Switching circuit, switcher and control method of switcher

Abstract

This disclosure relates to an adapter circuit, an adapter, and a control method for the adapter. The adapter circuit includes: a first interface for coupling with an electronic device; a second interface for coupling with a charging device; a power transmission circuit coupled to both the first and second interfaces, used to control the charging device to charge the electronic device through the second and first interfaces; and a processing circuit coupled to the first interface, including a wireless communication module for communication with a wireless communication device, used to enable audio data interaction between the electronic device and the wireless communication device through the first interface and the wireless communication module. Because the adapter circuit can charge the electronic device through the power transmission circuit and enable wireless audio data interaction through the processing circuit, the functionality of the adapter circuit is enriched, thereby improving the user experience.

Description

Technical Field

[0001] This disclosure relates to the field of electronic equipment technology, and in particular to a switching circuit, a switching device, and a control method for the switching device. Background Technology

[0002] Currently, electronic devices communicate with other wireless communication devices via built-in wireless communication modules to achieve wireless transmission of audio data. However, incompatibility between the wireless communication module and the wireless communication device can affect the quality of audio data transmission. Adapters that match the wireless communication device are used to connect to the interface of the electronic device to improve the quality of audio data transmission. However, because these adapters have limited functionality, they cannot meet user needs, resulting in a poor user experience. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides a switching circuit, a switching device, and a control method for the switching device.

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

[0005] A first interface, the first interface being used for coupling with an electronic device;

[0006] The second interface is used for coupling with a charging device;

[0007] A power transmission circuit is coupled to both the first interface and the second interface, and the power transmission circuit is used to control the charging device to charge the electronic device through the second interface and the first interface.

[0008] The processing circuit is coupled to the first interface and includes a wireless communication module for communicating with a wireless communication device. The processing circuit is used to realize 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 this disclosure, the processing circuitry is configured to interact with the wireless communication device in a low-latency mode for the audio data exchange.

[0010] In some embodiments of this disclosure, the adapter circuit further includes:

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

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

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

[0014] In some embodiments of this 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. The communication branch is used to transmit charging protocol and battery charging information with the electronic device through the third terminal of the first interface, and to transmit the charging protocol and battery charging information with the charging device through the second terminal of the second interface.

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

[0017] In some embodiments of this disclosure, the adapter circuit further includes:

[0018] A 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 enable unidirectional conduction from the first terminal of the second interface 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 the second unidirectional device is used to enable unidirectional conduction from the first terminal of the first interface to the power management circuit.

[0020] In some embodiments of this disclosure, the adapter circuit further includes:

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

[0022] In some embodiments of this disclosure, the adapter circuit further includes:

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

[0024] In some embodiments of this 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 this disclosure, an adapter is provided, the adapter including the adapter circuit described above.

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

[0027] The adapter is used to control audio data exchange between electronic devices and wireless communication devices.

[0028] When the adapter is coupled to the charging device, it controls the charging device to charge the electronic device and maintains audio data interaction between the electronic device and the wireless communication device.

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

[0030] Provide power to the power management circuit;

[0031] The power management circuit controls the power supply to the processing circuit;

[0032] The processing circuit controls the audio data interaction between the electronic device and the wireless communication device.

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

[0034] The power management circuit controls the charging of the power transmission circuit.

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

[0036] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0037] The adapter 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 and second interfaces and can control the charging device to charge the electronic device. The processing circuit is coupled to the first interface and enables audio data exchange between the electronic device and the wireless communication device. Because the adapter circuit can charge the electronic device through the power transmission circuit and enable wireless audio data exchange through the processing circuit, its functionality is enriched, thereby improving the user experience.

[0038] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form 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 This is a schematic diagram of an adapter.

[0041] Figure 2 This is a schematic diagram illustrating an application scenario of the adapter circuit provided in an exemplary embodiment of this disclosure;

[0042] Figure 3 This is a schematic diagram of the structure of an adapter circuit provided in an exemplary embodiment of this disclosure;

[0043] Figure 4 This is a schematic diagram of the structure of an adapter circuit provided in another exemplary embodiment of this disclosure;

[0044] Figure 5-1 This is a schematic diagram of the structure of an adapter circuit provided in another exemplary embodiment of this disclosure;

[0045] Figure 5-2 This is a schematic diagram of the structure of an adapter circuit provided in another exemplary embodiment of this disclosure;

[0046] Figure 5-3 This is a schematic diagram of the structure of an adapter circuit provided in another exemplary embodiment of this disclosure;

[0047] Figure 6 This is a flowchart of a control method for an adapter provided in an exemplary embodiment of this disclosure;

[0048] Figure 7 This is a flowchart of a control method for an adapter provided in another exemplary embodiment of this disclosure;

[0049] Figure 8 This is a flowchart of a control method for an adapter provided in another exemplary embodiment of this disclosure.

