Multifunctional USB Type-C interface converter

Abstract

The utility model discloses a multifunctional USB (Universal Serial Bus) Type-C interface converter, which comprises a PD3.0 processor, the first USB Type-C interface is connected with a display, and the second USB Type-C interface is connected with a PD3.0 power supply; the PD3.0 processor converts an HDMI signal input by the HDMI interface into a DP signal matched with the first USB Type-C interface through a built-in HDMI to DP signal conversion processor; according to the utility model, the single Type-C interface can be used for converting traditional USB2 signal, HDMI signal and Type-C PD charging into a single Type-C interface, the single Type-C interface can support video and USB2 data transmission and PD charging functions at the same time, 20V charging can be carried out on a computer according to the specification of PD3.0, all original functions can be retained, the structure is simple and compact, the circuit of the product is most simplified, and the attenuation degree of signal transmission is reduced to the minimum.

Description

Technical Field

[0001] The utility model belongs to the technical field of charging and communication connection of power electronic products, and relates to a multifunctional USB Type-C interface converter. Background Art

[0002] Power electronic products in traditional technology need to be equipped with USB2 signal interface, HDMI signal interface, Type-CPD charging interface, etc. respectively. Video transmission, USB2 data transmission, and PD charging functions are realized through USB2 signal interface, HDMI signal interface, and Type-C PD charging interface respectively. The structure is complex, the number of parts is large, and the operation is inconvenient.

[0003] The USB Type-C interface can transmit USB data, video, audio and power at the same time. Therefore, the USB Type-C interface has become the mainstream interface technology since its advent. The charging and communication connection interfaces of power electronic products in the existing technology are gradually developing towards the unified use of the USB Type-C interface. The research and development of new laptop products also tends to adopt the Type-C interface.

[0004] In order to be compatible with traditional interface monitors, USB devices and other interfaces, it is usually necessary to use an expansion dock to expand the Type-C interface into video, USB, network port or other interfaces to meet consumers' office and entertainment needs. At the same time, the expansion dock can also charge the computer.

[0005] In November 2015, the USB-IF Association launched the PD3.0 specification, which can charge computers, monitors, mobile phones, etc. at 20V 5A 100W through the Type-C interface.

[0006] In order to adapt to the development trend of cutting-edge new technologies and new products in the industry, it is necessary to develop a converter that can simultaneously support video transmission, USB2 data transmission, and PD charging functions, and integrate the above multiple functions into one. It can integrate the traditional USB2 signal interface, HDMI signal interface, and Type-C PD charging interface into a single Type-C interface. Through a single Type-C interface, it can support both video and USB2 data transmission and PD charging function at the same time. It can charge the computer at 20V according to the PD3.0 specification and retain all the original functions. Summary of the invention

[0007] In order to solve the above-mentioned problems existing in the prior art, the purpose of the utility model is to provide a multifunctional USB Type-C interface converter, which can simultaneously support video transmission, USB2 data transmission, and PD charging functions. It has a simple and compact structure, a simplified product circuit, and a minimum attenuation of signal transmission. It has a small number of components and is easy to operate.

[0008] The technical solution adopted by the utility model is:

[0009] A multifunctional USB Type-C interface converter includes a PD3.0 processor, wherein the PD3.0 processor is connected to a plurality of data interfaces, wherein the plurality of data interfaces include at least two USB Type-C interfaces, one HDMI interface and one USB2 interface;

[0010] The first USB Type-C interface is used to connect to a display, and the second USB Type-C interface is used to connect to a PD3.0 power source;

[0011] The PD3.0 processor is provided with an HDMI to DP signal conversion processor, and the HDMI to DP signal conversion processor is used to convert the HDMI signal input by the HDMI interface into a DP signal compatible with the first USB Type-C interface;

[0012] The USB2 interface is used to input USB2 data and directly transmit it to the first USB Type-C interface;

[0013] The PD3.0 processor is used to control and detect the connection status and working mode of the display, request the corresponding mode from the computer and PD power supply, and convert the corresponding video mode of DP output to the display through HDMI.

[0014] Further, the USB2 interface is directly connected to the first USB Type-C interface through a signal line; the USB2 interface is connected to the PD3.0 processor through a first Vbus line;

[0015] The PD3.0 processor is used to detect the access status of the USB2 interface and convert the access status of the USB2 interface into DP configuration information of the first USB Type-C interface.

