Grounding topological structure, integrated circuit system and electronic equipment

Abstract

The utility model provides a grounding topological structure, an integrated circuit system and electronic equipment, and relates to the field of electrical technology. The first functional circuit and the grounding terminal are connected without winding along the second functional circuit, and the first functional circuit and the grounding terminal are electrically connected only through the bridging electrode crossing the functional circuit, so that the purpose of flexible grounding of the first functional circuit is achieved, the grounding wire harness of the first functional circuit is shortened, and the grounding efficiency of the first functional circuit is improved. The problem of signal crosstalk between the first functional circuit and more lines due to the fact that the grounding wire harness of the first functional circuit is long is solved, and the performance of the electronic equipment is improved.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, and more specifically, to a grounding topology structure, an integrated circuit system and an electronic device. Background Art

[0002] Grounding refers to a safety measure in an electrical system or an electronic device. By establishing a low-impedance path between the metal shell of an electrical appliance, a certain point of a circuit or a certain part of a system and the ground (the earth), it ensures that charges can be quickly released during normal operation or in case of a fault, avoiding potential differences caused by electric leakage, static electricity accumulation or other reasons, so as to ensure personal safety and stable operation of the device. The circuits in existing electronic devices cannot achieve a flexible grounding design, resulting in problems such as signal crosstalk. Summary of the Utility Model

[0003] In view of this, the utility model provides a grounding topology structure, an integrated circuit system and an electronic device, effectively solving the technical problems existing in the prior art. By means of a bridging electrode, the flexible grounding of the first functional circuit is achieved, the problem of signal crosstalk with more circuits caused by the long ground wire harness of the first functional circuit is improved, and the performance of the electronic device is improved.

[0004] To achieve the above object, the technical solution provided by the utility model is as follows:

[0005] A grounding topology structure includes:

[0006] A grounding terminal;

[0007] A first functional circuit, which is located on one side of the grounding terminal;

[0008] A second functional circuit, at least part of the functional circuits of which are located between the grounding terminal and the first functional circuit;

[0009] And a bridging electrode, which spans the functional circuit, and the first end of the bridging electrode is electrically connected to the grounding port of the first functional circuit, and the second end of the bridging electrode is electrically connected to the grounding terminal.

[0010] Optionally, the grounding topology structure further includes: a filter circuit electrically connected between the grounding port of the first functional circuit and the first end of the bridging electrode; or a filter circuit electrically connected between the second end of the bridging electrode and the grounding terminal.

[0011] Optionally, the first functional circuit includes a plurality of sub-circuits, and the grounding ports of the plurality of sub-circuits are electrically connected as the grounding port of the first functional circuit;

[0012] The first end of the bridging electrode is electrically connected to the ground port of the first functional circuit, and the second end of the bridging electrode is electrically connected to the ground terminal.

[0013] Optionally, the first functional circuit includes a plurality of sub-circuits, and the bridging electrode includes a plurality of sub-bridging electrodes, and any one of the sub-bridging electrodes straddles the functional line;

[0014] The ground port of one of the sub-circuits is electrically connected to the first end of one of the sub-bridging electrodes, and the second end of the sub-bridging electrode is electrically connected to the ground terminal.

[0015] Optionally, the first functional circuit includes a plurality of sub-circuits, the bridging electrode includes a plurality of sub-bridging electrodes, and the ground terminal includes a plurality of sub-ground terminals, and any one of the sub-bridging electrodes straddles the functional line;

[0016] The ground port of one of the sub-circuits is electrically connected to the first end of one of the sub-bridging electrodes, and the second end of the sub-bridging electrode is electrically connected to one of the sub-ground terminals.

[0017] Optionally, the first functional circuit includes a plurality of sub-circuits, and the ground terminal includes a plurality of sub-ground terminals, and the ground ports of the plurality of sub-circuits are electrically connected to form the ground port of the first functional circuit; the first end of the bridging electrode is electrically connected to the ground port of the first functional circuit, and the second end of the bridging electrode is electrically connected to one of the sub-ground terminals;

[0018] In addition, the ground topology further includes: at least one auxiliary bridging electrode and at least one auxiliary filtering device, and any one of the auxiliary bridging electrodes straddles the functional line; the first end of one of the auxiliary bridging electrodes is electrically connected to the ground port of a sub-circuit, the second end of one of the auxiliary bridging electrodes is electrically connected to the first end of one of the auxiliary filtering devices, and the second end of one of the auxiliary filtering devices is electrically connected to one of the sub-ground terminals.

[0019] Optionally, the first functional circuit includes a plurality of sub-circuits, and the ground terminal includes a plurality of sub-ground terminals, and the ground ports of the plurality of sub-circuits are electrically connected to form the ground port of the first functional circuit; the first end of the bridging electrode is electrically connected to the ground port of the first functional circuit, and the second end of the bridging electrode is electrically connected to one of the sub-ground terminals;

[0020] Moreover, the grounding topology further includes: at least one auxiliary bridging electrode and at least one auxiliary filtering device. Any one of the auxiliary bridging electrodes straddles the functional line; a first end of one of the auxiliary filtering devices is electrically connected to a grounding port of one of the sub-circuits, a second end of one of the auxiliary filtering devices is electrically connected to a first end of one of the auxiliary bridging electrodes, and a second end of one of the auxiliary bridging electrodes is electrically connected to one of the sub-grounding terminals.

