CN215499001U - Network communication circuit and device - Google Patents
Network communication circuit and device Download PDFInfo
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- CN215499001U CN215499001U CN202121277218.3U CN202121277218U CN215499001U CN 215499001 U CN215499001 U CN 215499001U CN 202121277218 U CN202121277218 U CN 202121277218U CN 215499001 U CN215499001 U CN 215499001U
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Abstract
The application discloses a network communication circuit and a device, relating to the technical field of network communication; the method comprises the following steps: a second chip; a first fuse; a network interface; a POE circuit; the network transformer integration module comprises a network transformer, a first common-mode inductor and a second common-mode inductor, one end of the network transformer is electrically connected with the second chip, and the other end of the network transformer is electrically connected with the network interface; two ends of the first fuse are respectively connected with a first pin and a network interface at one end of the first common-mode inductor, and the other end of the first common-mode inductor is used for being electrically connected with the POE circuit; a first chip; and one end of the second common-mode inductor is electrically connected with the USB interface, and the other end of the second common-mode inductor is electrically connected with the first chip. The network communication circuit integration level of this application is high, can also supply power to communications facilities simultaneously.
Description
Technical Field
The present application relates to the field of network communication technologies, and in particular, to a network communication circuit and a network communication device.
Background
In the related art, network transformers are arranged in network communication circuits and used for signal level coupling, and on the first hand, signals on the circuits can be enhanced to enable the transmission distance of the signals to be longer; in the second aspect, one side of the chip is isolated from the outside, the anti-interference capability is greatly enhanced, and the chip is greatly protected (such as lightning stroke); in the third aspect, when the network ports with different levels (such as 2.5V for PHY chip and 3.3V for PHY chip) are connected, the mutual devices are not affected. However, when signal transmission is performed, it is usually necessary to separately supply power to the communication device to perform signal transmission, so that normal signal transmission is performed after the network communication circuit establishes connection with the communication device through the network interface. At this time, the communication device and the network communication circuit need to be separately powered, so that the wiring is complicated, and the operation is inconvenient.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. To this end, the present application proposes a network communication circuit and apparatus capable of supplying power to a communication device while transmitting a signal.
Network communication circuitry according to an embodiment of the first aspect of the application includes:
a second chip;
a first fuse;
a network interface;
a POE circuit;
the network transformer integration module comprises a network transformer, a first common-mode inductor and a second common-mode inductor, one end of the network transformer is electrically connected with the second chip, and the other end of the network transformer is electrically connected with the network interface; one end of the first fuse is electrically connected with a first pin at one end of the first common-mode inductor, and the other end of the first fuse is electrically connected with the network interface; the first fuse is used for disconnecting the POE circuit from the network interface when the current exceeds a preset value, and the other end of the first common-mode inductor is used for electrically connecting the POE circuit;
a first chip;
and one end of the second common-mode inductor is electrically connected with the USB interface, and the other end of the second common-mode inductor is electrically connected with the first chip.
According to the network communication circuit of the embodiment of the application, the following beneficial effects are at least achieved: on one hand, the network transformer, the first common-mode inductor and the second common-mode inductor are packaged together by arranging the network transformer integration module, so that the integration of a circuit can be effectively improved; on the other hand, by arranging the POE circuit, the POE circuit can supply power to the communication equipment while the second chip supplies power to the network transformer, and the POE circuit is combined with the network interface to supply power to the communication equipment while transmitting signals; therefore, the network communication circuit of the application can supply power to the communication equipment while having higher integration level.
According to some embodiments of the application, the network communication circuit further includes a second fuse, one end of the second fuse is electrically connected to the second pin of one end of the first common mode inductor, and the other end of the second fuse is electrically connected to the power supply negative pin of the network interface.
According to some embodiments of the application, the number of the power supply positive pins is two, the two power supply positive pins are connected with each other, the number of the power supply negative pins is two, and the two power supply negative pins are connected with each other.
According to some embodiments of the present application, the current ratings of the first fuse and the second fuse are each greater than or equal to 3A.
According to some embodiments of the present application, the network interface is an RJ45 interface.
According to some embodiments of the present application, the network transformers are two, respectively a first network transformer and a second network transformer, the first network transformer comprises a first transformer and a third common-mode inductance, the first network transformer comprises a second transformer and a fourth common-mode inductance, one end of the first transformer is electrically connected with a first group of RJ45 control pins of the second chip, the other end of the first transformer is electrically connected with the other end of the third common-mode inductor, one end of the third common-mode inductor is electrically connected with the first group of communication pins of the RJ45 interface, one end of the second transformer is electrically connected with a second group of RJ45 control pins of the second chip, the other end of the second transformer is electrically connected with the other end of the fourth common-mode inductor, and one end of the fourth common-mode inductor is electrically connected with the second group of communication pins of the RJ45 interface.
