Switch and power supply system, method and equipment based on purely-domestic components

Abstract

The invention discloses a switch, a power supply system, a method and equipment based on purely-domestic components, four paths of QSGMII signals are expanded and output into at least 16 paths of gigabit RJ45 ports by using a second chip (such as CTC21108), and the number of ports of the switch can be remarkably increased by the system. Therefore, a single device can be connected with more terminal devices, so that the coverage range and the connection capability of the network are expanded. And at least eight gigabit RJ45 ports and at least four gigabit optical fiber ports are integrated, so that the high-speed data transmission capability is ensured. Therefore, the number of ports of the switch is increased by introducing the expansion chip, and the design of the power supply unit is optimized, so that the problem of limited POE power supply ports in the prior art is solved. The performance and the flexibility of the switch are improved, the cost is reduced, and the application requirements in different scenes are met.

Description

Technical Field

[0001] The present application relates to the field of power supply technology, and in particular to a switch and power supply system, method and equipment based on purely domestic components. Background Art

[0002] With the rapid development and popularization of network technology, switches, as core devices for network connections, have been widely used in data centers, enterprise networks, home networks and other occasions.

[0003] In existing POE powered switches, the number of POE power ports is often limited and cannot meet large-scale or high-density power supply needs. With the continuous increase and diversification of network devices, the demand for POE power ports is also growing. However, due to the physical size and cost considerations of the switch, the number of POE power ports often cannot meet the power supply needs of all devices.

[0004] The limited number of POE power supply ports restricts the application scenarios of switches. In some occasions that require high-density power supply, such as data centers and large conference rooms, existing switches can meet the demand for the number of power supply ports. Summary of the invention

[0005] Based on the above problems, the present application provides a switch and power supply system, method and device based on purely domestic components to increase the number of ports of the switch.

[0006] To solve the above problems, the technical solutions provided in the embodiments of the present application are as follows:

[0007] In a first aspect, the present application provides a switch and power supply system based on purely domestic components, including a power supply unit, a first chip and a second chip, wherein the first chip includes at least a first number of Gigabit RJ45 ports and at least a second number of Gigabit fiber optic ports, the power supply unit is connected to the first chip to provide power to the first chip, and the second chip is used to expand and output a third number of QSGMII signals into at least a fourth number of Gigabit RJ45 ports to increase the number of ports of the switch.

[0008] In a possible implementation, a third chip is connected to the power supply unit and is used to convert a voltage provided by the power supply unit into a target voltage suitable for transmission through a network cable.

[0009] In a possible implementation, the system also includes: a transformer, the transformer is connected to the third chip, the third chip is used to transmit the target voltage to the network cable through the center tap of the transformer, one end of the network cable is connected to the port of the first chip, and the other end is connected to the terminal device.

[0010] In a possible implementation, the system also includes: a first capacitor, a second capacitor and a third capacitor, the first capacitor is connected between the LED pin of the third chip and the ground wire, the second capacitor and the third capacitor are respectively connected between the power supply voltage output pin of the third chip and the ground wire, and the second capacitor is connected in parallel with the third capacitor.

[0011] In one possible implementation, the system also includes: a first diode, a second diode, and a third diode; the first diode is connected between the LED pin of the third chip and the center tap of the transformer, the second diode is connected between the current outflow pin DRAN pin and the power supply voltage output pin, and the third diode is connected between the test point and the DRAN pin.

[0012] In a possible implementation, the system further includes: a clock generator, which is connected to the first chip and is used to provide a clock signal corresponding to an operation of the processor.

[0013] In a possible implementation, the system further includes: a physical layer port chip PHY chip; the PHY chip is connected to the port of the first chip via a differential signal pair of the PHY chip, so as to implement data transmission at the physical layer.

[0014] In a possible implementation manner, the system further includes: a monitoring unit, wherein the monitoring unit is configured to obtain operating status information of the first chip and the power supply unit.

[0015] The second aspect of the present application provides a switch and a power supply method based on purely domestic components, including: using the power supply system described in the first aspect to supply power to a terminal device.

[0016] A third aspect of the present application provides an electronic device, comprising the power supply system described in the first aspect.

