Circuit and system for realizing TYPEC expansion application based on POGO thimble

Abstract

The invention provides a circuit and a system for realizing TYPEC expansion application based on a POGO thimble, the circuit for realizing TYPEC expansion application based on the POGO thimble comprises a power supply, an interface circuit, a power supply adjusting circuit, a data control circuit and an expansion input and output circuit, the output end of the power supply is connected with the input end of the power supply adjusting circuit; the output end of the interface circuit is connected with the input end of the power supply adjusting circuit and the input end of the data control circuit, the output end of the power supply adjusting circuit is connected with a power supply module of the tablet computer and the input end of the expansion input and output circuit, and the data control circuit is connected with the input end of the expansion input and output circuit. And the output end of the expansion input / output circuit is connected with the expansion interface. By using the circuit, the problems of the tablet personal computer in the prior art can be effectively solved, the shunted signals are expanded into interfaces with different functions for use, and the use requirements of users for expanding different functions can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of tablet computers, and in particular to a circuit and a system for realizing TYPEC extended applications based on a POGO ejector pin. Background Art

[0002] With the development of science and technology and society, more and more electronic devices are entering our work and life. Tablet computers are a type of electronic device. Tablet computers, also called portable computers, are small, easy-to-carry personal computers that use a touch screen as a basic input device. The development status of tablet computers is mainly reflected in the expansion of market scale, diversification of product forms, and the wide application of fields.

[0003] Although current tablet computers have integrated a wealth of functions, their expansion capabilities are weak. They are only equipped with one Type-C interface, which is too small to achieve more functional use. In addition, the interface types for connecting to external devices are relatively single, which cannot meet the needs of users and is not conducive to improving the competitiveness of the product. Summary of the invention

[0004] In order to solve the problems in the prior art, the present invention provides a circuit and system for realizing TYPEC expansion application based on POGO ejector pin.

[0005] The present invention discloses a circuit for realizing TYPEC expansion application based on POGO ejector pin, comprising a power supply, an interface circuit, a power supply regulating circuit, a data control circuit and an expansion input-output circuit, wherein the output end of the power supply is connected to the input end of the power supply regulating circuit, the output end of the interface circuit is respectively connected to the input end of the power supply regulating circuit and the input end of the data control circuit, the output end of the power supply regulating circuit is respectively connected to a power supply module of a tablet computer and the input end of the expansion input-output circuit, the data control circuit is connected to the input end of the expansion input-output circuit, the output end of the expansion input-output circuit is connected to the expansion interface, and the data control circuit can amplify a signal of the interface circuit and expand the signal to the expansion input-output circuit.

[0006] The present invention is further improved in that a connection interface is provided on the interface circuit, and 27 contacts are provided in the connection interface, and the 1st, 2nd, 4th, 5th, 7th, 8th, 10th and 11th contacts of the connection interface are connected to the input end of the data control circuit, and the 19th and 20th contacts of the connection interface are connected to the input end of the power supply regulation circuit.

[0007] The present invention is further improved, the power supply regulation circuit includes a charging chip U4, a resistor R15, a field effect tube Q1, a resistor R11, a resistor R17, a field effect tube Q2, a resistor R12, a power management chip U1, an inductor L1, a fuse R11705 and an expansion module power management chip U2, the charging chip U4 is provided with 40 pins, the power management chip U1 is provided with 33 pins, the expansion module power management chip U2 is provided with 32 pins, the 18th and 20th pins of the charging chip U4 are connected to the 19th and 20th contacts of the connection interface, the 31st pin of the charging chip U4 is connected to the gate of the field effect tube Q1 through the resistor R15, and the drain of the field effect tube Q1 is connected to the power supply through the resistor R11 The 12th pin of the management chip U1 is connected, the 32nd pin of the charging chip U4 is connected to the gate of the field effect transistor Q2 through the resistor R17, the drain of the field effect transistor Q2 is connected to the 12th pin of the power management chip U1 through the resistor R12, the 15th, 16th, 20th, 21st, 22nd, 23rd and 34th pins of the power management chip U1 are connected to the input end of the fuse R11705 through the inductor L1, and the output end of the fuse R11705 is respectively connected to the power supply module of the tablet computer and the 1st, 2nd, 3rd, 4th, 5th and 32nd pins of the expansion module power management chip U2, and the 20th, 21st, 22nd, 23rd, 24th and 25th pins of the expansion module power management chip U2 are connected to the expansion input and output circuit.