[0021] Optionally, the first functional circuit includes a plurality of sub-circuits, the bridging electrode includes a plurality of sub-bridging electrodes, and the grounding terminal includes a plurality of sub-grounding terminals. Any one of the sub-bridging electrodes straddles the functional line;

[0022] A grounding port of one of the sub-circuits is electrically connected to a first end of one of the sub-bridging electrodes, and a second end of the sub-bridging electrode is electrically connected to one of the sub-grounding terminals, wherein the sub-grounding terminal is electrically isolated from the ground.

[0023] Optionally, the bridging electrode includes a first connection portion, a bridging portion, and a second connection portion that are connected in sequence. The first connection portion is electrically connected to the grounding port of the first functional circuit, the bridging portion straddles the functional line, and the second connection portion is electrically connected to the grounding terminal;

[0024] The first connection portion and the second connection portion are plug-in portions or patch portions.

[0025] Based on the same inventive concept, the present utility model further provides an integrated circuit system, and the integrated circuit system includes the above-mentioned grounding topology.

[0026] Based on the same inventive concept, the present utility model further provides an electronic device, and the electronic device includes the above-mentioned integrated circuit system.

[0027] Compared with the prior art, the technical solution provided by the present utility model has at least the following advantages:

[0028] The present utility model provides a grounding topology, an integrated circuit system, and an electronic device, including: a grounding terminal; a first functional circuit, the first functional circuit being located on one side of the grounding terminal; a second functional circuit, at least part of the functional lines of the second functional circuit being located between the grounding terminal and the first functional circuit; and a bridging electrode, the bridging electrode straddling the functional line, and a first end of the bridging electrode being electrically connected to the grounding port of the first functional circuit, and a second end of the bridging electrode being electrically connected to the grounding terminal.

[0029] As can be seen from the above, the technical solution provided by the present utility model does not require wiring along the second functional circuit to connect the first functional circuit and the grounding terminal. Instead, the first functional circuit and the grounding terminal are electrically connected only through a bridging electrode that crosses the functional line. This not only achieves the purpose of flexible grounding of the first functional circuit, but also shortens the grounding wire harness of the first functional circuit, improves the problem of signal crosstalk with more lines caused by the long grounding wire harness of the first functional circuit, and improves the performance of the electronic device. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0031] Figure 1 Structural schematic diagram of a grounding topology structure provided by an embodiment of the present utility model;

[0032] Figure 2 Structural schematic diagram of another grounding topology structure provided by an embodiment of the present utility model;

[0033] Figure 3 Structural schematic diagram of yet another grounding topology structure provided by an embodiment of the present utility model;

[0034] Figure 4 Structural schematic diagram of yet another grounding topology structure provided by an embodiment of the present utility model;

[0035] Figure 5 Structural schematic diagram of yet another grounding topology structure provided by an embodiment of the present utility model;

[0036] Figure 6 Structural schematic diagram of yet another grounding topology structure provided by an embodiment of the present utility model;

[0037] Figure 7 Structural schematic diagram of yet another grounding topology structure provided by an embodiment of the present utility model;

[0038] Figure 8 Structural schematic diagram of yet another grounding topology structure provided by an embodiment of the present utility model;

[0039] Figure 9 Structural schematic diagram of a bridging electrode provided by an embodiment of the present utility model;

[0040] Figure 10Another structural schematic diagram of the bridging electrode provided by the embodiment of the present utility model;

[0041] Figure 11 A structural schematic diagram of an integrated circuit system provided by the embodiment of the present utility model;

[0042] Figure 12 Another structural schematic diagram of an integrated circuit system provided by the embodiment of the present utility model. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0044] As described in the background art, grounding refers to a safety measure in an electrical system or electronic device. It establishes a low-impedance path between the metal shell of an electrical appliance, a certain point in the circuit, or a part of the system and the ground (the earth), ensuring that charges can be quickly released during normal operation or in case of a fault, avoiding potential differences caused by leakage, static electricity accumulation, or other reasons, thereby protecting personal safety and the stable operation of the device. The circuits in existing electronic devices cannot achieve a flexible grounding design, resulting in problems such as signal crosstalk.

[0045] Specifically, grounding can achieve purposes such as safety protection, lightning protection, electromagnetic compatibility (EMC), and functional requirements. Safety protection means that when the internal insulation of an electronic device is damaged and the live part comes into contact with the accessible metal part, the current is directed to the ground through the grounding structure to prevent personnel from being electrocuted. Lightning protection is that a building or an electronic device is grounded through devices such as lightning rods and lightning protection belts to introduce lightning into the ground and protect the facilities from lightning damage. Electromagnetic compatibility means that in an electronic device, grounding can help eliminate interference signals, provide a reference zero potential, improve the electromagnetic compatibility performance of the electronic device, improve the ability of the electronic device to suppress electromagnetic interference and the anti-interference performance against changes in the external electromagnetic environment. Functional requirements mean that some electronic devices require a stable reference potential to ensure their high working performance, and grounding treatment is required for this. Therefore, the grounding technology is one of the research and development directions that need to be emphasized in an electrical system or electronic device.

