Adapter circuit, adapter and adapter control method

Abstract

The invention relates to a switching circuit, an adapter and a control method of the adapter, and the switching circuit comprises a first interface which is used for being coupled with electronic equipment; the second interface is used for being coupled with charging equipment; the power transmission circuit is coupled with the first interface and the second interface, and the power transmission circuit is used for controlling the charging equipment to charge the electronic equipment through the second interface and the first interface; the processing circuit is coupled with the first interface, the processing circuit comprises a wireless communication module used for being in communication connection with wireless communication equipment, and the processing circuit is used for achieving audio data interaction between the electronic equipment and the wireless communication equipment through the first interface and the wireless communication module. The switching circuit can charge the electronic equipment through the power transmission circuit, and the audio data wireless interaction is realized through the processing circuit, so that the function of the switching circuit is enriched, and the use experience of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic equipment, and in particular to a switching circuit, a switch and a control method of the switch. Background Art

[0002] At present, electronic devices communicate with wireless communication devices through built-in wireless communication modules to achieve wireless transmission of audio data. Since the wireless communication module and the wireless communication device cannot fully match, the quality of audio data transmission is affected. By connecting an adapter that matches the wireless communication device to the interface of the electronic device, the quality of audio data transmission is improved. However, since the adapter has a single function and cannot meet the needs of users, the user experience is poor. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a switching circuit, a switch and a control method of the switch.

[0004] According to a first aspect of the present disclosure, a switching circuit is provided, the switching circuit comprising:

[0005] A first interface, the first interface is used to couple with an electronic device;

[0006] a second interface, the second interface being used to couple with a charging device;

[0007] a power transmission circuit, the power transmission circuit being coupled to both the first interface and the second interface, and the power transmission circuit being used to control the charging device to charge the electronic device through the second interface and the first interface;

[0008] A processing circuit is coupled to the first interface, the processing circuit includes a wireless communication module for communicating with a wireless communication device, and the processing circuit is used to implement audio data interaction between the electronic device and the wireless communication device through the first interface and the wireless communication module.

[0009] In some embodiments of the present disclosure, the processing circuit is configured to interact with the wireless communication device for the audio data in a low-latency mode.

[0010] In some embodiments of the present disclosure, the switching circuit further includes:

[0011] A power management circuit is coupled to the first terminal of the first interface and the processing circuit, and the first terminal of the first interface is used to transmit the electric energy output by the electronic device to the power management circuit.

[0012] In some embodiments of the present disclosure, the power management circuit is further coupled to a second terminal of the first interface, and the second terminal of the first interface is used to transmit the electric energy output by the electronic device to the power management circuit; and / or,

[0013] The power management circuit is also coupled to a first terminal of the second interface, and the first terminal of the second interface is used to transmit the electric energy output by the charging device to the power management circuit.

[0014] In some embodiments of the present disclosure, the power transmission circuit includes:

[0015] a communication branch, wherein a first end of the communication branch is coupled to a third terminal of the first interface, and a second end of the communication branch is coupled to a second terminal of the second interface, and the communication branch is used to transmit a charging protocol and battery charging information to the electronic device through the third terminal of the first interface, and to transmit the charging protocol and the battery charging information to the charging device through the second terminal of the second interface;

[0016] A power supply branch, wherein the first end of the power supply branch is coupled to the first terminal of the first interface, the second end of the power supply branch is coupled to the first terminal of the second interface, and the third end of the power supply branch is coupled to the power management circuit, and the power management circuit is used to control the on and off of the power supply branch through the third end of the power supply branch.

[0017] In some embodiments of the present disclosure, the switching circuit further includes:

[0018] A first unidirectional device, the first unidirectional device is coupled between the first terminal of the second interface and the power management circuit, and the first unidirectional device is used to make the first terminal of the second interface unidirectionally conductive to the power management circuit;

[0019] A second unidirectional device is coupled between the first terminal of the first interface and the power management circuit, and is used to enable the first terminal of the first interface to conduct unidirectionally to the power management circuit.

[0020] In some embodiments of the present disclosure, the switching circuit further includes:

[0021] A third unidirectional device is coupled between the second terminal of the first interface and the power management circuit, and is used to enable the second terminal of the first interface to conduct unidirectionally toward the power management circuit.

