Voltage control circuit and control mainboard

Abstract

The invention relates to a voltage control circuit and a control mainboard. The voltage control circuit comprises a first voltage conversion circuit and a voltage stabilizer module. The first voltage conversion circuit is provided with at least two power supply interfaces, and different power supply interfaces are respectively connected with different power supplies; the first voltage conversion circuit is configured to: convert a power supply voltage to a target voltage; the voltage stabilizer module is connected with the first voltage conversion module; the regulator module is configured to: convert the target voltage to an operating voltage; wherein the at least two power interfaces are configured to select a target power supply to supply power to the first voltage conversion circuit in response to a power supply demand. The control mainboard can adapt to environment requirements of different power supplies, standby switching of the different power supplies is supported, and the applicability and stability of the control mainboard are improved.

Description

Technical Field

[0001] The present application relates to the field of circuit control, and in particular to a voltage control circuit and a control mainboard. Background Art

[0002] The industrial control mainboard (MainBoard) is a multilayer printed circuit board (PCB) composed of large-scale integrated circuits. It is the core device in the industrial control machine and provides interfaces and jacks for the central processing unit (CPU), memory, graphics card, hard disk and external devices. The industrial control mainboard has high stability, reliability and durability, can adapt to different working conditions in industrial environments, can adapt to wide temperature environments and relatively harsh working environments, and can work under high load for a long time; in addition, the industrial control mainboard also has a wealth of expansion interfaces, which can easily connect various industrial equipment and sensors to meet different industrial control needs.

[0003] However, due to the diverse application environments of the industrial control mainboard in the related art, the power supply connected to the industrial control mainboard may be inconsistent in actual applications. Therefore, in order to ensure the working stability of the industrial control mainboard, it is necessary to improve the applicability of the industrial control mainboard to different power supplies. Summary of the invention

[0004] Based on this, the embodiments of the present application provide a voltage control circuit and a control mainboard, which can enable the control mainboard to adapt to the environmental requirements of different power supplies and support backup switching of different power supplies, thereby improving the applicability and stability of the control mainboard.

[0005] In order to achieve the above-mentioned purpose, on the one hand, some embodiments of the present application provide a voltage control circuit. The voltage control circuit includes a first voltage conversion circuit and a voltage regulator module; the first voltage conversion circuit has at least two power supply interfaces, and different power supply interfaces are respectively connected to different power supplies; the first voltage conversion circuit is configured to: convert the power supply voltage to a target voltage; the voltage regulator module is connected to the first voltage conversion module; the voltage regulator module is configured to: convert the target voltage to an operating voltage; wherein at least two of the power supply interfaces are configured to: in response to power supply requirements, select a target power supply to power the first voltage conversion circuit.

[0006] In some embodiments, the first voltage conversion circuit has a first power interface and a second power interface; the first power interface is connected to a first power supply, and the second power interface is connected to a second power supply; the first power supply and the second power supply are configured to: switch with each other in response to power supply requirements to power the first voltage conversion circuit.

[0007] In some embodiments, the first voltage conversion circuit includes a first filtering and stabilizing circuit and a buck-boost circuit; the first filtering and stabilizing circuit is connected to the first power supply interface; the first filtering and stabilizing circuit is configured to: convert the power supply voltage into an input voltage; the input voltage is a stable DC voltage; the buck-boost circuit is connected to the regulator module, the first filtering and stabilizing circuit and the second power supply interface; the buck-boost circuit is configured to: convert the input voltage into a target voltage.

[0008] In some embodiments, the voltage regulator module includes a feedback circuit; the feedback circuit is configured to: when the target voltage is greater than the operating voltage, enable the voltage regulator module to perform a step-down function to step down the target voltage and convert it into the operating voltage; when the target voltage is less than the operating voltage, enable the voltage regulator module to perform a step-up function to step up the target voltage and convert it into the operating voltage.

[0009] In some embodiments, the voltage regulator module has an output end; the voltage control circuit also includes a second filtering and stabilizing circuit; the second filtering and stabilizing circuit is connected to the output end of the voltage regulator module; the second filtering and stabilizing circuit is configured to: convert the working voltage into an output voltage; the output voltage is a stable DC voltage.

[0010] In some embodiments, the voltage control circuit also includes a second voltage conversion circuit; the second voltage conversion circuit is connected to the first voltage conversion circuit, the voltage regulator module and the second filtering and stabilizing circuit; the second voltage conversion circuit has a third power supply interface.

[0011] In some embodiments, the first power supply and / or the second power supply both include wide voltage power supplies.

