CN215642680U - One-to-many data line circuit and data line - Google Patents
One-to-many data line circuit and data line Download PDFInfo
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- CN215642680U CN215642680U CN202122092021.9U CN202122092021U CN215642680U CN 215642680 U CN215642680 U CN 215642680U CN 202122092021 U CN202122092021 U CN 202122092021U CN 215642680 U CN215642680 U CN 215642680U
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Abstract
The application provides a drag multiple data line circuit and data line, this a drag multiple data line circuit includes: the input circuit is used for accessing power supply equipment; the TYPE-C terminal output circuit, the micro terminal output circuit and the lighting terminal output circuit are respectively used for charging or data transmission of TYPE-C terminal equipment, micro terminal equipment and lighting terminal equipment; a transmission circuit selectively connecting the input circuit to the plurality of terminal output circuits, respectively; a master control circuit; the output detection circuit comprises a lighting terminal authentication circuit, the lighting terminal authentication circuit is respectively connected with the lighting terminal output circuit and the main control circuit, when the target output circuit is the lighting terminal output circuit, the lighting terminal authentication circuit is conducted, and the main control circuit detects an authentication success signal sent by the lighting terminal authentication circuit and then determines that the target output circuit is the lighting terminal output circuit. The application can realize accurate authentication of the lighting terminal equipment, and is convenient for timely conducting a path between the lighting terminal equipment and the power supply.
Description
Technical Field
The application belongs to the technical field of data lines, and particularly relates to a one-to-many data line circuit and a data line.
Background
With the continuous development of mobile phone technology and internet technology, people have more and more precise and diversified requirements on mobile phones, and people also have more and more requirements on peripheral products of mobile phones, such as earphones, charging equipment, data transmission equipment and the like.
Along with the increasingly powerful functions of mobile phones, the dependence and the use frequency of people on the mobile phones are higher and higher, the electric quantity of the mobile phones is consumed too fast and needs to be supplemented in time, and existing products around the mobile phones cannot meet certain requirements of people, wherein the dependence and the requirement gap on charging equipment are particularly obvious. Most of the existing charging wires are charged slowly, only one input is output all the way, and the charging or data transmission requirements of a plurality of devices cannot be met.
Therefore, a circuit and a data line for multiple data lines are needed to solve the problem of fast charging and data transmission of multiple devices simultaneously.
Disclosure of Invention
The application provides a one drags many data line circuit and data line, can realize the quick charge and the data transmission of a plurality of equipment simultaneously.
An embodiment of a first aspect of the present application provides a multi-data line circuit, including:
the input circuit is used for accessing power supply equipment;
the system comprises a plurality of terminal output circuits, a plurality of terminal output circuits and a plurality of terminal output circuits, wherein the terminal output circuits comprise a TYPE-C terminal output circuit, a micro terminal output circuit and a lighting terminal output circuit, and the terminal output circuits are respectively used for charging or data transmission of TYPE-C terminal equipment, micro terminal equipment and lighting terminal equipment;
a transmission circuit selectively connecting the input circuit with a plurality of terminal output circuits, respectively;
a master control circuit;
the output detection circuit comprises a lighting terminal authentication circuit, the lighting terminal authentication circuit is respectively connected with the lighting terminal output circuit and the main control circuit, when the target output circuit is the lighting terminal output circuit, the lighting terminal authentication circuit is conducted, and the main control circuit detects that the authentication success signal sent by the lighting terminal authentication circuit determines that the target output circuit is the lighting terminal output circuit.
Optionally, the transmission circuit includes a power supply transmission circuit and a data transmission circuit, and the master control circuit is connected to the input circuit, the terminal output circuit, the power supply transmission circuit, the data transmission circuit, and the output detection circuit, respectively, and configured to:
when the target output circuit comprises one circuit, controlling the power supply transmission circuit to be connected and the data transmission circuit to be disconnected, so that the target output circuit charges the terminal equipment in a first mode; when the target output circuit comprises two or more than two, controlling the power supply transmission circuit to be conducted, and enabling the target output circuit to charge the terminal equipment in a second mode; the first mode charging is faster than the second mode charging.
Optionally, if the power supply device is a computer, the master control circuit detects that the computer is connected with the input circuit through a USB-a interface, and controls the power supply transmission circuit and the data transmission circuit to be both turned on, so that the target output circuit is respectively turned on with the input circuit through the power supply transmission circuit and the data transmission circuit, and the terminal device is charged in the second mode;
if the power supply equipment is an adapter power supply, when the target output circuit comprises one circuit, the master control circuit controls the power supply transmission circuit and the data transmission circuit to be conducted, so that the target output circuit is respectively conducted with the input circuit through the power supply transmission circuit and the data transmission circuit, and the terminal equipment is charged in the first mode; when the target output circuits comprise two circuits, the master control circuit controls the power supply transmission circuit to be switched on, the data transmission circuits are switched off, the target output circuit is switched on with the input circuit through the power supply transmission circuit, and the second mode charging is carried out on a plurality of terminal devices.
