Transmission system and device based on USBA

Abstract

The utility model relates to a transmission system and device based on a TypeC interface, the transmission system based on the TypeC interface comprises an MCU, a USB change-over switch, a USBA, an anti-backflow module, a USB current limiting switch, a BUCK chip, an MOS module, a first power supply module and a second power supply module, the second power supply module, the BUCK chip, the MOS module and the USBA are connected in sequence, the first power supply module, the USB current limiting switch, the anti-backflow module, the USBA, the MCU and the USB change-over switch are connected in sequence; wherein when the MCU detects a communication requirement, the MCU controls the first power supply module so as to supply power to the USBA; when the MCU detects a fast charging demand, the MCU controls the anti-backflow module to be disconnected and the second power supply module to supply power, the power supply module is intelligently controlled through the MCU, proper voltage can be provided according to the demand of equipment, the conventional communication demand is met, the fast charging demand can be met, and the internal space of the electronic equipment can be saved.

Description

Technical Field

[0001] This application relates to the technical field of data interfaces, and specifically, to a transmission system and device based on USBA. Background Art

[0002] In current electronic devices, the number and types of interfaces are restricted by various factors, especially the physical size, power consumption, cost, and user requirements of the devices. With the trend of miniaturization and high integration, modern electronic devices pursue thinness, lightness, and portability, resulting in limited internal space and being unable to accommodate too many or too large interfaces. To save space, the components inside the device tend to be highly integrated, and the space left for external interfaces is naturally limited. When facing the problem of "insufficient interfaces", it is difficult to meet the user's needs. Utility Model Content

[0003] The purpose of this application is to provide a transmission system and device based on USBA to solve the problem that external interfaces are difficult to meet the requirements.

[0004] To solve the above problems, this application adopts the following technical solutions to achieve:

[0005] The first aspect of this application provides a transmission system based on USBA. The transmission system based on USBA includes: an MCU, a USB switching switch, USBA, an anti-backflow module, a USB current limiting switch, a BUCK chip, a MOS module, a first power supply module, and a second power supply module. The second power supply module, the BUCK chip, the MOS module, and the USBA are connected in sequence. The first power supply module, the USB current limiting switch, the anti-backflow module, the USBA, the MCU, and the USB switching switch are connected in sequence; wherein, the voltage of the first power supply module is lower than the voltage of the second power supply module. When the MCU detects a communication requirement, the MCU controls the first power supply module to supply power to the USBA; when the MCU detects a fast charging requirement, the MCU controls the anti-backflow module to disconnect, and the second power supply module supplies power.

[0006] By the intelligent control of the power supply module by the MCU, it can provide an appropriate voltage according to the needs of the device, which not only meets the conventional communication requirements but also can handle the fast charging requirements, and can also save the internal space of the electronic device, adapt to the trend of miniaturization and high integration, and realize the thinness, lightness, and portability of the device.

[0007] Further, the USB switching switch includes a USB switching unit and a first impedance circuit. The USB switching unit is respectively connected to the MCU and the USBA. One end of the USB switching unit and the first impedance circuit are connected, and the other end of the first impedance circuit is grounded.

[0008] The USB switching switch can intelligently switch the power supply according to the instructions of the MCU, ensuring that the power requirements during data transmission and fast charging are met in a timely manner. The design of the first impedance circuit helps to ensure the stability and efficiency of the power supply, reduces signal interference by matching the impedance, and improves the reliability and stability of data transmission.

[0009] Furthermore, the anti-backflow module includes a plurality of diodes, and the plurality of diodes are connected in parallel.

[0010] Since the anti-backflow module includes a plurality of diodes connected in parallel, it can prevent reverse current from flowing into the device when the device is in the charging state, enhancing the stability and reliability of the anti-backflow module and protecting the device from damage.

[0011] Furthermore, the anti-backflow module includes an LED lamp, and the LED lamp is connected to the diode.

[0012] The LED lamp included in the anti-backflow module can be used as an intuitive indicator of the charging state, enabling users to clearly understand whether the device is charging.

[0013] Furthermore, the second power module includes a power control chip and a first capacitive reactance circuit. The power control chip is connected to the BUCK chip. One end of the power control chip and the first capacitive reactance circuit are connected, and the other end of the first capacitive reactance circuit is grounded.

[0014] The connection between the power control chip in the second power module and the BUCK chip can achieve precise control of the power supply, optimize the power conversion efficiency. Through the cooperation of the power control chip and the first capacitive reactance circuit, a stable voltage output is provided, ensuring that the electronic device can obtain a stable power supply under different load conditions.