According to some embodiments of the present application, the first set of communication pins of the RJ45 interface includes a signaling positive pin and a signaling negative pin, the second set of communication pins of the RJ45 interface includes a receiving signal positive pin and a receiving signal negative pin, the seventh pin of one end of the third common mode inductor is electrically connected to the signaling positive pin, the eighth pin of one end of the third common mode inductor is electrically connected to the signaling negative pin, the ninth pin of one end of the fourth common mode inductor is electrically connected to the receiving signal positive pin, and the tenth pin of one end of the fourth common mode inductor is electrically connected to the receiving signal negative pin.
According to some embodiments of the present application, a fifth pin of one end of the second common mode inductor is electrically connected to a data positive line pin of the USB interface, a sixth pin of one end of the second common mode inductor is electrically connected to a data negative line pin of the USB interface, and the other end of the second common mode inductor is electrically connected to a USB control pin of the first chip.
The network communication device according to the second aspect of the present application includes the network communication circuit as described above.
According to the network communication device of the embodiment of the application, at least the following beneficial effects are achieved: on one hand, the network transformer, the first common-mode inductor and the second common-mode inductor are packaged together by arranging the network transformer integration module, so that the integration of a circuit can be effectively improved; on the other hand, through setting up the POE circuit, when the second chip provided the network transformer power, the POE circuit can also supply power for communications facilities to POE circuit and network interface combine together, can supply power to communications facilities in signal transmission. Therefore, the network communication device of the application can supply power to the communication equipment while having high integration level.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The present application is further described with reference to the following figures and examples, in which:
FIG. 1 is a circuit schematic of a network communication circuit provided in one embodiment of the present application;
fig. 2 is a circuit schematic diagram of the network transformer integrated module shown in fig. 1.
Reference numerals:
the network transformer integrated module comprises a first chip 100, a second chip 200, a first fuse 300, a network transformer integrated module 400, a first common mode inductor 410, a second common mode inductor 420, a first transformer 430, a first winding 431, a first center tap 432, a second winding 433, a second center tap 434, a second transformer 440, a third winding 441, a third center tap 442, a fourth winding 443, a fourth center tap 444, a third common mode inductor 450, a fourth common mode inductor 460, a network interface 500, a USB interface 600 and a second fuse 700.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
POE is called Power Over Ethernet, which means that Power is supplied to 10BASE-T, 100BASE-TX and 1000BASE-T Ethernet networks, namely, a data line and a Power line are transmitted on the same network, and the distance of reliable Power supply is 100 meters at the longest.
A network communication circuit according to an embodiment of the present application is described below with reference to fig. 1.
It can be understood that, as shown in fig. 1, the network communication circuit according to the embodiment of the present application includes:
a second chip 200;
a first fuse 300;
a network interface 500;
a POE circuit;
the network transformer integrated module 400, the network transformer integrated module 400 includes a network transformer, a first common mode inductor 410 and a second common mode inductor 420, one end of the network transformer is electrically connected to the second chip 200, and the other end of the network transformer is electrically connected to the network interface 500; one end of the first fuse 300 is electrically connected to the first pin of one end of the first common mode inductor 410, and the other end of the first fuse 300 is electrically connected to the network interface 500; the first fuse 300 is configured to disconnect the POE circuit from the network interface 500 when the current exceeds the preset value, and the other end of the first common mode inductor 410 is configured to electrically connect the POE circuit;
a first chip 100;
one end of the second common mode inductor 420 is electrically connected to the USB interface 600, and the other end of the second common mode inductor 420 is electrically connected to the first chip 100.
On one hand, by arranging the network transformer integration module 400, the network transformer, the first common mode inductor 410 and the second common mode inductor 420 are packaged together, so that the integration of the circuit can be effectively improved; on the other hand, by setting the POE circuit, the POE circuit can supply power to the communication device while the second chip 200 supplies power to the network transformer, and the POE power supply line is combined with the network interface 500, so that power can be supplied to the communication device while signals are transmitted; therefore, the network communication circuit of the application can supply power to the communication equipment while having higher integration level.