Optionally, the output detection circuit further includes a load access detection circuit, the load access detection circuit includes a TYPE-C access detection circuit and a micro access detection circuit, the TYPE-C access detection circuit is respectively connected to the TYPE-C terminal output circuit and the main control circuit, and is configured to detect whether the TYPE-C terminal output circuit is connected to a terminal device; the micro access detection circuit is respectively connected with the micro terminal output circuit and the master control circuit and used for detecting whether the micro terminal output circuit is connected with the terminal equipment.
Optionally, the lighting terminal authentication circuit includes a first chip and a second chip connected in series, where one end of the first chip is connected to the main control circuit, and the other end of the first chip is connected to the second chip; the second chip is also connected with the lighting terminal output circuit.
Optionally, a diode is disposed between the first chip and the lighting terminal output circuit, and the diode is turned on when the current is in the direction from the lighting terminal output circuit to the first chip.
Optionally, the lighting terminal authentication circuit further includes a voltage stabilizing circuit, one end of the voltage stabilizing circuit is grounded, and the other end of the voltage stabilizing circuit is connected to a line between the first chip and the lighting terminal output circuit.
Optionally, the main control circuit includes a control circuit and a control power circuit, and the control circuit is connected to the power supply transmission circuit, the data transmission circuit, and the output detection circuit respectively; the control power supply circuit is connected with the input circuit and used for supplying power to the control circuit.
Optionally, the control circuit includes a third chip and a fourth chip, and the third chip is connected to the data transmission circuit respectively;
the fourth chip is respectively connected with the input circuit, the power supply transmission circuit, the data transmission circuit and the output detection circuit, and is used for controlling the selective connection between the data transmission circuit and the plurality of terminal output circuits and determining the current target output circuit according to the output detection circuit.
Optionally, the current detection circuit is connected to the output circuit and the fourth chip, and the fourth chip is further capable of detecting a current of a current target output circuit according to the current detection circuit, and starting an over-current protection program when the detected current is greater than or equal to a first threshold.
Optionally, the protection circuit further includes a voltage detection circuit, the voltage detection circuit is connected to the terminal output circuit and the fourth chip, and the fourth chip is further capable of detecting a current voltage of the target output circuit according to the voltage detection circuit and starting an overvoltage protection program when the detected voltage is greater than or equal to a second threshold.
Optionally, each terminal output circuit comprises a MOS transistor.
Optionally, the load access detection circuit comprises a TYPE-C access detection circuit, each of which comprises an NMOS transistor or a 0 ohm resistor.
Embodiments of a second aspect of the present application provide a split multiple data line, including the split multiple data line circuit of the first aspect.
The technical scheme provided in the embodiment of the application at least has the following technical effects or advantages:
the multi-data line circuit provided by the embodiment of the application comprises an input circuit, a transmission circuit, a plurality of terminal output circuits, a main control circuit and a lighting terminal authentication circuit, wherein the lighting terminal authentication circuit is respectively connected with the lighting terminal output circuit and the main control circuit, when the target output circuit is the lighting terminal output circuit, the lighting terminal authentication circuit is conducted, the main control circuit detects that the authentication success signal sent by the lighting terminal authentication circuit is determined, the target output circuit is the lighting terminal output circuit, so that the accurate authentication of the lighting terminal equipment can be realized, and the direct connection with a passage between the lighting terminal equipment and a power supply is facilitated.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings.
In the drawings:
FIG. 1 is a block diagram of a multi-drop data line circuit according to an embodiment of the present disclosure;
FIG. 2 illustrates a schematic circuit diagram of a multi-drop data line circuit according to an embodiment of the present application;
FIG. 3 is an enlarged schematic diagram of an input circuit in the embodiment of the present application;
fig. 4 is an enlarged schematic structural diagram of a terminal output circuit, a power supply transmission circuit and an output detection circuit in the embodiment of the present application;
fig. 5 is an enlarged schematic structural diagram of a lighting terminal authentication circuit in the embodiment of the present application;
FIG. 6 is an enlarged schematic diagram of a main control circuit in the embodiment of the present application;
fig. 7 is an enlarged schematic diagram of a data transmission circuit in the embodiment of the present application;
FIG. 8 is a schematic diagram illustrating an enlarged structure of a current detection circuit according to an embodiment of the present disclosure
Fig. 9 shows an enlarged schematic structural diagram of the voltage detection circuit in the embodiment of the present application.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
A multi-data line circuit and data lines according to embodiments of the present application are described below with reference to the accompanying drawings. The data line circuit and the data line are provided with two transmission circuits and a plurality of terminal output circuits, when only one terminal output circuit is connected with terminal equipment, the two transmission circuits can be adopted to carry out quick power supply or data transmission on the terminal output circuit; when two or more terminal output circuits are connected with the terminal equipment at the same time, only one transmission circuit is adopted to supply power to each terminal output circuit. Thus, quick charging or data transmission to one terminal device and ordinary charging to a plurality of terminal devices at the same time can be realized.