[0016] Furthermore, the PD3.0 processor is connected to the first USB Type-C interface and the second USB Type-C interface through a CC control line; the second USB Type-C interface is connected to the first USB Type-C interface through a second Vbus line.

[0017] Furthermore, a switch module and a voltage reduction module are provided on the second Vbus line;

[0018] The switch module is connected to the PD3.0 processor and is controlled to be turned on or off by the PD3.0 processor;

[0019] The step-down module is used to step down the Vbus power input from the second USB Type-C interface and convert it into a low voltage.

[0020] Furthermore, the switch module includes two switches, and the two switches are connected in series to the second Vbus line; the step-down module is connected to the second Vbus line at a position between the two switches.

[0021] Furthermore, the step-down module is used to step down and convert the Vbus power input from the first USB Type-C interface into 3.3V, 1.8V and 1.2V voltages.

[0022] Furthermore, the step-down module includes a first voltage stabilizer, a second voltage stabilizer and a third voltage stabilizer, and the second voltage stabilizer and the third voltage stabilizer are connected in parallel to the second Vbus line via the first voltage stabilizer;

[0023] The first regulator is used to step down the Vbus power input of the first USB Type-C interface and convert it into a low voltage of 3.3V. The second regulator is used to step down the Vbus power input of the first USB Type-C interface and convert it into a low voltage of 1.2V. The third regulator is used to step down the Vbus power input of the first USB Type-C interface and convert it into a low voltage of 1.8V.

[0024] Furthermore, the first voltage regulator is a SY8201CABC input synchronous buck regulator, and the second voltage regulator and the third voltage regulator are both JW5250ASOTA buck switching regulators.

[0025] Furthermore, the first USB Type-C interface and the second USB Type-C interface both support PD3.0 communication, PD3.0 communication is backward compatible with PD2.0 communication, and the first USB Type-C interface supports DP Alt-mode signal mode.

[0026] Finally, the high-frequency signal lines of the first USB Type-C interface are connected one-to-one to the corresponding signal lines of the HDMI to DP signal conversion processor, and the P4_CC1 pins of the first USB Type-C interface are connected to the PD3.0 processor, so that the PD3.0 processor can communicate with the display through the first USB Type-C interface;

[0027] The P3_CC1 pin of the second USB Type-C interface is connected to the PD3.0 processor, so that the PD3.0 processor can communicate with the PD power supply through the second USB Type-C interface;

[0028] The high-frequency signal lines of the DMI interface are connected one-to-one to the corresponding signal lines of the HDMI to DP signal conversion processor.

[0029] The beneficial effects of the utility model are:

[0030] A multifunctional USB Type-C interface converter comprises a PD3.0 processor, two USB Type-C interfaces, an HDMI interface and a USB2 interface; the first USB Type-C interface is connected to a display, and the second USB Type-C interface is connected to a PD3.0 power supply; the PD3.0 processor converts an HDMI signal input from the HDMI interface into a DP signal compatible with the first USB Type-C interface by means of an HDMI to DP signal conversion processor; the USB2 interface inputs USB2 data and directly transmits it to the first USB Type-C interface; the PD3.0 processor controls the detection of the connection status and working mode of the display, requests the corresponding mode from a computer and a PD power supply, and outputs the corresponding video mode to the display through HDMI conversion DP; the traditional USB2 signal, HDMI signal and Type-C PD charging can be converted into a single Type-C interface, the single Type-C interface can support both video and USB2 data transmission and PD charging function at the same time, can charge a computer at 20V according to the PD3.0 specification, and can retain all the original functions, and at the same time, the structure is simple and compact, the circuit of the product is simplified, and the attenuation of signal transmission is reduced to a minimum. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 The figure is a schematic diagram of the circuit structure principle of a multifunctional USB Type-C interface converter according to a first embodiment of the utility model. DETAILED DESCRIPTION

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0034] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0035] like Figure 1 As shown, in order to provide a multifunctional USB Type-C interface converter, the overall planning scheme of the utility model is: in order to adapt to the development trend of cutting-edge new technologies and new products in the industry, it is necessary to develop a converter that can simultaneously support video transmission, USB2 data transmission, and PD charging functions, and integrate the above multiple functions into one, so that the traditional USB2 signal interface, HDMI signal interface, and Type-C PD charging interface can be integrated into a single Type-C interface. Through a single Type-C interface, it can support both video and USB2 data transmission and PD charging function at the same time. It can charge the computer at 20V according to the PD3.0 specification and retain all the original functions. At the same time, the structure is simple and compact, the circuit of the product is simplified, and the attenuation of signal transmission is reduced to a minimum. It can be used for educational display or painting, etc., and can also be used for VR glasses.