[0017] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, and when the instructions are executed on a terminal device, the terminal device executes the power supply system as described in the first aspect above.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] By using a second chip (such as CTC21108) to expand the output of 4 QSGMII signals to at least 16 Gigabit RJ45 ports, the system can significantly increase the number of ports of the switch. This enables a single device to connect to more terminal devices, thereby expanding the coverage and connectivity of the network. The integration of at least 8 Gigabit RJ45 ports and at least 4 Gigabit fiber ports ensures high-speed data transmission capabilities. Therefore, the present application increases the number of ports of the switch by introducing an expansion chip and optimizes the design of the power supply unit, thereby solving the problem of limited POE power supply ports in the prior art. Not only does it improve the performance and flexibility of the switch, but it also reduces costs and meets application requirements in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings required for use in the embodiments or the description of the prior art 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 paying creative work.

[0021] Figure 1 A schematic diagram of a power supply system provided in an embodiment of the present application;

[0022] Figure 2 Another schematic diagram of a power supply system provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of a first power supply circuit provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of a second power supply circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] To facilitate understanding of the technical solutions provided by the embodiments of the present application, the professional terms involved in the embodiments of the present application will be explained below.

[0027] Power over Ethernet (PoE), also known as Power over LAN (POL) or Active Ethernet, is a new standard specification that uses existing standard Ethernet transmission cables to transmit data and electrical power at the same time, maintaining compatibility with existing Ethernet systems and users. POE power supply technology allows network devices to be provided with power and data connections simultaneously through Ethernet cables, thereby simplifying the wiring and power supply of network devices.

[0028] The POE power supply system mainly consists of two parts: Power Sourcing Equipment (PSE) and Powered Device (PD). The PSE device is a device that provides power to Ethernet client devices and is also the manager of the entire POE Ethernet power supply process; while the PD device is the PSE load that receives power, that is, the client device of the POE system, such as IP phones, network security cameras, APs, etc.

[0029] To facilitate understanding of the technical solutions provided by the embodiments of the present application, the background technology involved in the embodiments of the present application will be described below.

[0030] As mentioned earlier, using a dedicated POE power management chip means higher design costs, because these chips are usually more expensive than ordinary data transmission chips. In addition, since each POE port requires separate power management, this will increase the bill of materials (BOM) cost. In addition, if the supply of dedicated POE power chips in the market is unstable or affected by the international trade environment, it may cause supply chain problems. Dedicated chips also mean higher energy consumption, especially when dealing with high power requirements.

[0031] In addition, the number of POE power ports is limited. The number of POE power ports is limited by the design of the switch and the capabilities of the power management chip used. This means that under a fixed hardware configuration, adding more power ports requires a more complex design or replacing a higher-performance power management solution. If more POE power devices are required in a network environment, additional switches or upgrades to higher-end products may be required, which undoubtedly increases deployment costs and complexity.

[0032] In order to solve the above problems, a power supply system is provided in an embodiment of the present application. By using a second chip (such as CTC21108) to expand the output of 4 QSGMII signals into at least 16 Gigabit RJ45 ports, the system can significantly increase the number of ports of the switch. This enables a single device to connect more terminal devices, thereby expanding the coverage and connectivity of the network. Integrating at least 8 Gigabit RJ45 ports and at least 4 Gigabit fiber ports ensures high-speed data transmission capabilities. The power supply unit directly provides a stable power supply to the network port chip, ensuring the stable operation of the power supply system in various environments.

[0033] In summary, the power supply system integrates multiple high-speed network ports and power supply units, which not only improves the performance and scalability of the network, but also simplifies wiring and management, while enhancing the reliability and stability of the system. This makes the system more suitable for modern network environments that require high-density connections, high-speed data transmission, and simplified deployment.

[0034] It should be noted that the power supply system, method and device provided in the present application can be applied to the field of computer technology. The above is only an example and does not limit the application field of the power supply system, method and device provided in the present application. In addition, the embodiment of the present application may not limit the equipment on which the power supply system is mounted. For example, the power supply system of the embodiment of the present application can be applied to data processing equipment such as terminal devices or servers. Among them, the terminal device can be an electronic device such as a computer, a personal digital assistant (PDA). The server can be a stand-alone server, a cloud server, or a cluster server composed of multiple servers.