As shown in fig. 1 (a part of connecting lines and components are omitted, and specifically, connecting lines labeled the same may be connected according to labels of the lines shown in the figure), the multi-data line circuit provided in the embodiment of the present application includes an input circuit, a plurality of terminal output circuits, a transmission circuit, an output detection circuit, and a main control circuit, where the input circuit is an input terminal of the multi-data line circuit and is used for accessing a power supply device (such as a computer or an adapter power supply); the plurality of terminal output circuits are output ends of the multi-data-line circuit, are used for connecting external terminal equipment, and comprise TYPE-C terminal output circuits, micro terminal output circuits and lighting terminal output circuits, and are respectively used for charging or data transmission of the TYPE-C terminal equipment, the micro terminal equipment and the lighting terminal equipment; the transmission circuit selectively connects the input circuit with the plurality of terminal output circuits respectively; the output detection circuit is used for detecting a current target output circuit, and the target output circuit is at least one of a plurality of terminal output circuits; the output detection circuit comprises a lighting terminal authentication circuit, the lighting terminal authentication circuit is respectively connected with the lighting terminal output circuit and the main control circuit, when the target output circuit is the lighting terminal output circuit, the lighting terminal authentication circuit is conducted, and the main control circuit detects that the authentication success signal sent by the lighting terminal authentication circuit determines that the target output circuit is the lighting terminal output circuit.
The embodiment of the application provides a drags multiple data line circuit, including input circuit, transmission circuit, a plurality of terminal output circuit, master control circuit and lighting terminal authentication circuit, lighting terminal authentication circuit respectively with lighting terminal output circuit with master control circuit connects, works as when target output circuit is lighting terminal output circuit, makes lighting terminal authentication circuit switches on, master control circuit detects the signal is successful in the authentication that lighting terminal authentication circuit sent then confirms target output circuit is lighting terminal output circuit, so, can realize the accurate authentication to lighting terminal equipment, be convenient for in time lead with the passageway between lighting terminal equipment and the power.
As shown in fig. 2 and 3, the input circuit 10 may include an input chip, and the input chip may have a plurality of pins for connection, and each pin may be connected to the transmission circuit and the main control circuit 60, respectively, for inputting power to each circuit. It should be noted that, in this embodiment, the interface form of the input circuit is not specifically limited, and may be a TYPE-C input interface or a USB input interface, as long as the input of the power supply can be realized.
As shown in fig. 2 and 4, the transmission circuit includes a power supply transmission circuit 30 and a data transmission circuit 40, and the power supply transmission circuit 30 is respectively connectable to the input circuit 10 and the plurality of terminal output circuits 20, and is mainly used for transmitting power to the terminal output circuits 20. Similarly, as shown in fig. 2, the data transmission circuit 40 may be connected to the input circuit 10 and the plurality of terminal output circuits 20, respectively, and may transmit electric power to the terminal output circuits 20 or may transmit data to the terminal output circuits 20. And the power supply transmission circuit 30 and the data transmission circuit 40 are also respectively connected to the main control circuit 60, and are configured to receive an instruction sent by the main control circuit 60.
The target output circuit can be understood as a terminal output circuit which is currently connected with the terminal device, when the target output circuit includes one, the main control circuit 60 controls the power supply transmission circuit 30 to be switched on, and the data transmission circuit 40 to be switched off, so that the target output circuit charges the terminal device in the first mode; when the target output circuit includes two or more than two, the main control circuit 60 controls the power transmission circuit 30 to be turned on, so that the target output circuit charges the terminal device in the second mode. The first mode is charged at a rate greater than the second mode.
The first mode can be understood as a fast charging mode, and the second mode can be understood as a normal charging mode, i.e., the charging speed in the first mode is greater than that in the second mode. The first mode and the second mode only indicate how fast the charging is, and are not limited to a certain charging process or charging method, that is, to a certain circuit conduction method.
Specifically, if the power supply device is a computer, and the main control circuit 60 detects that the computer is connected to the input circuit through the USB-a interface, it controls both the power supply transmission circuit 30 and the data transmission circuit 40 to be turned on, so that the target output circuit is respectively turned on with the input circuit through the power supply transmission circuit 30 and the data transmission circuit 40, and the terminal device is charged in the second mode. At this time, since the computer generally supplies a low voltage, no matter the target output circuit includes several, even if the power transmission circuit 30 and the data transmission circuit 40 are both turned on, the normal burst mode is still used when the terminal device is charged.
If the power supply device is an adapter power supply, when the target output circuit includes one, the main control circuit 60 controls the power supply transmission circuit 30 and the data transmission circuit 40 to be conducted, so that the target output circuit is respectively conducted with the input circuit through the power supply transmission circuit 30 and the data transmission circuit 40, and the adapter power supply can provide higher voltage, so that the terminal device is charged in the first mode with higher charging speed. When the number of the target output circuits is two, the main control circuit 60 controls the power transmission circuit 30 to be turned on, and the data transmission circuit 40 is turned off, so that the target output circuit is turned on with the input circuit through the power transmission circuit 30, and since the plurality of terminal devices share the power supply voltage, the plurality of terminal devices are respectively charged in the second mode with a slower speed.