[0036] The specific technical solutions and principles are as follows:

[0037] A multifunctional USB Type-C interface converter has a core structure with a PD3.0 processor, the PD3.0 processor is connected to a plurality of data interfaces, and the plurality of data interfaces include at least two USB Type-C interfaces, an HDMI interface and a USB2 interface.

[0038] The first USB Type-C interface P4 can be connected to a display, and the second USB Type-C interface 3 can be connected to a PD3.0 power supply; the PD3.0 processor has a built-in HDMI to DP signal conversion processor, which can convert the HDMI signal input by the HDMI interface P2 into a DP signal compatible with the first USB Type-C interface 4; USB2 data can be input through the USB2 interface P1 and directly transmitted to the first USB Type-C interface 4.

[0039] The PD3.0 processor can control and detect the connection status and working mode of the monitor, request the corresponding mode from the computer and PD power supply, and convert the corresponding video mode of DP output to the monitor through the HDMI interface P2.

[0040] Furthermore, the USB2 interface P1 is directly connected to the first USB Type-C interface P4 through a signal line; the USB2 interface P1 is connected to the PD3.0 processor through the first Vbus line P1_VBUS; the PD3.0 processor can detect the access status of the USB2 interface P1 and convert the access status of the USB2 interface P1 into DP configuration information of the first USB Type-C interface P4.

[0041] The PD3.0 processor is connected to the first USB Type-C interface P4 and the second USB Type-C interface P3 through the CC control line; the second USB Type-C interface P3 is connected to the first USB Type-C interface P4 through the second Vbus line P3_VBUS.

[0042] A switch module and a buck module are set on the second Vbus line P3_VBUS; the switch module is connected to the PD3.0 processor and is controlled to be turned on or off by the PD3.0 processor; the buck module can buck the Vbus power input from the second USB Type-C interface P3 into a low voltage.

[0043] The switch module is provided with two switches in opposite directions at the same time, and the two switches are connected in series on the second Vbus line P3_VBUS; the buck module is connected to the position between the two switches on the second Vbus line through the BUS_M segment of the second Vbus line. The buck module can buck the Vbus power input from the first USB Type-C interface P3 into 3.3V, 1.8V and 1.2V voltages.

[0044] The buck module specifically consists of a first voltage regulator, a second voltage regulator and a third voltage regulator. The first voltage regulator is a synchronous buck regulator using SY8201CABC input, and the second and third voltage regulators are both JW5250ASOTA buck switching regulators. The second and third voltage regulators are connected in parallel and connected to the second Vbus line through the first voltage regulator; the Vbus power input from the first USB Type-C interface can be bucked and converted to a 3.3V low voltage through the first voltage regulator, the Vbus power input from the first USB Type-C interface can be bucked and converted to a 1.2V low voltage through the second voltage regulator, and the Vbus power input from the first USB Type-C interface can be bucked and converted to a 1.8V low voltage through the third voltage regulator.

[0045] Both the first USB Type-C interface P4 and the second USB Type-C interface P3 support PD3.0 communication. PD3.0 communication is backward compatible with PD2.0 communication. The first USB Type-C interface P4 supports DP Alt-mode signal mode.

[0046] Finally, the high-frequency signal lines of the first USB Type-C interface P4 are connected one-to-one to the corresponding signal lines of the HDMI to DP signal conversion processor, and the P4_CC1 pins of the first USB Type-C interface P4 are connected to the PD3.0 processor, so that the PD3.0 processor can communicate with the display through the first USB Type-C interface P4;

[0047] The P3_CC1 pin of the second USB Type-C interface P3 is connected to the PD3.0 processor, so that the PD3.0 processor can communicate with the PD power source through the second USB Type-C interface P3;

[0048] The high-frequency signal lines of the DMI interface P2 are connected one-to-one to the corresponding signal lines of the HDMI to DP signal conversion processor.