[0046] Based on this, the embodiments of the present utility model provide a grounding topology structure, an integrated circuit system, and an electronic device, which effectively solve the technical problems existing in the prior art. The flexible grounding of the first functional circuit is achieved through the bridging electrode, the problem of signal crosstalk between the first functional circuit and more lines caused by the long ground wire harness of the first functional circuit is improved, and the performance of the electronic device is improved.

[0047] To achieve the above object, the technical solutions provided by the embodiments of the present utility model are as follows, and will be specifically described in combination with Figures 1 to 12 the technical solutions provided by the embodiments of the present utility model.

[0048] Referring to Figure 1 the figure shown, which is a schematic structural diagram of a grounding topology structure provided by an embodiment of the present utility model. Among them, the grounding topology structure includes:

[0049] a ground terminal GND; a first functional circuit 100, where the first functional circuit 100 is located on one side of the ground terminal GND; a second functional circuit 200, at least part of the functional lines of the second functional circuit 200 are located between the ground terminal GND and the first functional circuit 200; and a bridging electrode 300, the bridging electrode 300 straddles the functional lines and is insulated from the functional lines with a gap therebetween, and the first end of the bridging electrode 300 is electrically connected to the ground port of the first functional circuit 100, and the second end of the bridging electrode 300 is electrically connected to the ground terminal GND.

[0050] It can be understood that the grounding topology can be applied to an integrated circuit system. In addition to including a first functional circuit, a second functional circuit, and a grounding terminal, the integrated circuit system may also include some other functional circuits and interfaces, etc., and the present utility model does not make specific limitations thereto. The first functional circuit and the grounding terminal are isolated by a functional line. That is, at least part of the functional lines in the second functional circuit are arranged between the first functional circuit and the grounding terminal. When connecting the grounding port of the first functional circuit to the grounding terminal in the prior art, it is necessary to arrange a winding wire harness along the functional line until the winding wire harness bypasses the second functional circuit and then electrically connects the first functional circuit and the grounding terminal; due to the dense wiring degree of the integrated circuit system, etc., the winding wire harness will be coupled with more functional circuits in its winding path, resulting in signal crosstalk problems. Therefore, the technical solution provided by the embodiment of the present utility model does not need to wind along the second functional circuit to connect the first functional circuit and the grounding terminal, and only electrically connects the first functional circuit and the grounding terminal through a bridging electrode that crosses the functional line. In this way, the first functional circuit and the grounding terminal can be electrically connected through the bridging electrode (the present utility model can adopt the rule of connecting the grounding terminal nearby for the first functional circuit, and the bridging electrode is electrically connected to the nearby grounding terminal), which not only realizes the flexible grounding purpose of the first functional circuit, but also shortens the grounding wire harness of the first functional circuit, improves the signal crosstalk problem caused by the long grounding wire harness of the first functional circuit and more lines, and improves the performance of the electronic device.

[0051] The first functional circuit provided by the embodiment of the present utility model can be a low-frequency functional circuit, and the second functional circuit is a high-frequency functional circuit; or, the first functional circuit is a high-frequency functional circuit, and the first functional circuit can be a low-frequency functional circuit. And, the first functional circuit provided by the embodiment of the present utility model is a low-voltage functional circuit, and the second functional circuit is a high-voltage functional circuit; or, the first functional circuit is a high-voltage functional circuit, and the second functional circuit is a low-voltage functional circuit. Herein, low frequency, high frequency, low voltage, and high voltage are the operating conditions of the first functional circuit and the second functional circuit, and the operating conditions of the first functional circuit and the second functional circuit can be opposite.

[0052] EMC grounding is a crucial component in electromagnetic compatibility design. In the design of electronic devices, grounding technology directly affects the electromagnetic compatibility of the system (i.e., the ability of an electronic device to suppress electromagnetic interference and its immunity to changes in the external electromagnetic environment). The functions of EMC grounding include unifying the reference potential, controlling the current return path, electromagnetic shielding and radiation suppression, preventing malfunction, and protecting against electrostatic discharge. Unifying the reference potential provides a common and stable reference potential for each circuit in the system to minimize noise during signal transmission; controlling the current return path ensures that the signal return path is as short as possible and has a low impedance by reasonably arranging the grounding plane and ground wire network, reducing the occurrence of common-mode interference and differential-mode interference; electromagnetic shielding and radiation suppression enhance the effect of the metal shielding body due to a good substrate, quickly conducting the internally generated electromagnetic energy to the ground and reducing electromagnetic radiation to the external environment; preventing malfunction means that in high-precision or high-speed digital systems, voltage drops caused by poor grounding may lead to incorrect logical judgments, and good grounding can avoid this phenomenon and ensure the system operates stably in the electromagnetic environment; protecting against electrostatic discharge means that the grounding design can help the system effectively release static charges and prevent noise damage to sensitive components caused by electrostatic discharge.

[0053] To improve the EMC effect of the grounding topology, an RLC combined circuit can be electrically connected in the grounding topology provided by the embodiments of the present utility model. Specifically, referring to Figure 2 As shown, it is a schematic structural diagram of another grounding topology provided by the embodiments of the present utility model. Among them, the grounding topology further includes: a filtering circuit 410 electrically connected between the grounding port of the first functional circuit 100 and the first end of the bridging electrode 300. The bridging electrode 300 straddles the functional line 210 and is insulated from the functional line 210. The filtering circuit can be arranged between the grounding port of the first functional circuit 100 and the bridging electrode 300, or can also be arranged between the bridging electrode 300 and the grounding terminal GND to achieve a more flexible grounding impedance effect and more optimized control of the noise at the EMC interference source end, thereby achieving a good EMC effect inside the grounding topology. Among them, the filtering circuit 410 includes one filtering branch or multiple filtering branches, and the multiple filtering branches are connected in parallel. The filtering branch includes a filtering resistor R, a filtering capacitor C, or a filtering inductor L.