[0012] In some embodiments, a power supply voltage provided by the first power supply and / or the second power supply has a value range of 9V to 72V.

[0013] In some embodiments, the target voltage is less than 36V.

[0014] On the other hand, the present application also provides a control mainboard according to some embodiments; the control mainboard is integrated with a voltage control circuit as described in any one of the previous aspects of the present application.

[0015] The embodiments of the present application may or at least have the following advantages:

[0016] In the embodiment of the present application, by connecting a first voltage conversion circuit having at least two power supply interfaces to a voltage regulator module, connecting different power supplies through different power supply interfaces, selecting at least one power supply interface to power the first voltage conversion circuit, converting the power supply voltage of the power supply currently used for power supply to a target voltage as an input of the voltage regulator module through the first voltage conversion circuit, and converting the target voltage to an operating voltage output through the voltage regulator module. In this way, through the voltage conversion function of the first voltage conversion circuit and the voltage regulator module, the voltage control circuit can meet the needs of multiple power supply interfaces, and the voltage control circuit can be matched with different power supply voltages, and the operating voltage can be stably output when different power supplies are connected, so as to improve the applicability of the voltage control circuit to different supply power supplies. In addition, the embodiment of the present application can also select a target power supply for power supply according to the power supply demand through multiple power supply interfaces, and make other power supplies as backup power supplies; in this way, when the target power supply currently powered fails or is insufficiently powered, it can be switched to the backup power supply for power supply, thereby effectively improving the stability of the voltage control circuit.

[0017] The details of one or more embodiments of the present application are set forth in the following drawings and description. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A circuit schematic diagram of a voltage control circuit provided in some embodiments;

[0020] Figure 2 A circuit schematic diagram of another voltage control circuit provided in some embodiments.

[0021] Description of reference numerals:

[0022] 1-first voltage conversion circuit, 11-first filtering and voltage stabilizing circuit, 12-boost and buck circuit, I1-first power supply interface, I2-second power supply interface, 2-voltage regulator module, S1-first power supply, S2-second power supply, O-output end, 3-second voltage conversion circuit, 4-second filtering and voltage stabilizing circuit, I3-third power supply interface. DETAILED DESCRIPTION

[0023] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] It should be understood that when an element or layer is referred to as being "on," "adjacent to," or "connected to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. It should be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, doping types, and / or portions, these elements, components, regions, layers, doping types, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, doping type, or portion from another element, component, region, layer, doping type, or portion. Therefore, without departing from the teachings of the present application, the first element, component, region, layer, doping type, or portion discussed below may be represented as a second element, component, region, layer, or portion.

[0026] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that when the terms "consisting of" and / or "comprising" are used in this specification, the presence of the features, integers, steps, operations, elements and / or parts can be determined, but the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups is not excluded. At the same time, when used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0027] Embodiments of the invention are described herein with reference to cross-sectional views that are schematic representations of idealized embodiments (and intermediate structures) of the present application, such that variations in the shapes shown due to, for example, manufacturing techniques and / or tolerances are anticipated. Embodiments of the present application should not be limited to the specific shapes of the regions shown herein, but include deviations in shapes due to, for example, manufacturing techniques. Therefore, the regions shown in the figures are schematic in nature, their shapes do not represent the actual shapes of the regions of the device, and do not limit the scope of the present application.

[0028] The industrial control mainboard (MainBoard) is a multilayer printed circuit board (PCB) composed of large-scale integrated circuits. It is the core device in the industrial control machine and provides interfaces and jacks for the central processing unit (CPU), memory, graphics card, hard disk and external devices. The industrial control mainboard has high stability, reliability and durability, can adapt to different working conditions in industrial environments, can adapt to wide temperature environments and relatively harsh working environments, and can work under high load for a long time; in addition, the industrial control mainboard also has a wealth of expansion interfaces, which can easily connect various industrial equipment and sensors to meet different industrial control needs.

[0029] However, due to the diverse application environments of the industrial control mainboard in the related art, the power supply connected to the industrial control mainboard may be inconsistent in actual applications. Therefore, in order to ensure the working stability of the industrial control mainboard, it is necessary to improve the applicability of the industrial control mainboard to different power supplies.

[0030] Based on this, the embodiments of the present application provide a voltage control circuit and a control mainboard, which can enable the control mainboard to adapt to the environmental requirements of different power supplies and support backup switching of different power supplies, thereby improving the applicability and stability of the control mainboard.

