of different voltages from large to small, and connecting the multi-core processor for control when the energy conversion function is completed. Each layer can be controlled separately, or each layer can be connected to combine and coordinately control the multi-core processor, solving the problem of unreasonable planning of the multi-core processor, resulting in startup timing errors and inability to start the multi-core processor, realizing a flexible planning mechanism without increasing production costs, improving the flexibility of planning the application of the multi-core processor, reducing the startup error rate of the multi-core processor, and improving the efficiency and accuracy of the timing allocation of the multi-core processor, ensuring that the multi-core processor can be started in the correct order and timing in the commercial vehicle application environment, thereby providing a stable and reliable power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 This is a control circuit structure diagram of the utility model;

[0015] Figure 2 This is a 24V to 5V DC-DC power module circuit of the utility model;

[0016] Figure 3 It is a real-time domain IO power supply circuit of the utility model;

[0017] Figure 4 It is a real-time domain internal logic power supply circuit of the utility model;

[0018] Figure 5 It is a real-time domain reset circuit of the utility model;

[0019] Figure 6 It is the safety domain IO power supply circuit of the utility model;

[0020] Figure 7 It is a safety domain analog power supply circuit of the utility model;

[0021] Figure 8 It is the internal logic power supply circuit of the safety domain of the utility model;

[0022] Fig. 9 It is a safety domain reset circuit of the utility model;

[0023] Fig.10 This is the IO power supply circuit of the application domain of the utility model;

[0024] Fig.11 The utility model is applied to simulate power supply circuit;

[0025] Fig.12 This is the internal logic power supply circuit of the utility model application domain;

[0026] Fig.13 The utility model is an application domain reset circuit. DETAILED DESCRIPTION

[0027] Example 1

[0028] like Figure 1-13 As shown, a control circuit for coordinated startup of a power supply of a multi-core processor of an automobile includes a power supply module for converting a vehicle-mounted access power supply into a first voltage, and also includes:

[0029] The power supply module is respectively connected to multiple layers of application power sub-modules, each layer of application power sub-module is provided with multiple levels of power conversion units in sequence from high to low according to the voltage value, and the application power sub-module is used to control the power-on of the multi-core processor.

[0030] Multiple layers of application power submodules are used in combination to control the power-on of a multi-core processor: according to the preset reset signal of the power submodule of the previous layer, the adjacent power submodule of the next layer starts the corresponding multi-level power conversion unit in turn to perform power conversion and control the power work of each layer. When the power conversion of the power submodule of the last layer is completed, the power module is connected according to the corresponding preset reset signal to control the power-on of the multi-core processor.

[0031] In this embodiment, the power supply module after converting the first voltage provides the circuit with working power, and multiple layers of application power submodules are connected to meet the application of multiple different fields. In each layer of application power submodule, multiple levels of power conversion units are arranged in order from high to low according to the voltage value to meet the needs of different voltages from large to small. When the energy conversion function is completed, the multi-core processor is connected for control. After the application power submodules of each layer are connected, they are combined to coordinately control the multi-core processor, which solves the problem of unreasonable planning of the multi-core processor, resulting in startup timing errors and inability to start the multi-core processor, improves the flexibility of planning the application of the multi-core processor, reduces the startup error rate of the multi-core processor, and improves the efficiency of the timing allocation of the multi-core processor, ensuring that the multi-core processor can be started in the correct order and timing in the commercial vehicle application environment, thereby providing a stable and reliable power supply.

[0032] like Figure 1 As shown, in this embodiment, the access power supply can be 24V, the first voltage is 5V, the second voltage is 3.3V, the third voltage is 1.8V, and the fourth voltage is 0.8V. The specific voltage values ​​can be adjusted according to the actual situation. The multi-layer application power submodule is connected to the power module that outputs 5V. Each layer of the application power submodule contains a multi-level power conversion unit, which is set in sequence from high to low according to the voltage value, and is used to gradually convert the power supply to different voltage levels required by the multi-core processor.