[0008] The present invention is further improved, an interface switching chip U6 is provided on the data control circuit, 41 pins are provided on the interface switching chip U6, the expanded input and output circuit includes an HDMI interface circuit and a network port expansion circuit, the 9th, 10th, 12th, 13th, 15th, 16th, 18th and 19th pins of the interface switching chip U6 are connected to the 1st, 2nd, 4th, 5th, 7th, 8th, 10th and 11th contacts of the connection interface, the 40th, 39th, 37th, 36th, 34th, 33rd, 31st and 30th pins of the interface switching chip U6 are connected to the input end of the HDMI interface circuit, the output end of the HDMI interface circuit is connected to the HDMI interface, the 4th, 5th, 7th and 8th pins of the interface switching chip U6 are connected to the input end of the network port expansion circuit, and the output end of the network port expansion circuit is connected to the gigabit network port.

[0009] The present invention is further improved, the HDMI interface circuit includes an HDMI signal conversion chip U5, the HDMI signal conversion chip U5 is provided with 49 pins, the 38th, 39th, 41st, 42nd, 44th, 45th, 47th and 48th pins of the HDMI signal conversion chip U5 are connected to the 40th, 39th, 37th, 36th, 34th, 33rd, 31st and 30th pins of the interface switching chip U6, and the 23rd, 22nd, 20th, 19th, 17th, 16th, 14th and 13th pins of the HDMI signal conversion chip U5 are connected to the HDMI interface.

[0010] The present invention is further improved, the network port expansion circuit includes a line control chip U13, a network port conversion chip U15 and a network port transformer chip U16, the line control chip U13 is provided with 64 pins, the network port conversion chip U15 is provided with 49 pins, the network port transformer chip U16 is provided with 24 pins, the line control chip U13 No. 42, 41, 39 and 38 pins are connected to the interface switching chip U6 No. 4, 5, 7 and 8 pins, the line control chip U13 No. 42, 41, 39 and 38 pins are connected to the interface switching chip U6 No. 4, 5, 7 and 8 pins, Pins 47, 48, 50 and 51 of chip U13 are connected to pins 14, 15, 18 and 19 of network port conversion chip U15, pins 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 of network port conversion chip U15 are connected to pins 12, 11, 9, 8, 6, 5, 3 and 2 of network port transformer chip U16, and pins 13, 14, 16, 17, 19, 20, 22 and 23 of network port transformer chip U16 are connected to the gigabit network port.

[0011] The present invention is further improved, and the expanded input and output circuit also includes a USB2 interface circuit and an audio interface circuit. The USB2 interface circuit is provided with a USB2 hub chip, and the USB2 hub chip is provided with 28 pins. The 16th and 17th contacts of the connection interface are connected to the 36th and 37th pins of the hub control chip U13, the 64th and 63rd pins of the hub control chip U13 are connected to the 1st and 2nd pins of the USB2 hub chip, the 6th and 7th pins of the USB2 hub chip are connected to a USB2 interface, the 3rd and 4th pins of the USB2 hub chip are connected to another USB2 interface, the 12th and 13th pins of the USB2 hub chip are connected to the input end of the audio interface circuit, and the output end of the audio interface circuit is connected to the audio interface.

[0012] The present invention is further improved, and an audio signal conversion chip U26 is provided on the audio interface circuit, and 49 pins are provided on the audio signal conversion chip U26. The 8th and 9th pins of the audio signal conversion chip U26 are connected to the 12th and 13th pins of the USB2 hub chip, the 19th and 20th pins of the audio signal conversion chip U26 are connected to the microphone interface, and the 31st and 32nd pins of the audio signal conversion chip U26 are connected to the headphone interface.

[0013] The present invention is further improved, the 1st, 2nd, 4th, 5th, 6th and 7th pins of the line hub control chip U13 are connected to a USB1 interface, and the 9th, 10th, 11th, 12th, 14th and 15th pins of the line hub control chip U13 are connected to another USB1 interface.

