Industrial-grade USB HUB conversion device

Abstract

The invention discloses an industrial-grade USB HUB conversion device, and the device comprises an uplink input port circuit module which is connected with external equipment, and is used for receiving a USB signal inputted by the external equipment; the USB HUB conversion circuit module is used for converting the USB signal received by the uplink input port circuit module and outputting the converted USB signal to four paths of USB downlink ports; the downlink port connection equipment interface module is used for transmitting USB signals output by the four paths of USB downlink ports to equipment connected with the downlink port connection equipment interface module; and the power conversion circuit module is used for converting an external direct current voltage into a target direct current voltage and providing electric energy for the USB HUB conversion circuit module and the four-path USB downlink port. Through the scheme of the invention, a single-path USB3.0 interface is converted into four-path USB3.0 interfaces, so that the access requirement of equipment can be met; and meanwhile, the heat generated by the conversion chip provides a suitable working temperature for the interface, so that the requirement that the USB3.0 interface cannot be used at the low temperature of-20 DEG C to-40 DEG C is met.

Description

Technical Field

[0001] The present application relates to the field of USB interfaces, and in particular to an industrial-grade USB HUB conversion device. Background Art

[0002] In the prior art, USB interfaces are widely used at present, but the prior art USB interfaces cannot work in the whole vehicle under special temperature environment. As a result, the USB_HUB on the market at present does not work properly under low temperature environment of -40℃ to -20℃, and some even cannot work. Summary of the invention

[0003] The purpose of this application is to provide an industrial-grade USB HUB conversion device, which, on the one hand, converts a single-channel USB3.0 interface into a 4-channel USB3.0 interface to meet the access requirements of the device; on the other hand, the heat generated by the conversion chip provides a suitable working temperature for the interface, thereby meeting the requirement that the USB3.0 interface cannot be used at low temperatures of -20°C to -40°C, and can efficiently transmit USB3.0 data signals in a temperature environment of -40°C to 85°C.

[0004] To achieve the above objectives, this application provides the following solutions:

[0005] In a first aspect, the present application provides an industrial-grade USB HUB conversion device, comprising:

[0006] An upstream input port circuit module is used to connect to an external device and receive a USB signal input by the external device;

[0007] A USB HUB conversion circuit module, used for converting the USB signal received through the upstream input port circuit module and outputting it to the 4-way USB downstream ports;

[0008] A downstream port connection device interface, used to transmit the USB signals output by the four USB downstream ports to a device connected to the downstream port connection device interface;

[0009] The power conversion circuit module is used to convert the external DC voltage into a target DC voltage, and provide power to the USB HUB conversion circuit module and the 4-way USB downstream ports.

[0010] Optionally, the USB HUB conversion circuit module includes: a signal receiving circuit, used for receiving the USB signal from the upstream input port circuit module;

[0011] The conversion chip outputs the USB signal to the 4-way USB downstream ports through switching control.

[0012] Optionally, the USB HUB conversion circuit module further includes:

[0013] A storage module, used for storing communication firmware for establishing communication with an external device;

[0014] When the conversion chip recognizes that the communication firmware establishes communication with the external device, the USB signal is output to the 4-way USB downstream port through exchange control.

[0015] Optionally, the USB HUB conversion circuit module further includes: a filter circuit unit, which is arranged between the power conversion circuit module and the USB HUB conversion circuit module and is used to filter the power provided by the power conversion circuit module.

[0016] Optionally, the filter circuit unit is composed of an inductor L9, a capacitor C185, a capacitor C186, and a capacitor C187; wherein the capacitors C185, C186, and C187 are connected in parallel, and the capacitors C185, C186, and C187 are connected in series with the inductor L9.

[0017] Optionally, the USB HUB conversion circuit module further includes: a clock circuit unit, configured to provide a clock signal for the USB HUB conversion circuit module.

[0018] Optionally, a common-mode inductor and pull-up and pull-down resistors are arranged in series on the communication bus between the 4-way USB downstream ports and the downstream port connection device interface for propagating resistance noise signals to enhance the anti-interference of the communication bus.