[0054] Or referring to Figure 3 As shown, it is a schematic structural diagram of yet another grounding topology provided by the embodiments of the present utility model. The filtering circuit 420 provided by the embodiments of the present utility model can also be electrically connected between the second end of the bridging electrode 300 and the grounding terminal. Among them, the filtering circuit 420 includes one filtering branch or multiple filtering branches, and the multiple filtering branches are connected in parallel. The filtering branch includes a filtering resistor R, a filtering capacitor C, or a filtering inductor L.

[0055] It is understandable that the bridging electrode matching has filtering devices with different impedances such as filtering capacitors, filtering resistors, and / or filtering inductors. Among them, the filtering capacitor can achieve a small grounding impedance within a specific frequency band range (different capacitance values correspond to different frequency band ranges); the filtering resistor can achieve a specific grounding impedance value (resistance value); the filtering inductor can achieve a low-impedance grounding in a specific frequency band (different inductance values correspond to different frequency band ranges) and a high-impedance grounding outside the specific frequency band. Through the combination of RLC, a more flexible grounding impedance effect can be achieved, and the noise at the EMC interference source end can be well controlled, so as to achieve a good EMC effect in each part within the grounding topology structure. Optionally, the filtering inductor provided in the embodiment of the present invention is a coil or a magnetic bead.

[0056] In the grounding topology structure, the grounding of the first functional circuit can be flexibly designed through the bridging electrode, and thus different grounding methods can be realized according to actual applications, such as single-point grounding, multi-point grounding, hybrid grounding, and floating grounding, etc., so as to adapt to different integrated circuits and improve the applicable range of the grounding topology structure. Refer to Figure 4 As shown, it is a schematic structural diagram of another grounding topology structure provided by the embodiment of the present invention. Among them, the first functional circuit 100 provided by the embodiment of the present invention includes a plurality of sub-circuits 110, and the grounding ports of the plurality of sub-circuits 110 are electrically connected to form the grounding port of the first functional circuit 100; the first end of the bridging electrode 300 is electrically connected to the grounding port of the first functional circuit 110, and the second end of the bridging electrode 300 is electrically connected to the grounding terminal GND. Thus, a grounding method of series single-point grounding is realized, which can be applied to low-frequency functional circuits, so that the grounding ports of all sub-circuits 110 are connected in series and then connected to the same grounding terminal GND, thereby ensuring that all parts in the system have a common reference potential. Adopting the single-point grounding method can simplify the circuit design and reduce the interference coupling caused by the ground loop.

[0057] Refer to Figure 5As shown in the figure, it is a schematic structural diagram of another grounding topology structure provided by an embodiment of the present invention. Among them, the first functional circuit 100 provided by the embodiment of the present invention includes a plurality of sub-circuits 110, and the bridging electrode 300 includes a plurality of sub-bridging electrodes 310. Any one of the sub-bridging electrodes 310 straddles the functional line 210; the grounding port of one sub-circuit 110 is electrically connected to the first end of one sub-bridging electrode 310, and the second end of the sub-bridging electrode 310 is electrically connected to the grounding terminal GND. Thus, a grounding method of parallel single-point grounding is realized, which can be applied to low-frequency functional circuits, so that the grounding ports of all sub-circuits 110 are connected in series and then connected to the same grounding terminal GND, thereby ensuring that all parts in the system have a common reference potential. Adopting the single-point grounding method can simplify the circuit design and reduce the interference coupling caused by the ground loop.

[0058] Reference Figure 6 As shown in the figure, it is a schematic structural diagram of another grounding topology structure provided by an embodiment of the present invention. Among them, the first functional circuit 100 provided by the embodiment of the present invention includes a plurality of sub-circuits 110, the bridging electrode 300 includes a plurality of sub-bridging electrodes 310, and the grounding terminal GND includes a plurality of sub-grounding terminals GND1. Any one of the sub-bridging electrodes 310 straddles the functional line 210; the grounding port of one sub-circuit 110 is electrically connected to the first end of one sub-bridging electrode 310, and the second end of the sub-bridging electrode 310 is electrically connected to one sub-grounding terminal GND1. Thus, a multi-point grounding method is realized, which can be applied to high-frequency functional circuits, so that the grounding of each sub-circuit is directly connected to its corresponding sub-grounding terminal, forming a plurality of independent grounding paths. Adopting the multi-point grounding method can effectively reduce the area of the grounding loop, reduce the influence of high-frequency noise on the signal, reduce the voltage drop caused by the ground wire impedance, and improve the signal integrity and electromagnetic compatibility. Optionally, the wiring distance between the sub-bridging electrode 310 and the sub-grounding terminal GND1 connected thereto is less than the wiring distance between the bridging electrode 310 and other sub-grounding terminals GND1, so as to achieve the purpose of nearby grounding, reduce the length of the grounding wire harness, and reduce the problem of signal crosstalk.