[0049] The utility model discloses a multifunctional USB Type-C interface converter, comprising a PD3.0 processor, two USB Type-C interfaces, an HDMI interface and a USB2 interface; the first USB Type-C interface is connected to a display, and the second USB Type-C interface is connected to a PD3.0 power supply; the PD3.0 processor converts an HDMI signal input by the HDMI interface into a DP signal adapted to the first USB Type-C interface by means of an HDMI to DP signal conversion processor provided therein; the USB2 interface inputs USB2 data and directly transmits it to the first USB Type-C interface; the PD3.0 processor controls the detection of the connection status and working mode of the display, requests the corresponding mode from the computer and the PD power supply, and outputs the corresponding video mode to the display through HDMI conversion of the DP; the traditional USB2 signal, HDMI signal and Type-C PD charging can be converted into a single Type-C interface, the single Type-C interface can support both video and USB2 data transmission and PD charging function at the same time, can charge the computer at 20V according to the PD3.0 specification, and can retain all the original functions, and at the same time, the structure is simple and compact, the circuit of the product is simplified, and the attenuation of the signal transmission is reduced to a minimum.

[0050] Embodiment 1:

[0051] The multifunctional USB Type-C interface converter of the first embodiment is, in actual operation, essentially a multifunctional USB Type-C interface converter that can convert HDMI+USB2+Type-C PD into Type-C three-in-one cable and can convert multiple serial port signals into Type-C serial port data.

[0052] The specific technical solution of embodiment 1 is as follows:

[0053] In order to solve the technical problem that the traditional USB2 signal, HDMI signal, and Type-C PD charging in the prior art cannot be aggregated into one interface for transmission, and the computer cannot be charged at 20V according to the PD3.0 specification while retaining the HDMI video and USB2 functions, a converter that supports video, USB2 data, and PD charging is provided, that is, a multifunctional USB Type-C interface converter, the core structure of which is a PD3.0 processor, and the PD3.0 processor is provided with two USB Type-C interfaces, wherein the P4-end USB Type-C interface (the first USB Type-C interface P4) is used to connect to the display, and the P3-end USB Type-C interface (the first USB Type-C interface P3) is used to connect to the PD3.0 power supply; the PD3.0 processor has a built-in HDMI to DP signal conversion processor, which is responsible for converting the HDMI signal in the P2-end HDMI interface (HDMI interface P2) into the DP signal of the Type-C interface at the P4 end; USB2 data P1 is also provided to transfer the USB2 data of the USB2 interface at the P1 end to the Type-C interface at the P4 end.

[0054] The PD3.0 processor is connected to the USB Type-C interface of P3 and P4 through the CC control line, and a switch and a buck module are set on the Vbus line. The switch is controlled by the PD3.0 processor to turn on and off; the buck module converts the Vbus power input from the USB Type-C interface at the P3 end into a low voltage, and connects it to the PD3.0 processor and the HDMI to DP signal conversion processor through the 3.3V / 1.8V / 1.2V pins;

[0055] The HDMI to DP signal conversion processor converts the HDMI signal in the HDMI interface on the P2 end into the DP signal of the Type-C interface on the P4 end, and transmits it to the display through the USB Type-C interface on the P4 end.

[0056] The USB2 data is transmitted to the display through the USB2 data of the USB2 interface at the P1 end and the USB Type-C interface in P4; the high-frequency signal lines of the P4 USB Type-C interface are connected one-to-one to the corresponding signal lines of the HDMI to DP signal conversion processor, so that the HDMI to DP signal conversion processor can control and process the DP signal at the P4 end.

[0057] The P3_CC1 pin of the P3-side USB Type-C interface is connected through the PD3.0 processor, so that the PD3.0 processor can control the P3-side USB Type-C interface to communicate with the P3-side PD power supply through the P3_CC1 pin.

[0058] The P4_CC1 pin of the P4-side USB Type-C interface is connected through the PD3.0 processor pugm, so that the PD3.0 processor can control the P4-side USB Type-C interface to communicate with the P4-side display through the P4_CC1 pin.

[0059] The high-frequency signal lines of the HDMI interface at the P2 end are connected one-to-one to the corresponding signal lines of the HDMI to DP signal conversion processor, so that the HDMI to DP signal conversion processor can control and process the HDMI signal at the P2 end.

[0060] The signal lines of the USB2 interface at the P1 end are connected one-to-one to the corresponding signal lines of the USB Type-C interface at the P4 end, so that the P4 end can directly obtain the USB2 signal at the P1 end.

