CN211427334U - Interface device, interface conversion device and graphic signal generator - Google Patents
Interface device, interface conversion device and graphic signal generator Download PDFInfo
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- CN211427334U CN211427334U CN202021580161.XU CN202021580161U CN211427334U CN 211427334 U CN211427334 U CN 211427334U CN 202021580161 U CN202021580161 U CN 202021580161U CN 211427334 U CN211427334 U CN 211427334U
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Abstract
The utility model discloses a support high-speed USB TYPE-C's of bidirectional transmission interface device, interface conversion equipment and graphics signal generator. The interface device includes: the device comprises a control module, a power supply module, an interface identification module and a USB TYPE-C interface; control module includes power control pin and input, interface identification module's one end with USBTYPE-C interface connection, interface identification module's the other end with control module's input is connected, power module one end with control module's power control pin is connected, power module's the other end with USBTYPE-C interface connection. The utility model discloses can realize two-way confession and receive the electricity.
Description
Technical Field
The utility model belongs to the technical field of the USB transmission, more specifically relates to a support high-speed USBTYPE-C's of bidirectional transmission interface device, interface conversion equipment and graphics signal generator.
Background
In recent years, the USB TYPE-C interface has gained consistent praise from manufacturers and users once the USB TYPE-C interface is released after the positive and negative pluggable functions are added and the size of the interface is reduced on the basis of the universality of the original USB interface.
The USB TYPE-C interface can support 3.3-20V voltage negotiation under the latest power transmission protocol PD3.0 specification, and 100W maximum power bidirectional power supply is powered on, but the function is selectively supported by hardware manufacturers. For example, the current interface of the mobile phone only needs a power supply function, then a hardware manufacturer only develops a power supply circuit in a targeted manner, the circuit may only be powered by a charger, the mobile phone receives power in one-way transmission, and for example, a notebook computer needs to be charged by a USB TYPE-C interface, and the application is also one-way.
As shown in fig. 1, the interface circuit based on the USB TYPE-C interface in the prior art uses a dedicated PD control chip and a power supply chip. The special PD control chip uses the CC pin of the USB TYPE-C interface to negotiate the voltage, and a power supply chip is usually integrated in the special PD control chip. In addition to the above-described problem of unidirectional power supply or power reception, there are also the following problems. On one hand, the existing power supply chip only supports the power supply parameters required by part of communication protocols, and the requirements of some newly upgraded communication protocols cannot be met. On the other hand, the power supply chip is generally expensive, resulting in a high cost of the interface circuit.
SUMMERY OF THE UTILITY MODEL
At least one defect or improvement demand to prior art, the utility model provides a support high-speed USB TYPE-C's of two-way transmission interface device, interface conversion equipment and graphics signal generator adopts control module and power module's mode, can realize two-way power supply and receive the electric function.
To achieve the above object, according to the first aspect of the present invention, there is provided an interface device supporting bidirectional transmission high-speed USB TYPE-C, comprising: the device comprises a control module, a power supply module, an interface identification module and a USB TYPE-C interface; control module includes power control pin and input, interface identification module's one end with USBTYPE-C interface connection, interface identification module's the other end with control module's input is connected, power module one end with control module's power control pin is connected, power module's the other end with USBTYPE-C interface connection.
Preferably, the power module includes power network and power control module, power control module's first end with power network connects, power control module's second end with control module connects, power control module's third end with USB TYPE-C interface connection, power control module comprises parallelly connected power input submodule piece and power output submodule piece.
Preferably, the power output sub-module comprises a DC-DC module and an output voltage regulating circuit.
Preferably, the output voltage regulating circuit includes a plurality of series-connected voltage regulating resistors, and is a plurality of the voltage regulating resistors form a series branch, the first end of the series branch with the voltage regulating pin of the DC-DC module is connected, the first end of the series branch still through a resistor with the voltage output pin of the DC-DC module is connected, the second end of the series branch is grounded, and arbitrary two the first end of a switch, all of which are connected between the voltage regulating resistors respectively, the second end of the switch is grounded, and all the on-off of the switch is controlled by the control module.
Preferably, the power control module further includes a leakage circuit, and the leakage circuit is configured to discharge redundant power of the power input sub-module or the power output sub-module.
Preferably, the interface identification module is a dedicated PD control chip.
Preferably, the control module is an FPGA module.
According to the utility model discloses a second aspect provides a support high-speed USB TYPE-C's of bidirectional transfer interface conversion equipment, include: the device comprises a control module, a power supply module and an interface identification module; control module includes power control pin and input, interface identification module's one end and outside USB TYPE-C interface connection, interface identification module's the other end with control module's input is connected, power module one end with control module's power control pin is connected, power module's the other end with USB TYPE-C interface connection.