[0033] In this embodiment, if Figure 2 As shown, the power module that converts the vehicle-connected power into the first voltage: the starting point of the entire circuit, which converts the power connected to the vehicle into 5V suitable for the operation of the multi-core processor.

[0034] Coordinated startup process of power conversion: When used in combination, through a preset reset signal, the adjacent next-layer power sub-module will start the corresponding multi-level power conversion unit in turn, and perform power conversion layer by layer to ensure that the power is started in the correct order and timing at each level to meet the power requirements of the multi-core processor.

[0035] Final multi-core processor power-on operation: When the last layer of power submodule completes the power conversion, it is connected to the power module according to the corresponding preset reset signal, thereby controlling the final power-on and operation of the multi-core processor.

[0036] This embodiment supports individual control and combined use: each layer of application power submodule has independent control capability and can independently control the power-on of the multi-core processor. In addition, these modules can also be used in combination, that is, multiple levels work together according to a preset reset signal.

[0037] In the preferred solution, the multi-layer application power submodule includes power submodules of the real-time layer, the security layer and the application layer, corresponding to different application scenarios.

[0038] The multi-level power conversion unit of the real-time layer includes a real-time domain IO power supply connected to the power module, and the real-time domain IO power supply is sequentially connected to the time domain internal logic power supply and the real-time domain reset circuit.

[0039] The multi-level power conversion unit of the security layer includes a security domain IO power supply connected to the power module, and the security domain IO power supply is connected to the security domain analog power supply, the security internal logic power supply and the security domain reset circuit in sequence.

[0040] The multi-level power conversion unit of the application layer includes an application domain IO power supply connected to the power module, and the application domain IO power supply is sequentially connected to the application domain analog power supply, the application internal logic power supply and the application domain reset circuit.

[0041] like Figure 1 As shown, each layer of application power submodule includes multiple levels of power conversion units.

[0042] In the preferred solution, after the power module is started, it outputs 5V power supply, the power submodule of the real-time layer starts the real-time domain IO power supply to convert and output 1.8V power supply, the internal logic power supply of the real-time domain works and outputs 0.8V power supply; then the real-time domain reset circuit is connected to output a reset signal to control the power-on of the multi-core processor.

[0043] like Figure 3 As shown, the real-time domain IO power supply circuit converts the 5V power supply into a 1.8V power supply, and powers on the real-time domain IO power supply; Figure 4 The figure shows the internal logic power supply of the real-time domain: the 1.8V power supply is converted into a 0.8V power supply to power up the internal logic power supply of the real-time domain. The voltage is set in multiple levels from high to low.

[0044] like Figure 5 The figure shows a real-time domain reset circuit. When the internal logic power supply of the real-time domain is powered on, the real-time domain reset signal RTC_RESET is changed from a low level to a high level reset signal.

[0045] If the real-time layer is used alone, it can be connected to and control the power-on operation of the multi-core processor when RTC_RESET is high.

[0046] If not, it will serve as the start signal for the power submodule of the next safety layer.

[0047] When other layers of power submodules are connected, the reset signal corresponding to the previous layer is only used as a judgment condition for starting the next layer conversion, and no additional control of the multi-core processor is performed.

[0048] In the preferred scheme, when the security layer power submodule is connected and the real-time domain reset circuit is reset, that is, the reset signal of the real-time domain reset circuit is high, the security domain IO power supply works to convert the 5V power supply to output 3.3V power supply; then the security domain simulates the power supply and outputs 1.8V power supply; then the internal logic power supply of the security domain works and outputs 0.8V power supply; then the security domain reset circuit is connected to give a reset signal, which is used to output the reset signal and control the power-on operation of the multi-core processor.

[0049] like Figure 6 As shown, it is the security domain IO power supply. When the real-time domain reset signal RTC_RESET is a high-level signal, the 5V power supply is converted into a 3.3V power supply to power on the security domain IO power supply.

