A gallium nitride switch

Abstract

This utility model relates to the field of switch technology, and particularly to a gallium nitride (GaN) switch, comprising a protective shell and a power supply assembly. The protective shell has a mounting cavity within it, and a control motherboard is housed within the mounting cavity. The control motherboard is connected to one inner wall of the protective shell. The protective shell has a network interface facing the control motherboard, which passes through the protective shell. The power supply assembly passes through the mounting cavity and is connected to one side of the control motherboard. A mounting bracket is provided on the inner wall of the protective shell away from the control motherboard, and the power supply assembly is connected to the mounting bracket. This utility model aims to make the switch's operation more stable and facilitate its relocation.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a gallium nitride switch. Background Technology

[0002] A switch is a network device used for forwarding electrical signals. It can provide a dedicated electrical signal path for any two network nodes connected to the switch. It is a device that completes the information exchange function in a communication system. Data transmission and information sharing can be realized through switches and switch systems. With increasingly fierce competition in terms of size, weight, and performance of switches, the design challenges are also increasing.

[0003] In related technologies, switches are equipped with multiple connection interfaces. These interfaces are arrayed on one side of the switch housing, allowing multiple network nodes to form different independent electrical signal paths through the switch. In order for the control chip to work properly and maintain the stable operation of the electrical signal path, a power conversion module is provided on one side of the control chip. However, the power conversion module is generally large, making the switch too large and inconvenient to use. Furthermore, the power conversion module generates a lot of heat during operation, requiring a heat dissipation component for active cooling. Utility Model Content

[0004] The main objective of this invention is to provide a gallium nitride switch that makes the switch operation more stable and easier to relocate.

[0005] To achieve the above objectives, this utility model proposes a gallium nitride switch, comprising a protective shell and a power supply assembly:

[0006] The protective shell has a mounting cavity, and a control main board is housed within the mounting cavity. The control main board is connected to one inner wall of the protective shell. The protective shell has a network interface facing the control main board, and the network interface extends through the protective shell.

[0007] The power supply component passes through the mounting cavity and is connected to one side of the control motherboard. The inner wall of the protective shell is provided with a mounting bracket away from the control motherboard, and the power supply component is connected to the mounting bracket.

[0008] In one embodiment of this application, the power supply component includes a transformer circuit, a gallium nitride switch, a pulse modulation controller, and a DC filter circuit.

[0009] The transformer circuit includes a transformer, one end of the primary coil of which is connected to the DC output terminal;

[0010] The drain of the gallium nitride switch is connected to the other end of the primary coil of the transformer, and the source of the gallium nitride switch is connected to the reference ground.

[0011] The pulse output control terminal of the pulse modulation controller is connected to the gate of the gallium nitride switch.

[0012] The connection between the DC filter circuit and the secondary coil of the transformer enables the low-voltage DC output of the transformer to be filtered and stabilized.

[0013] In one embodiment of this application, the pulse modulation controller is configured with an optocoupler feedback circuit, which is connected to the regulated DC output terminal and the voltage feedback terminal of the pulse modulation controller, respectively.

[0014] In one embodiment of this application, the power supply component further includes an AC / DC conversion circuit connected to the transformer circuit for converting the input AC power into the DC power.

[0015] In one embodiment of this application, the protective shell is provided with a sealing cover away from the mounting cavity. The sealing cover is connected to the protective shell and wraps around the end face of the mesh interface away from the protective shell. The mounting bracket is connected to the side wall of the sealing cover, and the side wall of the sealing cover is provided with a plurality of heat dissipation grooves evenly spaced apart.

[0016] In one embodiment of this application, the network interface is provided in multiple sets, and the multiple sets of network interfaces are arrayed on the side wall of the protective shell and electrically connected to the control motherboard.

[0017] In one embodiment of this application, the mounting bracket has heat dissipation holes on its sidewall. The mounting bracket includes a first protective part and a second protective part. The sidewall of the first protective part is connected to the sidewall of the encapsulation cover. The protective shell has a power port facing the first protective part. The first protective part surrounds the power port. The second protective part faces the control motherboard.