It is understood that, as shown in fig. 1, the network communication circuit further includes a second fuse 700, one end of the second fuse 700 is electrically connected to the second pin of one end of the first common mode inductor 410, and the other end of the second fuse 700 is electrically connected to the power supply negative pin of the network interface 500.
It can be understood that, as shown in fig. 1, the network communication circuit further includes a second fuse 700, one end of the first fuse 300 is electrically connected to the first pin of one end of the first common mode inductor 410, the third pin of the other end of the first common mode inductor 410 is used to electrically connect to the positive input terminal of the POE circuit, the other end of the first fuse 300 is connected to the positive power supply pin of the network interface 500, one end of the second fuse 700 is electrically connected to the second pin of one end of the first common mode inductor 410, the fourth pin of the other end of the first common mode inductor 410 is used to electrically connect to the negative input terminal of the POE circuit, and the other end of the second fuse 700 is electrically connected to the negative power supply pin of the network interface 500. The first fuse 300 and the second fuse 700 may perform a double protection function, and when the first fuse 300 fails, the second fuse 700 may perform a protection function as a second double protection function.
It can be understood that, as shown in fig. 1, one end of the first fuse 300 is electrically connected to the second pin of one end of the first common mode inductor 410, the fourth pin of the other end of the first common mode inductor 410 is used to electrically connect to the negative input terminal of the POE circuit, the other end of the first fuse 300 is connected to the negative power supply pin of the network interface 500, one end of the second fuse 700 is electrically connected to the first pin of one end of the first common mode inductor 410, the third pin of the other end of the first common mode inductor 410 is used to electrically connect to the positive power supply terminal of the POE circuit, and the other end of the second fuse 700 is electrically connected to the positive power supply pin of the network interface 500.
It can be understood that, as shown in fig. 2, the first pin at one end of the first common mode inductor 410 is the pin 12 of the first common mode inductor 410, the second pin at one end of the first common mode inductor 410 is the pin 13 of the first common mode inductor 410, the third pin at the other end of the first common mode inductor 410 is the pin 11 of the first common mode inductor 410, and the fourth pin at the other end of the first common mode inductor 410 is the pin 14 of the first common mode inductor 410.
It is understood that, as shown in fig. 1, the power supply positive pins are two, the two power supply positive pins are connected to each other, the power supply negative pins are two, and the two power supply negative pins are connected to each other. Specifically, as shown in fig. 1, the two power supply positive pins are pin 4 and pin 5 of the network interface 500, respectively, the two power supply negative pins are pin 7 and pin 8 of the network interface 500, respectively, and the power supply positive pin and the power supply negative pin are used for supplying power to the communication device. By providing two power supply positive pins and two power supply negative pins, when a wider wire is arranged on the circuit board, a larger current can be supplied, and the first fuse 300 is not blown due to the fact that the current rating of the first fuse 300 is not reached yet due to the limitation of a line and the temperature is too high.
It is understood that the current ratings of the first fuse 300 and the second fuse 700 are each greater than or equal to 3A, as shown in fig. 1.
It is to be understood that the network interface 500 is an RJ45 interface, as shown in fig. 1.
It can be understood that, as shown in fig. 1, there are two network transformers, which are a first network transformer and a second network transformer, respectively, the first network transformer includes a first transformer 430 and a third common mode inductor 450, the first network transformer includes a second transformer 440 and a fourth common mode inductor 460, one end of the first transformer 430 is electrically connected to the first set of RJ45 control pins of the second chip 200, the other end of the first transformer 430 is electrically connected to the other end of the third common mode inductor 450, one end of the third common mode inductor 450 is electrically connected to the first set of communication pins of the RJ45 interface, one end of the second transformer 440 is electrically connected to the second set of RJ45 control pins of the second chip 200, the other end of the second transformer 440 is electrically connected to the other end of the fourth common mode inductor 460, and one end of the fourth common mode inductor 460 is electrically connected to the second set of communication pins of the RJ45 interface.
It is understood that, as shown in fig. 1, the first common mode inductor 410, the second common mode inductor 420, the first transformer 430, the second transformer 440, the third common mode inductor 450 and the fourth common mode inductor 460 are integrated into a package to form the network transformer integrated module 400.
It is understood that, as shown in fig. 1, the first group of RJ45 control pins of the second chip 200 includes pin 1, pin 2 and pin 3 of the second chip 200, and the second group of RJ45 control pins of the second chip 200 includes pin 4, pin 5 and pin 6 of the second chip 200.