[0050] In the picture:

[0051] 1-First Type-C interface; 2-Second Type-C interface; 3-Third Type-C interface; 4-Processor; 5-Adapter 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 usage terminal; SBU2-Second sideband usage terminal; CC1-First configuration channel terminal; CC2-Second configuration channel terminal; Vbus-Power supply terminal; VCONN-Additional power supply. Detailed Implementation

[0052] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the 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 of the associated listed items.

[0053] Currently, electronic devices communicate with each other via built-in wireless communication modules to achieve wireless audio data transmission. However, because wireless communication modules and devices are often manufactured by different companies, the wireless communication module is only compatible with the type of wireless communication device and cannot allow the device to perform at its optimal level. For example, during gameplay on an electronic device, the game's audio data is transmitted to the wireless communication device with significant latency, resulting in audio-visual desynchronization. Similarly, during live streaming on an electronic device, the audio data received by the wireless communication device is transmitted to the electronic device with significant latency, also causing audio-visual desynchronization. To address these issues, manufacturers often produce adapters to match the wireless communication devices after manufacturing them, thereby improving the quality of audio data transmission. Alternatively, manufacturers may produce adapters specifically designed for wireless communication devices to improve audio data transmission quality. Furthermore, to maximize the use of internal circuit boards for developing new functions, electronic devices typically have a limited number of interfaces. This limited number of interfaces means that charging devices cannot be connected when an adapter is used, preventing simultaneous charging and audio data interaction.

[0054] In related technologies, an adapter 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 together. The first Type-C interface 1 is used for coupling with an electronic device. The second Type-C interface 2 is used for coupling with a first device. The third Type-C interface 3 is used for coupling with a second device. By expanding the first Type-C interface 1 into a second Type-C interface 2 and a third Type-C interface 3, coupling multiple devices with electronic devices can be achieved. However, this adapter is bulky due to the large number of interfaces, making it inconvenient to use. Furthermore, this adapter cannot enable audio data interaction between electronic devices and wireless communication devices, nor can it provide charging functionality; its function is limited.

[0055] Based on this, this disclosure provides an adapter circuit that, through a power transmission circuit and a processing circuit, can simultaneously realize charging and audio data interaction functions, enriching the functionality of the adapter circuit and thus improving the user experience. At the same time, since the adapter circuit only includes two interfaces, a first interface and a second interface, its size is reduced.

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

[0057] like Figure 3 As shown, the adapter 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 for coupling with an electronic device. The second interface 20 is used for coupling 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 communication with a wireless communication device, 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. Specifically, the processing circuit 40 can receive audio data transmitted by the electronic device, process the audio data, and wirelessly transmit it 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 adapter 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 and second interfaces and can control the charging device to charge the electronic device. The processing circuit is coupled to the first interface and can realize audio data interaction between the electronic device and the wireless communication device. Since the adapter circuit can charge the electronic device through the power transmission circuit and realize wireless audio data interaction through the processing circuit, the functionality of the adapter circuit is enriched, thereby improving the user experience.

[0059] For example, the first interface 10 and the second interface 20 can be a Type-C interface, a Micro USB interface, a Lightning interface, etc. The first interface 10 can be the same as or different from the second interface 20. The second interface 20 can be coupled to the charging device via a data cable. The power delivery circuit 30 can be a power delivery (PD) chip, capable of recognizing charging protocols such as power delivery protocols, Quick Charge (QC) protocols, and Mi Turbo Charge protocols. The processing circuit 40 can be a system-on-a-chip (SoC).

[0060] For example, a wireless communication device can be a Bluetooth device, a Wireless Fidelity (WiFi) device, etc.

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

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

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

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

[0065] In one embodiment, such as Figure 4As shown, the adapter 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 electrical energy 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 first terminal of the first interface enables the electronic device to supply power to the power management circuit, thus avoiding the power management circuit being unable to supply power to the processing circuit when no charging device is connected, thereby improving the reliability of the adapter circuit.