Further, if the power supply device is connected to the input circuit through the USB-a interface, the main control circuit 60 may determine the specific type of the power supply device (computer or adapter power supply) through a data communication protocol.
The above-mentioned conduction of the power transmission circuit 30 (or the data transmission circuit 40) can be understood as: the circuit between the pin connected to the input circuit 10 and the pin connected to the target output circuit is turned on. The power supply transmission circuit 30 (or the data transmission circuit 40) being disconnected can be understood as: the circuit between the pin connected to the input circuit 10 and the pin connected to the target output circuit is broken.
The multi-data line circuit provided by this embodiment includes the power supply transmission circuit 30, the data transmission circuit 40 and the plurality of terminal output circuits 20, and both the power supply transmission circuit 30 and the data transmission circuit 40 can selectively connect the input circuit 10 with the plurality of terminal output circuits 20, so that: when only one terminal output circuit 20 is connected with the terminal equipment, the power supply transmission circuit 30 and the data transmission circuit 40 are adopted to carry out rapid power supply and data transmission on the terminal output circuit 20; when two or more terminal output circuits 20 are connected to the terminal equipment at the same time, the power supply transmission circuit 30 is only used for supplying power to each terminal output circuit 20 (so as to avoid current or data disorder caused by the opening of the data transmission circuit 40). Therefore, the quick charging and data transmission of one terminal device can be realized, and the common charging of a plurality of terminal devices can also be realized simultaneously.
In one embodiment of the present invention, as shown in fig. 4, the plurality of terminal output circuits 20 include a TYPE-C terminal output circuit 21, a micro terminal output circuit 23 and a lighting terminal output circuit 22, which are respectively used for charging or data transmission of the TYPE-C terminal device, the micro terminal device and the lighting terminal device. The TYPE-C terminal device, the micro terminal device and the lighting terminal device can all comprise mobile terminal devices such as a mobile phone and a tablet.
Correspondingly, the power transmission circuit 30 also includes a TYPE-C power transmission circuit 31, a micro power transmission circuit 33 and an apple power transmission circuit 32, which are respectively used for charging or data transmission of the TYPE-C terminal output circuit 21, the micro terminal output circuit 23 and the lighting terminal output circuit 22. Specifically, each of the TYPE-C power transmission circuit 31, the micro power transmission circuit 33 and the apple power transmission circuit 32 may include a transistor 312 and a PMOS transistor 311, one end of the transistor 312 is connected to the PMOS transistor 311, and the other end (the connection end 1 in fig. 2 and 4) is connected to the second chip 62 of the main control circuit 60. It should be noted that the structure of the power transmission circuit 30 is only a preferred embodiment of the present embodiment, and the present embodiment is not limited to this, and for example, the power transmission circuit may only include a MOS transistor, as long as the whole circuit can realize selective conduction.
Further, when the main control circuit 60 detects that only one of the TYPE-C terminal device, the micro terminal device and the lighting terminal device is not fully charged and the others are fully charged or removed according to the output detection circuit, the power transmission circuit 30 is controlled to be turned on, and the data transmission circuit 40 is turned off, so that the input circuit 10 is connected to the target output circuit corresponding to the one that is not fully charged only through the power transmission circuit 30.
When the terminal device is charged by using the multi-data line circuit or the data line provided in this embodiment, if the target output circuit includes a plurality of (two or three) terminal output circuits 20, the main control circuit 60 controls the power transmission circuit 30 to be turned on, and the data transmission circuit 40 to be turned off, so as to respectively and commonly charge the plurality of terminal output circuits 20. When the plurality of terminal output circuits 20 charge the terminal devices connected thereto, the respective charging speeds are different because the performance of the terminal devices is different and the transmission performance between the data line and the terminal device is also different. And in the charging process, the main control circuit 60 can detect whether the terminal devices are effectively connected or fully charged through the output detection circuit, and when only one of the TYPE-C terminal device, the micro terminal device and the lighting terminal device is detected to be fully charged and the others are fully charged or removed, the data transmission circuit 40 can be controlled to be disconnected, so that the input circuit 10 is connected with the target output circuit corresponding to the one which is not fully charged through the power supply transmission circuit 30 only, and the target output circuit is rapidly charged.
In another embodiment of the present invention, the output detection circuit includes a lighting terminal authentication circuit 70 and a load access detection circuit 50, as shown in fig. 2, the lighting terminal authentication circuit 70 is respectively connected to the lighting terminal output circuit 22 and the main control circuit 60, when the target output circuit is the lighting terminal output circuit 22, the lighting terminal authentication circuit 70 is turned on, which can send an authentication success signal, and if the main control circuit 60 can detect the authentication success signal, it determines that the target output circuit is the lighting terminal output circuit 22. The load access detection circuit 50 comprises a TYPE-C access detection circuit and a micro access detection circuit, wherein the TYPE-C access detection circuit is respectively connected with the TYPE-C terminal output circuit 23 and the main control circuit 60 and is used for detecting whether the TYPE-C terminal output circuit 23 is connected with a terminal device; the micro access detection circuit is respectively connected with the micro terminal output circuit 23 and the main control circuit 60, and is used for detecting whether the micro terminal output circuit 23 is connected with the terminal equipment.
