CN116316530A - PD power supply equipment double-electric-port power supply hot backup system - Google Patents
PD power supply equipment double-electric-port power supply hot backup system Download PDFInfo
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- CN116316530A CN116316530A CN202211532099.0A CN202211532099A CN116316530A CN 116316530 A CN116316530 A CN 116316530A CN 202211532099 A CN202211532099 A CN 202211532099A CN 116316530 A CN116316530 A CN 116316530A
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- power supply
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000009977 dual effect Effects 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/106—Parallel operation of dc sources for load balancing, symmetrisation, or sharing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/14—Balancing the load in a network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a hot standby system of a double-electric-port power supply of PD power supply equipment, which comprises a port A power supply circuit and a port B power supply circuit which are connected in parallel, wherein the port A power supply circuit and the port B power supply circuit have symmetry, and the port A power supply circuit comprises: the PD control chip is connected with the peripheral circuit and is also used for outputting a light state signal and a heavy state signal of the load; the dummy load circuit is connected with the PD control chip and is used for keeping continuous load small current in the PD control chip when the equipment is powered on; and the MCU is connected to the PD control chip and the dummy load circuit, and can judge whether to supply power for heavy load according to the state signal output by the PD control chip and close the dummy load circuit when the power is supplied for heavy load. The invention has extremely high reliability, and can continue to work without power failure under the condition of power supply occurrence, so that the power supply continuity and fault tolerance of the equipment are greatly improved.
Description
Technical Field
The invention relates to the technical field of PD power supply equipment, in particular to a hot backup system for a double-electric-port power supply of PD power supply equipment.
Background
With the continuous development of 5G technology, various 5G devices are now layered endlessly. With the continuous development of application scenes, 5G is used for connecting the termination equipment of the wired network, and the termination equipment is used as wireless and wired interfacing equipment, which is required to have extremely high reliability for complete and error-free transmission of data, and can work continuously without power failure under the condition of power supply. The power supply persistence and fault tolerance of the device need to be greatly improved to cope with the current urgent demands. In network equipment, POE power supply is more commonly used, so that a hot standby PD power supply circuit with a double-electric-port power supply becomes a new design requirement.
Disclosure of Invention
Based on the foregoing, it is necessary to provide a dual-electric-port power hot standby system of a PD power supply apparatus.
The utility model provides a PD power supply unit dual electric port power supply hot standby system, includes parallel connection's port A power supply circuit and port B power supply circuit, port A power supply circuit and port B power supply circuit have symmetry, wherein, port A power supply circuit includes:
the PD control chip is connected with the peripheral circuit and is also used for outputting a light state signal and a heavy state signal of a load;
the dummy load circuit is connected with the PD control chip and is used for keeping continuous load small current in the PD control chip when equipment is powered on;
and the MCU is connected to the PD control chip and the dummy load circuit, and can judge whether to supply power for the heavy load according to the state signal output by the PD control chip and close the dummy load circuit when the power is supplied for the heavy load.
In one embodiment, the PD control chip has pins 1 to 10;
the 1 st pin and the 5 th pin of the PD control chip are grounded;
the 2 nd pin to the 4 th pin, the 8 th pin to the 10 th pin of the PD control chip are connected with the peripheral circuit;
the 6 th pin of the PD control chip is connected with a power supply end through a first resistor;
the 7 th pin of the PD control chip is connected with a second resistor and a third resistor in series in sequence and then is connected with a power end, and two ends of the second resistor are connected with diodes in parallel.
In one embodiment, the PD control chip is model SY86902.
In one embodiment, the dummy load circuit includes:
a plurality of load resistors connected in parallel, wherein one end of each load resistor is connected with a power supply end;
the 1 st pin of the MOS switch tube is connected with the MCU through a fourth resistor; the 2 nd pin of the MOS switch tube is grounded, and the 3 rd pin of the MOS switch tube is connected with the other ends of the load resistors;
when the MCU controls the 1 st pin of the MOS switch tube to output high level, the MOS switch tube is closed.