[0061] The PD3.0 processor is connected to the P4_CC1 pin of the USB Type-C interface on the P4 side through the P4_CC1 pin, and the PD3.0 processor is connected to the P3_CC1 pin of the USB Type-C interface on the P3 side through the P3_CC1 pin; the DP signal line on the P4 side is connected to the HDMI to DP signal conversion processor, and the HDMI signal line on the P2 side is connected to the HDMI to DP signal conversion processor. The USB2 signal line is connected from the P1 port to the P4 port. P4 supports video, USB2 data, and PD charging.

[0062] The PD3.0 processor is the LT6711A processor.

[0063] The output voltage of the USB Type-C port on the P4 side is 20V of the PD3.0 specification.

[0064] The step-down module is used to step down the Vbus power input from the USB Type-C interface at the P3 end and convert it into 3.3V, 1.8V, or 1.2V voltages.

[0065] Both the USB Type-C interface on the P3 side and the USB Type-C interface on the P4 side support PD3.0 communication, and PD3.0 communication is backward compatible with PD2.0 communication.

[0066] The USB Type-C port on the P4 side supports DP Alt-mode signal mode.

[0067] The USB Type-C port on the P3 side is connected to the PD3.0 power supply via a Type-C cable, and the USB Type-C port on the P4 side is connected to the monitor via a Type-C cable.

[0068] The buck module is the buck chip SY8201CABC, JW5250ASOTA.

[0069] The output power of the USB Type-C interface on the P4 side is 5-100W, and the input power of the USB Type-C interface on the P3 side is 5-100W.

[0070] The DP configuration information (DP configure message) of the USB Type-C interface on the P4 side allows the display side to identify whether the product is connected and whether the USB2 signal is connected.

[0071] After the USB2 of P1 is connected, the 0 state of Bit7 in the DP configuration information of the PD protocol converted to P4 through the main control chip detection indicates that there is no P1 connection, and the 1 state indicates that there is P1 connection. The 0 state of Bit7 in the DP configuration information of the PD protocol of the main control chip indicates that the product is not connected, and the 1 state indicates that the product is connected.

[0072] The definition is as follows:

[0073]

[0074]

[0075] The USB Type-C port on the P4 side supports DP Alt Mode signal output up to 4K@60Hz.

[0076] The specific working principle is as follows:

[0077] like Figure 1 As shown, the core structure uses a PD3.0 processor and an HDMI signal to DP signal processor. The PD3.0 processor is provided with a USB Type-C interface, wherein the P4-end USB Type-C interface is used to connect to the display, and the P3-end USB Type-C interface is used to connect to the PD3.0 power supply.

[0078] The PD3.0 processor is connected to the P3-end USB Type-C interface through the P3-end Vbus line. A switch and a buck module are set on the P3-end Vbus line. The switch is controlled to be turned on and off by the PD3.0 processor; the buck module is used to connect to the PD3.0 processor through 3.3V, 1.8V, and 1.2V pins.

[0079] The high-frequency signal lines of the USB Type-C interface at the P4 end are connected one-to-one to the corresponding signal lines of the HDMI signal conversion DP signal processor, namely: the USB Type-C interface at the P4 end is connected to the TX1 pin of the HDMI signal conversion DP signal processor through the TX1 pin, the USB Type-C interface at the P4 end is connected to the RX1 pin of the HDMI signal conversion DP signal processor through the RX1 pin, the USB Type-C interface at the P4 end is connected to the TX2 pin of the HDMI signal conversion DP signal processor through the TX2 pin, the USB Type-C interface at the P4 end is connected to the RX2 pin of the HDMI signal conversion DP signal processor through the RX2 pin, the USB Type-C interface at the P4 end is connected to the SBU1 pin of the HDMI signal conversion DP signal processor through the SUB1 pin, and the USB Type-C interface at the P4 end is connected to the SBU2 pin of the HDMI signal conversion DP signal processor through the SBU2 pin.

[0080] The high-frequency signal lines of the HDMI interface at the P2 end are connected one-to-one to the corresponding signal lines of the HDMI signal conversion DP signal processor, that is: the HDMI interface at the P2 end is connected to the D0 pin of the HDMI signal conversion DP signal processor through the D0 pin, the HDMI interface at the P2 end is connected to the D1 pin of the HDMI signal conversion DP signal processor through the D1 pin, the HDMI interface at the P2 end is connected to the D3 pin of the HDMI signal conversion DP signal processor through the D3 pin, the USB Type-C interface at the P2 end is connected to the CK pin of the HDMI signal conversion DP signal processor through the CK pin, the USB Type-C interface at the P2 end is connected to the SCL pin of the HDMI signal conversion DP signal processor through the SCL pin, the USB Type-C interface at the P2 end is connected to the SDA pin of the HDMI signal conversion DP signal processor through the SDA pin, and the USB Type-C interface at the P2 end is connected to the HPD pin of the HDMI signal conversion DP signal processor through the HPD pin.

