CN217590845U

CN217590845U - Power supply circuit and equipment of dual-power pluggable POE (Power over Ethernet) switch

Info

Publication number: CN217590845U
Application number: CN202221963191.8U
Authority: CN
Inventors: 董金艳
Original assignee: Shenzhen JWIPC Technology Co Ltd
Current assignee: Shenzhen JWIPC Technology Co Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-10-14
Anticipated expiration: 2032-07-27

Abstract

The utility model relates to a POE switch power supply circuit with double power sources capable of being plugged and unplugged, which comprises an electric controller and a CPLD module; the electric controller comprises three bank management signals, and pins corresponding to the three bank management signals are respectively connected with an IO interface of the CPLD module through the optocoupler unit; the CPLD module is connected with two POWER GOOD signals of 54V POWER supply; use the novel power supply circuit of this application, under the POE switch is full loaded the condition in the load, if one of them can pull out and insert the power failure, can not influence the load that another power can supply power and use because of the overcurrent protection power falls the electricity, can not cause the condition that whole POE load falls the electricity.

Description

Power supply circuit and equipment of dual-power pluggable POE (Power over Ethernet) switch

Technical Field

The utility model relates to a POE switch technical field, more specifically say, relate to a two power supply can pull out and insert POE switch power supply circuit and equipment.

Background

At present, the application of a PoE switch is comprehensively carried out in the fields of wireless coverage, building talkback, monitoring and the like, the power supply function of the PoE switch is attributed to a PoE power supply chip in the PoE switch, but under the condition that the PoE switch is fully loaded, if one pluggable power supply fails, the power supply can carry out overcurrent protection, all PoE loads are powered off, and power distribution needs to be carried out after the power supply is recovered; therefore, poor experience can be brought to terminal clients, for example, communication abnormity is caused by sudden signal interruption of wireless coverage, the talkback of a building cannot be communicated, and monitoring pictures are lost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, a two power supply can pull out and insert POE switch power supply circuit and equipment is provided.

The utility model provides a technical scheme that its technical problem adopted is:

constructing a power circuit of a dual-power pluggable POE (Power over Ethernet) switch, wherein the power circuit comprises an electric controller and a CPLD (complex programmable logic device) module; the electric controller comprises three bank management signals, and pins corresponding to the three bank management signals are respectively connected with an IO interface of the CPLD module through an optical coupling unit; and the CPLD module is connected with two POWER GOOD signals of 54V POWER supplies.

POE switch power supply circuit can be pulled out and insert to dual supply, wherein, the electric controller model is BCM59121.

POE switch power supply circuit can be pulled out to dual supply, wherein, opto-coupler unit model is LTV-356T.

POE switch Power supply circuit can be pulled out to dual supply, wherein, two the way Power Good signal voltage is 3.3V.

The utility model provides a two power supply can be pulled out and insert POE switch equipment, wherein, be provided with on the equipment and can pull out and insert POE switch power supply circuit like foretell two power supply.

The beneficial effects of the utility model reside in that: use the novel power supply circuit of this application, under the POE switch is full-load condition in the load, if one of them can pull out and insert the power failure, can not influence the load that another power can supply power and use because of overcurrent protection power supply power failure, can not cause the condition that whole POE load falls the electricity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the drawings:

fig. 1 is a circuit diagram of the power circuit of the dual power pluggable POE switch according to the preferred embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description will be made clearly and completely in conjunction with the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of protection of the present invention.

The utility model discloses the dual supply of the preferred embodiment can pull out and insert POE switch power supply circuit, as shown in fig. 1, including electric controller 1 and CPLD module 2; the electric controller 1 comprises three bank management signals, and pins corresponding to the three bank management signals are respectively connected with an IO interface of the CPLD module 2 through the optocoupler unit 3; the CPLD module 2 is connected with two POWER GOOD signals 4 of 54V POWER supply;

use the novel power supply circuit of this application, under the POE switch is full-load condition in the load, if one of them can pull out and insert the power failure, can not influence the load that another power can supply power and use because of overcurrent protection power supply power failure, can not cause the condition that whole POE load falls the electricity.

Preferably, the electric controller is in a model of BCM59121, it is understood that there may be other existing chip models with the same function, and a simple replacement of models based on this principle also belongs to the protection scope of the present application.

Preferably, the model of the optical coupling unit is LTV-356T, and it can be understood that there may be other existing chip models with the same function, and a simple replacement of the model based on this principle also belongs to the protection scope of this application.

Preferably, the voltage of the two Power Good signals is 3.3V, and it can be understood that the two Power Good signals can be converted into other voltage values according to actual needs, and simple parameter replacement based on the principle also belongs to the protection scope of the present application.

The specific working principle of the circuit is as follows: under the default condition, when the dual power supplies supply power simultaneously, both PSU0_54PG and PSU1_54PG output low level to CPLD, IO1, IO2 and IO3 of CPLD output low level to cathode of LED of optocoupler LTV-356T, the LED is conducted, and is received by photodetector to generate light current to drive on phototriode, so that the phototriode is in conducting state, thus the collector of phototriode is transmitted low level to BCM59121, i.e. BANK [2 ] 0 =0, at this time, the dual power supplies supply is normally powered, the load is also in full load state and normally works, when any one of the power supplies outputs abnormity, 54PG will be changed to high level, 54PG transmits state to IO4 and IO5 of CPLD respectively, BANK [2 ] is changed from 0X0 to 0X1 through CPLD logic processing BANK [2 ] and the state of 0X0, i.e. 1=1, the state of IOP 1 is transmitted to cathode of LED of LTV-356T, the phototriode is not conducted, the phototriode is in cut-off state, the phototriode triode is pulled up to high level to power supply power to BCM 5910, the external power supply power, the high level, the collector of BCM 21, the emitter, the BCM continues unloading triode 5910, and the BCM 21, and the BCM port continues unloading stage, and the load continues to the BCM, and the BCM 21, and the BCM is also can be switched on.

The utility model provides a two power can be pulled out and insert POE switch equipment, wherein, is provided with on the equipment and can pulls out and insert POE switch power supply circuit like foretell two power.

It will be understood that modifications and variations are possible to those skilled in the art in light of the above teachings and that all such modifications and variations are considered to be within the purview of the invention as set forth in the appended claims.

Claims

1. A POE switch power supply circuit with double pluggable power supplies is characterized by comprising an electric controller and a CPLD module; the electric controller comprises three bank management signals, and pins corresponding to the three bank management signals are respectively connected with an IO interface of the CPLD module through an optical coupling unit; and the CPLD module is connected with two POWER GOOD signals of 54V POWER supplies.

2. The dual-power-supply-pluggable POE switch power circuit of claim 1, wherein the electric controller model is BCM59121.

3. The dual power supply pluggable POE switch power circuit of claim 1 or 2, wherein the optocoupler unit model is LTV-356T.

4. The dual-Power-supply pluggable POE switch Power supply circuit as claimed in claim 1 or 2, wherein the voltage of the two Power Good signals is 3.3V.

5. A dual-power-supply pluggable POE switch device is characterized in that the device is provided with a power supply circuit of the dual-power-supply pluggable POE switch as claimed in any one of claims 1-4.