[0019] Optionally, the four USB downstream ports are respectively provided with an electrostatic protection chip for preventing static electricity from causing electrostatic interference to the USB HUB conversion circuit through the four USB downstream ports.

[0020] Optionally, the power conversion circuit module includes:

[0021] A switching regulator is used to stably output power that meets the target working requirements;

[0022] The synchronous buck converter is used for converting the voltage of the external input DC power supply into a target voltage.

[0023] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0024] The present application provides an industrial-grade USB HUB conversion device, which, on the one hand, converts a single-channel USB 3.0 interface into a 4-channel USB 3.0 interface to meet the access requirements of the device; on the other hand, the heat generated by the conversion chip provides a suitable working temperature for the interface, thereby meeting the requirement that the USB 3.0 interface cannot be used at low temperatures of -20°C to -40°C, and can efficiently transmit USB 3.0 data signals in a temperature environment of -40°C to 85°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of an industrial-grade USB HUB conversion device provided in an embodiment of the present application;

[0027] Figure 2 A circuit diagram of an uplink input port circuit module provided in an embodiment of the present application;

[0028] Figure 3 A circuit diagram of a signal receiving circuit provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of a chip interface of a conversion chip provided in an embodiment of the present application;

[0030] Figure 5 A circuit diagram of a storage module provided in an embodiment of the present application;

[0031] Figure 6 A circuit diagram of a switching regulator provided in an embodiment of the present application;

[0032] Figure 7 A circuit diagram of a synchronous buck converter provided in an embodiment of the present application;

[0033] Figure 8 A circuit diagram of a filter circuit unit provided in an embodiment of the present application;

[0034] Fig. 9 A circuit diagram of a clock circuit unit provided in an embodiment of the present application;

[0035] Figures 10A-10D A circuit diagram of an electrostatic protection chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] refer to Figure 1 As shown, the present application provides an industrial-grade USB HUB conversion device, including: an upstream input port circuit module, a USB HUB conversion circuit module, a downstream port connection device interface module and a power conversion circuit module.

[0039] Among them, the USB HUB conversion circuit module is respectively connected to the upstream input port circuit module and the downstream port connection device interface module, and is used to convert the USB signal received by the upstream input port circuit module from the external device into 4 USB signals and then transmit them to the downstream port connection device interface module; the power conversion circuit module and the USB HUB conversion circuit module are used to convert the external DC power into the target power required by the USB HUB conversion circuit module, and provide it to the USB HUB conversion circuit module.

[0040] In the embodiment of the present application, the industrial-grade USB HUB conversion device of the present application is connected to an external device through an upstream input port circuit module, receives a USB signal input by the external device, and sends the received USB signal to the USB HUB conversion circuit module. In the present embodiment, in order to facilitate application to different devices, the upstream input port circuit module not only adopts the standard USB universal interface, but also further adopts other universal standard interfaces, such as TYPE-C standard interface, Lightning interface, etc. In order to facilitate application to niche device interfaces, further, it also adopts multiple other non-standard interfaces, such as: VGA interface, DVI interface and DisplayPort interface, etc.

[0041] refer to Figure 2 As shown, in an exemplary embodiment, the upstream input port circuit module communicates with the external device through the USB3.0 interface, and after receiving the USB signal input by the external device, further adopts the following Figure 2The DF11-10DP-2DSA wire-to-board connector shown transmits the USB signal received from the external device to the USB HUB conversion circuit module. Specifically, the received USB2.0 signal is transmitted through the USBDP P and USBDP N interfaces, and the received USB3.0 signal is transmitted through the two pairs of differential signal interfaces SSRX0 N, SSRX0 P and SSTX0 N, SSTX0 P.