[0081] The D+ / D- lines and P1_Vbus lines of the USB2 interface at the P1 end are connected to the corresponding signal lines of the P4 USB Type-C port one by one, that is, the USB2 interface at the P1 end is connected to the D+ pin of the P4 USB Type-C port through the D+ pin, the USB2 interface at the P1 end is connected to the D- pin of the P4 USB Type-C port through the D- pin, and the USB2 interface at the P1 end is connected to the P1_Vbus pin of the PD3.0 processor port through the P1_Vbus pin.

[0082] When the PD3.0 processor detects the PDO sent from the USB Type-C at the P3 end, the PD3.0 processor will first read and store it inside the chip; when the PD3.1 processor detects that the USB Type-C interface P4_CC1 at the P4 end is connected, the PDO read from P3 will be forwarded to the USB Type-C at the P4 end. If the USB Type-C at the P4 end requests any gear PDO, the PD3.0 processor will forward the request information to the USB Type-C at the P3 end, thereby realizing the PDO forwarding processing; the HDMI signal to DP signal processor processes the HDMI signal at the P2 end and converts it into a DP signal and outputs it to the P4 end; the USB2 signal at the P1 end is connected to the P4 end; in this way, the video, USB2 data, and PD charging can be collectively transmitted to the USB Type-C interface at the P4 end.

[0083] When the PD3.0 processor detects that the USB2 interface at the P1 end sends a high voltage, indicating that the USB2 port is connected, the DP configuration message of the USB Type-C interface at the P4 end sets Bit7 to 1. When the PD3.0 processor detects that the USB2 interface at the P1 end sends a low level, indicating that the USB2 port is unplugged, the DP configuration message of the USB Type-C interface at the P4 end sets Bit7 to 0, thereby enabling the USB Type-C interface at the P4 end to identify whether the USB2 signal is connected through the DP configuration message, allowing the display to determine whether to start the touch screen function, etc.

[0084] Write the DP configure message of the USB Type-C interface on the P4 end into the PD3.0 processor and set Bit6 to 1. After the USB Type-C interface on the P4 end is connected to the monitor, the monitor can identify whether the product is connected through the DP configuration message (configuremessage).

[0085] The USB Type-C interface at the P3 end is connected to the PD3.0 processor through the P3_CC1 pin, which is used to communicate with the PD3.0 power adapter and request the adapter to output 20V 5A 100W. The PD3.0 processor communicates with the computer through P4_CC1, and then turns on the switch to deliver 20V 5A 100W power to the monitor at the USB Type-C interface end of the P4 end for charging.

[0086] The USB Type-C interface at the P4 end is connected to the PD3.0 processor through the P4_CC1 pin, which is used to communicate with the Type-C display connected to the USB Type-C interface at the P4 end to obtain the signal mode and power mode required by the Type-C display. The PD3.0 processor then communicates with the power supply through P3_CC1 and transmits the corresponding signal mode to the computer through the TMDS signal at the P2 end, thereby realizing the transmission of video and charging.

[0087] The USB2 interface at the P2 end is directly connected to the D+ / D- of the USB Type-C interface at the P4 end to realize the direct transmission of USB2 signals.

[0088] After the PD communication at the P3 end establishes the power PDO connection with the PD communication at the P4 end, the switch is turned on and the power flows from P3_Vbus to P4_Vbus.

[0089] The PD3.0 processor is the LT6711A processor.

[0090] The PD3.0 processor and HDMI to DP signal conversion processor detect the connection status and working mode of the display and request the corresponding mode from the computer and PD power supply;

[0091] When the USB Type-C interface on the P3 end is connected to a power source, the PD3.0 processor is powered and starts working. It first detects whether the Type-C interface on the P4 end is connected to a Type-C display through P4_CC1; if the Type-C interface on the P4 end is connected to a Type-C display, P4_CC1 will establish PD communication with the display and forward the PDO obtained by the USB Type-C interface on the P3 end to the Type-C display on the P4 end; when the display receives the PDO and requests the corresponding gear position, P4_CC1 on the P4 end will forward the request to the PD power supply on the P3 end, thereby realizing the forwarding of PDO.