[0022] In some embodiments of the present disclosure, the switching circuit further includes:

[0023] An overvoltage protection circuit, wherein a first end of the overvoltage protection circuit is coupled to a first terminal of the second interface, and a second end of the overvoltage protection circuit is coupled to a second end of the power supply branch and the power management circuit.

[0024] In some embodiments of the present disclosure, the third terminal of the second interface, the power transmission circuit, and the processing circuit are coupled via a bus.

[0025] According to a second aspect of the present disclosure, a converter is provided, the converter comprising the converter circuit as described above.

[0026] According to a third aspect of the present disclosure, a control method for an adapter is provided, the control method for the adapter comprising:

[0027] Controlling the adapter to perform audio data interaction between the electronic device and the wireless communication device;

[0028] When the adapter is coupled to a charging device, the charging device is controlled to charge the electronic device and audio data interaction between the electronic device and the wireless communication device is maintained.

[0029] In some embodiments of the present disclosure, controlling the adapter to perform audio data interaction between the electronic device and the wireless communication device includes:

[0030] Supply power to the power management circuit;

[0031] Controlling the power management circuit to supply power to the processing circuit;

[0032] The processing circuit is controlled to perform audio data exchange between the electronic device and the wireless communication device.

[0033] In some embodiments of the present disclosure, controlling the charging device to charge the electronic device includes:

[0034] Controlling the power management circuit to perform charging management on the power transmission circuit;

[0035] The power transmission circuit is controlled to charge the electronic device with the electric energy provided by the charging device.

[0036] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0037] The switching circuit includes a first interface, a second interface, a power transmission circuit and a processing circuit. The power transmission circuit is coupled to both the first interface and the second interface, and can control the charging device to charge the electronic device. The processing circuit is coupled to the first interface, and can realize the audio data interaction between the electronic device and the wireless communication device. Since the conversion circuit can charge the electronic device through the power transmission circuit and realize the wireless interaction of audio data through the processing circuit, the function of the switching circuit is enriched, thereby improving the user experience.

[0038] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0040] Figure 1 It is a schematic diagram of the structure of an adapter;

[0041] Figure 2 is a schematic diagram of an application scenario of a switching circuit provided by an exemplary embodiment of the present disclosure;

[0042] Figure 3 is a structural schematic diagram of a switching circuit provided by an exemplary embodiment of the present disclosure;

[0043] Figure 4 is a structural schematic diagram of a switching circuit provided by another exemplary embodiment of the present disclosure;

[0044] Figure 5-1 is a structural schematic diagram of a switching circuit provided by another exemplary embodiment of the present disclosure;

[0045] Figure 5-2 is a structural schematic diagram of a switching circuit provided by another exemplary embodiment of the present disclosure;

[0046] Figure 5-3 is a structural schematic diagram of a switching circuit provided by another exemplary embodiment of the present disclosure;

[0047] Figure 6 is a flow chart of a control method of an adapter provided by an exemplary embodiment of the present disclosure;

[0048] Figure 7 is a flow chart of a control method of an adapter provided by another exemplary embodiment of the present disclosure;

[0049] Figure 8 is a flow chart of a control method for an adapter provided by another exemplary embodiment of the present disclosure.

[0050] In the figure:

[0051] 1-first Type-C interface; 2-second Type-C interface; 3-third Type-C interface; 4-processor; 5-converter circuit; 6-electronic device; 7-charging device; 10-first interface; 20-second interface; 30-power transmission circuit; 31-communication branch; 32-power supply branch; 40-processing circuit; 50-power management circuit; 60-overvoltage protection circuit; D1-first unidirectional device; D2-second unidirectional device; D3-third unidirectional device; R1-first resistor; R2-second resistor; GND-ground terminal; DN-first communication terminal; DP-second communication terminal; SBU1-first sideband use terminal; SBU2-second sideband use terminal; CC1-first configuration channel terminal; CC2-second configuration channel terminal; Vbus-power supply terminal; VCONN-additional power supply. DETAILED DESCRIPTION

