A connector with OTG function

Abstract

This utility model discloses a connector with OTG functionality. It comprises a first interface unit, a communication authentication unit, a boost unit, a second interface unit, a data transmission control unit, and a third interface unit. The first interface unit connects to a mobile terminal. The communication authentication unit authenticates the mobile terminal's communication. The boost unit receives the voltage signal from the mobile terminal processed by the communication authentication unit and supplies power to the OTG device and data transmission control unit connected to the third interface unit. The mobile terminal transmits data with the OTG device through the data transmission control unit. When the voltage signal cannot supply power to the OTG device and / or the data transmission control unit, the second interface unit connects to a charging input terminal to power the mobile terminal and the OTG device, enabling simultaneous charging and data transmission between the mobile terminal and the OTG device, thus improving the data transmission rate. When the voltage is insufficient, the charging input terminal supplies power to the mobile terminal, the data transmission control unit, and the OTG device, ensuring data transmission stability.

Description

Technical Field

[0001] This utility model belongs to the field of electronic circuit technology, and in particular relates to a connector with OTG function. Background Technology

[0002] With the development of electronic devices, users have increasingly higher demands for them. Currently, electronic devices with OTG (On The Go) interfaces can function as both hosts and peripherals. The USB OTG standard, while fully compatible with the USB 2.0 standard, adds power management features, allowing electronic devices via the OTG interface to both communicate and charge. However, in many applications involving computer audio and smart devices (such as mobile phones or tablets), data exchange is necessary. Data transfer consumes a significant amount of power, and the connection via the data cable makes it difficult to charge the mobile device, leading to battery depletion and interruption of data transmission. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a connector with OTG functionality, enabling simultaneous charging and data transmission between the mobile terminal and the OTG device, thereby improving the data transmission rate. When the voltage is insufficient, the charging input terminal can supply power to the mobile terminal, the data transmission control unit, and the OTG device, ensuring data transmission stability and solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a connector with OTG function, including a first interface unit, a communication authentication unit, a boost unit, a second interface unit, a data transmission control unit, and a third interface unit. The communication authentication unit, the second interface unit, the boost unit, and the data transmission control unit are all connected to the first interface unit. The communication authentication unit and the third interface unit are all connected to the second interface unit. The boost unit and the data transmission control unit are all connected to the third interface unit. The boost unit is connected to the data transmission control unit.

[0006] The first interface unit is used to connect to a mobile terminal, the communication authentication unit is used to perform communication authentication on the mobile terminal, the boost unit is used to receive the voltage signal of the mobile terminal processed by the communication authentication unit, the voltage signal is used to power the OTG device connected to the third interface unit and the data transmission control unit, and the mobile terminal transmits data with the OTG device through the data transmission control unit.

[0007] When the voltage signal cannot supply power to the OTG device and / or the data transmission control unit, the second interface unit is used to connect the charging input terminal to supply power to the mobile terminal and the OTG device.

[0008] As a preferred embodiment of the above technical solution, the communication authentication unit includes a chip U1, resistors R1 and R2, capacitors C1 and C2, and a MOSFET Q1 connected to the first interface unit. One end of resistor R2 is connected to the drain of MOSFET Q1 and then to the first interface unit. The other end of resistor R2 is connected to the source of MOSFET Q1 and then to one end of resistor R1. The other end of resistor R1 is connected to the gate of MOSFET Q1 and then to chip U1. Capacitors C1 and C2 are connected in parallel to chip U1.

[0009] As a preferred embodiment of the above technical solution, the chip U1 is an OTG certified chip with model number 3998C.

[0010] As a preferred embodiment of the above technical solution, the boost unit includes a chip U3, capacitors C5, C7, C8, and C10, resistors R7 and R8, inductor L2, and diode D2. One end of capacitor C7 and inductor L2 is connected to chip U3, and the other end of inductor L2 is connected to the anode of diode D2. One end of capacitors C5, C8, and C10 and resistor R7 is connected in parallel to the cathode of diode D2, and the other end of resistor R7 and resistor R8 are connected to chip U3.