Preferably, the power module includes power network and power control module, power control module's first end with power network connects, power control module's second end with control module connects, power control module's third end with USB TYPE-C interface connection, power control module comprises parallelly connected power input submodule piece and power output submodule piece.
According to the third aspect of the present invention, there is provided a graphics signal generator, comprising any one of the above-mentioned interface devices supporting bidirectional transmission of high-speed USB TYPE-C.
Generally, compared with the prior art, the utility model, beneficial effect has:
(1) and the mode of the control module and the power supply module is adopted to realize the function of negotiating bidirectional power supply and power receiving. Only the special PD control chip is used for power parameter identification, the voltage control of the interface power supply and the power receiving direction control of the interface are all completed by the control module, the dependence on the special PD control chip is reduced, the special power chip is not needed, the performance bottleneck of the special PD control chip and the power chip is not limited, and the supported data communication protocol is greatly expanded.
(2) The module material selection range of the whole equipment is expanded, and the cost of the whole equipment can be effectively reduced.
(3) The special high-integration chip is less used, the maintenance is easier when the interface part has chips or devices damaged, and the maintenance and replacement cost is lower.
Drawings
FIG. 1 is a schematic diagram of a prior art interface device;
fig. 2 is a schematic diagram of an interface device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a power module according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an output voltage regulating circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 2, the embodiment of the present invention provides an interface device supporting bidirectional transmission high-speed USB TYPE-C, including: the device comprises a control module, a power module, an interface identification module and a USB TYPE-C interface. The interface identification module can be a special PD control chip existing in the market, such as RT1715, or can be an interface identification circuit developed by self. The control module can be an FPGA module or an SOC chip. The USB TYPE-C interface is connected to a terminal (not shown), such as a display module.
Control module includes power control pin and input, and interface identification module's one end and USB TYPE-C interface connection to discern the power parameter of USB TYPE-C interface, and interface identification module's the other end is connected with control module's input, sends the content of discerning for control module, and power module one end is connected with control module's power control pin, in order to receive control module's power control signal, power module's the other end and USB TYPE-C interface connection, in order to supply power or receive the electricity from USB TYPE-C interface to USBTYPE-C interface.
As shown in fig. 3, preferably, the power supply module includes a power supply network and a power supply control module, a first end of the power supply control module is connected to the power supply network, a second end of the power supply control module is connected to the control module (not shown in the figure), a third end of the power supply control module is connected to the USB TYPE-C interface, the power supply control module includes a power supply input sub-module and a power supply output sub-module which are connected in parallel, and the control module controls any one of the power supply input sub-module and the power supply output sub-module to be conducted. The power input submodule is used for receiving power from the USB TYPE-C interface, and the power output submodule is used for supplying power to the USB TYPE-C interface. The power input sub-module comprises switches and a DC-DC voltage regulation input sub-module which are connected in series, the power output sub-module comprises switches and a DC-DC voltage regulation output sub-module which are connected in series, the control module is respectively connected with control ends of the two switches (not shown in the figure), the on-off of the two switches is controlled to control the power input sub-module or any one of the power output sub-modules to be conducted, when the power input sub-module is conducted, the power input sub-module is in a power receiving state, and when the power output sub-module is conducted, the power output sub.
Preferably, the power control module further includes a leakage circuit, the leakage circuit is used for leaking redundant electric energy of the power input submodule or the power output submodule, and the control module is further used for controlling conduction of the leakage circuit. The specific structure of the leakage circuit can be as follows: the power supply comprises a switch, wherein one end of the switch is grounded, and the other end of the switch is connected with the common end of a power supply input submodule and a power supply output submodule. The control module realizes the release of redundant electric energy by controlling the on-off of the switch.
In order to realize the function by using a conventional DC-DC chip, preferably, as shown in fig. 4, the power output sub-module includes a DC-DC module and an output voltage adjusting circuit, and the output voltage adjusting circuit is used for adjusting the output voltage of the DC-DC module to meet the power parameter requirements of different transmission protocols.
The output voltage regulating circuit comprises a plurality of voltage regulating resistors (R1-R5) which are connected in series, the plurality of voltage regulating resistors form a series branch, the first end of the series branch is connected with a voltage regulating pin of the DC-DC module, the first end of the series branch is also connected with a voltage output pin of the DC-DC module through a resistor (R6), the second end of the series branch is grounded, the first end of one switch (K1-K4) is connected between any two voltage regulating resistors, the second ends of all switches (K1-K4) are grounded, and the on-off of all switches (K1-K4) is controlled by the control module.
In this embodiment, only interface identification modules such as a dedicated PD control chip are used to identify power parameters, and the interface supply voltage and the supply and receiving of power are also controlled by the interface identification module. Due to the fact that the USB TYPE-C interface circuit is not limited, the power supply and receiving directions can be switched at any time, and power supply parameters required by different communication protocols can be supported.