[0067] For example, the power management circuit 50 can be a power management IC (PMIC).

[0068] In one embodiment, the power management circuit 50 is also coupled to a second terminal of the first interface 10, which is used to transmit electrical energy output from the electronic device to the power management circuit 50. The second terminal of the first interface 10 can be a first configuration channel terminal CC1 or a second configuration channel terminal CC2. Electrical energy from the auxiliary 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 second terminal of the first interface enables the electronic device to supply power to the power management circuit, thus avoiding the power management circuit being unable to supply power to the processing circuit when the first terminal of the first interface is occupied, thereby improving the reliability of the adapter circuit.

[0070] In one embodiment, the power management circuit 50 is also coupled to a first terminal of the second interface 20, which is used to transmit electrical energy 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 supply power to the power management circuit through the first terminal of the second interface, which avoids the power management circuit being unable to supply power to the processing circuit when the first terminal of the first interface is occupied, thereby improving the reliability of the adapter 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. It is used to transmit charging protocols and battery charging information with the electronic device through the third terminal of the first interface 10, and to transmit charging protocols 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 a power management circuit 50. The power management circuit 50 is used to control the on / off state of the power supply branch 32 through the third terminal of the power supply branch 32. The third terminal of the first interface 10 can be either a first configuration channel terminal CC1 or a second configuration channel terminal CC2. The second terminal of the second interface 20 can also be either the first configuration channel terminal CC1 or the second configuration channel terminal CC2. The first terminal of the first interface 10 is also used to transmit electrical energy output from the power supply branch 32 to the electronic device.

[0073] In this embodiment, the communication branch in the power transmission circuit enables the transmission of charging protocols and battery charging information, identifying the types of charging and electronic devices, as well as battery charging information such as voltage and current. The power supply branch in the power transmission circuit allows adjustment of the output voltage and current to control the charging process of the electronic device at different charging speeds. Controlling the charging process of the electronic device through the power transmission circuit reduces charging time and provides charging protection, thereby improving the reliability of the switching circuit.

[0074] For example, the communication branch 31 is coupled to the power supply branch 32. 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] For example, the processing circuit 40 is coupled to both the first communication terminal DN and the second communication terminal DP of the first interface 10 for audio data transmission. The processing circuit 40 can perform wireless communication debugging with wireless communication devices.

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

[0077] In this embodiment, the first unidirectional device and the second unidirectional device prevent short circuits between the charging device and the first interface from damaging the charging device or electronic device, thereby improving the reliability of the adapter circuit.

[0078] In one embodiment, the adapter circuit further includes a third unidirectional device D3. The third unidirectional device D3 is coupled between the second terminal of the first interface 10 and the power management circuit 50, and is used to enable unidirectional conduction from the second terminal of the first interface 10 to the power management circuit 50.

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

[0080] In one embodiment, the adapter circuit further includes an overvoltage protection circuit 60. The first terminal of the overvoltage protection circuit 60 is coupled to the first terminal of the second interface 20, and the second terminal is coupled to the second terminal of the power supply branch 32 and the power management circuit 50, for providing overvoltage protection for 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 from damage to the switching circuit, thereby improving the reliability of the switching circuit.

[0082] For example, the overvoltage protection circuit 60 may include at least one transistor that controls the switching 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] For example, the first unidirectional device D1, the second unidirectional device D2, and the third unidirectional device D3 can be diodes or transistors, etc.

[0084] For example, 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 terminals 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, such as Figure 5-1 and 5-2As shown, the electronic device includes an auxiliary power supply VCONN, which transmits power through the second terminal of the first interface 10. When the charging device is not coupled to the second interface 20, the electronic device supplies power to 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, enabling the power management circuit 50 to supply power to the processing circuit 40 for audio data interaction between the wireless communication device and the electronic device. When the charging device is coupled to the second interface 20, the electronic device supplies power to the power management circuit 50 through the second terminal of the first interface 10 and the third unidirectional device D3, enabling the power management circuit 50 to supply power to the processing circuit 40 for audio data interaction 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 without interfering with the power supply to the power management circuit 50. At this time, the communication branch 31 is used to transmit charging protocols and battery charging information with the charging device, and to transmit charging protocols and battery charging information with the electronic device.