[0031] In some embodiments, see Figure 1 The voltage control circuit includes a first voltage conversion circuit 1 and a voltage regulator module 2; the first voltage conversion circuit 1 has at least two power supply interfaces, and different power supply interfaces are respectively connected to different power supplies; the first voltage conversion circuit 1 is configured to: convert the power supply voltage into a target voltage; the voltage regulator module 2 is connected to the first voltage conversion module; the voltage regulator module 2 is configured to: convert the target voltage into an operating voltage; wherein at least two power supply interfaces are configured to: in response to power supply requirements, select a target power supply to power the first voltage conversion circuit 1.

[0032] By way of example, the target power source may be at least one of different power sources to which different power interfaces are respectively connected.

[0033] For example, the voltage regulator module 2 includes but is not limited to a voltage regulator controller, etc.; the voltage regulator module 2 can be, for example, a linear voltage regulator controller or a switching voltage regulator controller, etc.; taking the voltage regulator module 2 as a switching voltage regulator controller as an example, the voltage regulator module 2 can be, for example, a step-down converter, a step-up converter or a buck-boost converter.

[0034] In some examples, the first voltage conversion circuit 1 and the regulator module 2 are both grounded.

[0035] By way of example, the types of power supply interfaces include, but are not limited to, transistor-transistor logic (TTL) level interface, complementary metal oxide semiconductor (CMOS) level interface, emitter coupled logic (ECL) level interface, RS-232 level interface, differential balanced level interface, optical isolation interface or coil coupling interface, etc.

[0036] For example, different power interfaces may be connected to the same or different power types, and this application does not impose any limitation on this.

[0037] By way of example, the type of power supply includes, but is not limited to, a wide voltage power supply.

[0038] For example, the power supply voltage ranges from 9V to 72V; the power supply voltage may be, for example, 9V, 12V, 16V, 18V, 24V, 32V, 36V, 48V, 64V or 72V.

[0039] In the embodiment of the present application, by connecting the first voltage conversion circuit 1 having at least two power supply interfaces to the voltage regulator module 2, different power supplies are connected through different power supply interfaces, so as to select at least one power supply interface to power the first voltage conversion circuit 1, and the power supply voltage of the power supply currently used for power supply is converted into the target voltage as the input of the voltage regulator module 2 through the first voltage conversion circuit 1, and the target voltage is converted into the working voltage output through the voltage regulator module 2. In this way, through the voltage conversion function of the first voltage conversion circuit 1 and the voltage regulator module 2, the voltage control circuit can meet the needs of multiple power supply interfaces, and the voltage control circuit can be matched with different power supply voltages, and the working voltage can be stably output when different power supplies are connected, so as to improve the applicability of the voltage control circuit to different power supplies. In addition, the embodiment of the present application can also select the target power supply for power supply according to the power supply demand through multiple power supply interfaces, and make other power supplies as backup power supplies; in this way, when the target power supply currently powered fails or is insufficiently powered, it can be switched to the backup power supply for power supply, thereby effectively improving the stability of the voltage control circuit.

[0040] In some embodiments, the target voltage is less than 36V.

[0041] For example, the target voltage may be 4V, 8V, 12V, 18V, 24V or 32V, etc.

[0042] In some examples, the target voltage is a steady direct current (DC) voltage.

[0043] It should be noted that the power supply voltage provided by the power supply may be unstable. The first voltage conversion circuit 1 in the embodiment of the present application can convert the unstable power supply voltage into a stable target voltage.

[0044] By way of example, the operating voltage may be 12V, for example.

[0045] In some examples, the operating voltage is a stable direct current (DC) voltage.

[0046] In the embodiment of the present application, through the voltage conversion function of the first voltage conversion circuit 1 and the voltage regulator module 2, a 12V working voltage can be stably output when connected to different power supplies, so that the voltage control circuit can be adapted to different power supply voltages, thereby improving the applicability and working stability of the voltage control circuit for different power supplies.

[0047] In some embodiments, please refer to Figure 1 The first voltage conversion circuit 1 has a first power interface I1 and a second power interface I2; the first power interface I1 is connected to the first power supply S1, and the second power interface I2 is connected to the second power supply S2; the first power supply S1 and the second power supply S2 are configured to: switch with each other in response to power supply requirements to power the first voltage conversion circuit 1.

[0048] By way of example, the types of the first power interface I1 and / or the second power interface I2 include, but are not limited to, a transistor-transistor logic (TTL) level interface, a complementary metal oxide semiconductor (CMOS) level interface, an emitter coupled logic (ECL) level interface, an RS-232 level interface, a differential balanced level interface, an optical isolation interface, or a coil coupling interface, etc.