[0042] In the embodiment of the present application, after receiving the USB signal transmitted by the upstream input port circuit module, the USB HUB conversion circuit module converts the USB signal into 4 USB signals for output. Specifically, the USB HUB conversion circuit module is composed of a resistor R135 and a capacitor C170. Figure 3 The signal receiving circuit shown receives the USB signal from the upstream input port circuit module and is used to filter out the noise signal in the USB signal transmitted by the upstream input port circuit module.

[0043] Furthermore, the signal receiving circuit transmits the USB signal after filtering out the noise signal to the Figure 4 The conversion chip shown in the figure is used to convert the USB signal into 4-way USB signals and transmit them to the 4-way USB downstream ports through four interfaces, namely USB1D P, USB1D N, USB2D P, USB2D N, USB3D P, USB3D N, USB4D P, and USB4D N. In this embodiment, the USB HUB conversion circuit module is also provided with a communication firmware for establishing communication with an external device, such as Figure 5 The storage module shown, after receiving the USB signal, the conversion chip establishes communication with the external host by identifying the firmware information stored in the storage module, and then outputs the USB signal to the 4-way USB downstream port through the exchange control logic inside the conversion chip. In the embodiment of the present application, the signal receiving circuit, the conversion chip and the 4-way USB downstream port in the USB HUB conversion circuit module are packaged on the same circuit board and in the same working space. Therefore, when the conversion chip converts the received USB signal, the corresponding heat is generated synchronously to provide the 4-way USB downstream port with the required working temperature environment, thereby ensuring that the industrial-grade USB HUB conversion board can still maintain normal working state in a low temperature environment of -20°C to -40°C.

[0044] In an embodiment of the present application, the downstream port connection device interface module is connected to the 4-way USB downstream port in the USB HUB conversion circuit module through a bus, and the 4-way USB signals output by the USB HUB conversion circuit module are transmitted to the USB devices respectively connected to the downstream port connection device interfaces.

[0045] In the embodiment of the present application, since the USB HUB conversion circuit module needs to provide additional power when performing conversion work, the power conversion circuit module is set to convert the external DC power supply so that the voltage and current of the input power supply can meet the working requirements of the USB HUB conversion circuit. In an exemplary embodiment, the power conversion circuit module is provided with a switching regulator SiC477ED-T1-GE3 such as Figure 6 As shown, it is used to monitor the change of input voltage and adjust the switch tube in the circuit according to the set output voltage value, so as to achieve the purpose of stabilizing the output voltage, thereby ensuring that the USB HUB conversion circuit module can work under the target working voltage environment. Further, the power conversion circuit module also sets a synchronous buck converter TPS54620RGYR as shown in FIG. Figure 7 As shown, the voltage and current of the input DC power supply are stepped down and reduced, so that the DC voltage and current output by the power conversion circuit module to the USB HUB conversion circuit module can meet the working requirements.

[0046] In an embodiment of the present application, the USB HUB conversion circuit module further includes a filter circuit unit, which is arranged between the power conversion circuit module and the USB HUB conversion circuit module, and is used to filter the power provided by the power conversion circuit module. Figure 8 As shown, the filter circuit unit is composed of an inductor L9, a capacitor C185, a capacitor C186, and a capacitor C187; wherein the capacitors C185, C186, and C187 are connected in parallel, and the capacitors C185, C186, and C187 are connected in series with the inductor L9.

[0047] refer to Fig. 9 As shown, in the embodiment of the present application, the USB HUB conversion circuit module further includes a clock circuit unit for providing a clock signal for the USB HUB conversion circuit module.

[0048] In an embodiment of the present application, a common-mode inductor and pull-up and pull-down resistors are arranged in series on the communication bus between the four USB downstream ports and the downstream port connection device interface for propagating resistance noise signals to enhance the anti-interference of the communication bus.

[0049] refer to Figures 10A-10D As shown, in the embodiment of the present application, the four USB downstream ports are respectively provided with an electrostatic protection chip for preventing static electricity from causing electrostatic interference to the USB HUB conversion circuit through the four USB downstream ports.