[0086] In this embodiment, when the electronic device includes an auxiliary power supply, the auxiliary power supply 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, improving the stability of the power supply to 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 powering 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, preventing abnormal power supply to the processing circuit and thus improving the reliability of the adapter circuit.

[0087] In one embodiment, such as Figure 5-1 and 5-3As shown, the electronic device does not include an auxiliary power supply VCONN. When the charging device is not coupled to the second interface 20, the electronic device supplies power to 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, enabling the power management circuit 50 to supply power to the processing circuit 40 for audio data interaction between the wireless communication device and the electronic device. When the charging device is coupled to the second interface 20, the charging device supplies power to 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, enabling the power management circuit 50 to supply power to the processing circuit 40 for audio data interaction 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, without interfering with the power supply to the power management circuit 50. At this time, the communication branch 31 is used to transmit charging protocols and battery charging information with the charging device and with the electronic device.

[0088] In this embodiment, when the electronic device does not include an auxiliary power supply, it cannot use the auxiliary power supply to independently power the power management circuit. 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, improving the stability of the power supply to 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, it is unaffected by the charging of the electronic device, preventing abnormal power supply to the processing circuit and thus improving the reliability of the adapter 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 can be an Inter-Integrated Circuit (IIC) bus, etc. Data transmission and address lookup can be achieved between the second interface 20, the power transmission circuit 30, and the processing circuit 40 via the bus. The third terminal of the second interface 20 can be a first sideband usage terminal SBU1 and a second sideband usage terminal SBU2.

[0090] In this embodiment, since the second interface, power transmission circuit, and processing circuit are coupled via a bus, data transmission and address lookup are possible, thereby improving the reliability of the conversion circuit. Furthermore, the use of an integrated circuit bus for coupling between the second interface, power transmission circuit, and processing circuit simplifies the coupling between circuits, thus reducing the size of the adapter circuit.

[0091] For example, such as Figure 4 As shown, the adapter 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 for coupling with an electronic device. The second interface 20 is used for coupling 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 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 both the first communication terminal DN and the second communication terminal DP of the first interface 10. The power management circuit 50 is coupled to both the power supply branch 32 and the processing circuit 40. The first terminal of the overvoltage protection circuit 60 is coupled to the power supply terminal VBUS of the second interface 20, and the second terminal is coupled to both the power supply branch 32 and the power management circuit 50. The first terminal of the first unidirectional device D1 is coupled to the second terminal of the overvoltage protection circuit 60. The first terminal of the second unidirectional device D2 is coupled to both the power supply branch 32 and the power supply terminal VBUS of the first interface 10. The first terminal 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 terminals 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 usage terminal SBU1 and the second sideband usage terminal SBU2 of the second interface 20, the power transmission circuit 30, and the processing circuit 40 are coupled via an integrated circuit bus.

[0092] An exemplary embodiment of this disclosure also provides an adapter that includes the adapter circuit described above.

[0093] An exemplary embodiment of this disclosure also provides a control method for an adapter, which can be applied, for example, to the circuit structure described above, such as... Figure 6 As shown, the control method of the adapter includes:

[0094] S100, the control adapter enables audio data exchange between electronic devices and wireless communication devices.

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

[0096] In this embodiment, by controlling the adapter, audio data interaction between electronic devices and wireless communication devices can be achieved. When the adapter is coupled to a charging device, it maintains audio data interaction between the electronic device and the wireless communication device while controlling the charging device to charge the electronic device, thus realizing both charging and wireless audio data transmission functions. Because it can simultaneously perform charging and wireless audio data transmission, the adapter's functionality is enriched, thereby improving the user experience.

[0097] In one embodiment, such as Figure 7 As shown, the control adapter in step S100 enables audio data interaction between the electronic device and the wireless communication device, including:

[0098] S110 supplies power to the power management circuit.

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

[0100] S130, the control processing circuit performs audio data interaction between electronic devices and wireless communication devices.

[0101] In this embodiment, after the power management circuit is powered by an electronic device or a charging device, the power management circuit is controlled to power the processing circuit, enabling the processing circuit to operate normally. The control processing circuit processes and transmits audio data between the wireless communication device and the electronic device, enabling audio data to interact between the wireless communication device and the electronic device, thereby improving the functionality of the adapter.

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

[0103] S210, the power management circuit controls the charging of the power transmission circuit.