[0052] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0053] At present, electronic devices communicate with wireless communication devices through built-in wireless communication modules to achieve wireless transmission of audio data. Since the manufacturers of wireless communication modules and wireless communication devices are often different, the wireless communication modules can only be compatible with the type of wireless communication devices, but cannot make the wireless communication devices perform at their best. For example, in the process of running a game through an electronic device, the audio data of the game will be transmitted to the wireless communication device with a high delay, resulting in the sound and picture being out of sync. Or, in the process of live broadcasting through an electronic device, the audio data received by the wireless communication device will be transmitted to the electronic device with a high delay, resulting in the sound and picture being out of sync. To solve the above problems, manufacturers will produce adapters that match the wireless communication devices after producing wireless communication devices to improve the quality of audio data transmission. Or, manufacturers will produce adapters that match the wireless communication devices according to the needs of wireless communication devices to improve the quality of audio data transmission. When manufacturers produce electronic devices, in order to maximize the use of internal circuit boards to develop new functions, the number of interfaces of electronic devices is relatively small. Due to the small number of interfaces, the charging device cannot be connected after the adapter is connected, resulting in the inability to simultaneously realize the charging and audio data interaction functions.

[0054] In the related art, a converter is provided, such as Figure 1 As shown, the adapter includes a first Type-C interface 1, a second Type-C interface 2, a third Type-C interface 3 and a processor 4. The first Type-C interface 1, the second Type-C interface 2 and the processor 4 are coupled. The first Type-C interface 1, the third Type-C interface 3 and the processor 4 are coupled. The first Type-C interface 1 is used to couple with an electronic device. The second Type-C interface 2 is used to couple with a first device. The third Type-C interface 3 is used to couple with a second device. By expanding the first Type-C interface 1 to the second Type-C interface 2 and the third Type-C interface 3, the coupling of multiple devices with the electronic device is achieved. However, this adapter has the problem of being inconvenient to use due to the large number of interfaces and the large size of the adapter. In addition, the adapter cannot realize the audio data interaction between the electronic device and the wireless communication device, and cannot realize the charging function, and the function of the adapter is single.

[0055] Based on this, the present disclosure provides a switching circuit, which can simultaneously realize the charging function and the audio data interaction function through the power transmission circuit and the processing circuit, enriching the function of the switching circuit, thereby improving the user experience. At the same time, since the switching circuit only includes two interfaces, the first interface and the second interface, the volume of the switching circuit is reduced.

[0056] like Figure 2 As shown, an exemplary embodiment of the present disclosure provides a switching circuit 5 , one end of the switching circuit 5 is coupled to the electronic device 6 , and the other end of the switching circuit 5 is coupled to the charging device 7 .

[0057] like Figure 3 As shown, the switching circuit includes a first interface 10, a second interface 20, a power transmission circuit 30 and a processing circuit 40. The first interface 10 is used to couple with an electronic device. The second interface 20 is used to couple with a charging device. The power transmission circuit 30 is coupled to both the first interface 10 and the second interface 20, and is used to control the charging device to charge the electronic device through the second interface 20 and the first interface 10. The processing circuit 40 is coupled to the first interface 10, and includes a wireless communication module for communicating with a wireless communication device, and is used to realize audio data interaction between the electronic device and the wireless communication device through the first interface 10 and the wireless communication module. Among them, the processing circuit 40 can receive audio data transmitted by the electronic device, process the audio data, and transmit it wirelessly to the wireless communication device. The processing circuit 40 can also receive audio data transmitted by the wireless communication device, process the audio data, and transmit it to the electronic device.

[0058] In this embodiment, the switching circuit includes a first interface, a second interface, a power transmission circuit and a processing circuit. The power transmission circuit is coupled to both the first interface and the second interface, and can control the charging device to charge the electronic device. The processing circuit is coupled to the first interface, and can realize the audio data interaction between the electronic device and the wireless communication device. Since the conversion circuit can charge the electronic device through the power transmission circuit and realize the wireless interaction of audio data through the processing circuit, the function of the switching circuit is enriched, thereby improving the user experience.