[0018] This utility model's technical solution divides a gallium nitride (GaN) switch structurally and functionally into a protective shell and a power supply assembly. Gallium nitride is a wide-bandgap semiconductor material with excellent electron mobility and thermal stability, giving it great application potential in power electronics, especially in power converters. The protective shell primarily protects the control board and power supply assembly installed within the mounting cavity. The side wall of the protective shell has a network interface that connects directly to the control board. Any two network nodes that need to be connected can be plugged into the network interface, with the control board providing a dedicated electrical signal path for these two network nodes. Protecting the control board with the protective shell effectively prevents sudden damage to the equipment. Furthermore, to ensure the normal operation of the control board, the protective shell also houses the power supply assembly. The power supply assembly is made of gallium nitride, ensuring stable power conversion. The power supply assembly can be directly connected to an external power source, ensuring current stability, and also has charging and discharging capabilities. To ensure the safety of the power supply assembly... The protective housing has a mounting bracket facing the power supply component, which is installed inside the bracket. The bracket provides secondary protection to ensure the stability of the power supply component's operation and prevent damage. Both the mounting bracket and the protective housing can be equipped with heat dissipation structures. The use of gallium nitride (GaN) materials, combined with the heat dissipation structure, effectively ensures the stable operation of the switch. Furthermore, due to the high power density of GaN devices, the switch can be designed to be more compact, reducing its size. With the heat dissipation structure, there is no need for active cooling structures such as cooling fans; passive cooling can meet the cooling requirements. By reducing the size of the switch, it is easier to transport and move, and the internal components are protected during the transfer process. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the gallium nitride switch of this utility model from one direction.

[0021] Figure 2 This is a schematic diagram of the gallium nitride switch of this utility model from another perspective;

[0022] Figure 3 This is a schematic diagram of the internal structure of the gallium nitride switch of this utility model.

[0023] Explanation of icon numbers:

[0024] 1. Protective shell; 11. Mounting cavity; 12. Network interface; 13. Power port; 2. Mounting bracket; 21. Heat dissipation hole; 22. First protection part; 23. Second protection part; 3. Encapsulation cover; 31. Heat dissipation groove; 4. Control motherboard; 5. Power supply assembly.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] Reference Figures 1 to 3 In one embodiment of this utility model, a gallium nitride switch is proposed, including a protective shell 1 and a power supply assembly 5. The protective shell 1 has an installation cavity 11, and a control motherboard 4 is provided in the installation cavity 11. The control motherboard 4 is connected to one inner wall of the protective shell 1. The protective shell 1 has a network interface 12 facing the control motherboard 4, and the network interface 12 passes through the protective shell 1. The power supply assembly 5 passes through the installation cavity 11 and is connected to one side of the control motherboard 4. The inner wall of the protective shell 1 has a mounting bracket 2 on the end face away from the control motherboard 4, and the power supply assembly 5 is connected to the mounting bracket 2.

[0028] In a gallium nitride (GaN) switch of this application, the GaN switch is structurally and functionally divided into a protective shell 1 and a power supply component 5. Gallium nitride is a wide-bandgap semiconductor material with excellent electron mobility and thermal stability, which makes it highly promising for applications in power electronics, especially in power converters. The protective shell 1 is mainly used to protect the control motherboard 4 and the power supply component 5 installed in the mounting cavity 11. The side wall of the protective shell 1 is provided with a network interface 12, which is directly connected to the control motherboard 4. Any two network nodes that need to be connected can be plugged into the network interface 12, and the control motherboard 4 provides a dedicated electrical signal path for these two network nodes. Protecting the control motherboard 4 through the protective shell 1 can effectively prevent sudden damage to the equipment. In order to ensure the normal operation of the control motherboard 4, the protective shell 1 also contains a power supply component 5. The power supply component 5 is made of gallium nitride material to ensure the stability of the power conversion function of the power supply component 5. The power supply component 5 can be directly connected to an external power source to ensure the stability of the current, and also has charging and discharging functions. For the safety of component 5, the protective shell 1 has a mounting bracket 2 facing the power component 5. The power component 5 is installed in the mounting bracket 2, which provides secondary protection to ensure the stability of the power component 5 and prevent damage. At the same time, both the mounting bracket 2 and the protective shell 1 can be equipped with heat dissipation structures. The use of gallium nitride material in conjunction with the heat dissipation structure can effectively ensure the stable operation of the switch. Furthermore, due to the high power density of gallium nitride devices, the switch can be designed to be more compact, reducing its size. With the heat dissipation structure, there is no need to set up active heat dissipation structures such as cooling fans. It can meet the heat dissipation requirements by relying on its own passive heat dissipation. By reducing the size of the switch, it can be easily transported and transferred, and the safety of the internal components is protected during the transfer process.

