CN217113274U

CN217113274U - Multi-specification interface conversion circuit

Info

Publication number: CN217113274U
Application number: CN202221124487.0U
Authority: CN
Inventors: 胡金
Original assignee: Jiangsu Jicui Intelligent Integrated Circuit Design Technology Research Institute Co ltd
Current assignee: Jiangsu Jicui Intelligent Integrated Circuit Design Technology Research Institute Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-08-02
Anticipated expiration: 2032-05-11

Abstract

The utility model relates to the field of communication circuits, and discloses a multi-specification interface conversion circuit, which comprises a Type-c input interface unit, a Type-c output interface unit, a 485 interface conversion unit, a control unit, an HDMI output interface unit and a power supply unit; the power end of the Type-c input interface unit is electrically connected with the power supply unit, and the power supply unit is configured to provide working power supply for the 485 interface conversion unit, the control unit and the HDMI output interface unit; 485 interface conversion unit and the control unit all with Type-c input interface unit electricity is connected, and the control unit is connected with HDMI output interface unit electricity, and the control unit is connected with Type-c output interface unit electricity, and when in-service use, the utility model discloses a 485 interface conversion unit can be 485 formats with Type-c data conversion, can make things convenient for the communication with industrial control equipment, can be with Type-c data conversion HDMI data through control unit and HDMI output interface unit, conveniently throw the screen display, consequently through the utility model discloses can be with the data of Type-c interface data conversion multiple interface.

Description

Multi-specification interface conversion circuit

Technical Field

The utility model relates to a communication circuit technical field, concretely relates to many specifications interface converting circuit.

Background

The Type-C interface is widely applied to electronic products and data interaction due to the small interface area, the support of 'positive and negative blind plugging', the support of quick charging and bidirectional charging, the support of USB3.1 standard and extremely rich function expansibility. For some devices that do not support a Type-C interface, an interface conversion circuit is often required to implement a change in a communication protocol, so as to ensure that the devices that do not support the Type-C interface can read information from the Type-C interface. The current common interface conversion circuit can only support one interface conversion, but can not support multiple interface conversions. In addition, most of PLC controllers used in the industrial field exchange information with peripheral servo drivers or touch screens through 485 communication and cannot communicate with equipment with a Type-C interface.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of background art, the utility model provides a many specifications interface converting circuit can convert the data conversion of Type-C interface into HDMI interface and RS485 data.

For solving the technical problem, the utility model provides a following technical scheme: the multi-specification interface conversion circuit comprises a Type-c input interface unit, a Type-c output interface unit, a 485 interface conversion unit, a control unit, an HDMI output interface unit and a power supply unit;

the power end of the Type-c input interface unit is electrically connected with the power supply unit, and the power supply unit is configured to provide working power supply for the 485 interface conversion unit, the control unit and the HDMI output interface unit; the 485 interface conversion unit and the control unit are electrically connected with the Type-c input interface unit, the control unit is electrically connected with the HDMI output interface unit, and the control unit is electrically connected with the Type-c output interface unit.

In one embodiment, the control unit includes a control chip U5 of model JS1017_ 1.

In one embodiment, the HDMI output interface unit includes an HDMI connector H2, wherein the terminal No. 2, terminal No. 5, terminal No. 8, terminal No. 11, and terminal No. 17 of the HDMI connector H2 are all grounded, and the terminal No. 1, terminal No. 3, terminal No. 4, terminal No. 6, terminal No. 7, terminal No. 9, terminal No. 10, terminal No. 12, terminal No. 13, and terminal No. 19 of the HDMI connector H2 are electrically connected to the pin No. 29, pin No. 28, pin No. 25, pin No. 24, pin No. 22, pin No. 21, pin No. 18, pin No. 17, pin No. 32, and pin No. 46 of the control chip U5, respectively; a pin 31 of the control chip U5 is electrically connected with one end of a resistor R11, a pin 49 of the control chip U5 is electrically connected with the other end of the resistor R11, the other end of the resistor R14 and a source electrode of a MOS tube Q3, a grid electrode of the MOS tube Q3 and the other end of the resistor R14 are both input with a 3.3V power supply, and a drain electrode of the MOS tube Q3 is electrically connected with a terminal 15 of the HDMI connector H2; a pin No. 30 of the control chip U5 is electrically connected with one end of a resistor R12, a pin No. 48 of the control chip U5 is electrically connected with the other end of a resistor R12, the other end of a resistor R15 and a source electrode of a MOS tube Q4, a grid electrode of the MOS tube Q4 and the other end of the resistor R15 are both input with a 3.3V power supply, and a drain electrode of the MOS tube Q4 is electrically connected with a terminal No. 16 of an HDMI connector H2; the 15 terminal of the HDMI connector H2 is electrically connected with one end of a resistor R32, the 16 terminal of the HDMI connector H2 is electrically connected with one end of a resistor R33, the other end of the resistor R32 is electrically connected with the other end of a resistor R33, the negative electrode of a diode D4 and the 18 terminal of the HDMI connector H2 respectively, and 5V power is input to the positive electrode of the diode D5.