[0059] In an embodiment of the present utility model, the grounding topology structure provided by the embodiment of the present utility model can also implement a hybrid grounding method. For example, the first functional circuit provided by the embodiment of the present utility model includes a plurality of sub-circuits, and the grounding terminal includes a plurality of sub-grounding terminals. The grounding ports of the plurality of sub-circuits are electrically connected to form the grounding port of the first functional circuit; the first end of the bridging electrode is electrically connected to the grounding port of the first functional circuit, and the second end of the bridging electrode is electrically connected to one of the sub-grounding terminals; and, the grounding topology structure further includes: at least one auxiliary bridging electrode and at least one auxiliary filtering device, and any one of the auxiliary bridging electrodes straddles the functional line; the first end of one of the auxiliary bridging electrodes is electrically connected to the grounding port of one of the sub-circuits, the second end of one of the auxiliary bridging electrodes is electrically connected to the first end of one of the auxiliary filtering devices, and the second end of one of the auxiliary filtering devices is electrically connected to one of the sub-grounding terminals.

[0060] Alternatively, the first functional circuit provided by the embodiment of the present utility model includes a plurality of sub-circuits, and the grounding terminal includes a plurality of sub-grounding terminals. The grounding ports of the plurality of sub-circuits are electrically connected to form the grounding port of the first functional circuit; the first end of the bridging electrode is electrically connected to the grounding port of the first functional circuit, and the second end of the bridging electrode is electrically connected to one of the sub-grounding terminals; and, the grounding topology structure further includes: at least one auxiliary bridging electrode and at least one auxiliary filtering device, and any one of the auxiliary bridging electrodes straddles the functional line; the first end of one of the auxiliary filtering devices is electrically connected to the grounding port of one of the sub-circuits, the second end of one of the auxiliary filtering devices is electrically connected to the first end of one of the auxiliary bridging electrodes, and the second end of one of the auxiliary bridging electrodes is electrically connected to one of the sub-grounding terminals.

[0061] Optionally, the auxiliary filtering device provided by the embodiment of the present utility model can be a filtering capacitor or a filtering inductor. Specifically, in combination with Figure 7 and Figure 8 the capacitive hybrid grounding method and the inductive hybrid grounding method are described in detail. It should be noted that Figure 7 and Figure 8 and the relevant description in the specification are all described by taking the auxiliary filtering device being electrically connected between the auxiliary bridging electrode and the sub-grounding terminal as an example. Refer to Figure 7As shown in the figure, it is a schematic structural diagram of another grounding topology provided by an embodiment of the present invention. Among them, the first functional circuit 100 provided by the embodiment of the present invention includes a plurality of sub-circuits 110, and the grounding terminal GND includes a plurality of sub-grounding terminals GND1. The grounding ports of the plurality of sub-circuits 110 are electrically connected to form the grounding port of the first functional circuit 100; the first end of the bridging electrode 300 is electrically connected to the grounding port of the first functional circuit 100, and the second end of the bridging electrode 300 is electrically connected to one of the sub-grounding terminals GND1. In addition, the grounding topology further includes: at least one auxiliary bridging electrode 320 and at least one auxiliary filter capacitor Cr. Any one of the auxiliary bridging electrodes 320 straddles the functional line 210; the first end of one of the auxiliary bridging electrodes 320 is electrically connected to the grounding port of one of the sub-circuits 110, the second end of one of the auxiliary bridging electrodes 320 is electrically connected to the first end of one of the auxiliary filter capacitors Cr, and the second end of one of the auxiliary filter capacitors Cr is electrically connected to one of the sub-grounding terminals GND1. Alternatively, the auxiliary filter capacitor provided by the embodiment of the present invention can also be electrically connected between the auxiliary bridging electrode and the grounding port of the sub-circuit, that is, the first end of one of the auxiliary filter capacitors is electrically connected to the grounding port of one of the sub-circuits, the second end of one of the filter capacitors is electrically connected to the first end of one of the auxiliary bridging electrodes, and the second end of one of the auxiliary bridging electrodes is electrically connected to one of the sub-grounding terminals. The present invention does not make specific limitations on this and specific designs need to be carried out according to actual applications. Thus, a capacitive hybrid grounding method is realized. The hybrid grounding method combines the characteristics of single-point grounding and multi-point grounding, and different types of grounding methods are adopted according to the functions of different sub-circuits in the system, improving the flexibility of grounding.