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] The following describes a power supply system provided by the present application through an embodiment. Figure 1 , Figure 1A schematic diagram of a power supply system provided for an embodiment of the present application includes: a power supply unit, a first chip and a second chip, wherein the first chip includes at least a first number of Gigabit RJ45 ports and at least a second number of Gigabit fiber optic ports, the power supply unit is connected to the first chip to provide power to the first chip, and the second chip is used to expand and output a third number of QSGMII signals into at least a fourth number of Gigabit RJ45 ports to increase the number of ports of the switch.

[0037] The power supply unit is directly connected to the first chip, which means that power resources can be allocated more flexibly, thereby avoiding the cost and complexity caused by the need for independent power management for each POE port.

[0038] The first chip integrates multiple Gigabit RJ45 ports and Gigabit fiber ports, helping to reduce the number of components required, thereby simplifying the complexity of the entire system and potentially reducing costs.

[0039] By introducing the second chip, the embodiment of the present application can expand the third number of QSGMII (Quad Small Form-factor Pluggable Gigabit Interface Converter) signals to at least a fourth number of Gigabit RJ45 ports. This method not only significantly increases the number of ports of the switch, but also improves the flexibility of the system. Because the QSGMII port supports high-speed data transmission and can be flexibly converted into more Gigabit RJ45 ports through the expansion chip, it can meet the port requirements in different scenarios.

[0040] Compared with the traditional solution of using a dedicated POE power chip, this application may reduce costs to a certain extent by optimizing the design of the power supply unit and using a more general chip to achieve port expansion. In addition, since the increase in the number of ports is achieved through the expansion chip instead of adding an independent POE power supply, this also helps to control costs.

[0041] The embodiment of the present application closely combines the power supply unit, the first chip and the second chip to form a highly integrated power supply system. This design not only simplifies the complexity of the system, but also improves the stability and reliability of the system. At the same time, the highly integrated design also helps to reduce the size of the switch, making it easier to deploy and maintain.

[0042] The power supply system provided in the embodiment of the present application supports a Gigabit RJ45 port and a Gigabit fiber port, which are very common in network devices and therefore have high compatibility. In addition, since an expansion chip is used to increase the number of ports, the system also has a certain degree of scalability and can be configured and upgraded according to actual needs.

[0043] The following describes a power supply system provided by the present application through an embodiment. Figure 2 , Figure 2 A schematic diagram of another power supply system provided in an embodiment of the present application.

[0044] The embodiment of the present application adopts the CTC2118 chip as the core, which supports the layer 2 switching function and is a key component for building an Ethernet switch. Through the CTC21108 chip, multiple types of network ports can be output, including a gigabit RJ45 port and a gigabit optical port.

[0045] The CTC2118 chip directly outputs 8 Gigabit RJ45 ports. If the switch design supports PoE, some or all of these ports can be configured as PoE ports. This means that devices connected through these ports (such as IP phones, wireless access points, network cameras, etc.) can receive data and power from the switch at the same time.

[0046] The 16-way Gigabit RJ45 port extended by the CTC21108 chip through the QSGMII signal can also support PoE function, depending on the design and configuration of the switch. These additional ports increase the port density of the switch and also provide connection options for more PoE devices.

[0047] For example, 8 Gigabit RJ45 ports are output through the CTC2118 chip, 4 Gigabit optical ports are output, and 16 Gigabit RJ45 ports are output through the CTC21108 chip based on 4 QSGMII signals. There are a total of 24 Gigabit Ethernet ports and 4 Gigabit optical ports.

[0048] Among them, RISC-V represents the processor architecture used. RISC-V is an open source instruction set architecture that is commonly used in embedded systems and network equipment.

[0049] The clock generator is a key synchronization component in network equipment. It is responsible for generating various clock signals required inside the equipment to ensure accurate synchronization of data between modules.

[0050] 8*GE, that is, 8 Gigabit Ethernet ports, means that the device has 8 Gigabit Ethernet ports for connection and data transmission.

[0051] 4x QSGMIIPHY, that is, four QSGMII physical layer ports, QSGMII is a high-speed Ethernet port standard suitable for high-density Ethernet switches. Here it means that the device communicates with other components or devices through four QSGMII ports.

[0052] S4-S7 and S0-S3 represent different internal functional modules or ports. The connection and data flow between them illustrate the processing flow inside the device. It can also represent a set of switches or selectors used to switch between different functions or modes.

[0053] Power Supply Unit (PSU): Responsible for providing power to the entire device to ensure the normal operation of the device.