[0050] like Figure 7 As shown, the analog power supply for the security domain is used to convert the 3.3V power supply into a 1.8V power supply and power on the analog power supply for the security domain.

[0051] like Figure 8 As shown, the internal logic power supply of the security domain: the 1.8V power supply is converted into a 0.8V power supply to power the internal logic power supply of the real-time domain.

[0052] like Fig. 9 As shown, the safety domain reset circuit is as follows: when the internal logic power supply of the safety domain is powered on, the safety domain reset signal SAFETY_RESET is changed from a low level to a high level reset signal.

[0053] If the safety layer is used alone, when RTC_RESET is high, it can be connected to and control the power-on operation of the multi-core processor.

[0054] If not, it serves as the start signal for the power submodule of the next application layer.

[0055] In the preferred scheme, when the application domain power submodule is connected and the security domain reset circuit gives a reset signal, that is, the reset signal of the security domain reset circuit is at a high level, the application domain IO power supply works to convert and outputs a second voltage; then the application domain analog power supply outputs a third voltage; then the application domain internal logic power supply works to output a fourth voltage; then the application domain reset circuit is connected to give a reset signal, which is used to output a reset signal and control the power-on operation of the multi-core processor.

[0056] like Fig.10 As shown, the application domain IO power supply: when the safety domain reset signal SAFETY_RESET is a high-level signal, the 5V power supply is converted into a 3.3V power supply to power on the application domain IO power supply.

[0057] like Fig.11As shown, the application domain analog power supply is used: the 3.3V power supply is converted into a 1.8V power supply, and the application domain analog power supply is powered on.

[0058] like Fig.12 As shown, it is the internal logic power supply of the application domain: the 1.8V power supply is converted into a 0.8V power supply to power on the internal logic power supply of the application domain.

[0059] Complete multi-level power conversion of the application layer power submodule.

[0060] like Fig.13 As shown, the application domain reset circuit is as follows: when the internal logic power supply of the application domain is powered on, the application domain reset signal AP_RESET is changed from a low level to a high level reset signal to control the power-on operation of the multi-core processor.

[0061] When AP_RESET is at a high level, it can be connected to and control the power-on operation of the multi-core processor.

[0062] In this embodiment, the coordinated working sequence of each power domain related to the multi-core processor is completed by the hardware power circuit, and the multi-core processor does not need to be program configured.

[0063] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A control circuit for coordinated startup of a multi-core processor power supply in an automobile, comprising a power supply module for converting a vehicle-mounted access power supply into a first voltage, characterized in that: Also includes: The power supply module is respectively connected to multiple layers of application power supply sub-modules, each layer of application power supply sub-module is provided with multiple levels of power supply conversion units in order from high to low according to the voltage value, and the application power supply sub-module is used to control the power-on of the multi-core processor; Multi-layer application power sub-modules are used in combination: according to the preset reset signal of the power sub-module of the previous layer, the adjacent power sub-module of the next layer starts the corresponding multi-level power conversion unit in turn to perform power conversion, and controls the power work of each layer. When the power conversion of the power sub-module of the last layer is completed, the power module is connected according to the corresponding preset reset signal, thereby controlling the power-on work of the multi-core processor.

2. The control circuit for coordinated startup of automotive multi-core processor power supplies according to claim 1, characterized in that: The multi-layer application power submodule includes power submodules of the real-time layer, security layer, and application layer, corresponding to different application scenarios; The multi-stage power conversion unit of the real-time layer includes a real-time domain IO power supply connected to the power module, and the real-time domain IO power supply is sequentially connected to the time domain internal logic power supply and the real-time domain reset circuit; The multi-level power conversion unit of the security layer includes a security domain IO power supply connected to the power module, and the security domain IO power supply is sequentially connected to the security domain analog power supply, the security internal logic power supply and the security domain reset circuit; The multi-level power conversion unit of the application layer includes an application domain IO power supply connected to the power module, and the application domain IO power supply is sequentially connected to the application domain analog power supply, the application internal logic power supply and the application domain reset circuit.

Images