[0062] Reference Figure 8As shown, it is a schematic structural diagram of another grounding topology provided by an embodiment of the present invention. Among them, the first functional circuit 100 provided by the embodiment of the present invention includes a plurality of sub-circuits 110, and the grounding terminal GND includes a plurality of sub-grounding terminals GND1. The grounding ports of the plurality of sub-circuits 110 are electrically connected to form the grounding port of the first functional circuit 100; the first end of the bridging electrode 300 is electrically connected to the grounding port of the first functional circuit 100, and the second end of the bridging electrode 300 is electrically connected to one of the sub-grounding terminals GND1. In addition, the grounding topology further includes: at least one auxiliary bridging electrode 320 and at least one auxiliary filter inductor Lr. Any one of the auxiliary bridging electrodes 320 straddles the functional line 210; the first end of one of the auxiliary bridging electrodes 320 is electrically connected to the grounding port of one of the sub-circuits 110, the second end of one of the auxiliary bridging electrodes 320 is electrically connected to the first end of one of the auxiliary filter inductors Lr, and the second end of one of the auxiliary filter inductors Lr is electrically connected to one of the sub-grounding terminals GND1. Alternatively, the auxiliary filter inductor provided by the embodiment of the present invention can also be electrically connected between the auxiliary bridging electrode and the grounding port of the sub-circuit, that is, the first end of one of the auxiliary filter inductors is electrically connected to the grounding port of one of the sub-circuits, the second end of one of the filter inductors is electrically connected to the first end of one of the auxiliary bridging electrodes, and the second end of one of the auxiliary bridging electrodes is electrically connected to one of the sub-grounding terminals. Thus, an inductive hybrid grounding method is realized. The hybrid grounding method combines the characteristics of single-point grounding and multi-point grounding, and different types of grounding methods are adopted according to the functions of different sub-circuits in the system, improving the flexibility of grounding.

[0063] In addition, the grounding topology provided by the embodiment of the present invention can also realize the floating ground method. That is, the first functional circuit provided by the embodiment of the present invention includes a plurality of sub-circuits, the bridging electrode includes a plurality of sub-bridging electrodes, and the grounding terminal includes a plurality of sub-grounding terminals. Any one of the sub-bridging electrodes straddles the functional line; the grounding port of one of the sub-circuits is electrically connected to the first end of one of the sub-bridging electrodes, and the second end of the sub-bridging electrode is electrically connected to one of the sub-grounding terminals, wherein the sub-grounding terminal is electrically isolated from the ground.

[0064] It can be understood that the grounding topology provided by the embodiment of the present invention can be applied to structures such as integrated circuit systems. When performing circuit layout design on an integrated circuit system, the grounding methods provided in any of the above embodiments can be adopted to flexibly design the grounding of the functional circuit and ensure good EMC effects of the integrated circuit system.

[0065] Reference Figure 9 and Figure 10As shown, these are schematic diagrams of two structures of the bridging electrodes provided by the embodiments of the present invention. Among them, the bridging electrodes provided by the embodiments of the present invention include a first connection part 301, a bridging part 303, and a second connection part 302 that are connected in sequence. The first connection part 301 is electrically connected to the ground port of the first functional circuit 100. The bridging part 303 straddles the functional line 210, and the second connection part 302 is electrically connected to the ground terminal GND. Among them, there are spacings between the first connection part 301, the bridging part 303, and the second connection part 302 and the functional circuit 210 for insulation. To facilitate the connection between the first connection part 301 and the ground port of the first functional circuit 100, and to facilitate the connection between the second connection part 302 and the ground terminal GND, the first connection part 301 and the second connection part 302 provided by the embodiments of the present invention are plug-in parts (such as Figure 9 the plug-in structure shown) or patch parts (such as Figure 10 the patch structure shown).

[0066] It should be noted that the sub-bridging electrodes and auxiliary bridging electrodes provided by the embodiments of the present invention can both be the above two schematic structures. Moreover, the specific schematic structures of the above two bridging electrodes are only two of all the structures applicable to the present invention, and the present invention does not make specific limitations on this. In addition, the bridging electrodes provided by the embodiments of the present invention can be bridging copper bars, and the present invention also does not make specific limitations on this. And, to avoid the situation of short-circuit contact between the bridging electrode and the functional line during the wiring process, an insulating film is wrapped outside the bridging electrode provided by the embodiments of the present invention (this insulating film does not wrap the connection ends of the bridging electrode with the first functional circuit and the ground terminal, and the bridging electrode, the first functional circuit, and the ground terminal can be connected by welding). This insulating film can be an insulating sleeve or an insulating paper bonded, etc., as an isolation structure.

[0067] Based on the same inventive concept, the embodiments of the present invention also provide an integrated circuit system, and the integrated circuit system includes the grounding topology structure provided by any one of the above embodiments. The integrated circuit system provided by the embodiments of the present invention can be integrally arranged in a circuit board. The circuit board can be a PCB (Printed Circuit Board, printed circuit board), etc., and the present invention does not make specific limitations on this.

[0068] When designing the grounding topology in an integrated circuit system, when the first functional circuit needs to be close to the ground, and the first functional circuit and the grounding terminal are separated by at least part of the functional lines of the second functional circuit, if a wire harness is designed in the integrated circuit system to connect the first functional circuit and the grounding terminal, it will increase the wiring layout of the integrated circuit system and cause problems such as signal crosstalk caused by the wire harness. When the integrated circuit system relies on a circuit board, it will also increase the wiring structure layer of the circuit board, not only increasing the cost of the circuit board, but also requiring a large clearance distance to be avoided, making the wiring design difficulty greatly increased. The utility model can realize the close connection between the first functional circuit and the grounding terminal through a bridging electrode. The bridging electrode can cross the functional lines of the second functional circuit above or below the circuit board, achieving the purpose of flexible grounding design, avoiding various problems brought by designing a wire harness, and reducing the cost of the circuit board.