In one embodiment, the number of the load resistors is 7, and the resistance values of the load resistors are the same.
According to the PD power supply equipment double-electric-port power supply hot backup system, the dummy load circuit is added on the port A power supply circuit and the port B power supply circuit which are connected in parallel, the PD control chip is utilized to output the light and heavy states of the load, then the MCU closes the dummy load circuit of the heavy-load port, and the light-load port is reserved, so that the light-load port can be directly connected when the heavy-load port is abnormal in power supply, and the PSE detection is not needed to be used for re-supplying power, so that the PD power supply equipment double-electric-port power supply hot backup system has extremely high reliability, can continuously work without power failure under the condition of power supply occurrence, and greatly improves the power supply continuity and fault tolerance of equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a circuit diagram of a port A power supply circuit of a dual-port power hot standby system of a PD power supply apparatus of the present invention;
fig. 2 is a circuit diagram of a port B power supply circuit of the dual-power-port power hot standby system of the PD power supply apparatus of the present invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1-2, an embodiment of the present invention provides a dual-power-PORT power hot standby system of a PD power supply device, including a PORT a power supply circuit (PORT a) and a PORT B power supply circuit (PORT B) connected in parallel, where the PORT a power supply circuit and the PORT B power supply circuit have symmetry, and the PORT a power supply circuit includes:
the PD control chip 1 is connected with the peripheral circuit, and the PD control chip 1 is also used for outputting a light and heavy state signal of a load;
the dummy load circuit 2 is connected with the PD control chip 1, and the dummy load circuit 2 is used for keeping continuous small load current in the PD control chip 1 when equipment is powered on;
and the MCU is connected to the PD control chip 1 and the dummy load circuit 2, and can judge whether to supply power for the heavy load according to the state signal output by the PD control chip 1 and close the dummy load circuit 2 when the power is supplied for the heavy load.
According to the PD power supply equipment double-electric-port power supply hot backup system, the dummy load circuit 2 is added on the port A power supply circuit and the port B power supply circuit which are connected in parallel, the PD control chip 1 is utilized to output the light and heavy states of the load, then the MCU closes the dummy load circuit 2 of the heavy-load port, and the light-load port is reserved, so that the light-load port can be directly connected when the heavy-load port is abnormal in power supply, and the PSE detection is not needed to be used for re-electrifying, so that the PD power supply equipment double-electric-port power supply hot backup system has extremely high reliability, can continuously work without power failure under the condition of power supply occurrence, and greatly improves the power supply persistence and fault tolerance of equipment.
In an embodiment of the present invention, the PD control chip 1 has 1 st to 10 th pins; alternatively, the PD control chip may be of the type SY86902.
The 1 st pin and the 5 th pin of the PD control chip 1 are grounded;
the 2 nd pin to the 4 th pin, the 8 th pin to the 10 th pin of the PD control chip 1 are connected with the peripheral circuit;
the 6 th pin of the PD control chip 1 is connected with a power end 4 through a first resistor 3;
the 7 th pin of the PD control chip 1 is connected with a second resistor 5 and a third resistor 6 in series in sequence and then is connected with a power end 4, and two ends of the second resistor 5 are connected with a diode 7 in parallel.
In this embodiment, the 6 th pin (name T2P) of the PD control chip 1 is used to output the load light and heavy state (represented by duty ratio) of the operation of the port PD, and the 6 th pin is connected to the MCU of the back-end circuit, so that the MCU detects the operation state of the port PD.
Alternatively, the 6 th pin of the PD control chip 1 refers to the following table for different states indicating different powers allocated to this port by the PSE.
Table 3
Response to Determine PSE Allocated Power
Note that, after the pin 7 (PWRGD) of the PD control chip 1 outputs a high level, the dummy load circuit 2 is turned off directly.