In a certain embodiment, the 485 interface conversion unit comprises a chip IC1 with model CH340B and a chip U4 with model MAX485CSA +; the pin 1 of the chip IC1 is grounded, the pin 2 of the chip IC1 is electrically connected with the pin 4 of the chip U4 through a resistor R22, the pin 3 of the chip IC1 is electrically connected with the pin 1 of the chip U4 through a resistor R20, the pin 4 of the chip IC1 is grounded through a capacitor C33, the

pins

5 and 6 of the chip IC1 are electrically connected with the Type-C input interface unit, the pin 16 of the chip IC1 inputs a 5V power supply, and the pin 15 of the chip IC1 is electrically connected with the pin 2 and the pin 3 of the chip U4 through a resistor R21; no. 5 pin ground connection of chip U4, No. 8 pin input 5V power of chip U4, No. 6 pin of chip U4 is connected with resistance R25 one end and resistance R28 one end electricity respectively, resistance R25 one end is connected with power supply unit and electric capacity C42 one end electricity respectively, electric capacity C42 other end ground connection, the resistance R28 other end is connected with resistance R30 one end and No. 3 terminal electricity of four terminal joint J2 respectively, No. 7 pin of chip U4 is connected with resistance R24 one end and resistance R27 other end electricity respectively, the resistance R24 other end ground connection, the resistance R27 other end is connected with the resistance R30 other end and No. 2 terminal electricity of four terminal joint J2 respectively, No. 1 terminal input 5V power of four terminal joint J2, No. 4 terminal ground connection.

In one embodiment, the power supply unit includes a power management circuit outputting a 5V power, a first voltage conversion circuit converting the 5V power to a 3.3V power, and a second voltage conversion circuit converting the 5V power to a 1.2V power.

In one embodiment, the power management circuit includes a power management chip with model number IM2603, the first voltage conversion circuit includes a conversion chip with model number XC6206, and the second voltage conversion circuit includes a conversion chip with model number SY 8088.

In one embodiment, the 1.2V power output terminal of the second voltage conversion circuit is further electrically connected to one end of a magnetic bead B3 and one end of a magnetic bead B4, the other end of the magnetic bead B3 is grounded through a capacitor C3, and the other end of the magnetic bead B4 is grounded through a capacitor C8.

Compared with the prior art, the utility model beneficial effect who has is: in the time of in-service use, the utility model discloses a 485 interface conversion unit can be 485 formats with Type-c data conversion, can be convenient with the communication of industrial control equipment, can be with Type-c data conversion for the HDMI data through the control unit and HDMI output interface unit, conveniently throw the screen display and show, consequently through the utility model discloses can be the data of multiple interface with Type-c interface data conversion.