It is understood that, as shown in fig. 2, the other end of the third common mode inductor 450 includes the pin 31 and the pin 34 of the third common mode inductor 450, one end of the third common mode inductor 450 includes the pin 32 and the pin 33 of the third common mode inductor 450, the other end of the fourth common mode inductor 460 includes the pin 41 and the pin 44 of the fourth common mode inductor 460, and one end of the fourth common mode inductor 460 includes the pin 42 and the pin 43 of the fourth common mode inductor 460; the first transformer 430 comprises a first winding 431, a first center tap 432 and a second winding 433 which are arranged on the first winding 431, and a second center tap 434 arranged on the second winding 433, wherein one end of the first winding 431 is connected with a pin 2 of the second chip 200, the other end of the first winding 431 is connected with a pin 3 of the second chip 200, the first center tap 432 is connected with a pin 1 of the second chip 200, one end of the second winding 433 is connected with a pin 31 of the third common mode inductor 450, and the other end of the second winding 433 is connected with a pin 34 of the third common mode inductor 450; the second transformer 440 includes a third winding 441, a third center tap 442 disposed on the third winding 441, a fourth winding 443, and a fourth center tap 444 disposed on the fourth winding 443, one end of the third winding 441 is connected to pin 4 of the second chip 200, the other end of the first winding 431 is connected to pin 5 of the second chip 200, the third center tap 442 is connected to pin 6 of the second chip 200, one end of the fourth winding 443 is connected to pin 41 of the fourth common mode inductor 460, and the other end of the fourth winding 443 is connected to pin 44 of the fourth common mode inductor 460.
It is understood that, as shown in fig. 1 and 2, the second center tap 434 is electrically connected to one end of the resistor R2, the fourth center tap 444 is electrically connected to one end of the resistor R1, the resistor R1 is electrically connected to the other end of the resistor R2 in parallel and electrically connected to one end of the capacitor C1, and the other end of the capacitor C1 is grounded.
It is understood that, as shown in fig. 1, the first group of communication pins of the RJ45 interface includes a positive signaling pin and a negative signaling pin, the second group of communication pins of the RJ45 interface includes a positive receiving pin and a negative receiving pin, the seventh pin at one end of the third common mode inductor 450 is electrically connected to the positive signaling pin, the eighth pin at one end of the third common mode inductor 450 is electrically connected to the negative signaling pin, the ninth pin at one end of the fourth common mode inductor 460 is electrically connected to the positive receiving pin, and the tenth pin at one end of the fourth common mode inductor 460 is electrically connected to the negative receiving pin.
It can be understood that, as shown in fig. 1, the signal positive pin is pin 1 of the RJ45 interface, the signal negative pin is pin 2 of the RJ45 interface, the signal receiving positive pin is pin 3 of the RJ45 interface, and the signal receiving negative pin is pin 6 of the RJ45 interface; a seventh pin at one end of the third common mode inductor 450 is a pin 32 of the third common mode inductor 450, an eighth pin at one end of the third common mode inductor 450 is a pin 33 of the third common mode inductor 450, a ninth pin at one end of the fourth common mode inductor 460 is a pin 42 of the fourth common mode inductor 460, and a tenth pin at one end of the fourth common mode inductor 460 is a pin 43 of the fourth common mode inductor 460; pin 32 of the third common mode inductor 450 is connected to pin 1 of the RJ45 interface, pin 33 of the third common mode inductor 450 is connected to pin 2 of the RJ45 interface, pin 42 of the fourth common mode inductor 460 is connected to pin 3 of the RJ45 interface, and pin 43 of the fourth common mode inductor 460 is connected to pin 6 of the RJ45 interface.
It can be understood that, as shown in fig. 1, the fifth pin at one end of the second common mode inductor 420 is electrically connected to the data positive line pin of the USB interface 600, the sixth pin at one end of the second common mode inductor 420 is electrically connected to the data negative line pin of the USB interface 600, and the other end of the second common mode inductor 420 is electrically connected to the USB control pin of the first chip 100.
It can be understood that, as shown in fig. 1 and fig. 2, two USB control pins are provided, which are pin 1 and pin 2 of the first chip 100, respectively, a fifth pin at one end of the second common mode inductor 420 is pin 22 of the second common mode inductor 420, a sixth pin at one end of the second common mode inductor 420 is pin 23 of the second common mode inductor 420, and the other end of the second common mode inductor 420 is pin 21 and pin 24 of the second common mode inductor 420, respectively; pin 1 of the first chip 100 is connected to pin 21 of the second common mode inductor 420, and pin 2 of the first chip 100 is connected to pin 24 of the second common mode inductor 420; pin 22 of the second common mode inductor 420 is electrically connected to a data positive line pin of the USB interface 600, and pin 23 of the second common mode inductor 420 is electrically connected to a data negative line pin of the USB interface 600.