[0029] See also Figure 3 In one embodiment of this application, the power supply component 5 includes a transformer circuit, a gallium nitride (GaN) switching transistor, a pulse modulation controller, and a DC filter circuit. The transformer circuit includes a transformer, one end of which is connected to the DC output terminal. The drain of the GaN switching transistor is connected to the other end of the primary coil of the transformer, and the source of the GaN switching transistor is connected to a reference ground. The pulse output control terminal of the pulse modulation controller is connected to the gate of the GaN switching transistor. The DC filter circuit is connected to the secondary coil of the transformer, so that the low-voltage DC output from the transformer is filtered and output as regulated DC.

[0030] In a gallium nitride (GaN) switch of this application, the switching transistor is a GaN transistor, with its drain connected to the primary coil of a transformer and its source connected to ground. A pulse modulation controller outputs a pulse width modulation (PWM) signal, which can be applied to the controlled terminal of the GaN transistor to control its conduction state, thereby achieving pulse width modulation of the DC current in the primary coil of the transformer. Because the switching transistor is a GaN transistor, its higher critical electric field, unique and excellent dynamic on-resistance, lower capacitance, and fast reverse recovery performance enable rapid switching on and off, achieving high-frequency operation of the power supply. This reduces the size of the power supply circuit and increases its output power. The DC output terminal ensures the stability of the power supply component 5. By using GaN in the power supply component 5, stability can be ensured while its size is reduced, making the switch smaller and easier to relocate.

[0031] See also Figure 3 In one embodiment of this application, the pulse modulation controller is equipped with an optocoupler feedback circuit, which is connected to the regulated DC output terminal and the voltage feedback terminal of the pulse modulation controller, respectively.

[0032] In a gallium nitride switch according to this application, the pulse modulation controller is equipped with an optocoupler feedback circuit, which is connected to both the regulated DC output terminal and the voltage feedback terminal of the pulse modulation controller. The output voltage of the regulated DC output terminal is fed back to the voltage feedback terminal of the pulse modulation controller via the optocoupler feedback circuit, so that the output pulse width can be adjusted by the pulse modulation controller to achieve voltage regulation and modulation of the output voltage.

[0033] See also Figure 3 In one embodiment of this application, the power supply component 5 further includes an AC / DC conversion circuit connected to the transformer circuit for converting the input AC power into DC power.

[0034] In a gallium nitride switch of this application, the power supply component 5 also includes an AC-DC conversion circuit, which is mainly used to convert the input AC power into DC power to ensure the stability of the device operation and can play a role in protecting the power supply component 5.

[0035] See also Figures 1 to 3 In one embodiment of this application, the protective shell 1 is provided with a sealing cover 3 away from the mounting cavity 11. The sealing cover 3 is connected to the protective shell 1 and wraps around the end face of the network interface 12 away from the protective shell 1. The mounting bracket 2 is connected to the side wall of the sealing cover 3. The side wall of the sealing cover 3 is provided with a plurality of heat dissipation grooves 31 evenly spaced apart.

[0036] In a gallium nitride switch of this application, a protective shell 1 is provided with an encapsulation cover 3 away from the mounting cavity 11. The encapsulation cover 3 is connected to the protective shell 1. Two sets of side plates are protruding from the periphery of the protective shell 1. The two sets of side plates are arranged opposite each other, and the network interface 12 is set facing the control motherboard 4 and connected to one side plate. The encapsulation cover 3 can be snapped onto the two side plates. The two side plates can be provided with a connecting structure protruding from the back of the encapsulation cover 3 to assist in fixing the encapsulation cover 3. Two sets of encapsulation plates are protruding from the protective shell 1. The encapsulation plates are arrayed with heat dissipation slots 31. The two sets of encapsulation plates are arranged correspondingly so that the heat dissipation slots 31 can form a connected air duct, so that the switch can dissipate heat more conveniently and ensure the working state of the switch. The mounting bracket 2 is connected to the side plate encapsulation plate of the encapsulation cover 3 and is set corresponding to the heat dissipation slots 31 to ensure the working state of the power supply component 5 and make the power supply component 5 work more stably.

[0037] See also Figures 1 to 3 In one embodiment of this application, the network interface 12 is provided in multiple sets, and the multiple sets of network interfaces 12 are arrayed on the side wall of the protective shell 1 and electrically connected to the control motherboard 4.

[0038] In a gallium nitride switch of this application, multiple sets of network interface 12 are provided, and the multiple sets of network interface 12 are arrayed on the side wall of the protective shell 1. Through these network interface structures, multiple sets of network interface nodes can be connected, so that the entire gallium nitride switch can simultaneously assist multiple network interfaces in connection while working stably.