[0069] Specifically, when applied to an electronic device, the high-voltage functional circuit and the low-voltage functional circuit of the integrated circuit system are designed in one place. For example, the first functional circuit is a low-voltage functional circuit, and the second functional circuit is a high-voltage functional circuit. At least part of the functional lines of the high-voltage functional circuit separate the grounding terminal from the low-voltage functional circuit, making it difficult for the low-voltage functional circuit to be grounded. The embodiment of the utility model uses a bridging electrode to cross the functional line to achieve the close grounding of the low-voltage functional circuit and the grounding terminal. Compared with the wiring method, the grounding path can be shortened by 10-50 times, greatly shortening the grounding interference loop and improving the performance of the integrated circuit system.

[0070] Based on the above flexible grounding method of bridging, when designing the wiring of the integrated circuit system, the circuits in the integrated circuit system can be decomposed into smaller grounding units, and then the grounding method of using bridging electrodes, combined with grounding types such as single-point grounding, multi-point grounding, hybrid grounding, and floating grounding, can form a more optimized grounding network. Moreover, the structure of the bridging electrodes in the integrated circuit system can be unified into the same structure, which is convenient for the unified connection of the bridging electrodes. Refer to Figure 11As shown in the figure, it is a schematic structural diagram of an integrated circuit system provided by an embodiment of the present invention. When the integrated circuit system is applied to in-vehicle electronic equipment, the integrated circuit system is an in-vehicle power supply. The integrated circuit system may include functional circuits such as AC filtering, low-voltage filtering, high-voltage DC filtering, PDU (Power Distribution Unit), MCU (Microcontroller Unit), ACM (Auxiliary Control Module), EPS (Electronic Power Steering), DCDC (DC-DC converter), and OBC (On-Board Charger), etc. In addition, an AC power supply AC, a high-voltage battery, and a low-voltage battery are externally connected to the integrated circuit system. This is the same as the in-vehicle power supply in existing in-vehicle electronic equipment, so no redundant description will be given. Among them, functional circuits such as AC filtering, low-voltage filtering, high-voltage DC filtering, PDU, MCU, ACM, EPS, DCDC, and OBC can all adopt the grounding topology structure provided by any one of the above embodiments in the grounding design to achieve the purpose of flexible grounding design.

[0071] Furthermore, the technical solution provided by the embodiment of the present invention can further classify the functional circuits such as AC filtering, low-voltage filtering, high-voltage DC filtering, PDU, MCU, ACM, EPS, DCDC, and OBC in more detail to optimize the grounding design of the more refined sub-circuits in the functional circuits. The grounding design of the sub-circuits also adopts the grounding topology structure provided by any one of the above embodiments to further improve the performance of the integrated circuit system. Refer to Figure 12 As shown in the figure, it is a schematic structural diagram of another integrated circuit system provided by an embodiment of the present invention. Taking the MCU as an example, the MCU includes a high-voltage filter board, a low-voltage filter board, a control board, and a drive board. The low-voltage filter board includes sub-circuits of low-voltage filter 1 and low-voltage filter 2. The high-voltage filter board includes sub-circuits of high-voltage DC filter 1 and high-voltage DC filter 2. The control board includes sub-circuits such as a high-voltage backup power supply, bus voltage sampling 1, flyback power supply circuit, current sampling circuit, resolver sampling circuit, and control board interface circuit. In addition, the drive board includes sub-circuits such as bus sampling 2, drive power supply circuit 1, drive power supply circuit 2, drive circuit 1, drive circuit 6, and drive board interface circuit. Among them, each sub-circuit of the MCU can adopt a bridging electrode (such as Figure 12A flexible grounding method is used to ground the schematic structure with the bridging electrode grounded beside each sub-circuit shown schematically, so as to implement a grounding network of single-point grounding, multi-point grounding, hybrid grounding or floating grounding according to actual applications, improving the performance of the MCU. In addition, the MCU is also connected to a low-voltage battery and a high-voltage battery, which is the same as the MCU in the existing vehicle power supply, so no redundant description will be made.

[0072] It can be understood that when the integrated circuit system provided by the embodiment of the present invention adopts the grounding topology structure provided by any one of the above embodiments, the functional circuits of the integrated circuit system can be decomposed into more sub-circuits that need to be grounded. Through the decomposition of sub-circuits at multiple levels, and then the grounding design of the sub-circuits using bridging electrodes, a multi-stage grounding network is formed, and finally the purpose of improving the performance of the integrated circuit system is achieved.

[0073] Based on the same inventive concept, the embodiment of the present invention also provides an electronic device, and the electronic device includes the integrated circuit system provided by any one of the above embodiments. Among them, the electronic device can be a vehicle-mounted electronic device, etc., and the present invention does not make specific limitations.

[0074] The embodiment of the present invention provides a grounding topology structure, an integrated circuit system and an electronic device, including: a grounding terminal; a first functional circuit, the first functional circuit is located on one side of the grounding terminal; a second functional circuit, at least part of the functional lines of the second functional circuit are located between the grounding terminal and the first functional circuit; and a bridging electrode, the bridging electrode straddles the functional line, and the first end of the bridging electrode is electrically connected to the grounding port of the first functional circuit, and the second end of the bridging electrode is electrically connected to the grounding terminal.

[0075] As can be seen from the above content, the technical solution provided by the embodiment of the present invention does not need to wind the wire along the second functional circuit to connect the first functional circuit and the grounding terminal. Only by electrically connecting the first functional circuit and the grounding terminal through the bridging electrode that straddles the functional line, not only the flexible grounding purpose of the first functional circuit is achieved, but also the ground wire harness of the first functional circuit is shortened, improving the signal crosstalk problem with more lines caused by the longer ground wire harness of the first functional circuit, and improving the performance of the electronic device.