It is understood that the first chip 100 and the second chip 200 are both PHY chips.
A network communication apparatus according to an embodiment of the present application is described below with reference to fig. 1.
It can be understood that, as shown in fig. 1, the network communication device according to the embodiment of the present application includes the above network communication circuit.
On one hand, by arranging the network transformer integration module 400, the network transformer, the first common mode inductor 410 and the second common mode inductor 420 are packaged together, so that the integration of the circuit can be effectively improved; on the other hand, through setting up the POE circuit, when second chip 200 provided the network transformer power, the POE circuit can also supply power for communications facilities to the POE circuit combines together with network interface 500, can supply power to communications facilities in signal transmission. Therefore, the network communication device of the application can supply power to the communication equipment while having high integration level.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (9)
1. Network communication circuitry, comprising:
a second chip;
a first fuse;
a network interface;
a POE circuit;
the network transformer integration module comprises a network transformer, a first common-mode inductor and a second common-mode inductor, one end of the network transformer is electrically connected with the second chip, and the other end of the network transformer is electrically connected with the network interface; one end of the first fuse is electrically connected with a first pin at one end of the first common-mode inductor, and the other end of the first fuse is electrically connected with the network interface; the first fuse is used for disconnecting the POE circuit from the network interface when the current exceeds a preset value, and the other end of the first common-mode inductor is used for electrically connecting the POE circuit;
a first chip;
and one end of the second common-mode inductor is electrically connected with the USB interface, and the other end of the second common-mode inductor is electrically connected with the first chip.
2. The network communication circuit according to claim 1, further comprising a second fuse, wherein one end of the second fuse is electrically connected to the second pin of one end of the first common mode inductor, and the other end of the second fuse is electrically connected to the power supply negative pin of the network interface.
3. The network communication circuit of claim 2, wherein the current ratings of the first fuse and the second fuse are each greater than or equal to 3A.
4. The network communication circuit of claim 1, wherein the network interface has two positive power pins, the two positive power pins are connected to each other, the network interface has two negative power pins, and the two negative power pins are connected to each other.
5. The network communication circuit of claim 1, wherein the network interface is an RJ45 interface.
6. The network communication circuit of claim 5, wherein the network transformers are two, a first network transformer and a second network transformer, the first network transformer comprises a first transformer and a third common-mode inductance, the first network transformer comprises a second transformer and a fourth common-mode inductance, one end of the first transformer is electrically connected with a first group of RJ45 control pins of the second chip, the other end of the first transformer is electrically connected with the other end of the third common-mode inductor, one end of the third common-mode inductor is electrically connected with the first group of communication pins of the RJ45 interface, one end of the second transformer is electrically connected with a second group of RJ45 control pins of the second chip, the other end of the second transformer is electrically connected with the other end of the fourth common-mode inductor, and one end of the fourth common-mode inductor is electrically connected with the second group of communication pins of the RJ45 interface.
7. The network communication circuit of claim 6, wherein the first set of communication pins of the RJ45 interface comprises a positive signaling pin and a negative signaling pin, the second set of communication pins of the RJ45 interface comprises a positive receiving pin and a negative receiving pin, the seventh pin of one end of the third common mode inductor is electrically connected to the positive signaling pin, the eighth pin of one end of the third common mode inductor is electrically connected to the negative signaling pin, the ninth pin of one end of the fourth common mode inductor is electrically connected to the positive receiving pin, and the tenth pin of one end of the fourth common mode inductor is electrically connected to the negative receiving pin.
8. The network communication circuit according to claim 1, wherein a fifth pin of one end of the second common mode inductor is electrically connected to a data positive line pin of the USB interface, a sixth pin of one end of the second common mode inductor is electrically connected to a data negative line pin of the USB interface, and another end of the second common mode inductor is electrically connected to a USB control pin of the first chip.
9. Network communication device, characterized in that it comprises a network communication circuit according to any of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121277218.3U CN215499001U (en) | 2021-06-08 | 2021-06-08 | Network communication circuit and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121277218.3U CN215499001U (en) | 2021-06-08 | 2021-06-08 | Network communication circuit and device |
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| CN215499001U true CN215499001U (en) | 2022-01-11 |
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| CN202121277218.3U Active CN215499001U (en) | 2021-06-08 | 2021-06-08 | Network communication circuit and device |
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