In the present embodiment, the terminal output circuit 20 connected with the terminal device can be detected by the lighting terminal authentication circuit 70 and the two access detection circuits, respectively, so that the target output circuit can be detected in time.
When the lighting terminal output circuit 22 is connected to the terminal device, the terminal output circuit 20 may send a connection signal ID0, the lighting terminal authentication circuit 70 may be turned on after receiving the connection signal ID0, and may authenticate the connected terminal device, if the connected terminal device is indeed the lighting terminal device, the lighting terminal authentication circuit sends an authentication success signal, and the main control circuit 60 determines that the target output circuit is the lighting terminal output circuit 22 after receiving the authentication success signal.
The TYPE-C access detection circuit and the micro access detection circuit may be similar in circuit, as shown in fig. 4, that is, the load access detection circuit 50 may include an NMOS transistor 51 or a 0 ohm resistor 52 (one of the connections of the two is selected). When the TYPE-C terminal device is connected to the TYPE-C terminal output circuit 23, one end (i.e., the connection end 3 in fig. 4) of the NMOS transistor (or 0 ohm resistor) connected to the TYPE-C terminal device is connected to the ground line of the TYPE-C terminal device, the voltage signal of the other end (i.e., the connection end 2 in fig. 4, connected to the second chip 62 of the main control circuit 60) of the NMOS transistor is pulled low, and the main control circuit 60 detects that the signal of the end is pulled low, so that it can be determined that the TYPE-C terminal device is connected to the TYPE-C terminal output circuit 23. Similarly, when the micro terminal device is connected to the micro terminal output circuit 23, one end of the NMOS transistor (or 0 ohm resistor) in the micro connection detection circuit is connected to the ground line of the TYPE-C terminal device, the voltage signal at the other end of the NMOS transistor is pulled down, and the master control circuit 60 detects that the signal at the end is pulled down, so that it can be determined that the micro terminal device is connected to the micro terminal output circuit 23.
Specifically, as shown in fig. 5, the lighting terminal authentication circuit 70 may include a first chip 71 and a second chip 72 connected in series, where one end of the first chip 71 is connected to the main control circuit 60, and the other end is connected to the second chip 72. Both chips can receive the connection signal IDO, and the first chip 71 generates an authentication success signal after receiving the connection signal IDO, and sends the authentication success signal to the main control circuit 60 (it can also be understood as authenticating the power transmission function of the lighting terminal output circuit 22). The second chip 72 is further connected to the lighting terminal output circuit 22, and can verify the data transmission function of the lighting terminal output circuit 22 and authenticate the connected lighting terminal device information. Thus, lighting terminal authentication is performed on the output detection circuit through the two chips, so that the accuracy of authentication can be ensured, the main control circuit 60 can timely and accurately start the lighting terminal output circuit 22, and a power supply path from the charging head to a load is switched on.
Further, a diode may be disposed between the first chip 71 and the lighting terminal output circuit 22, and the diode is turned on when the current is flowing from the output detection circuit to the first chip 71. Thus, the diode which is conducted in one direction is arranged, not only can receive the IDO signal to realize the verification function, but also can use the light-emitting function to show that the IDO signal is successfully transmitted.
Further, the lighting terminal authentication circuit 70 may further include a voltage regulator circuit, one end of the voltage regulator circuit is connected to ground, and the other end of the voltage regulator circuit is connected to a line between the first chip 71 and the lighting terminal output circuit 22. Therefore, the authentication circuit can play a role in voltage stabilization protection by arranging the voltage stabilizing circuit.
In another embodiment of this embodiment, as shown in fig. 6, the main control circuit 60 may include a control circuit 601 and a control power circuit 602, where the control circuit 601 is respectively connected to the power transmission circuit 30, the data transmission circuit 40 and the output detection circuit to realize the above-mentioned control of the power transmission circuit 30 and the data transmission circuit 40 and determine the target output circuit according to the detection result of the output detection circuit. The control power supply circuit 602 is connected to the input circuit 10 for supplying power to the control circuit 601.
Specifically, as shown in fig. 2 and fig. 6, the control circuit 601 may include a third chip 61 and a fourth chip 62, where the third chip 61 is connected to the input circuit and the data transmission circuit 40, respectively, for processing various protocols (including but not limited to data transmission protocol, communication protocol, etc.) applied by the one-to-many data line circuit. The fourth chip 62 is connected to the data transmission circuit 40 and the output detection circuit, respectively, and is used for controlling the power supply transmission circuit to make the input circuit and the corresponding terminal output circuit connected; and the circuit is also used for controlling the data transmission circuit to switch signals and determining the current target output circuit according to the output detection circuit. The third chip 61 and the fourth chip 62 may be provided with a plurality of pins, and different pins are connected to different circuits, so as to implement the above control function of the main control circuit 60.