[0092] The PD3.0 processor will request the corresponding signal mode from the computer according to the signal mode supported by the Type-C display of the Type-C interface on the P4 end.

[0093] The output voltage of the USB Type-C interface at the P4 end is the maximum 20V of the PD3.0 specification.

[0094] The step-down module converts the Vbus power input from the USB Type-C interface at the P3 end into 3.3V / 1.8V / 1.2V voltage.

[0095] Both the USB Type-C interface on the P3 side and the USB Type-C interface on the P4 side support PD3.0 communication, and PD3.0 communication is backward compatible with PD2.0 communication.

[0096] The USB Type-C port on the P4 side supports DP Alt-mode signal mode.

[0097] The USB Type-C port on the P4 side also supports standard DP Alt-mode communication.

[0098] The USB Type-C port on the P3 end is connected to the PD3.0 power supply via a Type-C cable, and the USB Type-C port on the P4 end is connected to the Type-C display via a Type-C cable. The USB Type-C ports on the P3 and P4 ends are an integrated Type-C cable with wires, which makes the product have good integrity.

[0099] The output power of the USB Type-C interface at the P4 end is 5 to 100 W. The buck module uses buck chips SY8201CABC and JW5250ASOTA.

[0100] The utility model supports a converter integrating video, USB2 data, and PD charging, adopts LT6711A as a PD3.0 processor and an HDMI to DP signal converter, two USB Type-C interfaces of the PD3.0 processor are respectively connected to a display and a PD3.0 power supply, and the PD3.0 processor controls the on-off of the Vbus line of the PD3.0 power supply and the Vbus line of the display; the PD3.0 processor requests a corresponding mode from a computer by detecting the connection status and working mode of the display, and processes the DP signal through the HDMI to DP signal converter for transmission, and the USB2 signal is connected from the computer to the USB Type-C interface at the P4 end; the traditional USB2 signal, HDMI signal, and Type-C PD charging can be converted into a single Type-C interface, and the single Type-C interface can support both video and USB2 data transmission and PD charging function at the same time, and can charge the computer with 20V according to the PD3.0 specification, and can retain all the original functions, and at the same time, the structure is simple and compact, the circuit of the product is simplified, and the attenuation of signal transmission is reduced to a minimum.

[0101] like Figure 1As shown, the utility model provides a converter that supports video, USB2 data, and PD charging in one, which can convert traditional USB2 signals, HDMI signals, and Type-C PD charging into a single Type-C interface. The single Type-C interface can support both video and USB2 data transmission and PD charging function at the same time. It can charge the computer at 20V according to the PD3.0 specification and retain all the original functions.

[0102] The utility model uses LT6711A as a PD3.0 processor. LT6711A supports PD communication of two USB Type-C interfaces, wherein the P4-end USB Type-C interface is connected to the display, and the P3-end USB Type-C interface is connected to the PD power supply, specifically the PD3.0 power supply; both interfaces support PD3.0 and PD2.0 communication. The P4-end USB Type-C interface supports the DP Alt-mode signal mode. Through the utility model, all functions of traditional USB2 signals, HDMI signals, and Type-C PD charging can be retained, and at the same time, the PD3.0 display can be charged with 20V according to the PD3.0 specification, and the standard DP Alt-mode signal can be output at the same time, and the traditional USB2 signals, HDMI signals, and Type-C PD charging are integrated into a Type-C interface that supports all functions.

[0103] From the product features, if the P3-end USB Type-C interface of the present invention is not connected to the PD3.0 power supply, then the present invention will lose its meaning. Therefore, the present invention is designed so that the P3-end USB Type-C interface will not work if it is not connected to the power supply, which can simplify the working logic of the product.

[0104] A step-down chip SY8201CABC that can withstand 20V input is added to the Vbus line of the P3 end USB Type-C interface of the utility model to convert the Vbus power supply into 3.3V / 1.8V / 1.2V power supply for the chip of the utility model.

[0105] Through the design scheme shown above, the circuit is simplified from the hardware point of view, the power loss and signal attenuation are reduced. From the firmware point of view, various working modes and various connection situations of the monitor and the computer are designed in, and the corresponding actions are executed to make the monitor work as if it is directly connected to the computer, so that all the functions of the monitor can work normally.

[0106] Through the utility model scheme demonstrated above, the traditional USB2 signal, HDMI signal, and Type-C PD charging can be converted into a single Type-C interface through the utility model. The single Type-C interface can support both video and USB2 data transmission and PD charging function at the same time. It can charge the display with 20V according to the PD3.0 specification and retain all the original functions.