[0054] 24x1GE, or 24 Gigabit Ethernet ports, is another important part of the device's external ports, indicating that the device can support a large number of Gigabit Ethernet connections to meet the needs of high-density network environments.

[0055] The large number of Ethernet ports shown in the figure are the target ports for PoE power supply, allowing the device to power connected terminal devices such as IP cameras, wireless access points, etc. The integration of components such as RISC-V processors and clock managers ensures that the device can efficiently handle data and power management tasks, which is critical for the stable operation of the PoE power supply system.

[0056] See also Figure 3 , Figure 3 The first power supply circuit diagram provided in the embodiment of the present application shows a circuit design related to PoE power supply technology, which includes multiple functional modules such as power conversion, signal filtering, testing and reset. Through the POE dedicated power chip MK3614T, the circuit can integrate +54V power and data signals into the same network cable, and output power to multiple terminal devices through the switch.

[0057] +54V voltage is transmitted to the network cable through the center tap of the transformer. Power and data are transmitted to the terminal device through the network cable, and each network port can independently output 30W of power. Each POE network port can be controlled separately to ensure that even if a port has a problem, it will not affect the normal operation of other ports.

[0058] The embodiment of the present application uses MK3614T as a PoE dedicated power chip, which can provide a +54V voltage that complies with the IEEE802.3at standard. The MK3614T chip is responsible for converting and outputting the power to the center tap of the transformer. The center tap of the transformer is a bridge connecting the power chip output and the Ethernet cable. In this way, the power can be safely transmitted to the network cable.

[0059] GND_PSE indicates the ground line of the power supply equipment (PSE) and is used to ensure the return path of the current.

[0060] AGND stands for analog ground, which is used for ground connection of analog circuits inside the chip to ensure signal stability.

[0061] RESETb represents the reset pin, which is used to reset the power management chip.

[0062] MIDb stands for mid-point deviation pin, which is used to adjust the output voltage.

[0063] DRAIN stands for the drain pin, which is used to connect to the center tap of the transformer and is the critical path for current transmission.

[0064] VPWR represents the power output pin, which is connected to the center tap of the transformer for outputting +54V voltage.

[0065] LED pins are often used to provide status indication. In a PoE power supply system, LEDs may be used to indicate power status, data transmission activity, or connection status. LED pins can be connected to the output of a power management chip or other control logic to light up the LED under certain conditions to provide visual feedback.

[0066] In a possible implementation, the power supply system also includes a plurality of diodes, each of which is connected between the center tap of the transformer and the output pin of the third chip to protect the components in the circuit from reverse current damage. C536, C537, C538, and C539 are capacitors used for decoupling and filtering of the power supply circuit to reduce noise and stabilize voltage. Among them, C538 is 1uF / 100V and may be used for main voltage stability.

[0067] R704, R706, R707, R708, R711, R714, R715, R716 are resistors used to set various parameters of the circuit, such as current limit, voltage division, etc. The accuracy of the resistors is 1%, ensuring the stability and reliability of the circuit.

[0068] D113, D114, and D115 are diodes that may be used for rectification or protection circuits to prevent reverse current from damaging equipment.

[0069] The figure shows the values ​​of multiple resistors and capacitors, such as "150K / 1%", "51R / 1%", etc. These components are used in circuits to limit current, stabilize voltage, or provide signal filtering. In a PoE power supply system, resistors and capacitors may be used to protect the circuit from voltage fluctuations or current surges.

[0070] Labels such as "TEST1A_PSE+" and "TEST" indicate test points, which are used to verify the working status of the circuit or measure parameters such as voltage and current.

[0071] See also Figure 4 , Figure 4The second power supply circuit diagram provided for the embodiment of the present application represents the circuit part of the switch used for data transmission and PoE (Power over Ethernet) power supply. It supports the Power over Ethernet function, that is, allows the device to receive data and power simultaneously through the Ethernet cable.

[0072] C385, C392, C398, C382, C396, C384, C387, C380 represent different capacitors with a capacity of 100nF and a withstand voltage of 50V. These capacitors are usually used for signal decoupling to ensure signal stability and reduce noise.

[0073] PHY1_P0_TPI_ and PHY1_P1_TPI_ represent the transmit (TX) and receive (RX) signal paths of the PHY chip (physical layer port chip). These signal paths are used for data transmission at the physical layer.