[0014] The invention discloses a system, comprising a tablet computer and an expansion base, wherein a base control board is arranged in the expansion base, a circuit for realizing TYPEC expansion application based on POGO ejector pins is arranged in the base control board, an upper POGO ejector pin is arranged on the tablet computer, a lower POGO ejector pin cooperating with the upper POGO ejector pin is arranged on the interface circuit, and a gold-plated layer is arranged on the upper POGO ejector pin and the lower POGO ejector pin.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a circuit and system for realizing TYPEC expansion application based on POGO ejector pin, and adopting its structure can effectively solve the problem that the number of tablet computer interfaces in the prior art is limited and cannot be expanded to meet the rich functional requirements of users. By applying the circuit, the interface circuit can divert the signal of the tablet computer, and expand the diverted signal into interfaces with different functions through the cooperation of the data control circuit and the expansion input and output circuit, which effectively improves the user experience, and can realize automatic voltage increase and decrease for power supply through the power supply adjustment circuit, which can meet the user's use requirements for different functional expansions and is conducive to improving the competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the present invention or the solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 The principle block diagram of the circuit for implementing TYPEC expansion application based on POGO ejector pin;

[0018] Figure 2 is a circuit diagram of the interface circuit;

[0019] Figure 3 A circuit diagram of a power supply regulating circuit;

[0020] Figure 4 A circuit diagram of a power supply regulating circuit;

[0021] Figure 5 A circuit diagram of a power supply regulating circuit;

[0022] Figure 6 is a circuit diagram of a data control circuit;

[0023] Figure 7 is a circuit diagram of an HDMI interface circuit;

[0024] Figure 8 This is the circuit diagram of the network port expansion circuit;

[0025] Fig. 9 This is the circuit diagram of the network port expansion circuit;

[0026] Fig.10 This is the circuit diagram of the network port expansion circuit;

[0027] Fig.11 is a circuit diagram of a USB2 interface circuit;

[0028] Fig.12 A circuit diagram of an audio interface circuit;

[0029] Fig.13 A circuit diagram of an audio interface circuit;

[0030] Fig.14 The circuit diagram of the audio interface circuit. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0032] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention may be combined with other embodiments.

[0033] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0034] like Figure 1-14 As shown, a system of the present invention includes a tablet computer and an expansion base, wherein the expansion base is provided with a base control board, and the base control board is provided with a circuit for realizing TYPEC expansion application based on POGO ejector pin.

[0035] The circuit for implementing TYPEC expansion application based on POGO ejector pin includes power supply, interface circuit, power supply regulation circuit, data control circuit and expansion input and output circuit.

[0036] An upper POGO ejector pin is arranged on the tablet computer, a lower POGO ejector pin matched with the upper POGO ejector pin is arranged on the interface circuit, and a gold-plated layer is arranged on the upper POGO ejector pin and the lower POGO ejector pin.

[0037] By setting the gold-plated layer, the upper POGO pin and the lower POGO pin can be further thickened to achieve higher transmission speed.

[0038] The output end of the power supply is connected to the input end of the power supply regulation circuit, the output end of the interface circuit is respectively connected to the input end of the power supply regulation circuit and the input end of the data control circuit, the output end of the power supply regulation circuit is respectively connected to the power supply module of the tablet computer and the input end of the expansion input and output circuit, the data control circuit is connected to the input end of the expansion input and output circuit, and the output end of the expansion input and output circuit is connected to the expansion interface.

[0039] By setting the data control circuit, the signal of the interface circuit can be amplified and expanded to the extended input and output circuit, so that the single interface of the tablet computer can be expanded to multiple interfaces, thereby improving the user experience.

[0040] The interface circuit is provided with a connection interface having 27 contacts, the 1st, 2nd, 4th, 5th, 7th, 8th, 10th and 11th contacts of the connection interface are connected to the input end of the data control circuit, and the 19th and 20th contacts of the connection interface are connected to the input end of the power supply regulation circuit.

[0041] Through the setting of the interface circuit, various interface contacts of the tablet computer can be expanded and extended, so as to facilitate the expansion of various signals and the electrical connection with the circuit in the base control board.

[0042] The 1st, 2nd, 4th, 5th, 7th, 8th, 10th and 11th contacts of the connection interface are connected with the data sending and data receiving lines in the original Type-C interface of the tablet computer, and the data input and output lines are led out.

[0043] The 19th and 20th contacts of the connection interface are connected to the power supply line in the original Type-C interface of the tablet computer, and the power supply line is led out.