[0039] See also Figures 1 to 3 In one embodiment of this application, the side wall of the mounting bracket 2 is provided with heat dissipation holes 21. The mounting bracket 2 includes a first protective part 22 and a second protective part 23. The side wall of the first protective part 22 is connected to the side wall of the encapsulation cover 3. The protective shell 1 is provided with a power port 13 facing the first protective part 22. The first protective part 22 is wrapped around the power port 13. The second protective part 23 is provided facing the control motherboard 4.

[0040] In a gallium nitride switch according to this application, the side wall of the mounting bracket 2 is provided with heat dissipation holes 21. The mounting bracket 2 includes a first protective part 22 and a second protective part 23. The heat dissipation holes 21 are provided on the side walls of the first protective part 22 and the second protective part 23. At the same time, the connecting lines of adjacent heat dissipation holes 21 and the connecting lines of heat dissipation grooves 31 are on the same straight line, which can facilitate the heat dissipation of the first protective part 22 and the second protective part 23. Meanwhile, in order to enable the power supply component 5 to be charged or the power supply to be directly adjusted so that the control motherboard 4 is connected to the power supply, a power port 1 is provided on the side wall of the protective shell 1 away from the network interface 12 facing the power supply component 5. 3. The first protection unit 22 encloses the power port 13 internally, while the second protection unit 23 faces the control motherboard 4. The power wiring on the control motherboard 4 passes through the second protection unit 23 and connects to the power assembly 5. The power assembly 5 may include a filter, a voltage converter, and a battery structure in terms of structure and function. The first protection unit 22 and the second protection unit 23 protect different structures of the power assembly 5 respectively, which can effectively prevent the different structures in the power assembly 5 from interfering with each other and causing the power assembly 5 to be unstable. The above structure can effectively ensure the working status of the switch. At the same time, the combination of gallium nitride makes the switch smaller and easier to transport.

[0041] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0042] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A gallium nitride switch, comprising: Include: The protective shell is provided with an installation cavity, and the control mainboard is arranged in the installation cavity. The control mainboard is connected to the inner wall of the protective shell. The protective shell is provided with a network interface facing the control mainboard. The network interface is arranged in the protective shell. The power supply assembly is arranged in the installation cavity and connected to one side of the control mainboard. The inner wall of the protective shell is provided with a mounting bracket away from the end surface of the control mainboard. The power supply assembly is connected to the mounting bracket. The power supply assembly includes a transformer circuit, a gallium nitride switch tube, a pulse modulation controller and a direct current filter circuit. The transformer circuit is provided with a transformer. One end of the primary coil of the transformer is connected to a direct current output end. The drain of the gallium nitride switch tube and the other end of the primary coil of the transformer are connected. The source of the gallium nitride switch tube is connected to the reference ground. The pulse output control end of the pulse modulation controller is connected to the gate of the gallium nitride switch tube. The direct current filter circuit is connected to the secondary coil of the transformer, so that the low voltage direct current output by the transformer is filtered and output as stabilized direct current.

2. A gallium nitride switch as claimed in claim 1, wherein The pulse modulation controller is provided with an optocoupler feedback circuit. The optocoupler feedback circuit is connected to the stabilized direct current output end and the voltage feedback end of the pulse modulation controller.

3. The gallium nitride switch of claim 1, wherein, The power supply assembly further includes an AC / DC conversion circuit connected to the transformer circuit, which is used to convert input alternating current into direct current.

4. The gallium nitride switch of any one of claims 1 to 2, wherein, The protective shell is provided with a packaging cover away from the installation cavity. The packaging cover is connected to the protective shell and surrounds the end surface of the network interface away from the protective shell. The mounting bracket is connected to the side wall of the packaging cover. The side wall of the packaging cover is uniformly and spacedly provided with a plurality of heat dissipation grooves.

5. A gallium nitride switch as claimed in claim 4, wherein The network interface is provided with a plurality of groups. The network interfaces are arrayed on the side wall of the protective shell and electrically connected to the control mainboard.

6. A gallium nitride switch as claimed in claim 5, wherein The side wall of the mounting bracket is provided with a heat dissipation hole. The mounting bracket includes a first protection part and a second protection part. The side wall of the first protection part is connected to the side wall of the packaging cover. The protective shell is provided with a power port facing the first protection part. The first protection part surrounds the power port. The second protection part faces the control mainboard.

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