[0059] Exemplarily, the first interface 10 and the second interface 20 may be a Type-c interface, a Micro USB interface, a Lightning interface, etc. The first interface 10 may be the same as the second interface 20, or may be different from the second interface 20. The second interface 20 may be coupled to the charging device via a data cable. The power transmission circuit 30 may be a power delivery (PD) chip that can identify charging protocols such as power transmission protocols, quick charge (QC) protocols, and Mi Turbo Charge protocols. The processing circuit 40 may be a system-level (System On a Chip, SoC) chip.

[0060] Exemplarily, the wireless communication device may be a Bluetooth device, a Wireless Fidelity (WiFi) device, or the like.

[0061] In one embodiment, the processing circuit 40 is configured to interact with the wireless communication device for audio data in a low latency mode.

[0062] In this embodiment, by processing the circuit to interact with the wireless communication device for audio data in a low-latency mode, the delay of audio data transmission can be reduced to achieve audio and video synchronization, thereby improving the functionality of the switching circuit.

[0063] Exemplarily, in low-latency mode, the delay of audio data interaction can be 40ms, 45ms, 50ms, etc.

[0064] It is understood that the processing circuit 40 can be configured to transmit audio data with the wireless communication device in a standard mode. In the standard mode, the delay of the audio data interaction is higher than the delay of the interaction in the low-latency mode. In the standard mode, the delay of the audio data interaction can be 70ms, 80ms, 90ms, etc.

[0065] In one embodiment, if Figure 4As shown, the transfer circuit also includes a power management circuit 50. The power management circuit 50 is coupled to the first terminal of the first interface 10 and the processing circuit 40. The first terminal of the first interface 10 is used to transmit the power output from the electronic device to the power management circuit 50. The first terminal of the first interface 10 can be a power supply terminal VBUS.

[0066] In this embodiment, the electronic device can power the power management circuit through the first terminal of the first interface, thereby avoiding the power management circuit being unable to power the processing circuit when the charging device is not connected, thereby improving the reliability of the switching circuit.

[0067] Exemplarily, the power management circuit 50 may be a power management chip (Power Management IC, PMIC).

[0068] In one embodiment, the power management circuit 50 is also coupled to the second terminal of the first interface 10, and the second terminal of the first interface 10 is used to transmit the power output from the electronic device to the power management circuit 50. The second terminal of the first interface 10 can be the first configuration channel terminal CC1 or the second configuration channel terminal CC2. The power of the additional power supply VCONN can be transmitted from the electronic device to the power management circuit 50 through the second terminal of the first interface 10.

[0069] In this embodiment, the electronic device can power the power management circuit through the second terminal of the first interface, thereby avoiding the power management circuit being unable to power the processing circuit when the first terminal of the first interface is occupied, thereby improving the reliability of the switching circuit.

[0070] In one embodiment, the power management circuit 50 is also coupled to the first terminal of the second interface 20, and the first terminal of the second interface 20 is used to transmit the power output from the charging device to the power management circuit 50. The first terminal of the second interface 20 can be a power supply terminal VBUS.

[0071] In this embodiment, the charging device can power the power management circuit through the first terminal of the second interface, thereby avoiding the power management circuit being unable to power the processing circuit when the first terminal of the first interface is occupied, thereby improving the reliability of the switching circuit.

[0072] In one embodiment, the power transmission circuit 30 includes a communication branch 31 and a power supply branch 32. The first end of the communication branch 31 is coupled to the third terminal of the first interface 10, and the second end is coupled to the second terminal of the second interface 20, and is used to transmit the charging protocol and battery charging information with the electronic device through the third terminal of the first interface 10, and to transmit the charging protocol and battery charging information with the charging device through the second terminal of the second interface 20. The first end of the power supply branch 32 is coupled to the first terminal of the first interface 10, the second end is coupled to the first terminal of the second interface 20, and the third end is coupled to the power management circuit 50, and the power management circuit 50 is used to control the on and off of the power supply branch 32 through the third end of the power supply branch 32. The third terminal of the first interface 10 can be the first configuration channel terminal CC1 or the second configuration channel terminal CC2. The second terminal of the second interface 20 can be the first configuration channel terminal CC1 and the second configuration channel terminal CC2. The first terminal of the first interface 10 is also used to transmit the power output by the power supply branch 32 to the electronic device.