[0015] Furthermore, the first capacitive reactance circuit is provided with a plurality of first capacitors, and the plurality of first capacitors are connected in parallel.

[0016] The plurality of first capacitors in the first capacitive reactance circuit are connected in parallel, which can provide a better voltage filtering effect, reduce the noise and ripple of the power supply, and ensure the stability of the output voltage.

[0017] Furthermore, the second power module includes a second capacitive reactance circuit. One end of the power control chip and the second capacitive reactance circuit are connected, and the other end of the second capacitive reactance circuit is grounded. The second capacitive reactance circuit is located between the power control chip and the MOS module.

[0018] Since the second capacitive reactance circuit is located between the power control chip and the MOS module, it can effectively filter out power supply noise and ripple, provide a stable voltage output, and ensure the normal operation of the electronic device.

[0019] Further, the second capacitive reactance circuit is provided with a plurality of second capacitors, and the plurality of second capacitors are connected in parallel.

[0020] The parallel connection of the multiple capacitors in the second capacitive reactance circuit increases the total capacitance, improves the performance of the filter, effectively suppresses high-frequency noise, and ensures the operation of the electronic device in a stable power supply environment.

[0021] Further, the second power supply module includes a filter circuit, one end of the filter circuit is connected to the power supply control chip, and the other end of the filter circuit is grounded.

[0022] The design of the filter circuit can effectively reduce power supply noise and ripple, provide a more stable voltage output, ensure the operation of the electronic device in a stable power supply environment, enable the voltage output by the power supply control chip to be filtered, effectively suppress high-frequency noise, and improve the power supply quality.

[0023] This application also provides a transmission device based on USBA, and the transmission device based on USBA includes the transmission system based on USBA described in any one of the above.

[0024] Compared with the prior art, the beneficial effects of this application are as follows: Due to the sequential connection method of the first multiplexing module, USB multiplexer, conversion module, and main control module, the efficient transmission of TypeC interface signals is realized. Among them, the first multiplexing module is responsible for transmitting the USB signal and DP signal of the TypeC interface, the USB multiplexer is responsible for transmitting the USB signal, the conversion module converts the USB signal into an HDMI signal, and the main control module is responsible for transmitting the signal to the external display screen. Through the TypeC interface, the universal connection between different devices is realized, avoiding the problem of needing to be equipped with various accessories such as conversion cables and adapters due to the coexistence of multiple interfaces, solving the compatibility problem of the MAC computer system and Windows computer system without a TypeC interface, and making the connection between devices more convenient and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a system diagram of a transmission system based on USBA provided by an embodiment of this application;

[0026] Figure 2 It is a system diagram of another transmission system based on USBA provided by an embodiment of this application;

[0027] Figure 3 It is a schematic diagram of a USB switch provided by an embodiment of this application;

[0028] Figure 4 It is a schematic diagram of an anti-backflow module provided by an embodiment of this application;

[0029] Figure 5 Schematic diagram of a BUCK chip provided by an embodiment of the present application; and

[0030] Figure 6 Schematic diagram of a second power module provided by an embodiment of the present application.

[0031] Explanation of reference numerals:

[0032] 100, MCU; 200, USB switching switch; 210, USB switching unit; 220, first impedance circuit; 300, USBA; 400, anti-backflow module; 401 diode; 402, LED lamp; 500, USB current limiting switch; 600, BUCK chip; 700, MOS module; 800, first power module; 900, second power module; 910, power control chip; 920, first capacitive reactance circuit; 921, first capacitor; 930, second capacitive reactance circuit; 931, second capacitor; 940, filtering circuit. Detailed implementation manners

[0033] The following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings.

[0034] It should be noted that, without conflict, the embodiments in the present application and the technical features in the embodiments may be combined with each other. The detailed description in the specific implementation manners should be understood as an explanatory description of the gist of the present application and should not be regarded as an improper limitation of the present application.

[0035] It should be understood that the orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings. These orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0036] In the design of electronic devices, the number and type of interfaces are restricted by various factors, especially the physical size, power consumption, cost, and user requirements of the device.

[0037] When facing the situation of "not enough interfaces", the reasons are usually as follows:

[0038] (1) Physical space limitation

[0039] Trend of miniaturization: Modern electronic devices pursue thin, light, and portable designs, resulting in limited internal space and unable to accommodate too many or too large interfaces.

[0040] Increasing integration: To save space, the components inside the device tend to be highly integrated, and naturally the space left for external interfaces is limited.