[0011] As a preferred embodiment of the above technical solution, the chip U3 is a boost chip with model number 8863.

[0012] As a preferred embodiment of the above technical solution, the data transmission control unit includes a chip U2, a capacitor C3, a capacitor C4, and a capacitor C9 connected to the third interface unit. The capacitors C3 and C4 are connected in parallel to the chip U2, and the capacitor C9 is connected to the chip U2.

[0013] As a preferred embodiment of the above technical solution, the chip U2 is a hub controller with model number 8845.

[0014] As a preferred embodiment of the above technical solution, the first interface unit is a Lightning interface.

[0015] As a preferred embodiment of the above technical solution, both the second interface unit and the third interface unit are TYPE-C interfaces.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] By setting up a first interface unit, a communication authentication unit, a boost unit, a second interface unit, a data transmission control unit, and a third interface unit, the first interface unit connects to the mobile terminal. The communication authentication unit performs communication authentication on the mobile terminal. The boost unit receives the voltage signal from the mobile terminal processed by the communication authentication unit. The voltage signal powers the OTG device and the data transmission control unit connected to the third interface unit. The mobile terminal transmits data with the OTG device through the data transmission control unit. When the voltage signal cannot power the OTG device and / or the data transmission control unit, the second interface unit connects to the charging input terminal to power the mobile terminal and the OTG device, enabling the mobile terminal and the OTG device to transmit data while charging, thus improving the data transmission rate. When the voltage is insufficient, the charging input terminal can power the mobile terminal, the data transmission control unit, and the OTG device, ensuring the stability of data transmission. Attached Figure Description

[0018] Figure 1 This is a structural block diagram of the connector with OTG function proposed in this utility model;

[0019] Figure 2 This is a circuit diagram of the communication authentication unit proposed in this utility model;

[0020] Figure 3 This is a circuit diagram of the boost unit proposed in this utility model;

[0021] Figure 4 This is a circuit diagram of the data transmission control unit proposed in this utility model;

[0022] Figure 5 This is a circuit diagram of the second interface unit proposed in this utility model.

[0023] The symbols for the main components are explained below:

[0024] 100 - First interface unit; 110 - Communication authentication unit; 120 - Boost unit; 130 - Second interface unit; 140 - Data transmission control unit; 150 - Third interface unit. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] See Figure 1 This utility model provides a connector with OTG function, including a first interface unit 100, a communication authentication unit 110, a boost unit 120, a second interface unit 130, a data transmission control unit 140, and a third interface unit 150. The communication authentication unit 110, the second interface unit 130, the boost unit 120, and the data transmission control unit 140 are all connected to the first interface unit 100. The communication authentication unit 110 and the third interface unit 150 are all connected to the second interface unit 130. The boost unit 120 and the data transmission control unit 140 are all connected to the third interface unit 150. The boost unit 120 is connected to the data transmission control unit 140.

[0028] Wherein, the first interface unit 100 is used to connect to a mobile terminal, the communication authentication unit 110 is used to perform communication authentication on the mobile terminal, the boost unit 120 is used to receive the voltage signal of the mobile terminal processed by the communication authentication unit 110, the voltage signal is used to supply power to the OTG device connected to the third interface unit 150 and the data transmission control unit 140, and the mobile terminal transmits data with the OTG device through the data transmission control unit 140;

[0029] When the voltage signal cannot supply power to the OTG device and / or the data transmission control unit 140, the second interface unit 130 is used to connect the charging input terminal to supply power to the mobile terminal and the OTG device.

[0030] In this embodiment, see Figure 2The communication authentication unit 110 includes a chip U1, resistors R1 and R2, capacitors C1 and C2, and a MOSFET Q1 connected to the first interface unit 100. One end of resistor R2 is connected to the drain of MOSFET Q1 and then to the first interface unit 100. The other end of resistor R2 is connected to the source of MOSFET Q1 and then to one end of resistor R1. The other end of resistor R1 is connected to the gate of MOSFET Q1 and then to chip U1. Capacitors C1 and C2 are connected in parallel to chip U1. The chip U1 is an OTG authentication chip of model 3998C. The boost unit 120 includes a chip U3, capacitors C5, C7, C8, and C10, resistors R7 and R8, inductor L2, and diode D2. One end of capacitor C7 and inductor L2 is connected to chip U3, and the other end of inductor L2 is connected to the anode of diode D2. One end of capacitors C5, C8, C10, and resistor R7 is connected in parallel to the cathode of diode D2, and the other end of resistor R7 and resistor R8 are connected to chip U3. The chip U3 is a boost chip of model 8863.