[0049] It should be noted that the first power interface I1 and the second power interface I2 can be of the same type or of different types, and this application does not impose any limitation on this.

[0050] For example, the first power interface I1 is electrically connected to the first power source S1 , and the second power interface I2 is electrically connected to the second power source S2 .

[0051] In some examples, the first power source S1 includes, but is not limited to, a wide voltage power source.

[0052] In some examples, the second power source S2 includes, but is not limited to, a wide voltage power source.

[0053] In some examples, the first power supply S1 and the provided first power supply S1 voltage range from 9V to 72V; the first power supply S1 voltage value can be, for example, 9V, 12V, 16V, 18V, 24V, 32V, 36V, 48V, 64V or 72V.

[0054] In some examples, the second power supply S2 and the provided second power supply S2 voltage range from 9V to 72V; the second power supply S2 voltage value can be, for example, 9V, 12V, 16V, 18V, 24V, 32V, 36V, 48V, 64V or 72V.

[0055] It should be noted that the voltage of the first power supply S1 and the voltage of the second power supply S2 may be the same or different, and the present application does not impose any limitation on this.

[0056] It should be noted that the voltage control circuit provided in the embodiment of the present application may also include more than two power supply interfaces, and more than two different power supplies may be connected through each power supply interface, and the present application does not impose any restrictions on this.

[0057] For example, take the case where there are two power supplies; one of the first power supply S1 and the second power supply S2 is used to power the first voltage conversion circuit 1, and the other is used as a backup power supply; when the current first power supply S1 fails or is insufficiently powered, the voltage control circuit provided in the embodiment of the present application will automatically switch to the second power supply S2 to continue powering, thereby effectively improving the stability of the voltage control circuit.

[0058] In some embodiments, please refer to Figure 1 The first voltage conversion circuit 1 includes a first filtering and stabilizing circuit 11 and a buck-boost circuit 12; the first filtering and stabilizing circuit 11 is connected to the first power interface I1; the first filtering and stabilizing circuit 11 is configured to: convert the power supply voltage into an input voltage; the input voltage is a stable DC voltage; the buck-boost circuit 12 is connected to the regulator module 2, the first filtering and stabilizing circuit 11 and the second power interface I2; the buck-boost circuit 12 is configured to: convert the input voltage into a target voltage.

[0059] By way of example, the buck-boost circuit 12 includes, but is not limited to, a boost converter, a buck converter, and / or a buck-boost converter.

[0060] In some embodiments, the voltage regulator module 2 includes a feedback circuit. The feedback circuit is configured to: when the target voltage is greater than the working voltage, the voltage regulator module 2 performs a step-down function to step down the target voltage and convert it into the working voltage; when the target voltage is less than the working voltage, the voltage regulator module 2 performs a step-up function to step up the target voltage and convert it into the working voltage.

[0061] In some embodiments, see Figure 2 The voltage stabilizer module 2 has an output terminal O; the voltage control circuit also includes a second filtering and stabilizing circuit 4; the second filtering and stabilizing circuit 4 is connected to the output terminal O of the voltage stabilizer module 2; the second filtering and stabilizing circuit 4 is configured to: convert the working voltage into an output voltage; the output voltage is a stable DC voltage.

[0062] For example, the output voltage may be a stable 12V DC voltage.

[0063] It should be noted that the embodiment of the present application converts the target voltage into a stable output voltage through the second filtering and stabilizing circuit 4, which is beneficial to improving the working stability of the voltage control circuit.

[0064] In some embodiments, please refer to Figure 2 The voltage control circuit also includes a second voltage conversion circuit 3; the second voltage conversion circuit 3 is connected to the first voltage conversion circuit 1, the voltage regulator module 2 and the second filtering and stabilizing circuit 4; the second voltage conversion circuit 3 has a third power supply interface I3.

[0065] For some examples, see Figure 2 The second voltage conversion circuit 3 is connected to the buck-boost circuit 12 in the first voltage conversion circuit 1 .

[0066] For some examples, see Figure 2 The second voltage conversion circuit 3 is also connected to the output terminal O of the voltage regulator module 2.

[0067] By way of example, the second voltage conversion circuit 3 can implement the same voltage conversion function as the first voltage conversion circuit 1 .