[0076] In the description of the present utility model, it should be understood that when terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0077] In addition, when terms such as "first" and "second" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In the present utility model, unless otherwise clearly specified and defined, when terms such as "installation", "connection", "coupling", "fixation" appear, they should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0079] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0080] In the present utility model, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0081] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A grounding topology structure, characterized in that: include: Ground terminal; a first functional circuit, wherein the first functional circuit is located on one side of the ground terminal; a second functional circuit, wherein at least part of the functional circuit of the second functional circuit is located between the ground terminal and the first functional circuit; And, a jumper electrode, the jumper electrode jumps over the functional circuit, and a first end of the jumper electrode is electrically connected to the ground port of the first functional circuit, and a second end of the jumper electrode is electrically connected to the ground terminal.

2. The grounding topology structure according to claim 1, characterized in that: The grounding topology structure further includes: a filter circuit electrically connected between the ground port of the first functional circuit and the first end of the jumper electrode; or a filter circuit electrically connected between the second end of the jumper electrode and the ground terminal.

3. The grounding topology structure according to claim 1, characterized in that: The first functional circuit includes a plurality of sub-circuits, and the grounding ports of the plurality of sub-circuits are electrically connected to the grounding port of the first functional circuit; The first end of the jumper electrode is electrically connected to the ground port of the first functional circuit, and the second end of the jumper electrode is electrically connected to the ground terminal.

4. The grounding topology structure according to claim 1, characterized in that: The first functional circuit includes a plurality of sub-circuits, and the jumper electrode includes a plurality of sub-jugation electrodes, any one of the sub-jugation electrodes spans the functional circuit; The ground port of one of the sub-circuits is electrically connected to a first end of one of the sub-jumping electrodes, and the second end of the sub-jumping electrode is electrically connected to the ground terminal.

5. The grounding topology structure according to claim 1, characterized in that: The first functional circuit includes a plurality of sub-circuits, the jumper electrode includes a plurality of sub-jumper electrodes, and the ground terminal includes a plurality of sub-ground terminals, and any one of the sub-jumper electrodes crosses over the functional circuit; The ground port of one of the sub-circuits is electrically connected to a first end of one of the sub-jumping electrodes, and the second end of the sub-jumping electrode is electrically connected to one of the sub-grounding terminals.

6. The grounding topology structure according to claim 1, characterized in that: The first functional circuit includes a plurality of sub-circuits, and the grounding terminal includes a plurality of sub-grounding terminals, the grounding ports of the plurality of sub-circuits are electrically connected to the grounding port of the first functional circuit; the first end of the jumper electrode is electrically connected to the grounding port of the first functional circuit, and the second end of the jumper electrode is electrically connected to one of the sub-grounding terminals; And, the grounding topology structure further includes: at least one auxiliary jumper electrode and at least one auxiliary filter device, any one of the auxiliary jumper electrodes spans the functional line; A first end of the auxiliary jumper electrode is electrically connected to a ground port of a sub-circuit, a second end of the auxiliary jumper electrode is electrically connected to a first end of the auxiliary filter device, and a second end of the auxiliary filter device is electrically connected to a sub-ground terminal.

7. The grounding topology structure according to claim 1, characterized in that: The first functional circuit includes a plurality of sub-circuits, and the grounding terminal includes a plurality of sub-grounding terminals, the grounding ports of the plurality of sub-circuits are electrically connected to the grounding port of the first functional circuit; the first end of the jumper electrode is electrically connected to the grounding port of the first functional circuit, and the second end of the jumper electrode is electrically connected to one of the sub-grounding terminals; And, the grounding topology structure further includes: at least one auxiliary jumper electrode and at least one auxiliary filter device, any one of the auxiliary jumper electrodes spans the functional line; A first end of the auxiliary filter device is electrically connected to a ground port of the sub-circuit, a second end of the auxiliary filter device is electrically connected to a first end of the auxiliary jumper electrode, and a second end of the auxiliary jumper electrode is electrically connected to a sub-ground terminal.

8. The grounding topology structure according to claim 1, characterized in that: The first functional circuit includes a plurality of sub-circuits, the jumper electrode includes a plurality of sub-jumper electrodes, and the ground terminal includes a plurality of sub-ground terminals, and any one of the sub-jumper electrodes crosses over the functional circuit; The grounding port of one of the sub-circuits is electrically connected to a first end of one of the sub-jumping electrodes, and the second end of the sub-jumping electrode is electrically connected to one of the sub-grounding terminals, wherein the sub-grounding terminal is electrically isolated from the ground.

9. The grounding topology structure according to claim 1, characterized in that: The jumper electrode comprises a first connection portion, a jumper portion, and a second connection portion connected in sequence, the first connection portion is electrically connected to the ground port of the first functional circuit, the jumper portion spans the functional circuit, and the second connection portion is electrically connected to the ground terminal; The first connection part and the second connection part are plug-in parts or patch parts.

10. An integrated circuit system, characterized in that: The integrated circuit system comprises the grounding topology structure according to any one of claims 1-9.

11. An electronic device, characterized in that: The electronic device comprises the integrated circuit system according to claim 10.

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