In one embodiment of the present invention, the dummy load circuit 2 includes:
a plurality of load resistors 8 connected in parallel, wherein one end of each load resistor 8 is connected with the power supply end 4;
the MOS switch tube 9, the 1 st pin of the MOS switch tube 9 is connected with the MCU through a fourth resistor 10; the 2 nd pin of the MOS switch tube 9 is grounded, and the 3 rd pin of the MOS switch tube 9 is connected with the other ends of the load resistors 8; in this way, the MOS switch 9 can be used as a control switch to control the turn-off or turn-on of the dummy load circuit 2. When the MCU controls the 1 st pin of the MOS switch tube 9 to output high level, the MOS switch tube 9 is closed. Alternatively, the number of the load resistors 8 may be 7 or more, and the resistance values of the plurality of load resistors 8 may be the same.
In this embodiment, after the device is powered on and the working state of the rear end of the PD is stable, the MCU can distinguish which port is the heavy-load power supply according to the state signal sent out by the 6 th pin of the PD control chip 1, and then, by pulling high the ldctl_g0 of the power supply circuit of the port a or the ldctl_g1 of the power supply circuit of the port B, the dummy load circuit 2 of the heavy-load port is closed, so that the dummy load circuit 2 of the light-load port is kept, and the continuous current is allowed to be ensured to be in the hot standby state.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The examples described above represent only a few embodiments of the present invention and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. The utility model provides a PD power supply unit dual electric port power supply hot standby system which characterized in that, including parallel connection's port A power supply circuit and port B power supply circuit, port A power supply circuit and port B power supply circuit have symmetry, wherein, port A power supply circuit includes:
the PD control chip is connected with the peripheral circuit and is also used for outputting a light state signal and a heavy state signal of a load;
the dummy load circuit is connected with the PD control chip and is used for keeping continuous load small current in the PD control chip when equipment is powered on;
and the MCU is connected to the PD control chip and the dummy load circuit, and can judge whether to supply power for the heavy load according to the state signal output by the PD control chip and close the dummy load circuit when the power is supplied for the heavy load.
2. The PD power supply apparatus dual-port power hot standby system of claim 1, wherein the PD control chip has pins 1 to 10;
the 1 st pin and the 5 th pin of the PD control chip are grounded;
the 2 nd pin to the 4 th pin, the 8 th pin to the 10 th pin of the PD control chip are connected with the peripheral circuit;
the 6 th pin of the PD control chip is connected with a power supply end through a first resistor;
the 7 th pin of the PD control chip is connected with a second resistor and a third resistor in series in sequence and then is connected with a power end, and two ends of the second resistor are connected with diodes in parallel.
3. The dual-power hot standby system of a PD power plant of claim 2, wherein the PD control chip is model SY86902.
4. The PD power supply apparatus dual-port power hot standby system of claim 1, wherein the dummy load circuit comprises:
a plurality of load resistors connected in parallel, wherein one end of each load resistor is connected with a power supply end;
the 1 st pin of the MOS switch tube is connected with the MCU through a fourth resistor; the 2 nd pin of the MOS switch tube is grounded, and the 3 rd pin of the MOS switch tube is connected with the other ends of the load resistors;
when the MCU controls the 1 st pin of the MOS switch tube to output high level, the MOS switch tube is closed.
5. The dual-power hot standby system of claim 4, wherein the number of load resistors is 7, and the resistances of the plurality of load resistors are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211532099.0A CN116316530A (en) | 2022-12-01 | 2022-12-01 | PD power supply equipment double-electric-port power supply hot backup system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211532099.0A CN116316530A (en) | 2022-12-01 | 2022-12-01 | PD power supply equipment double-electric-port power supply hot backup system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116316530A true CN116316530A (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211532099.0A Pending CN116316530A (en) | 2022-12-01 | 2022-12-01 | PD power supply equipment double-electric-port power supply hot backup system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116316530A (en) |
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2022
- 2022-12-01 CN CN202211532099.0A patent/CN116316530A/en active Pending
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