[0041] (2) Considerations of power consumption and heat dissipation

[0042] Energy efficiency: Adding interfaces may mean higher power consumption, affecting battery life and device heat dissipation.

[0043] Heat dissipation design: More interfaces may require more complex heat dissipation solutions, increasing design difficulty and cost.

[0044] (3) Cost control

[0045] Production cost: Each additional interface will increase the manufacturing cost, including material, assembly, and testing expenses.

[0046] Market positioning: High-end devices may offer more interfaces as a selling point, but for cost-sensitive entry-level products, reducing interfaces is a common cost control measure.

[0047] In view of this, the embodiments of the present application provide a transmission system based on USBA, which takes a USB3.0 switch and an anti-backflow module as the core. When the MCU detects the need for communication, it switches to the USB3.0 signal, simultaneously turns off the fast charging power supply, and turns on the system 5V to supply power to USBA; when the MCU detects the need for fast charging, it switches to the QC protocol, turns on the fast charging power supply, and the anti-backflow module automatically turns off the system 5V.

[0048] Figure 1 It is a system diagram of a transmission system based on USBA provided by the embodiments of the present application. Figure 2 It is another system diagram of a transmission system based on USBA provided by the embodiments of the present application. Figure 3 It is a schematic diagram of a USB switch provided by the embodiments of the present application. Figure 4 It is a schematic diagram of an anti-backflow module provided by the embodiments of the present application. Figure 5 It is a schematic diagram of a BUCK chip provided by the embodiments of the present application. Figure 6 It is a schematic diagram of a second power module provided by the embodiments of the present application. As Figures 1 to 6As shown in the figure, an embodiment of the present application provides a transmission system based on USBA, including: MCU100, USB switch 200, USBA 300, anti-backflow module 400, USB current limiting switch 500, BUCK chip 600, MOS module 700, first power module 800 and second power module 900. The second power module 900, BUCK chip 600, MOS module 700 and USBA 300 are connected in sequence. The first power module 800, USB current limiting switch 5500, anti-backflow module 400, USBA 300, MCU100 and USB switch 200 are connected in sequence. Among them, the voltage of the first power module 800 is lower than that of the second power module 900. When MCU100 detects a communication requirement, MCU100 controls the first power module 800 to supply power to USBA 300. When MCU100 detects a fast charging requirement, MCU100 controls the anti-backflow module 400 to disconnect, and the second power module 900 supplies power.

[0049] Specifically, components such as MCU100, USB switch 200, USBA 300, anti-backflow module 400, USB current limiting switch 500, BUCK chip 600, MOS module 700, first power module 800 and second power module 900 are integrated inside a compact electronic device, ensuring that the second power module 900, BUCK chip 600, MOS module 700 and USBA 300 are connected in sequence to form a power management and data transmission path. The voltage of the first power module 800 is set lower than that of the second power module 900 to meet different voltage requirements. For example, the voltage of the first power module 800 is 5V, and the voltage of the second power module 900 is 24V. When MCU100 detects a communication requirement, it controls the first power module 800 to supply power to USBA 300. When a fast charging requirement is detected, it controls the anti-backflow module 400 to disconnect, allowing the second power module 900 to supply power.

[0050] By intelligently controlling the power module through MCU100, it can provide appropriate voltage according to the needs of the device, which not only meets the conventional communication requirements, but also can handle the fast charging requirements, and can also save the internal space of the electronic device, adapt to the trend of miniaturization and high integration, and realize the thin, light and portable device.

[0051] In some embodiments, the USB switch 200 includes a USB switching unit 210 and a first impedance circuit 220. The USB switching unit 210 is respectively connected to MCU100 and USBA 300. One end of the USB switching unit 210 and the first impedance circuit 220 are connected, and the other end of the first impedance circuit 220 is grounded.

[0052] Specifically, the USB switching switch 200 is integrated into the electronic device to ensure its connection with other components such as the MCU 100 and the USBA 300. The USB switching unit 210 establishes electrical connections with the MCU 100 and the USBA 300 respectively to facilitate data and power transmission. One end of the first impedance circuit 220 is connected to the USB switching unit 210, and the other end is grounded to provide stable current and voltage. Through software programming or hardware design, the MCU 100 controls the USB switching unit 210 to achieve USB interface switching in different scenarios. During the implementation process, strict testing and verification are carried out to ensure the stability and reliability of the USB switching switch 200 and the first impedance circuit 220.