[0074] P17_TRDx+ and P17_TRDx- represent the transmit (TX) and receive (RX) differential signal pair for data transmission.

[0075] HR644840E is a model of an electronic component used for signal processing or protection.

[0076] TDx+, TDx-, ​​and TCTx represent test points or signal paths used for debugging and verification of circuits.

[0077] MCTx, MXx+, and MXx- represent the signal matching and transmission paths, which are used to optimize signal quality.

[0078] PORT17_MDI_Px and PORT17_MDI_Nx represent the signal path of MDI (Media Dependent Port) and are used to connect to network devices.

[0079] R425, R413, R408, R431, R402, R397, R436, R442 represent different resistors, and their resistance values ​​and precision may be different. Resistors are used to limit current, divide voltage, and match signals.

[0080] C400 represents a 1nF / 2KV capacitor, probably used for high voltage decoupling or protection.

[0081] PoE power supply indicates the test points related to PoE power supply, which is used to verify the PoE function.

[0082] In summary, PoE power supply is a technology that can transmit power and data to devices through twisted pair cables in Ethernet. It uses a standard +54V voltage, and the terminal device does not need to increase the power input, which meets the power supply needs of the device without affecting the network transmission of the device. The embodiment of the present application uses a POE-specific power supply chip MK3614T to connect the +54V power supply to the center tap of the transformer, and then output it to the terminal device through the network cable to complete the power supply. The switch outputs 8 POE network ports, and each network port can output 30W power to power the terminal device separately.

[0083] The embodiments of the present application also provide corresponding devices and computer storage media for implementing the power supply system provided in the embodiments of the present application.

[0084] The device includes a memory and a processor, the memory is used to store instructions or codes, and the processor is used to execute the instructions or codes so that the device executes the power supply system solution described in any embodiment of the present application.

[0085] The computer storage medium stores codes, and when the codes are executed, a device executing the codes implements the power supply system described in any embodiment of the present application.

[0086] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0087] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0088] It should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0089] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0091] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0092] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A switch and power supply system based on purely domestic components, characterized in that: The switch comprises a power supply unit, a first chip and a second chip, wherein the first chip comprises at least a first number of Gigabit RJ45 ports and at least a second number of Gigabit optical fiber ports, the power supply unit is connected to the first chip and is used to provide power to the first chip, and the second chip is used to expand and output a third number of QSGMII signals into at least a fourth number of Gigabit RJ45 ports to increase the number of ports of the switch.

2. The system according to claim 1, characterized in that The system further includes: a third chip, which is connected to the power supply unit and is used to convert the voltage provided by the power supply unit into a target voltage suitable for transmission through a network cable.

3. The system according to claim 2, characterized in that The system also includes: a transformer, the transformer is connected to the third chip, the third chip is used to transmit the target voltage to the network cable through the center tap of the transformer, one end of the network cable is connected to the port of the first chip, and the other end is connected to the terminal device.

4. The system according to claim 3, characterized in that The system also includes: a first capacitor, a second capacitor and a third capacitor, the first capacitor is connected between the LED pin of the third chip and the ground wire, the second capacitor and the third capacitor are respectively connected between the power supply voltage output pin of the third chip and the ground wire, and the second capacitor is connected in parallel with the third capacitor.

5. The system according to claim 3, characterized in that The system also includes: a first diode, a second diode, and a third diode; the first diode is connected between the LED pin of the third chip and the center tap of the transformer, the second diode is connected between the current outflow pin DRAN pin and the power supply voltage output pin, and the third diode is connected between the test point and the DRAN pin.

6. The system according to claim 1, characterized in that The system further includes: a clock generator, which is connected to the first chip and is used to provide a clock signal corresponding to the operation of the processor.

7. The system according to claim 1, characterized in that The system further comprises: a physical layer port chip PHY chip; the PHY chip is connected to the port of the first chip via a differential signal pair of the PHY chip, so as to realize data transmission at the physical layer.

8. The system according to claim 1, characterized in that The system further includes: a monitoring unit, which is used to obtain operating status information of the first chip and the power supply unit.

9. A switch and power supply method based on purely domestic components, characterized in that: include: The power supply system according to any one of claims 1 to 8 is used to supply power to a terminal device.

10. An electronic device, characterized in that: A power supply system comprising the power supply system according to any one of claims 1 to 8.

Images