[0073] In this embodiment, the communication branch in the power transmission circuit can be used to transmit the charging protocol and battery charging information, identify the type of charging equipment and electronic equipment, and the battery charging information such as the voltage and current of the battery in the electronic equipment. Through the power supply branch in the power transmission circuit, the output voltage and current can be adjusted to control the charging process of the electronic equipment at different charging speeds. By controlling the charging process of the electronic equipment through the power transmission circuit, the electronic equipment can be charged and protected on the basis of reducing the charging time, thereby improving the reliability of the switching circuit.

[0074] Exemplarily, the communication branch 31 is coupled to the power supply branch 32 , and the power supply branch 32 controls the charging device to charge the electronic device through the second interface 20 and the first interface 10 according to the charging protocol and battery charging information transmitted by the communication branch 31 .

[0075] Exemplarily, the processing circuit 40 is coupled to both the first communication terminal DN and the second communication terminal DP of the first interface 10 to transmit audio data. The processing circuit 40 can perform wireless communication debugging with the wireless communication device.

[0076] In one embodiment, the switching circuit further includes a first unidirectional device D1 and a second unidirectional device D2. The first unidirectional device D1 is coupled between the first terminal of the second interface 20 and the power management circuit 50, and is used to make the first terminal of the second interface 20 unidirectionally conduct to the power management circuit 50. The second unidirectional device D2 is coupled between the first terminal of the first interface 10 and the power management circuit 50, and is used to make the first terminal of the first interface 10 unidirectionally conduct to the power management circuit 50.

[0077] In this embodiment, the first unidirectional device and the second unidirectional device are used to prevent the short circuit between the charging device and the first interface from causing damage to the charging device or the electronic device, thereby improving the reliability of the switching circuit.

[0078] In one embodiment, the switching circuit further includes a third unidirectional device D3 coupled between the second terminal of the first interface 10 and the power management circuit 50 to enable the second terminal of the first interface 10 to conduct unidirectionally to the power management circuit 50 .

[0079] In this embodiment, the third unidirectional device is used to prevent the short circuit between the charging device and the first interface from causing damage to the charging device or the electronic device, thereby improving the reliability of the switching circuit.

[0080] In one embodiment, the transfer circuit further includes an overvoltage protection circuit 60. A first end of the overvoltage protection circuit 60 is coupled to a first terminal of the second interface 20, and a second end of the overvoltage protection circuit 60 is coupled to a second end of the power supply branch 32 and the power management circuit 50, for overvoltage protection of the power transmission circuit 30 and the power management circuit 50.

[0081] In this embodiment, the overvoltage protection circuit is coupled to the power supply branch and the power management circuit to protect the power transmission circuit and the power management circuit to avoid damage to the switching circuit, thereby improving the reliability of the switching circuit.

[0082] Exemplarily, the overvoltage protection circuit 60 may include at least one transistor, which controls the connection between the first terminal of the second interface 20 and the power supply branch 32 and the power management circuit 50. The overvoltage protection circuit 60 may be controlled by the power transmission circuit 30 or the power management circuit 50.

[0083] Exemplarily, the first unidirectional device D1 , the second unidirectional device D2 , and the third unidirectional device D3 may be diodes, transistors, or the like.

[0084] Exemplarily, the switching circuit further includes a first resistor R1 and a second resistor R2. The first resistor R1 is coupled between the communication branch 31 and the ground terminal GND. The second resistor R2 is coupled between the second ends of the first unidirectional device D1, the second unidirectional device D2 and the third unidirectional device D3 and the ground terminal GND.

[0085] In one embodiment, if Figure 5-1 and 5-2As shown, the electronic device includes an additional power supply VCONN, and the additional power supply VCONN transmits electric energy through the second terminal of the first interface 10. When the charging device is not coupled to the second interface 20, the electronic device powers the power management circuit 50 through the first terminal of the first interface 10 and the second unidirectional device D2, the second terminal of the first interface 10 and the third unidirectional device D3, so that the power management circuit 50 can power the processing circuit 40 to interact with audio data between the wireless communication device and the electronic device. When the charging device is coupled to the second interface 20, the electronic device powers the power management circuit 50 through the second terminal of the first interface 10 and the third unidirectional device D3, so that the power management circuit 50 can power the processing circuit 40 to interact with audio data between the wireless communication device and the electronic device. The charging device charges the electronic device through the first terminal of the second interface 20, the overvoltage protection circuit 60, the power supply branch 32 of the power transmission circuit 30, and the first terminal of the first interface 10, and does not interfere with the power supply of the power management circuit 50. At this time, the communication branch 31 is used to transmit the charging protocol and battery charging information with the charging device, and to transmit the charging protocol and battery charging information with the electronic device.