The utility model discloses a pattern signal generator, including the interface arrangement of the high-speed USB TYPE-C of any one kind of support bidirectional transmission of above-mentioned. The implementation principle is similar to the above-mentioned interface device supporting bidirectional transmission of high-speed USB TYPE-C, and details are not repeated here.
The utility model discloses support high-speed USB TYPE-C's of bidirectional transfer interface conversion equipment, include: the device comprises a control module, a power supply module and an interface identification module. Compared with the high-speed USB TYPE-C interface equipment supporting bidirectional transmission, the high-speed USB TYPE-C interface equipment has the difference that the USB TYPE-C interface is not included for realizing the conversion of the interface.
The control module comprises a power supply control pin and an input end, one end of the interface identification module is connected with an external USB TYPE-C interface to identify power supply parameters of the USB TYPE-C interface, the other end of the interface identification module is connected with the input end of the control module to send the identified content to the control module, one end of the power supply module is connected with the power supply control pin of the control module to receive a power supply control signal of the control module, and the other end of the power supply module is connected with the USB TYPE-C interface to supply power to the USB TYPE-C interface or receive power from the USB TYPE-C interface.
Preferably, the power supply module comprises a power supply network and a power supply control module, a first end of the power supply control module is connected with the power supply network, a second end of the power supply control module is connected with the control module, a third end of the power supply control module is connected with the USB TYPE-C interface, the power supply control module consists of a power supply input submodule and a power supply output submodule which are connected in parallel, and the control module controls any one of the power supply input submodule and the power supply output submodule to be conducted.
The specific technical implementation details and implementation principles of the interface conversion device are similar to those of the high-speed usb type-C interface device supporting bidirectional transmission, and are not described herein again.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An interface device supporting bidirectional transmission of high-speed USB TYPE-C, comprising: the device comprises a control module, a power supply module, an interface identification module and a USB TYPE-C interface; control module includes power control pin and input, interface identification module's one end with USBTYPE-C interface connection, interface identification module's the other end with control module's input is connected, power module one end with control module's power control pin is connected, power module's the other end with USBTYPE-C interface connection.
2. The device according to claim 1, wherein the power module comprises a power network and a power control module, a first end of the power control module is connected to the power network, a second end of the power control module is connected to the control module, a third end of the power control module is connected to the USB TYPE-C interface, and the power control module comprises a power input sub-module and a power output sub-module connected in parallel.
3. The interface device of claim 2, wherein the power output sub-module comprises a DC-DC module and an output voltage regulating circuit.
4. The interface device of claim 3, wherein the output voltage adjusting circuit comprises a plurality of serially connected voltage-adjusting resistors, a plurality of voltage-adjusting resistors form a serial branch, a first end of the serial branch is connected to the voltage-adjusting pin of the DC-DC module, a first end of the serial branch is further connected to the voltage-outputting pin of the DC-DC module through a resistor, a second end of the serial branch is grounded, a first end of a switch is connected between any two voltage-adjusting resistors, a second end of all switches is grounded, and on/off of all switches is controlled by the control module.
5. The interface device of claim 2, wherein the power control module further comprises a leakage circuit for draining redundant power of the power input sub-module or the power output sub-module.
6. The interface device of claim 1, wherein the interface identification module is a dedicated PD controller chip.
7. The interface device of claim 1, wherein the control module is an FPGA module.
8. An interface conversion device supporting bidirectional transmission for high-speed USB TYPE-C, comprising: the device comprises a control module, a power supply module and an interface identification module; control module includes power control pin and input, interface identification module's one end and outside USB TYPE-C interface connection, interface identification module's the other end with control module's input is connected, power module one end with control module's power control pin is connected, power module's the other end with USB TYPE-C interface connection.
9. The device of claim 8, wherein the power module comprises a power network and a power control module, a first end of the power control module is connected to the power network, a second end of the power control module is connected to the control module, a third end of the power control module is connected to the USB TYPE-C interface, and the power control module comprises a power input sub-module and a power output sub-module connected in parallel.
10. A graphics signal generator comprising an interface device of high speed USB TYPE-C supporting bi-directional transmission according to any of claims 1 to 7.
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| CN202021580161.XU CN211427334U (en) | 2020-08-03 | 2020-08-03 | Interface device, interface conversion device and graphic signal generator |
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| CN202021580161.XU CN211427334U (en) | 2020-08-03 | 2020-08-03 | Interface device, interface conversion device and graphic signal generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023015720A1 (en) * | 2021-08-12 | 2023-02-16 | 惠州Tcl云创科技有限公司 | Bidirectional charging circuit and apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023015720A1 (en) * | 2021-08-12 | 2023-02-16 | 惠州Tcl云创科技有限公司 | Bidirectional charging circuit and apparatus |
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