Drawings

FIG. 1 is a block diagram of the present invention in an embodiment;

FIG. 2 is a circuit diagram of a Type-c input interface unit according to the present invention in the embodiment;

fig. 3 is a circuit diagram of a control unit of the present invention in an embodiment;

fig. 4 is a circuit diagram of a Type-c output interface unit of the present invention in an embodiment;

fig. 5 is a circuit diagram of an HDMI output interface unit according to the present invention in an embodiment;

fig. 6 is a circuit diagram of a 485 interface conversion unit according to the present invention in an embodiment;

FIG. 7 is a block diagram of a power supply unit in the embodiment;

fig. 8 is a circuit diagram of the 1.2 power supply output terminal of the second voltage conversion circuit and the connected filter circuit in the embodiment.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1, the multi-specification interface conversion circuit includes a Type-c input interface unit 1, a Type-c output interface unit 6, a 485 interface conversion unit 5, a control unit 3, an HDMI output interface unit 4, and a power supply unit 2;

the power end of the Type-c input interface unit 1 is electrically connected with the power supply unit 2, and the power supply unit 2 is configured to provide working power supply for the 485 interface conversion unit 5, the control unit 3 and the HDMI output interface unit 4; the Type-c output interface unit 6, the 485 interface conversion unit 5 and the control unit 3 are all electrically connected with the Type-c input interface unit 1, and the control unit 3 is electrically connected with the HDMI output interface unit 4.

Wherein the circuit diagram of the Type-c input interface unit 1 is shown in fig. 2, the circuit diagram of the control unit 3 is shown in fig. 3, and the control unit 3 comprises a control chip U5 with model JS1017_ 1. The Type-c input interface unit 1 comprises an input connector H1, the connection relationship between the input connector H1 and the control chip U5 is shown in FIGS. 2 and 3, wherein the same reference numerals are used to form the electrical connection relationship in the actual circuit. The circuit diagram of the Type-c output interface unit 6 is shown in fig. 4, the Type-c output interface unit 6 includes an output connector H3, and the connection relationship between the output connector H3 and the control chip U5 is shown in fig. 3 and 4, where the same reference numerals are used to indicate the electrical connection relationship in the actual circuit.

Referring to fig. 3 and 5, in the present embodiment, the HDMI output interface unit 4 includes an HDMI connector H2, the terminal No. 2, the terminal No. 5, the terminal No. 8, the terminal No. 11 and the terminal No. 17 of the HDMI connector H2 are all grounded, and the terminal No. 1, the terminal No. 3, the terminal No. 4, the terminal No. 6, the terminal No. 7, the terminal No. 9, the terminal No. 10, the terminal No. 12, the terminal No. 13 and the terminal No. 19 of the HDMI connector H2 are electrically connected to the pin No. 29, the pin No. 28, the pin No. 25, the pin No. 24, the pin No. 22, the pin No. 21, the pin No. 18, the pin No. 17, the pin No. 32 and the pin No. 46 of the control chip U5, respectively; a pin 31 of the control chip U5 is electrically connected with one end of the resistor R11, a pin 49 of the control chip U5 is electrically connected with the other end of the resistor R11, the other end of the resistor R14 and the source of the MOS tube Q3, a gate of the MOS tube Q3 and the other end of the MOS tube Q14 are both input with a 3.3V power supply, and a drain of the MOS tube Q3 is electrically connected with a terminal 15 of the HDMI connector H2; a pin No. 30 of the control chip U5 is electrically connected with one end of a resistor R12, a pin No. 48 of the control chip U5 is electrically connected with the other end of a resistor R12, the other end of the resistor R15 and a source electrode of a MOS tube Q4, a grid electrode of the MOS tube Q4 and the other end of the MOS tube R15 are both input with a 3.3V power supply, and a drain electrode of the MOS tube Q4 is electrically connected with a terminal No. 16 of the HDMI connector H2; the 15 terminal of the HDMI connector H2 is electrically connected with one end of a resistor R32, the 16 terminal of the HDMI connector H2 is electrically connected with one end of a resistor R33, the other end of the resistor R32 is electrically connected with the other end of a resistor R33, the negative electrode of a diode D4 and the 18 terminal of the HDMI connector H2 respectively, and 5V power is input to the positive electrode of the diode D5.