In another specific implementation manner of this embodiment, as shown in fig. 7, the data transmission circuit 40 may include a fifth chip 41 and a sixth chip 42, wherein the fifth chip 41 and the sixth chip 42 are both connected to the main control circuit 60 and are respectively connected to the terminal output circuits 20, the fifth chip 41 is further connected to the input circuit 10 for receiving data transmission protocol signals (e.g., D +, D-protocol signals) at the input end, and then the main control circuit 60 may control the D +, D-protocol signals at the input ends of the fifth chip 41 and the sixth chip 42 to be switched to the terminal output circuits 20 (e.g., the D +, D-protocol signals may be respectively transmitted to the Lighting port of the Lighting terminal output circuit 22, the USB-C port of the TYPE-C terminal output circuit 23, and the Micro USB port of the Micro terminal output circuit 23).
It should be noted that the number and the positions of the chips in the lighting terminal authentication circuit 70, the control circuit 601 and the data transmission circuit 40 are only preferred embodiments of the present embodiment, and the present embodiment is not limited thereto, and can be specifically adjusted according to actual situations.
Further, as shown in fig. 2 and 8, the data line circuit may further include a current detection circuit 80, the current detection circuit 80 is respectively connected to the terminal output circuit 20 and the fourth chip 62, and the fourth chip 62 may further detect a current of a current target output circuit according to the current detection circuit 80 and start an over-current protection procedure when the detected current is greater than or equal to a first threshold. The first threshold may be obtained by testing according to an actual circuit simulation actual condition, and the embodiment is not limited in particular.
Specifically, the two current detection circuits 80 may include one or more current detection circuits 80, where the two current detection circuits 80 may be respectively connected to the output end of the main control circuit 60 and the ground end of the terminal output circuit 20, and respectively detect currents on the Micro terminal output circuit 23 and the lighting terminal output circuit, so as to implement overcurrent protection on the Micro terminal output circuit 23 and the lighting terminal output circuit (voltage and current that the TYPE-C terminal output circuit 21 can bear are relatively high, and in this embodiment, only a relatively low voltage/current that can bear can be protected, so as to reduce circuit complexity), and detect whether a terminal device connected to the terminal device is fully charged, so as to further enhance the safety performance of the data line circuit.
Further, as shown in fig. 2 and 9, the data line circuit may further include a voltage detection circuit 90, the voltage detection circuit 90 is respectively connected to the Micro terminal output circuit 23, the lighting terminal output circuit, and the fourth chip 62 may further detect a voltage of a current target output circuit (the Micro terminal output circuit 23, the lighting terminal output circuit) according to the voltage detection circuit 90, and start the over-voltage protection procedure when the detected voltage is greater than or equal to a second threshold.
In addition, the multi-data line circuit may further include a charging display circuit, and the corresponding multi-data line may further include a display screen, and the charging display circuit may include a light emitting diode, so that the display screen displays different colors or values to indicate a charging state of the terminal device. It should be noted that the structure of the single-to-multiple data line circuit is only a partial embodiment of the present embodiment, and the present embodiment is not limited thereto, and for example, the present embodiment may further include a local power supply circuit for supplying power to the terminal output circuit 20 or the lighting terminal authentication circuit 70, and various resistors, capacitance inductors, and the like for adjusting voltage and current. And the specific circuit connections and references to the labels on the various lines in the figure, the two line terminals labeled the same may be connected (a 1_9 in figure 2 may be equivalent to GND).
The operation principle of this embodiment will be described below with reference to the data line circuit structure in the above embodiments and fig. 1 to 9:
the input circuit 10 of the multi-data line circuit provided in the present embodiment is connected to a fast charger (not shown).
If the TYPE-C terminal output circuit 21 in the terminal output circuit 20 is connected to a TYPE-C terminal device, since one end of the output detection circuit (which may be referred to as a TYPE-C detection circuit) is connected to a GND (ground) of the terminal device, a signal at the other end of the output detection circuit is pulled low, and the main control circuit 60 detects that the signal of the TYPE-C detection circuit is pulled low, it is determined that the TYPE-C terminal output circuit 21 has a load inserted, the main control circuit 60 opens the power supply output circuit 31 corresponding to the TYPE-C terminal output circuit 21, a power supply path from a charger to the load is connected, and meanwhile, the data transmission circuit 40 is controlled to switch the D +, D-protocol signals to the load of the TYPE-C terminal output circuit 21, so as to realize rapid charging between the load and the charging head.
If the lighting terminal output circuit 22 in the terminal output circuit 20 is connected to the lighting terminal device, the lighting terminal authentication circuit 70 can receive the connection signal ID0, start to perform information verification on the accessed terminal device, and send an authentication success signal Mos switch to the main control circuit 60 after the authentication is successful, after the main control circuit 60 receives the authentication success signal Mos switch, it is determined that the lighting terminal output circuit 22 has a load inserted, the power supply output circuit 32 corresponding to the lighting terminal output circuit 22 is opened, a power supply path between a charger and the load is connected, and at the same time, the data transmission circuit 40 is controlled to switch the D +, D-protocol signal to the load of the lighting terminal output circuit 22, so as to realize rapid charging between the load and the charging head.