[0044] The power supply regulation circuit includes a charging chip U4, a resistor R15, a field effect tube Q1, a resistor R11, a resistor R17, a field effect tube Q2, a resistor R12, a power management chip U1, an inductor L1, a fuse R11705 and an expansion module power management chip U2. The charging chip U4 is provided with 40 pins, the power management chip U1 is provided with 33 pins, and the expansion module power management chip U2 is provided with 32 pins. The 18th and 20th pins of the charging chip U4 are connected to the 19th and 20th contacts of the connection interface, the 31st pin of the charging chip U4 is connected to the gate of the field effect tube Q1 through the resistor R15, and the drain of the field effect tube Q1 is connected to the power management chip U1 through the resistor R11. The 12th pin of the charging chip U4 is connected to the gate of the field effect tube Q2 through the resistor R17, the drain of the field effect tube Q2 is connected to the 12th pin of the power management chip U1 through the resistor R12, the 15th, 16th, 20th, 21st, 22nd, 23rd and 34th pins of the power management chip U1 are connected to the input end of the fuse R11705 through the inductor L1, the output end of the fuse R11705 is respectively connected to the power supply module of the tablet computer and the 1st, 2nd, 3rd, 4th, 5th and 32nd pins of the expansion module power management chip U2, and the 20th, 21st, 22nd, 23rd, 24th and 25th pins of the expansion module power management chip U2 are connected to the expansion input and output circuit.

[0045] The chip model of the charging chip U4 is FL7102, which is mainly used to send a boost or buck signal to the power management chip U1. The power management chip U1 receives the signal and outputs a specified voltage for power supply.

[0046] Pins 31 and 32 of the charging chip U4 are mainly used to control the power management chip U1 and send a step-down or step-up signal.

[0047] The chip model of the power management chip U1 is SC8112, which is a DC chip used for power supply. Pins 15, 16, 20, 21, 22, 23 and 34 of the power management chip U1 are mainly used to output voltage for power supply, respectively powering the tablet computer and expansion interface.

[0048] The chip model of the expansion module power management chip U2 is SY9329C, which is mainly used for power supply management of the expansion interface. Pins 20, 21, 22, 23, 24 and 25 of the expansion module power management chip U2 are used to output 5V voltage to power multiple expansion interfaces.

[0049] By setting the data control circuit, the power supply voltage of the expansion base can be effectively boosted to 20V to charge the tablet computer, and the voltage can be stepped down to 5V to power the expansion input and output circuits, so that it can be used as a DC power supply to perform PD step-up and step-down power supply.

[0050] An interface switching chip U6 is provided on the data control circuit, and 41 pins are provided on the interface switching chip U6. The expanded input and output circuits include an HDMI interface circuit and a network port expansion circuit. The 9th, 10th, 12th, 13th, 15th, 16th, 18th and 19th pins of the interface switching chip U6 are connected to the 1st, 2nd, 4th, 5th, 7th, 8th, 10th and 11th contacts of the connection interface, the 40th, 39th, 37th, 36th, 34th, 33rd, 31st and 30th pins of the interface switching chip U6 are connected to the input end of the HDMI interface circuit, and the output end of the HDMI interface circuit is connected to the HDMI interface, the 4th, 5th, 7th and 8th pins of the interface switching chip U6 are connected to the input end of the network port expansion circuit, and the output end of the network port expansion circuit is connected to the gigabit network port.

[0051] The chip signal of the interface switching chip U6 is PS8742B, which is mainly used to amplify the received signal and expand the signal to different functional interfaces. The 40th, 39th, 37th, 36th, 34th, 33rd, 31st and 30th pins of the interface switching chip U6 are used to establish communication with the HDMI interface circuit, and the 4th, 5th, 7th and 8th pins of the interface switching chip U6 are used to establish communication with the network port expansion circuit.

[0052] The expansion of different types of interfaces can be achieved through the setting of the interface switching chip U6, thereby improving the flexibility and expansion capability of the expansion base.

[0053] The HDMI interface circuit includes an HDMI signal conversion chip U5, which is provided with 49 pins. Pins 38, 39, 41, 42, 44, 45, 47 and 48 of the HDMI signal conversion chip U5 are connected to pins 40, 39, 37, 36, 34, 33, 31 and 30 of the interface switching chip U6, and pins 23, 22, 20, 19, 17, 16, 14 and 13 of the HDMI signal conversion chip U5 are connected to the HDMI interface.