Referring to fig. 3 and 6, in this embodiment, the 485 interface conversion unit 5 includes a chip IC1 with a model CH340B and a chip U4 with a model MAX485CSA +; pin 1 of chip IC1 is grounded, pin 2 of chip IC1 is electrically connected with pin 4 of chip U4 through resistor R22, pin 3 of chip IC1 is electrically connected with pin 1 of chip U4 through resistor R20, pin 4 of chip IC1 is grounded through capacitor C33, pin 5 and pin 6 of chip IC1 are electrically connected with Type-C input interface unit, pin 16 of chip IC1 inputs 5V power, pin 15 of chip IC1 is electrically connected with pin 2 and pin 3 of chip U4 through resistor R21; pin 5 of chip U4 is grounded, pin 8 of chip U4 inputs a 5V power supply, pin 6 of chip U4 is electrically connected with one end of resistor R25 and one end of resistor R28 respectively, one end of resistor R25 is electrically connected with one end of a power supply unit and one end of capacitor C42 respectively, the other end of capacitor C42 is grounded, the other end of resistor R28 is electrically connected with one end of resistor R30 and terminal 3 of four-terminal connector J2 respectively, pin 7 of chip U4 is electrically connected with one end of resistor R24 and the other end of resistor R27 respectively, the other end of resistor R24 is grounded, the other end of resistor R27 is electrically connected with the other end of resistor R30 and terminal 2 of four-terminal connector respectively, terminal 1 of four-terminal connector J2 inputs a 5V power supply, and terminal 4 of four-terminal connector J2 is grounded.

Referring to fig. 7, in the present embodiment, the power supply unit 2 includes a power supply management circuit 20, a first voltage conversion circuit 21, and a second voltage conversion circuit 22, the power supply management circuit 20 outputs a 5V power supply, the first voltage conversion circuit 21 converts the 5V power supply into a 3.3V power supply, and the second voltage conversion circuit 22 converts the 5V power supply into a 1.2V power supply. In actual use, a 5V power supply, a 3.3V power supply and a 1.2V power supply are all input to the control chip U5, the 5V power supply and the 3.3V power supply are input to the HDMI output interface unit 4, and the 5V power supply is input to the 485 interface conversion unit 5.

In addition, the working power supplies of the control chip U5 include 1.2V and 3.3V, the 1.2V power supplies include three video-related core power supplies of 1V2_ HDMI, 1V2_ VCCA and 1V2_ VCCD, if the 3 1.2V power supplies are supplied by the same power supply chip, the three power supplies must be isolated by magnetic beads to reduce the influence of the digital power supply on the analog power supply, and each 1.2V power supply is filtered by a capacitor. Specifically, as shown in fig. 8, the 1.2V power output end of the second voltage conversion circuit is further electrically connected to one end of a magnetic bead B3 and one end of a magnetic bead B4, the other end of the magnetic bead B3 is grounded through a capacitor C3, the other end of the magnetic bead B4 is grounded through a capacitor C8, the magnetic bead B3 and the capacitor C3 form an isolation filter circuit, and the magnetic bead B4 and the capacitor C8 form an isolation filter circuit.

In actual use, the control unit 3 is configured to convert data input from the Type-c input interface unit 1 into HDMI data and output the HDMI data from the HDMI output interface unit 4, the control unit 3 is configured to output data input from the Type-c input interface unit 1 from the Type-c output interface unit 6, and the 485 interface conversion unit 5 may directly convert data input from the Type-c input interface unit 1 into 485 format.

To sum up, when the in-service use, the utility model discloses a 485 interface conversion unit can be 485 formats with Type-c data conversion, can make things convenient for the communication with industrial control equipment, can be HDMI data with Type-c data conversion through the control unit with HDMI output interface unit, conveniently throw the screen display and show, consequently through the utility model discloses can be the data of multiple interface with Type-c interface data conversion.

In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The multi-specification interface conversion circuit is characterized by comprising a Type-c input interface unit, a Type-c output interface unit, a 485 interface conversion unit, a control unit, an HDMI output interface unit and a power supply unit;

2. The multi-specification interface conversion circuit according to claim 1, wherein the control unit comprises a control chip U5 with model number JS1017_ 1.