[0053] The USB switching switch 200 can intelligently switch the power supply according to the instructions of the MCU 100 to ensure that the power requirements during data transmission and fast charging are met in a timely manner. The design of the first impedance circuit 220 helps to ensure the stability and efficiency of the power supply, reduces signal interference by matching the impedance, and improves the reliability and stability of data transmission.

[0054] In some embodiments, the anti-backflow module 400 includes a plurality of diodes 401, and the plurality of diodes 401 are arranged in parallel.

[0055] Specifically, in the anti-backflow module 400, the plurality of diodes 401 are arranged in parallel to provide sufficient current capacity and voltage protection. For example, select appropriate diode types and specifications to ensure that the anti-backflow module 400 can effectively prevent excessive reverse current from flowing into the electronic device. At the same time, reasonably layout the anti-backflow module 400 and the diodes 401 to save space and ensure the stability and reliability of the circuit. During the implementation process, strict testing and verification are carried out to ensure the stability and reliability of the anti-backflow module 400 and the diodes 401.

[0056] Since the anti-backflow module 400 includes a plurality of diodes 401 arranged in parallel, it can prevent reverse current from flowing into the device when the device is in the charging state, enhancing the stability and reliability of the anti-backflow module 400 and protecting the device from damage.

[0057] In some embodiments, the anti-backflow module 400 includes an LED lamp 402, and the LED lamp 402 is connected to the diode 401.

[0058] Specifically, the LED lamp 402 is connected to the plurality of diodes 401 to form a series or parallel circuit configuration. Select appropriate specifications and types of the LED lamp 402 to ensure that it can work properly and cooperate with other components.

[0059] The LED lamp 402 included in the anti-backflow module 400 can be used as an intuitive indicator of the charging status, enabling users to clearly understand whether the device is charging.

[0060] In some embodiments, the second power module 900 includes a power control chip 910 and a first capacitive reactance circuit 920. The power control chip 910 is connected to the BUCK chip 600. One end of the power control chip 910 and the first capacitive reactance circuit 920 are connected, and the other end of the first capacitive reactance circuit 920 is grounded.

[0061] Specifically, an electrical connection is established between the power control chip 910 and the BUCK chip 600 to facilitate precise control of the power supply. At the same time, one end of the power control chip 910 and the first capacitive reactance circuit 920 are connected, and the other end is grounded to provide a stable current and voltage. Appropriate capacitive reactance components are selected to ensure the stability and reliability of the circuit. The second power module 900, the power control chip 910, and the first capacitive reactance circuit 920 are reasonably arranged to save space and ensure the stability and reliability of the circuit.

[0062] The connection between the power control chip 910 in the second power module 900 and the BUCK chip 600 can achieve precise control of the power supply, optimize the power conversion efficiency, and provide a stable voltage output through the cooperation of the power control chip 910 and the first capacitive reactance circuit 920, ensuring that the electronic device can obtain a stable power supply under different load conditions.

[0063] In some embodiments, the first capacitive reactance circuit 920 is provided with a plurality of first capacitors 921, and the plurality of first capacitors 921 are connected in parallel.

[0064] Specifically, in the first capacitive reactance circuit 920, a plurality of first capacitors 921 are set and connected in parallel to provide sufficient capacitive reactance capacity. Appropriate capacitor types and specifications are selected to ensure that the first capacitive reactance circuit 920 can operate normally and meet the requirements of circuit stability and reliability. And the first capacitive reactance circuit 920 and the first capacitors 921 are reasonably arranged to save space and ensure the stability and reliability of the circuit.

[0065] The plurality of first capacitors 921 in the first capacitive reactance circuit 920 are connected in parallel, which can provide a better voltage filtering effect, reduce the noise and ripple of the power supply, and ensure the stability of the output voltage.

[0066] In some embodiments, the second power module 900 includes a second capacitive reactance circuit 930. One end of the power control chip 910 and the second capacitive reactance circuit 930 are connected, the other end of the second capacitive reactance circuit 930 is grounded, and the second capacitive reactance circuit 930 is located between the power control chip 910 and the MOS module 700.

[0067] Specifically, the second power module 900 is integrated into the electronic device to ensure its connection with the power control chip 910 and the MOS module 700. One end of the second reactance circuit 930 is connected to the power control chip 910, and the other end of the second reactance circuit 930 is grounded to provide stable current and voltage. The second reactance circuit 930 is located between the power control chip 910 and the MOS module 700 to facilitate circuit layout and signal transmission, and appropriate reactance components are selected to ensure the stability and reliability of the circuit.