[0031] It should be noted that, for reference Figure 3 and Figure 4 The data transmission control unit 140 includes a chip U2, capacitors C3, C4, and C9 connected to the third interface unit 150. Capacitors C3 and C4 are connected in parallel to chip U2, and capacitor C9 is connected to chip U2. Chip U2 is a hub controller of model 8845. The first interface unit 100 is a Lightning interface, and the second interface unit 130 and the third interface unit 150 are both Type-C interfaces. The first interface unit 100 includes a terminal J1. Pins 2 and 3 of terminal J1 are connected to pins 6 and 5 of chip U1, and pins 5 and 9 of terminal J1 are connected to pin 1 of chip U1. Pins 7 and 6 of terminal J1 output signals DP+ and DM-. The gate of MOSFET Q1 and resistor R1 are connected to pin 4 of chip U1, and capacitors C1 and C2 are connected in parallel to pin 3 of chip U1.

[0032] In the boost unit 120, capacitor C7, inductor L2 and pins 4 and 5 of chip U3 are connected to pins 1 and 13 of terminal J1. Inductor L2 and the anode of diode D2 are connected to pin 1 of chip U3. Resistors R7 and R8 are connected to pin 3 of chip U3. The boost unit 120 boosts the 4.2V voltage output from terminal J1 to 5V.

[0033] The third interface unit 150 includes a terminal J3, a resistor R9 and a resistor R10. Resistor R9 is connected to pin 11 of terminal J3, resistor R10 is connected to pin 3 of terminal J3, pins 12 and 13 of terminal J3 are connected to pins 11 and 12 of chip U2, pins 5 and 4 of chip U2 are connected to pins 7 and 6 of terminal J1, capacitors C3 and C4 are connected in parallel to pin 7 of chip U2, and capacitor C9 is connected to pin 6 of chip U2.

[0034] Among them, see Figure 5 The second interface unit 130 includes terminal J2, resistors R11 and R3, and diode D1. Resistor R3 is connected to pin 11 of terminal J2, resistor R11 is connected to pin 3 of terminal J2, the anode of diode D1 is connected to pins 2, 7, 10, and 15 of terminal J2, and the cathode of diode D1 outputs 5V. For example, in conventional OTG products with an Apple connector (Lightning interface) to a Type-C connector, due to Apple's current limitations, high-power hard drives cannot be driven. Adding an external power supply function can enable the driving of high-power hard drives.

[0035] In practical applications, after the product is connected to a mobile phone (mobile terminal), the phone sends a signal to the authentication chip (communication authentication unit) for communication. After the communication is completed, power is drawn from the phone to the boost chip (boost unit). After boosting, the voltage is supplied to the OTG device and the hub controller (data transmission control unit). At the same time, data can be transmitted to the hub controller, and the hub controller can transmit data with the OTG device. When the power supply (voltage signal) is insufficient, the OTG device can be powered through the charging input terminal, which can also charge the mobile phone at the same time. In this diagram, the arrow connecting the first interface unit 100 and the communication authentication unit 110 indicates that the mobile phone accesses and is authenticated by the authentication chip; the arrow connecting the first interface unit 100 and the boost unit 120 indicates that the power is drawn after authentication by the authentication chip; the arrow connecting the first interface unit 100 and the data transmission control unit 140 indicates USB data transmission; the arrow connecting the communication authentication unit 110 and the second interface unit 130 indicates charging control; the arrow connecting the second interface unit 130 and the first interface unit 100 indicates the charging cable; the arrow connecting the boost unit 120 and the third interface unit 150 indicates that the power is supplied to the peripheral device after boosting; the arrow connecting the second interface unit 130 and the third interface unit 150 indicates power supply to the peripheral device; the arrow connecting the boost unit 120 and the data transmission control unit 140 indicates power supply to the hub controller; and the arrow connecting the data transmission control unit 140 and the third interface unit 150 indicates USB data transmission.