3. The multi-format interface conversion circuit according to claim 2, wherein the HDMI output interface unit comprises an HDMI connector H2, the terminals No. 2, 5, 8, 11 and 17 of the HDMI connector H2 are all grounded, and the terminals No. 1, 3, 4, 6, 7, 9, 10, 12, 13 and 19 of the HDMI connector H2 are electrically connected to the pins No. 29, 28, 25, 24, 22, 21, 18, 17, 32 and 46 of the control chip U5, respectively; a pin 31 of the control chip U5 is electrically connected with one end of a resistor R11, a pin 49 of the control chip U5 is electrically connected with the other end of the resistor R11, the other end of the resistor R14 and a source electrode of the MOS transistor Q3, a grid electrode of the MOS transistor Q3 and the other end of the MOS transistor Q14 are both input with a 3.3V power supply, and a drain electrode of the MOS transistor Q3 is electrically connected with a terminal 15 of the HDMI connector H2; a pin No. 30 of the control chip U5 is electrically connected with one end of a resistor R12, a pin No. 48 of the control chip U5 is electrically connected with the other end of a resistor R12, the other end of a resistor R15 and a source electrode of a MOS tube Q4, a grid electrode of the MOS tube Q4 and the other end of the resistor R15 are both input with a 3.3V power supply, and a drain electrode of the MOS tube Q4 is electrically connected with a terminal No. 16 of an HDMI connector H2; the 15 terminal of the HDMI connector H2 is electrically connected with one end of a resistor R32, the 16 terminal of the HDMI connector H2 is electrically connected with one end of a resistor R33, the other end of the resistor R32 is electrically connected with the other end of a resistor R33, the negative electrode of a diode D4 and the 18 terminal of the HDMI connector H2 respectively, and 5V power is input to the positive electrode of the diode D5.

4. The multi-specification interface conversion circuit of claim 1, wherein the 485 interface conversion unit comprises a chip IC1 with model CH340B and a chip U4 with model MAX485CSA +; the pin 1 of the chip IC1 is grounded, the pin 2 of the chip IC1 is electrically connected with the pin 4 of the chip U4 through a resistor R22, the pin 3 of the chip IC1 is electrically connected with the pin 1 of the chip U4 through a resistor R20, the pin 4 of the chip IC1 is grounded through a capacitor C33, the pins 5 and 6 of the chip IC1 are electrically connected with the Type-C input interface unit, the pin 16 of the chip IC1 inputs a 5V power supply, and the pin 15 of the chip IC1 is electrically connected with the pin 2 and the pin 3 of the chip U4 through a resistor R21; no. 5 pin ground connection of chip U4, No. 8 pin input 5V power of chip U4, No. 6 pin of chip U4 is connected with resistance R25 one end and resistance R28 one end electricity respectively, resistance R25 one end is connected with power supply unit and electric capacity C42 one end electricity respectively, electric capacity C42 other end ground connection, the resistance R28 other end is connected with resistance R30 one end and No. 3 terminal electricity of four terminal joint J2 respectively, No. 7 pin of chip U4 is connected with resistance R24 one end and resistance R27 other end electricity respectively, the resistance R24 other end ground connection, the resistance R27 other end is connected with the resistance R30 other end and No. 2 terminal electricity of four terminal joint J2 respectively, No. 1 terminal input 5V power of four terminal joint J2, No. 4 terminal ground connection.

5. The multi-specification interface conversion circuit according to claim 1, wherein the power supply unit includes a power management circuit, a first voltage conversion circuit and a second voltage conversion circuit, the power management circuit outputs a 5V power, the first voltage conversion circuit converts the 5V power into a 3.3V power, and the second voltage conversion circuit converts the 5V power into a 1.2V power.

6. The multi-specification interface conversion circuit of claim 5, wherein the power management circuit comprises a power management chip with model number IM2603, the first voltage conversion circuit comprises a conversion chip with model number XC6206, and the second voltage conversion circuit comprises a conversion chip with model number SY 8088.

7. The multi-specification interface conversion circuit according to claim 5 or 6, wherein the 1.2V power output terminal of the second voltage conversion circuit is further electrically connected to one end of a magnetic bead B3 and one end of a magnetic bead B4, respectively, the other end of the magnetic bead B3 is grounded through a capacitor C3, and the other end of the magnetic bead B4 is grounded through a capacitor C8.