If the Micro terminal output circuit 23 in the terminal output circuit 20 is connected to the Micro terminal device, since one end of the output detection circuit (here, it can be understood as the Micro detection circuit) is connected to the GND (ground) of the terminal device, the signal at the other end of the output detection circuit is pulled low, and the main control circuit 60 detects that the signal of the Micro detection circuit is pulled low, it is determined that the Micro terminal output circuit 23 has a load inserted, the main control circuit 60 opens the power supply output circuit 33 corresponding to the Micro terminal output circuit 23, and turns on the power supply path from the charger to the load, and at the same time, the data transmission circuit 40 is controlled to switch the D +, D-protocol signal to the load of the Micro terminal output circuit 23, so as to realize the fast charging between the load and the charging head.
If two or more terminal devices are connected to the terminal output circuit 20, the main control circuit 60 may open the two or more terminal output circuits, turn on a power supply path from the charger to the two or more terminal output circuits, and simultaneously control the data transmission circuit 40 to perform D +, D-protocol signal conversion (if the data line is connected to the computer, the data transmission circuit 40 is still on, and data transmission may be performed; if the data line is connected to the adapter power supply, the data transmission circuit 40 is off), so that the terminal devices are no longer charged through the data transmission circuit 40, thereby implementing ordinary charging of two or more loads.
Specifically, if the main control circuit 60 detects that the current of one of the TYPE-C terminal output circuit 21, the micro terminal output circuit 23 and the lighting terminal output circuit 23 is lower than the predetermined threshold value through the current detection circuit 80 (which can be specifically set according to actual conditions, and the embodiment is not specifically limited), it is determined that the terminal device connected to the terminal output circuit is fully charged, the main control circuit 60 may control the corresponding power transmission circuit, disconnect the power path from the charging head to the load, if only one of the TYPE-C terminal output circuit 21, the micro terminal output circuit 23 and the lighting terminal output circuit 22 is detected to be left finally, the main control circuit 60 controls the data transmission circuit 40 to switch the D +, D-protocol signal to the load, and the normal charging between the load and the charging head is changed into the quick charging.
Further, if the main control circuit 60 detects that the terminal device connected to one of the TYPE-C terminal output circuit 21, the micro terminal output circuit 23 and the lighting terminal output circuit 22 has been removed through the lighting terminal authentication circuit and the load access detection circuit 50, the corresponding data transmission circuit 40 is controlled to disconnect the power path from the charging head to the load, and if only one of the TYPE-C terminal output circuit 21, the micro terminal output circuit 23 and the lighting terminal output circuit 22 is detected to be left at last, the main control circuit 60 controls the data transmission circuit 40 to switch the D +, D-protocol signal to the load, and the normal charging between the load and the charging head is changed into the fast charging.
In summary, when the terminal output circuit 20 charges a plurality of terminal devices simultaneously, the main control circuit 60 detects the current of each terminal output circuit 20 and whether the corresponding terminal device is plugged, and when the current is smaller than the preset threshold or the terminal device is removed, the main control circuit 60 closes the path from the current load to the charging head. And when only any one path of terminal equipment is detected to be connected, the load can be charged quickly.
Based on the same concept of the single-pull-multiple-data-line circuit, the present embodiment further provides a single-pull-multiple-data-line including the single-pull-multiple-data-line circuit according to any of the above embodiments.
The multi-data line provided by this embodiment is based on the same concept of the multi-data line circuit, so that the beneficial effects that the multi-data line circuit can achieve can be at least achieved, and are not described herein again.
It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (15)
1. A towed multiple data line circuit, comprising:
the input circuit is used for accessing power supply equipment;
the system comprises a plurality of terminal output circuits, a plurality of terminal output circuits and a plurality of terminal output circuits, wherein the terminal output circuits comprise a TYPE-C terminal output circuit, a micro terminal output circuit and a lighting terminal output circuit, and the terminal output circuits are respectively used for charging or data transmission of TYPE-C terminal equipment, micro terminal equipment and lighting terminal equipment;
a transmission circuit selectively connecting the input circuit with a plurality of terminal output circuits, respectively;
a master control circuit;
the output detection circuit comprises a lighting terminal authentication circuit, the lighting terminal authentication circuit is respectively connected with the lighting terminal output circuit and the main control circuit, when the target output circuit is the lighting terminal output circuit, the lighting terminal authentication circuit is conducted, and the main control circuit detects that the authentication success signal sent by the lighting terminal authentication circuit determines that the target output circuit is the lighting terminal output circuit.
2. The circuit of claim 1, wherein the transmission circuit comprises a power transmission circuit and a data transmission circuit, and a master control circuit, respectively connected to the input circuit, the terminal output circuit, the power transmission circuit, the data transmission circuit, and the output detection circuit, is configured to:
when the target output circuit comprises one circuit, controlling the power supply transmission circuit to be connected and the data transmission circuit to be disconnected, so that the target output circuit charges the terminal equipment in a first mode; when the target output circuit comprises two or more than two, controlling the power supply transmission circuit to be conducted, and enabling the target output circuit to charge the terminal equipment in a second mode; the first mode charging is faster than the second mode charging.