[0086] In this embodiment, when the electronic device includes an additional power supply, the additional power supply of the electronic device can independently power the power management circuit through the second terminal of the first interface. When the charging device is not coupled to the second interface, the electronic device powers the power management circuit through two branches, the first terminal and the second terminal of the first interface, thereby improving the stability of the power supply of the power management circuit. When the charging device is coupled to the second interface, the electronic device powers the power management circuit through the second terminal of the first interface, and the power supply branch charges the electronic device through the first terminal of the first interface. By supplying power to the power management circuit and charging the electronic device through two independent branches, the power management circuit is not affected by the charging of the electronic device to prevent abnormal power supply of the processing circuit, thereby improving the reliability of the transfer circuit.

[0087] In one embodiment, if Figure 5-1 and 5-3As shown, the electronic device does not include an additional power supply VCONN. When the charging device is not coupled to the second interface 20, the electronic device powers the power management circuit 50 through the first terminal of the first interface 10 and the second unidirectional device D2, the second terminal of the first interface 10 and the third unidirectional device D3, so that the power management circuit 50 can power the processing circuit 40 to interact with audio data between the wireless communication device and the electronic device. When the charging device is coupled to the second interface 20, the charging device powers the power management circuit 50 through the first terminal of the second interface 20, the overvoltage protection circuit 60 and the first unidirectional device D1, so that the power management circuit 50 can power the processing circuit 40 to interact with audio data between the wireless communication device and the electronic device. The charging device also charges the electronic device through the first terminal of the second interface 20, the overvoltage protection circuit 60, the power supply branch 32 of the power transmission circuit 30 and the first terminal of the first interface 10, and does not interfere with the power supply of the power management circuit 50. At this time, the communication branch 31 is used to transmit the charging protocol and battery charging information with the charging device, and to transmit the charging protocol and battery charging information with the electronic device.

[0088] In this embodiment, when the electronic device does not include an additional power supply, the electronic device cannot use the additional power supply to power the power management circuit alone. When the charging device is not coupled to the second interface, the electronic device powers the power management circuit through two branches, the first terminal of the first interface and the second terminal, thereby improving the stability of the power supply of the power management circuit. When the charging device is coupled to the second interface, the charging device powers the power management circuit through the first terminal of the second interface, and the power supply branch charges the electronic device through the first terminal of the first interface. Since the power management circuit does not reuse the first terminal of the second interface for power supply, the power management circuit is not affected by the charging of the electronic device to prevent abnormal power supply of the processing circuit, thereby improving the reliability of the transfer circuit.

[0089] In one embodiment, the third terminal of the second interface 20, the power transmission circuit 30, and the processing circuit 40 are coupled via a bus. The bus may be an Inter-Integrated Circuit (IIC) bus, etc. The bus may be used to transmit data between the second interface 20, the power transmission circuit 30, and the processing circuit 40, and to search for addresses. The third terminal of the second interface 20 may be a first sideband use terminal SBU1 and a second sideband use terminal SBU2.

[0090] In this embodiment, since the second interface, the power transmission circuit and the processing circuit are coupled via a bus, data transmission and address search can be performed, thereby improving the reliability of the conversion circuit. Since the second interface, the power transmission circuit and the processing circuit are coupled using an integrated circuit bus, the coupling between the circuits is simplified, thereby reducing the volume of the switching circuit.