[0054] The model of the HDMI signal conversion chip U5 is LT8711. Pins 23, 22, 20, 19, 17, 16, 14 and 13 of the HDMI signal conversion chip U5 establish communication with the HDMI interface.

[0055] The HDMI interface circuit can enable the tablet computer to expand the interface into an HDMI interface and realize 1080p data output and input.

[0056] The network port expansion circuit includes a line hub control chip U13, a network port conversion chip U15 and a network port transformer chip U16. The line hub control chip U13 is provided with 64 pins, the network port conversion chip U15 is provided with 49 pins, and the network port transformer chip U16 is provided with 24 pins. Pins 42, 41, 39 and 38 of the line hub control chip U13 are connected to pins 4, 5, 7 and 8 of the interface switching chip U6, pins 47, 48, 50 and 51 of the line hub control chip U13 are connected to pins 14, 15, 18 and 19 of the network port conversion chip U15, and pins 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 of the network port conversion chip U15 are connected to pins 12, 11, 9, 8, 6, 5, 3 and 2 of the network port transformer chip U16. The 13th, 14th, 16th, 17th, 19th, 20th, 22nd and 23rd pins of the network port transformer chip U16 are connected to the Gigabit network port.

[0057] The chip model of the hub control chip U13 is GL3510, which is mainly used to convert data signals into USB3.0 signals and expand multiple USB3.0 outputs. The 47th, 48th, 50th and 51st pins of the hub control chip U13 are used to establish communication with the network port conversion chip U15.

[0058] The chip model of the network port conversion chip U15 is RTL8153, which is mainly used to convert USB3.0 signals to network port signals. Pins 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 of the network port conversion chip U15 are used to establish communication with the network port transformer chip U16.

[0059] The chip model of the network port transformer chip U16 is GST5009, which is mainly used to prevent external signal interference, perform isolation, and improve the stability of the gigabit network port signal.

[0060] By setting up the network port expansion circuit, the interface signal of the tablet computer can be expanded into a gigabit network port, which improves the flexibility of user use.

[0061] The expanded input and output circuit also includes a USB2 interface circuit and an audio interface circuit. The USB2 interface circuit is provided with a USB2 hub chip. The USB2 hub chip is provided with 28 pins. The 16th and 17th contacts of the connection interface are connected to the 36th and 37th pins of the hub control chip U13, the 64th and 63rd pins of the hub control chip U13 are connected to the 1st and 2nd pins of the USB2 hub chip, the 6th and 7th pins of the USB2 hub chip are connected to a USB2 interface, the 3rd and 4th pins of the USB2 hub chip are connected to another USB2 interface, the 12th and 13th pins of the USB2 hub chip are connected to the input end of the audio interface circuit, and the output end of the audio interface circuit is connected to the audio interface.

[0062] The chip model of the USB2 hub chip is GL850G, which is mainly used to convert data signals into USB2.0 and expand them into multiple convenient access to various types of interfaces. The 3rd, 4th, 6th and 7th pins of the USB2 hub chip are mainly used to establish communication with the USB2 interface, and the 12th and 13th pins of the USB2 hub chip are mainly used to establish communication with the audio interface circuit.

[0063] By expanding the settings of the input and output circuits, the interface of the tablet computer can be expanded to USB2.0 and audio interface, thereby improving the user experience.

[0064] An audio signal conversion chip U26 is provided on the audio interface circuit. The audio signal conversion chip U26 is provided with 49 pins. Pins 8 and 9 of the audio signal conversion chip U26 are connected to pins 12 and 13 of the USB2 hub chip. Pins 19 and 20 of the audio signal conversion chip U26 are connected to the microphone interface. A microphone circuit CON2 is provided on the microphone interface. Pins 31 and 32 of the audio signal conversion chip U26 are connected to the headphone interface. A headphone circuit CON1 is provided on the headphone interface.

[0065] The chip model of the audio signal conversion chip U26 is ALC4050, which is mainly used to convert the connected audio signal into a USB signal for use with a tablet computer. Pins 19 and 20 of the audio signal conversion chip U26 are mainly used to connect to the microphone interface to enable the access and use of the microphone. Pins 31 and 32 of the audio signal conversion chip U26 are mainly used to establish a connection with the headphone interface.

[0066] By setting the audio interface circuit, the earphone and microphone can be connected to the tablet computer for use, thereby improving the user experience.