[0068] Since the second reactance circuit 930 is located between the power control chip 910 and the MOS module 700, it can effectively filter out power noise and ripple, provide a stable voltage output, and ensure the normal operation of the electronic device.

[0069] In some embodiments, the second reactance circuit 930 is provided with a plurality of second capacitors 931, and the plurality of second capacitors 931 are connected in parallel.

[0070] Specifically, in the second reactance circuit 930, a plurality of second capacitors 931 are set and connected in parallel to provide sufficient reactance capacity. Appropriate capacitor types and specifications are selected so that the second reactance circuit 930 can work properly and meet the working requirements of the circuit. The second reactance circuit 930 and the second capacitors 931 are reasonably arranged to save space and ensure the stability and reliability of the circuit.

[0071] The parallel connection of the plurality of capacitors in the second reactance circuit 930 increases the total capacitance, improves the performance of the filter, effectively suppresses high-frequency noise, and ensures the operation of the electronic device in a stable power environment.

[0072] In some embodiments, the second power module 900 includes a filter circuit 940. One end of the filter circuit 940 is connected to the power control chip 910, and the other end of the filter circuit 940 is grounded.

[0073] Specifically, in the second power module 900, a filter circuit 940 is set. One end of it is connected to the power control chip 910, and the other end is grounded to provide smooth current and voltage. Appropriate filter components, such as capacitors and inductors, are selected to ensure that the filter circuit 940 can work properly and meet the requirements of circuit stability and reliability.

[0074] The design of the filter circuit 940 can effectively reduce power noise and ripple, provide a more stable voltage output, ensure the operation of the electronic device in a stable power environment, enable the voltage output by the power control chip 910 to be filtered, effectively suppress high-frequency noise, and improve the power quality.

[0075] The embodiment of the present application further provides a transmission device based on USBA. The transmission device based on USBA includes the transmission system based on USBA in any of the above items.

[0076] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed in the present application.

Claims

1. A transmission system based on USBA, characterized in that, The USBA-based transmission system includes: an MCU, a USB switch, a USBA, an anti-backflow module, a USB current-limiting switch, a BUCK chip, a MOS module, a first power module, and a second power module. The second power module, the BUCK chip, the MOS module, and the USBA are connected in sequence. The first power module, the USB current-limiting switch, the anti-backflow module, the USBA, the MCU, and the USB switch are connected in sequence. Among them, the voltage of the first power module is lower than that of the second power module. When the MCU detects a communication requirement, the MCU controls the first power module to supply power to the USBA. When the MCU detects a fast charging requirement, the MCU controls the anti-backflow module to disconnect, and the second power module supplies power.

2. The transmission system based on USBA according to claim 1, characterized in that, The USB switch includes a USB switching unit and a first impedance circuit. The USB switching unit is respectively connected to the MCU and the USBA. One end of the USB switching unit and the first impedance circuit are connected, and the other end of the first impedance circuit is grounded.

3. A transmission system based on USBA according to claim 1, characterized in that, The anti-backflow module includes a plurality of diodes, and the plurality of diodes are arranged in parallel.

4. The transmission system based on USBA according to claim 3, characterized in that, The anti-backflow module includes an LED lamp, and the LED lamp is connected to the diode.

5. A transmission system based on USBA according to claim 1, characterized in that, The second power module includes a power control chip and a first capacitive reactance circuit. The power control chip is connected to the BUCK chip. One end of the power control chip and the first capacitive reactance circuit are connected, and the other end of the first capacitive reactance circuit is grounded.

6. The transmission system based on USBA according to claim 5, characterized in that, The first capacitive reactance circuit is provided with a plurality of first capacitors, and the plurality of first capacitors are arranged in parallel.

7. A transmission system based on USBA according to claim 5, characterized in that, The second power module includes a second capacitive reactance circuit. One end of the power control chip and the second capacitive reactance circuit are connected, and the other end of the second capacitive reactance circuit is grounded. The second capacitive reactance circuit is located between the power control chip and the MOS module.

8. A transmission system based on USBA according to claim 7, characterized in that, The second capacitive reactance circuit is provided with a plurality of second capacitors, and the plurality of second capacitors are arranged in parallel.

9. The transmission system based on USBA according to claim 8, characterized in that, The second power module includes a filter circuit. One end of the filter circuit is connected to the power control chip, and the other end of the filter circuit is grounded.

10. A transmission device based on USBA, characterized in that, The USBA-based transmission device includes the USBA-based transmission system according to any one of claims 1-9.

Images