[0107] The above content is only used to illustrate the technical solution of the utility model rather than to limit it. The utility model is not limited to the above optional implementation modes. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field, regardless of any changes in its shape or structure, should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A multifunctional USB Type-C interface converter, characterized in that: A PD3.0 processor is included, wherein the PD3.0 processor is connected to a plurality of data interfaces, wherein the plurality of data interfaces include at least two USB Type-C interfaces, one HDMI interface and one USB2 interface; The first USB Type-C interface is used to connect to a display, and the second USB Type-C interface is used to connect to a PD3.0 power source; The PD3.0 processor is provided with an HDMI to DP signal conversion processor, and the HDMI to DP signal conversion processor is used to convert the HDMI signal input by the HDMI interface into a DP signal compatible with the first USB Type-C interface; The USB2 interface is used to input USB2 data and directly transmit it to the first USB Type-C interface; The PD3.0 processor is used to control and detect the connection status and working mode of the display, request the corresponding mode from the computer and PD power supply, and convert the corresponding video mode of DP output to the display through HDMI.

2. The multifunctional USB Type-C interface converter according to claim 1, characterized in that: The USB2 interface is directly connected to the first USB Type-C interface via a signal line; the USB2 interface is connected to the PD3.0 processor via a first Vbus line; The PD3.0 processor is used to detect the access status of the USB2 interface and convert the access status of the USB2 interface into DP configuration information of the first USB Type-C interface.

3. The multifunctional USB Type-C interface converter according to claim 1, characterized in that: The PD3.0 processor is connected to the first USB Type-C interface and the second USB Type-C interface through a CC control line; the second USB Type-C interface is connected to the first USB Type-C interface through a second Vbus line.

4. The multifunctional USB Type-C interface converter according to claim 3, characterized in that: The second Vbus line is provided with a switch module and a voltage reduction module; The switch module is connected to the PD3.0 processor and is controlled to be turned on or off by the PD3.0 processor; The step-down module is used to step down the Vbus power input from the second USB Type-C interface and convert it into a low voltage.

5. The multifunctional USB Type-C interface converter according to claim 4, characterized in that: The switch module includes two switches, which are connected in series to the second Vbus line; the step-down module is connected to the second Vbus line at a position between the two switches.

6. The multifunctional USB Type-C interface converter according to claim 4, characterized in that: The step-down module is used to step down the Vbus power input from the first USB Type-C interface and convert it into 3.3V, 1.8V and 1.2V voltages.

7. The multifunctional USB Type-C interface converter according to claim 4, characterized in that: The step-down module includes a first voltage stabilizer, a second voltage stabilizer and a third voltage stabilizer, wherein the second voltage stabilizer and the third voltage stabilizer are connected in parallel and then connected to a second Vbus line via the first voltage stabilizer; The first regulator is used to step down the Vbus power input of the first USB Type-C interface and convert it into a low voltage of 3.3V. The second regulator is used to step down the Vbus power input of the first USB Type-C interface and convert it into a low voltage of 1.2V. The third regulator is used to step down the Vbus power input of the first USB Type-C interface and convert it into a low voltage of 1.8V.

8. The multifunctional USB Type-C interface converter according to claim 7, characterized in that: The first regulator is a SY8201CABC input synchronous buck regulator, and the second and third regulators are both JW5250ASOTA buck switching regulators.

9. The multifunctional USB Type-C interface converter according to claim 1, characterized in that: The first USB Type-C interface and the second USB Type-C interface both support PD3.0 communication, PD3.0 communication is backward compatible with PD2.0 communication, and the first USB Type-C interface supports DP Alt-mode signal mode.

10. The multifunctional USB Type-C interface converter according to claim 9, characterized in that: The high-frequency signal lines of the first USB Type-C interface are connected one-to-one to the corresponding signal lines of the HDMI to DP signal conversion processor, and the P4_CC1 pins of the first USB Type-C interface are connected to the PD3.0 processor, so that the PD3.0 processor can communicate with the display through the first USB Type-C interface; The P3_CC1 pin of the second USB Type-C interface is connected to the PD3.0 processor, so that the PD3.0 processor can communicate with the PD power supply through the second USB Type-C interface; The high-frequency signal lines of the DMI interface are connected one-to-one to the corresponding signal lines of the HDMI to DP signal conversion processor.

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