[0050] In summary, through the technical solution of this application, the industrial-grade USB_HUB conversion device, on the one hand, uses the domestic chip 39A16A as the core, which is a four-port USB3.0 hub solution that integrates USB3.0 / USB2.0 Hub controller, microprocessor, DCDC, EFUSE and charger circuit. It has high compatibility and is fully backward compatible with USB2.0 and USB1.1 specifications. It can operate at super speed (5Gbps), high speed (480Mbps), full speed (12Mbps) and low speed (1.5Mbps); it can replace the current USB3.0 hub with RTS54 series as the core in situ. Converting a single-channel USB3.0 interface into a 4-channel USB3.0 interface can meet the access needs of the device; on the other hand, the conversion device adopts a low-power design, small size, and an independent power supply system to meet its required working voltage and optimize and reasonably layout the power supply system. The heat generated by the chip is reasonably exported and naturally discharged through the air. It has strong adaptability to temperature and environment and can provide a suitable working temperature for the interface, thus meeting the demand that the USB3.0 interface cannot be used at low temperatures of -20℃ to -40℃, and can efficiently transmit USB3.0 data signals in a temperature environment of -40℃ to 85℃.

[0051] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. An industrial-grade USB HUB conversion device, characterized in that: The industrial-grade USB HUB conversion device includes: An upstream input port circuit module is used to connect to an external device and receive a USB signal input by the external device; A USB HUB conversion circuit module, used for converting the USB signal received through the upstream input port circuit module and outputting it to the 4-way USB downstream ports; A downstream port connection device interface module, used for transmitting the USB signals output by the four USB downstream ports to a device connected to the downstream port connection device interface module; The power conversion circuit module is used to convert the external DC voltage into a target DC voltage, and provide power to the USB HUB conversion circuit module and the 4-way USB downstream ports.

2. The industrial-grade USB HUB conversion device according to claim 1, characterized in that: The USB HUB conversion circuit module comprises: A signal receiving circuit, used for receiving the USB signal from the upstream input port circuit module; The conversion chip outputs the USB signal to the 4-way USB downstream ports through switching control.

3. The industrial-grade USB HUB conversion device according to claim 2, characterized in that: The USB HUB conversion circuit module further includes: A storage module, used for storing communication firmware for establishing communication with an external device; When the conversion chip recognizes that the communication firmware establishes communication with the external device, the USB signal is output to the 4-way USB downstream port through exchange control.

4. The industrial-grade USB HUB conversion device according to claim 1, characterized in that: The USB HUB conversion circuit module also includes: The filter circuit unit is arranged between the power conversion circuit module and the USB HUB conversion circuit module, and is used for filtering the power provided by the power conversion circuit module.

5. The industrial-grade USB HUB conversion device according to claim 4, characterized in that: The filter circuit unit is composed of an inductor L9, a capacitor C185, a capacitor C186, and a capacitor C187; The capacitors C185, C186 and C187 are connected in parallel, and the capacitors C185, C186 and C187 are connected in series with the inductor L9.

6. The industrial-grade USB HUB conversion device according to claim 2, characterized in that: The USB HUB conversion circuit module further includes: The clock circuit unit is used to provide a clock signal for the USB HUB conversion circuit module.

7. The industrial-grade USB HUB conversion device according to claim 1, characterized in that: A common mode inductor and pull-up and pull-down resistors are arranged in series on the communication bus between the 4-way USB downstream ports and the downstream port connection device interface for propagating resistance noise signals to enhance the anti-interference of the communication bus.

8. The industrial-grade USB HUB conversion device according to claim 1, characterized in that: The four USB downstream ports are respectively provided with an electrostatic protection chip for preventing static electricity from causing electrostatic interference to the USB HUB conversion circuit through the four USB downstream ports.

9. The industrial-grade USB HUB conversion device according to claim 1, characterized in that: The power conversion circuit module comprises: A switching regulator is used to stably output power that meets the target working requirements; The synchronous buck converter is used for converting the voltage of the external input DC power supply into a target voltage.

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