[0091] For example, Figure 4 As shown, the transfer circuit includes a first interface 10, a second interface 20, a power transmission circuit 30, a processing circuit 40, a power management circuit 50, an overvoltage protection circuit 60, a first unidirectional device D1, a second unidirectional device D2, a third unidirectional device D3, a first resistor R1 and a second resistor R2. The first interface 10 is used to couple with an electronic device. The second interface 20 is used to couple with a charging device. The power transmission circuit 30 includes a communication branch 31 and a power supply branch 32. The communication branch 31 is coupled to the first configuration channel terminal CC1 of the first interface 10, and is coupled to the first configuration channel terminal CC1 and the second configuration channel terminal CC2 of the second interface 20. The power supply branch 32 is coupled to the power supply terminal VBUS of the first interface 10. The processing circuit 40 is coupled to the first communication terminal DN and the second communication terminal DP of the first interface 10. The power management circuit 50 is coupled to the power supply branch 32 and the processing circuit 40. The first end of the overvoltage protection circuit 60 is coupled to the power supply terminal VBUS of the second interface 20, and the second end is coupled to the power supply branch 32 and the power management circuit 50. The first end of the first unidirectional device D1 is coupled to the second end of the overvoltage protection circuit 60. The first end of the second unidirectional device D2 is coupled to the power supply branch 32 and the power supply terminal VBUS of the first interface 10. The first end of the third unidirectional device D3 is coupled to the second configuration channel terminal CC2 of the first interface 10. The first resistor R1 is coupled between the communication branch 31 and the ground terminal GND. The second resistor R2 is coupled between the second ends of the first unidirectional device D1, the second unidirectional device D2 and the third unidirectional device D3 and the ground terminal GND. The first sideband use terminal SBU1 and the second sideband use terminal SBU2 of the second interface 20, the power transmission circuit 30 and the processing circuit 40 are coupled through the integrated circuit bus.

[0092] An exemplary embodiment of the present disclosure further provides a converter, and the converter includes the converter circuit as described above.

[0093] An exemplary embodiment of the present disclosure further provides a control method for an adapter, which can be applied to the above-mentioned circuit structure, such as Figure 6 As shown, the control method of the adapter includes:

[0094] S100: Control the adapter to perform audio data exchange between the electronic device and the wireless communication device.

[0095] S200: When the adapter is coupled to the charging device, control the charging device to charge the electronic device and maintain audio data interaction between the electronic device and the wireless communication device.

[0096] In this embodiment, by controlling the adapter, audio data can be exchanged between the electronic device and the wireless communication device. When the adapter is coupled to the charging device, the audio data exchange between the electronic device and the wireless communication device is maintained on the basis of controlling the charging device to charge the electronic device, thereby realizing the charging function and the audio data wireless transmission function. Since charging and audio data wireless transmission can be performed simultaneously, the functions of the adapter are enriched, thereby improving the user experience.

[0097] In one embodiment, if Figure 7 As shown, the step S100 of controlling the adapter to perform audio data interaction between the electronic device and the wireless communication device includes:

[0098] S110 , supplying power to the power management circuit.

[0099] S120, controlling the power management circuit to supply power to the processing circuit.

[0100] S130: Control the processing circuit to perform audio data exchange between the electronic device and the wireless communication device.

[0101] In this embodiment, after the power management circuit is powered by the electronic device or the charging device, the power management circuit is controlled to power the processing circuit so that the processing circuit can operate normally. The processing circuit is controlled to process and transmit audio data between the wireless communication device and the electronic device so that the audio data can be exchanged between the wireless communication device and the electronic device, thereby improving the functionality of the adapter.

[0102] In one embodiment, if Figure 8 As shown, controlling the charging device to charge the electronic device in step S200 includes:

[0103] S210: Control the power management circuit to perform charging management on the power transmission circuit.

[0104] S220: Control the power transmission circuit to charge the electronic device with the electric energy provided by the charging device.

[0105] In this embodiment, when the charging device is connected, the electronic device needs to be charged through the charging device, and the power management circuit is controlled to manage the charging of the power transmission circuit. The power transmission circuit is controlled to charge the electronic device according to the charging requirements of the electronic device with the power provided by the charging device, thereby increasing the charging speed and preventing damage to the electronic device. Since the adapter can charge the electronic device and wirelessly transmit audio data at the same time, the function of the adapter is enriched, thereby improving the user experience.

[0106] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims.