[0036] It should be understood that by setting up a first interface unit 100, a communication authentication unit 110, a boost unit 120, a second interface unit 130, a data transmission control unit 140, and a third interface unit 150, the first interface unit 100 connects to the mobile terminal, the communication authentication unit 110 performs communication authentication on the mobile terminal, the boost unit 120 receives the voltage signal from the mobile terminal processed by the communication authentication unit 110, and the voltage signal supplies power to the OTG device and the data transmission control unit 140 connected to the third interface unit 150. The mobile terminal transmits data with the OTG device through the data transmission control unit 140. When the voltage signal cannot supply power to the OTG device and / or the data transmission control unit 140, the second interface unit 130 connects to the charging input terminal to supply power to the mobile terminal and the OTG device, realizing simultaneous charging and data transmission between the mobile terminal and the OTG device, improving the data transmission rate. When the voltage is insufficient, the charging input terminal can supply power to the mobile terminal, the data transmission control unit, and the OTG device, ensuring the stability of data transmission.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A connector with OTG function, characterized in that, It includes a first interface unit, a communication authentication unit, a boost unit, a second interface unit, a data transmission control unit, and a third interface unit. The communication authentication unit, the second interface unit, the boost unit, and the data transmission control unit are all connected to the first interface unit. The communication authentication unit and the third interface unit are all connected to the second interface unit. The boost unit and the data transmission control unit are all connected to the third interface unit. The boost unit is also connected to the data transmission control unit. The first interface unit is used to connect to a mobile terminal, the communication authentication unit is used to perform communication authentication on the mobile terminal, the boost unit is used to receive the voltage signal of the mobile terminal processed by the communication authentication unit, the voltage signal is used to power the OTG device connected to the third interface unit and the data transmission control unit, and the mobile terminal transmits data with the OTG device through the data transmission control unit. When the voltage signal cannot supply power to the OTG device and / or the data transmission control unit, the second interface unit is used to connect the charging input terminal to supply power to the mobile terminal and the OTG device.

2. The connector with OTG function according to claim 1, characterized in that, The communication authentication unit includes a chip U1, resistors R1 and R2, capacitors C1 and C2, and a MOSFET Q1 connected to the first interface unit. One end of resistor R2 is connected to the drain of MOSFET Q1 and then to the first interface unit. The other end of resistor R2 is connected to the source of MOSFET Q1 and then to one end of resistor R1. The other end of resistor R1 is connected to the gate of MOSFET Q1 and then to chip U1. Capacitors C1 and C2 are connected in parallel to chip U1.

3. The connector with OTG function according to claim 2, characterized in that, The chip U1 is an OTG certified chip with model number 3998C.

4. The connector with OTG function according to claim 1, characterized in that, The boost unit includes chip U3, capacitors C5, C7, C8, and C10, resistors R7 and R8, inductor L2, and diode D2. One end of capacitor C7 and inductor L2 is connected to chip U3, and the other end of inductor L2 is connected to the anode of diode D2. One end of capacitors C5, C8, and C10 and resistor R7 is connected in parallel to the cathode of diode D2, and the other end of resistor R7 and resistor R8 are connected to chip U3.

5. The connector with OTG function according to claim 4, characterized in that, The chip U3 is a boost converter chip with model number 8863.

6. The connector with OTG function according to claim 1, characterized in that, The data transmission control unit includes a chip U2, capacitors C3, C4, and C9 connected to the third interface unit. Capacitors C3 and C4 are connected in parallel to chip U2, and capacitor C9 is connected to chip U2.

7. The connector with OTG function according to claim 6, characterized in that, The chip U2 is a hub controller with model number 8845.

8. The connector with OTG function according to claim 1, characterized in that, The first interface unit is a Lightning interface.

9. The connector with OTG function according to claim 8, characterized in that, Both the second interface unit and the third interface unit are TYPE-C interfaces.

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