[0067] The 1st, 2nd, 4th, 5th, 6th and 7th pins of the line hub control chip U13 are connected to one USB1 interface, and the 9th, 10th, 11th, 12th, 14th and 15th pins of the line hub control chip U13 are connected to another USB1 interface.

[0068] The chip model of the hub control chip U13 is GL3510, which is mainly used to realize the expansion of USB3.0 and improve the user experience. The 1st, 2nd, 4th, 5th, 6th and 7th pins of the hub control chip U13 are used to communicate with one of the USB3.0 interfaces, and the 9th, 10th, 11th, 12th, 14th and 15th pins of the hub control chip U13 are used to communicate with another USB3.0.

[0069] As can be seen from the above, the beneficial effects of the present invention are as follows: the use of its mechanism can effectively solve the problem in the prior art that the number of tablet computer interfaces is limited and cannot be expanded to meet the user's rich functional requirements. By applying this circuit, the interface circuit can lead out the signal of the tablet computer and shunt it, and then expand the shunt signal into interfaces with different functions through the cooperation of the data control circuit and the expansion input and output circuit, which effectively improves the user's experience. In addition, the power supply adjustment circuit can realize automatic voltage increase and decrease to supply power, which can meet the user's different functional expansion requirements and is conducive to improving the competitiveness of the product.

[0070] The specific implementation modes described above are preferred implementation modes of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation modes, and all equivalent changes made according to the present invention are within the protection scope of the present invention.

Claims

1. A circuit for implementing TYPEC expansion application based on POGO ejector pin, characterized in that: It includes a power supply, an interface circuit, a power supply regulating circuit, a data control circuit and an extended input-output circuit. The output end of the power supply is connected to the input end of the power supply regulating circuit, the output end of the interface circuit is respectively connected to the input end of the power supply regulating circuit and the input end of the data control circuit, the output end of the power supply regulating circuit is respectively connected to the power supply module of the tablet computer and the input end of the extended input-output circuit, the data control circuit is connected to the input end of the extended input-output circuit, the output end of the extended input-output circuit is connected to the extended interface, and the data control circuit can amplify the signal of the interface circuit and expand the signal to the extended input-output circuit.

2. The circuit for realizing TYPEC expansion application based on POGO ejector pin according to claim 1 is characterized in that: The interface circuit is provided with a connection interface, and 27 contacts are provided in the connection interface. The 1st, 2nd, 4th, 5th, 7th, 8th, 10th and 11th contacts of the connection interface are connected to the input end of the data control circuit, and the 19th and 20th contacts of the connection interface are connected to the input end of the power supply regulation circuit.

3. The circuit for realizing TYPEC expansion application based on POGO ejector pin according to claim 2 is characterized in that: The power supply regulation circuit includes a charging chip U4, a resistor R15, a field effect tube Q1, a resistor R11, a resistor R17, a field effect tube Q2, a resistor R12, a power management chip U1, an inductor L1, a fuse R11705 and an expansion module power management chip U2. The charging chip U4 is provided with 40 pins, the power management chip U1 is provided with 33 pins, and the expansion module power management chip U2 is provided with 32 pins. The 18th and 20th pins of the charging chip U4 are connected to the 19th and 20th contacts of the connection interface, the 31st pin of the charging chip U4 is connected to the gate of the field effect tube Q1 through the resistor R15, and the drain of the field effect tube Q1 is connected to the The 12th pin of the charging chip U4 is connected, the 32nd pin of the charging chip U4 is connected to the gate of the field effect tube Q2 through the resistor R17, the drain of the field effect tube Q2 is connected to the 12th pin of the power management chip U1 through the resistor R12, the 15th, 16th, 20th, 21st, 22nd, 23rd and 34th pins of the power management chip U1 are connected to the input end of the fuse R11705 through the inductor L1, and the output end of the fuse R11705 is respectively connected to the power supply module of the tablet computer and the 1st, 2nd, 3rd, 4th, 5th and 32nd pins of the expansion module power management chip U2, and the 20th, 21st, 22nd, 23rd, 24th and 25th pins of the expansion module power management chip U2 are connected to the expansion input and output circuit.