[0068] It should be noted that the second voltage conversion circuit 3 can be used as a backup voltage conversion circuit; for example, the second voltage conversion circuit 3 can be used to connect to the first power supply S1 and / or the second power supply S2 when the first voltage conversion circuit 1 fails, so as to achieve the same voltage conversion function as the first voltage conversion circuit 1; the second voltage conversion circuit 3 can also be connected to the third power supply through the third power supply interface I3, so as to achieve the third power supply to the voltage regulator module 2. In this way, the embodiment of the present application further improves the working stability of the voltage control circuit by setting the second voltage conversion circuit 3.

[0069] The present application also provides a control mainboard according to some embodiments, and the control mainboard includes the voltage control circuit in some of the above embodiments. The control mainboard also has the technical advantages of the above voltage control circuit. It should be noted that the parts that are the same or corresponding to the above embodiments can refer to the corresponding description of the above embodiments, and will not be described in detail below.

[0070] In some embodiments, a voltage control circuit as described in any one of the previous aspects of the present application is integrated on the control main board.

[0071] By way of example, the control mainboard includes but is not limited to an industrial control mainboard (MainBoard).

[0072] In the embodiment of the present application, the voltage conversion function of the voltage control circuit can make the control mainboard meet the requirements of multiple power supply interfaces, and can make the control mainboard match different power supply voltages, and can stably output the working voltage when connected to different power supplies, so as to improve the applicability of the control mainboard to different power supplies. In addition, the control mainboard provided in the embodiment of the present application also supports multi-network card design and can provide multiple Ethernet interfaces (for example, it can be a 2.5G high-speed Ethernet interface).

[0073] In addition, the embodiment of the present application can also select a target power supply to power the control mainboard according to the power supply requirements through the multiple power supply interfaces of the voltage control circuit, and use other power supplies as backup power supplies; in this way, when the current target power supply fails or the power supply is insufficient, it can switch to the backup power supply, thereby effectively improving the working stability of the control mainboard.

[0074] In the description of this specification, the description with reference to the terms "some embodiments", "some examples", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0075] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A voltage control circuit, characterized in that: include: The first voltage conversion circuit has at least two power supply interfaces, and different power supply interfaces are respectively connected to different power supplies; the first voltage conversion circuit is configured to: convert the power supply voltage into a target voltage; A voltage regulator module, connected to the first voltage conversion module, configured to: convert the target voltage into an operating voltage; Wherein, at least two of the power supply interfaces are configured to: in response to power supply requirements, select a target power supply to power the first voltage conversion circuit.

2. The voltage control circuit according to claim 1, characterized in that: The first voltage conversion circuit has a first power interface and a second power interface; the first power interface is connected to a first power supply, and the second power interface is connected to a second power supply; the first power supply and the second power supply are configured to: switch with each other in response to power supply requirements to power the first voltage conversion circuit.

3. The voltage control circuit according to claim 2, characterized in that: The first voltage conversion circuit comprises: A first filtering and voltage stabilizing circuit is connected to the first power interface; the first filtering and voltage stabilizing circuit is configured to: convert the power supply voltage into an input voltage; the input voltage is a stable DC voltage; A buck-boost circuit is connected to the voltage regulator module, the first filtering voltage stabilization circuit and the second power supply interface; the buck-boost circuit is configured to convert the input voltage into a target voltage.

4. The voltage control circuit according to claim 1, characterized in that: The voltage regulator module comprises: The feedback circuit is configured to: when the target voltage is greater than the operating voltage, enable the voltage regulator module to perform a step-down function to step down the target voltage and convert it into the operating voltage; when the target voltage is less than the operating voltage, enable the voltage regulator module to perform a step-up function to step up the target voltage and convert it into the operating voltage.

5. The voltage control circuit according to claim 1, characterized in that: The voltage regulator module has an output terminal; the voltage control circuit also includes: The second filtering and voltage stabilizing circuit is connected to the output end of the voltage stabilizer module and is configured to: convert the working voltage into an output voltage; the output voltage is a stable DC voltage.

6. The voltage control circuit according to claim 5, characterized in that: Also includes: The second voltage conversion circuit is connected to the first voltage conversion circuit, the voltage regulator module and the second filtering and voltage stabilizing circuit, and has a third power supply interface.

7. The voltage control circuit according to claim 2, characterized in that: The first power supply and / or the second power supply both include wide voltage power supplies.

8. The voltage control circuit according to claim 7, characterized in that: The power supply voltage provided by the first power supply and / or the second power supply has a value range of 9V to 72V.

9. The voltage control circuit according to claim 1, characterized in that: The target voltage is less than 36V.

10. A control mainboard, characterized in that: The control main board is integrated with a voltage control circuit as described in any one of claims 1 to 9.

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