3. The circuit according to claim 2, wherein if the power supply device is a computer, and the main control circuit detects that the computer is connected to the input circuit through a USB-a interface, the main control circuit controls both the power supply transmission circuit and the data transmission circuit to be turned on, so that the target output circuit is respectively turned on with the input circuit through the power supply transmission circuit and the data transmission circuit, and charges the terminal device in the second mode;
if the power supply equipment is an adapter power supply, when the target output circuit comprises one circuit, the master control circuit controls the power supply transmission circuit and the data transmission circuit to be conducted, so that the target output circuit is respectively conducted with the input circuit through the power supply transmission circuit and the data transmission circuit, and the terminal equipment is charged in the first mode; when the target output circuits comprise two circuits, the master control circuit controls the power supply transmission circuit to be switched on, the data transmission circuits are switched off, the target output circuit is switched on with the input circuit through the power supply transmission circuit, and the second mode charging is carried out on a plurality of terminal devices.
4. The circuit of claim 2, wherein the master control circuit controls the input circuit to connect to a target output circuit corresponding to one of the TYPE-C terminal device, the micro terminal device, and the lighting terminal device through the power transmission circuit and the data transmission circuit when the output detection circuit detects that only one of the TYPE-C terminal device, the micro terminal device, and the lighting terminal device is not fully charged and the others are fully charged or removed.
5. The circuit of claim 2, wherein the output detection circuit further comprises a load access detection circuit, wherein the load access detection circuit comprises a TYPE-C access detection circuit and a micro access detection circuit, and the TYPE-C access detection circuit is respectively connected to the TYPE-C terminal output circuit and the main control circuit, and is configured to detect whether the TYPE-C terminal output circuit is connected to a terminal device; the micro access detection circuit is respectively connected with the micro terminal output circuit and the master control circuit and used for detecting whether the micro terminal output circuit is connected with the terminal equipment.
6. The circuit of claim 1, wherein the lighting terminal authentication circuit comprises a first chip and a second chip connected in series, one end of the first chip is connected to the main control circuit, and the other end of the first chip is connected to the second chip; the second chip is also connected with the lighting terminal output circuit.
7. The circuit of claim 6, wherein a diode is disposed between the first chip and the lighting termination output circuit, and the diode is turned on when the current is flowing from the lighting termination output circuit to the first chip.
8. The circuit of claim 6, wherein the lighting terminal authentication circuit further comprises a voltage regulator circuit, one end of the voltage regulator circuit is connected to ground, and the other end of the voltage regulator circuit is connected to a line between the first chip and the lighting terminal output circuit.
9. The circuit of claim 2, wherein the master control circuit comprises a control circuit and a control power supply circuit, and the control circuit is respectively connected with the power supply transmission circuit, the data transmission circuit and the output detection circuit; the control power supply circuit is connected with the input circuit and used for supplying power to the control circuit.
10. The circuit of claim 9, wherein the control circuit comprises a third chip and a fourth chip, and the third chip is respectively connected with the data transmission circuit;
the fourth chip is respectively connected with the input circuit, the power supply transmission circuit, the data transmission circuit and the output detection circuit, and is used for controlling the selective connection between the data transmission circuit and the plurality of terminal output circuits and determining the current target output circuit according to the output detection circuit.
11. The circuit of claim 10, further comprising a current detection circuit, wherein the current detection circuit is respectively connected to the output circuit and the fourth chip, and the fourth chip is further capable of detecting a current of a current target output circuit according to the current detection circuit and starting an over-current protection procedure when the detected current is greater than or equal to a first threshold.
12. The circuit of claim 10, further comprising a voltage detection circuit, wherein the voltage detection circuit is respectively connected to the terminal output circuit and the fourth chip, and the fourth chip is further capable of detecting a current voltage of a target output circuit according to the voltage detection circuit and starting an overvoltage protection procedure when the detected voltage is greater than or equal to a second threshold.
13. The circuit of claim 1, wherein each terminal output circuit comprises a MOS transistor.
14. The circuit of claim 5, wherein the load access detection circuits comprise TYPE-C access detection circuits each comprising an NMOS transistor or a 0 ohm resistor.
15. A towed multiple data line, comprising a towed multiple data line circuit as claimed in any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122092021.9U CN215642680U (en) | 2021-08-31 | 2021-08-31 | One-to-many data line circuit and data line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122092021.9U CN215642680U (en) | 2021-08-31 | 2021-08-31 | One-to-many data line circuit and data line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215642680U true CN215642680U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122092021.9U Active CN215642680U (en) | 2021-08-31 | 2021-08-31 | One-to-many data line circuit and data line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215642680U (en) |
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2021
- 2021-08-31 CN CN202122092021.9U patent/CN215642680U/en active Active
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