4. The circuit for realizing TYPEC expansion application based on POGO ejector pin according to claim 3 is characterized in that: The data control circuit is provided with an interface switching chip U6, and the interface switching chip U6 is provided with 41 pins. The extended input and output circuit includes an HDMI interface circuit and a network port expansion circuit. The 9th, 10th, 12th, 13th, 15th, 16th, 18th and 19th pins of the interface switching chip U6 are connected to the 1st, 2nd, 4th, 5th, 7th, 8th, 10th and 11th contacts of the connection interface, the 40th, 39th, 37th, 36th, 34th, 33rd, 31st and 30th pins of the interface switching chip U6 are connected to the input end of the HDMI interface circuit, and the output end of the HDMI interface circuit is connected to the HDMI interface, the 4th, 5th, 7th and 8th pins of the interface switching chip U6 are connected to the input end of the network port expansion circuit, and the output end of the network port expansion circuit is connected to the gigabit network port.

5. The circuit for realizing TYPEC expansion application based on POGO ejector pin according to claim 4 is characterized in that: The HDMI interface circuit includes an HDMI signal conversion chip U5, which is provided with 49 pins. Pins 38, 39, 41, 42, 44, 45, 47 and 48 of the HDMI signal conversion chip U5 are connected to pins 40, 39, 37, 36, 34, 33, 31 and 30 of the interface switching chip U6, and pins 23, 22, 20, 19, 17, 16, 14 and 13 of the HDMI signal conversion chip U5 are connected to the HDMI interface.

6. The circuit for realizing TYPEC expansion application based on POGO ejector pin according to claim 5 is characterized in that: The network port expansion circuit includes a line control chip U13, a network port conversion chip U15 and a network port transformer chip U16. The line control chip U13 is provided with 64 pins, the network port conversion chip U15 is provided with 49 pins, and the network port transformer chip U16 is provided with 24 pins. The 42nd, 41st, 39th and 38th pins of the line control chip U13 are connected to the 4th, 5th, 7th and 8th pins of the interface switching chip U6. Pins 47, 48, 50 and 51 of U13 are connected to pins 14, 15, 18 and 19 of the network port conversion chip U15, pins 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 of the network port conversion chip U15 are connected to pins 12, 11, 9, 8, 6, 5, 3 and 2 of the network port transformer chip U16, and pins 13, 14, 16, 17, 19, 20, 22 and 23 of the network port transformer chip U16 are connected to the gigabit network port.

7. The circuit for realizing TYPEC expansion application based on POGO ejector pin according to claim 6 is characterized in that: The expanded input and output circuit also includes a USB2 interface circuit and an audio interface circuit. The USB2 interface circuit is provided with a USB2 hub chip, and the USB2 hub chip is provided with 28 pins. The 16th and 17th contacts of the connection interface are connected to the 36th and 37th pins of the hub control chip U13, the 64th and 63rd pins of the hub control chip U13 are connected to the 1st and 2nd pins of the USB2 hub chip, the 6th and 7th pins of the USB2 hub chip are connected to a USB2 interface, the 3rd and 4th pins of the USB2 hub chip are connected to another USB2 interface, the 12th and 13th pins of the USB2 hub chip are connected to the input end of the audio interface circuit, and the output end of the audio interface circuit is connected to the audio interface.

8. The circuit for realizing TYPEC expansion application based on POGO ejector pin according to claim 7 is characterized in that: The audio interface circuit is provided with an audio signal conversion chip U26, and the audio signal conversion chip U26 is provided with 49 pins. The 8th and 9th pins of the audio signal conversion chip U26 are connected to the 12th and 13th pins of the USB2 hub chip, the 19th and 20th pins of the audio signal conversion chip U26 are connected to the microphone interface, and the 31st and 32nd pins of the audio signal conversion chip U26 are connected to the headphone interface.

9. The circuit for realizing TYPEC expansion application based on POGO ejector pin according to claim 8, characterized in that: The 1st, 2nd, 4th, 5th, 6th and 7th pins of the line hub control chip U13 are connected to one USB1 interface, and the 9th, 10th, 11th, 12th, 14th and 15th pins of the line hub control chip U13 are connected to another USB1 interface.

10. A system, characterized in that: It includes a tablet computer and an expansion base, wherein the expansion base is provided with a base control board, and the base control board is provided with a circuit for realizing TYPEC expansion application based on POGO ejector as described in any of the above items, the tablet computer is provided with an upper POGO ejector, and the interface circuit is provided with a lower POGO ejector that cooperates with the upper POGO ejector, and a gold-plated layer is provided on the upper POGO ejector and the lower POGO ejector.

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