[0107] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0108] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A switching circuit, characterized in that: The switching circuit comprises: A first interface, the first interface is used to couple with an electronic device; a second interface, the second interface being used to couple with a charging device; a power transmission circuit, the power transmission circuit being coupled to both the first interface and the second interface, and the power transmission circuit being used to control the charging device to charge the electronic device through the second interface and the first interface; A processing circuit is coupled to the first interface, the processing circuit includes a wireless communication module for communicating with a wireless communication device, and the processing circuit is used to implement audio data interaction between the electronic device and the wireless communication device through the first interface and the wireless communication module.

2. The switching circuit according to claim 1, characterized in that: The processing circuit is configured to interact with the wireless communication device for the audio data in a low-latency mode.

3. The switching circuit according to claim 1, characterized in that: The switching circuit also includes: A power management circuit is coupled to the first terminal of the first interface and the processing circuit, and the first terminal of the first interface is used to transmit the electric energy output by the electronic device to the power management circuit.

4. The switching circuit according to claim 3, characterized in that: The power management circuit is also coupled to a second terminal of the first interface, and the second terminal of the first interface is used to transmit the electric energy output by the electronic device to the power management circuit; and / or, The power management circuit is also coupled to a first terminal of the second interface, and the first terminal of the second interface is used to transmit the electric energy output by the charging device to the power management circuit.

5. The switching circuit according to claim 4, characterized in that: The power transmission circuit comprises: a communication branch, wherein a first end of the communication branch is coupled to a third terminal of the first interface, and a second end of the communication branch is coupled to a second terminal of the second interface, and the communication branch is used to transmit a charging protocol and battery charging information to the electronic device through the third terminal of the first interface, and to transmit the charging protocol and the battery charging information to the charging device through the second terminal of the second interface; A power supply branch, wherein the first end of the power supply branch is coupled to the first terminal of the first interface, the second end of the power supply branch is coupled to the first terminal of the second interface, and the third end of the power supply branch is coupled to the power management circuit, and the power management circuit is used to control the on and off of the power supply branch through the third end of the power supply branch.

6. The switching circuit according to claim 5, characterized in that: The switching circuit also includes: A first unidirectional device, the first unidirectional device is coupled between the first terminal of the second interface and the power management circuit, and the first unidirectional device is used to make the first terminal of the second interface unidirectionally conductive to the power management circuit; A second unidirectional device is coupled between the first terminal of the first interface and the power management circuit, and is used to enable the first terminal of the first interface to conduct unidirectionally to the power management circuit.

7. The switching circuit according to claim 6, characterized in that: The switching circuit also includes: A third unidirectional device is coupled between the second terminal of the first interface and the power management circuit, and is used to enable the second terminal of the first interface to conduct unidirectionally toward the power management circuit.

8. The switching circuit according to claim 5, characterized in that: The switching circuit also includes: An overvoltage protection circuit, wherein a first end of the overvoltage protection circuit is coupled to a first terminal of the second interface, and a second end of the overvoltage protection circuit is coupled to a second end of the power supply branch and the power management circuit.

9. The switching circuit according to any one of claims 1 to 8, characterized in that: The third terminal of the second interface, the power transmission circuit and the processing circuit are coupled via a bus.

10. An adapter, characterized in that: The adapter comprises the switching circuit according to any one of claims 1 to 9.

11. A method for controlling an adapter, characterized in that: The control method of the adapter comprises: Controlling the adapter to perform audio data interaction between the electronic device and the wireless communication device; When the adapter is coupled to a charging device, the charging device is controlled to charge the electronic device and audio data interaction between the electronic device and the wireless communication device is maintained.

12. The control method of the adapter according to claim 11, characterized in that: The step of controlling the adapter to perform audio data interaction between the electronic device and the wireless communication device includes: Supply power to the power management circuit; Controlling the power management circuit to supply power to the processing circuit; The processing circuit is controlled to perform audio data exchange between the electronic device and the wireless communication device.

13. The control method of the adapter according to claim 11, characterized in that: The controlling the charging device to charge the electronic device comprises: Controlling the power management circuit to perform charging management on the power transmission circuit; The power transmission circuit is controlled to charge the electronic device with the electric energy provided by the charging device.

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