[0104] S220, Control power transmission circuit to charge electronic equipment with electrical energy provided by charging equipment.

[0105] In this embodiment, after connecting to a charging device, the electronic device needs to be charged via the charging device. The power management circuit controls the charging of the power transmission circuit. The power transmission circuit uses the electrical energy provided by the charging device to charge the electronic device according to its charging needs, improving charging speed while preventing damage to the electronic device. Since the adapter can simultaneously charge the electronic device and wirelessly transmit audio data, its functionality is enriched, thereby improving the user experience.

[0106] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0107] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0108] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A switching circuit, characterized in that, The adapter circuit includes: A first interface, the first interface being used for coupling with an electronic device; The second interface is used for coupling with a charging device; A power transmission circuit is coupled to both the first interface and the second interface, and the power transmission circuit is used to control the charging device to charge the electronic device through the second interface and the first interface. The processing circuit is coupled to the first interface and includes a wireless communication module for communicating with a wireless communication device. The processing circuit is used to realize audio data interaction between the electronic device and the wireless communication device through the first interface and the wireless communication module. A power management circuit is coupled to the first terminal and the second terminal of the first interface as well as the processing circuit. The first terminal of the first interface is used to transmit the electrical energy output by the electronic device to the power management circuit, and the second terminal of the first interface is used to transmit the electrical energy of the additional power supply in the electronic device to the power management circuit. The first terminal of the first interface is the power supply terminal; When the charging device is coupled to the second interface, the charging device charges the electronic device through the first terminal of the first interface, and the electronic device supplies power to the power management circuit through the second terminal of the first interface.

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

3. The adapter circuit according to claim 2, characterized in that, The power management circuit is also coupled to the first terminal of the second interface, which is used to transmit electrical energy output by the charging device to the power management circuit.

4. The adapter circuit according to claim 3, characterized in that, The power transmission circuit includes: 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. The communication branch is used to transmit charging protocol and battery charging information with the electronic device through the third terminal of the first interface, and to transmit the charging protocol and battery charging information with the charging device through the second terminal of the second interface. A power supply branch, wherein a first end of the power supply branch is coupled to a first terminal of the first interface, a second end of the power supply branch is coupled to a first terminal of the second interface, and a third end of the power supply branch is coupled to the power management circuit, the power management circuit being used to control the on / off state of the power supply branch through the third end of the power supply branch.

5. The adapter circuit according to claim 4, characterized in that, The adapter circuit also includes: A 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 enable unidirectional conduction from the first terminal of the second interface 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 the second unidirectional device is used to enable unidirectional conduction from the first terminal of the first interface to the power management circuit.

6. The adapter circuit according to claim 5, characterized in that, The adapter circuit also includes: A third unidirectional device is coupled between the second terminal of the first interface and the power management circuit, and the third unidirectional device is used to enable unidirectional conduction from the second terminal of the first interface to the power management circuit.

7. The adapter circuit according to claim 4, characterized in that, The adapter circuit also includes: An overvoltage protection circuit is provided, wherein the first end of the overvoltage protection circuit is coupled to the first terminal of the second interface, and the second end of the overvoltage protection circuit is coupled to the second end of the power supply branch and the power management circuit.

8. The adapter circuit according to any one of claims 1 to 7, characterized in that, The third terminal of the second interface, the power transmission circuit, and the processing circuit are coupled together via a bus.

9. An adapter, characterized in that, The adapter includes the adapter circuit as described in any one of claims 1 to 8.

10. A control method for an adapter, used in the adapter as described in claim 9, characterized in that, The control method for the adapter includes: The adapter is used to control audio data exchange between electronic devices and wireless communication devices. When the adapter is coupled to the charging device, it controls the charging device to charge the electronic device and maintains audio data interaction between the electronic device and the wireless communication device.

11. The control method for the adapter according to claim 10, characterized in that, The control of the adapter to perform audio data interaction between the electronic device and the wireless communication device includes: Provide power to the power management circuit; The power management circuit controls the power supply to the processing circuit; The processing circuit controls the audio data interaction between the electronic device and the wireless communication device.

12. The control method for the adapter according to claim 10, characterized in that, The control of the charging device to charge the electronic device includes: The power management circuit controls the charging of the power transmission circuit. The power transmission circuit is controlled to charge the electronic device with the electrical energy provided by the charging device.

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