CN218920662U - Printed circuit board layout structure and communication power supply - Google Patents
Printed circuit board layout structure and communication power supply Download PDFInfo
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- CN218920662U CN218920662U CN202123059449.XU CN202123059449U CN218920662U CN 218920662 U CN218920662 U CN 218920662U CN 202123059449 U CN202123059449 U CN 202123059449U CN 218920662 U CN218920662 U CN 218920662U
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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
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- 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
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The embodiment of the utility model discloses a printed circuit board layout structure and a communication power supply, wherein the printed circuit board layout structure comprises a first printing area, a second printing area, a third printing area and a fourth printing area which are electrically connected in sequence; the printed circuit board comprises a first area and a second area which are connected with each other; the first area and the second area are sequentially arranged along the first direction, the first printing area is positioned in the first area, and the second printing area, the third printing area and the fourth printing area are positioned in the second area; the fourth printing area, the third printing area and the second printing area are sequentially arranged along the second direction, and the second direction is intersected with the first direction; the first printed area comprises an input filter module, the second printed area comprises a power factor correction module, the third printed area comprises a resonance module, and the fourth printed area comprises an output module. The layout structure of the printed circuit board provided by the embodiment of the utility model can reduce electromagnetic interference and improve the working performance.
Description
Technical Field
The embodiment of the utility model relates to the technical field of communication power supplies, in particular to a printed circuit board layout structure and a communication power supply.
Background
With the rapid progress of modern technology and the high-speed development of economic level, people are also increasingly demanding on the 5G high-power base station communication power supply, and are also increasingly demanding on the function of the 5G high-power base station communication power supply, meanwhile, with the acceleration of 5G communication facilities, the reaction speed of people to the 5G high-power base station communication power supply is also increasingly high, so that the variety of the high-power base station communication power supply is increased, electromagnetic waves generated by high-frequency electronic elements can harm the bodies of people, and on a printed circuit board in use, the high-frequency electronic elements can generate a large amount of electromagnetic waves, and the electromagnetic waves influence adjacent printed circuit boards to generate induction currents through electromagnetic interference between all board layers, namely, the electromagnetic waves can mutually interfere in working.
Disclosure of Invention
The embodiment of the utility model provides a printed circuit board layout structure and a communication power supply, which are used for reasonably laying out a printed circuit board and reducing electromagnetic interference on the circuit board.
The embodiment of the utility model provides a printed circuit board layout structure, which comprises a first printing area, a second printing area, a third printing area and a fourth printing area which are electrically connected in sequence;
the printed circuit board includes a first region and a second region connected to each other; the first area and the second area are sequentially arranged along the first direction, the first printing area is positioned in the first area, and the second printing area, the third printing area and the fourth printing area are positioned in the second area; the fourth printing area, the third printing area and the second printing area are sequentially arranged along a second direction, and the second direction intersects with the first direction;
the first printing area comprises an input filtering module, the second printing area comprises a power factor correction module, the third printing area comprises a resonance module, and the fourth printing area comprises an output module.
Optionally, the input filtering module includes: an input port and a filter unit, the input port being located at a first side of the filter unit in the second direction;
the filtering unit comprises a first stage Y capacitor, a first filtering inductor, a second stage Y capacitor, a second filtering inductor and a third filtering capacitor which are sequentially arranged along the second direction; the first-stage Y capacitor comprises a first Y capacitor and a second Y capacitor which are sequentially arranged along the first direction, and the second-stage Y capacitor comprises a third Y capacitor and a fourth Y capacitor which are sequentially arranged along the first direction.
Optionally, the first printing area further includes a lightning protection module, and along the second direction, the lightning protection module is located between the input port and the filtering unit;
the lightning protection module comprises a lightning protection unit and a first piezoresistor which are sequentially arranged along a second direction.
Optionally, the first printing area further comprises an anti-impact current module, and the anti-impact current module is located on a first side of the filtering unit in the first direction;
the anti-impact current module comprises a first thermistor, a second piezoresistor and a relay; the second piezoresistor and the first thermistor are sequentially arranged along the second direction, and the second piezoresistor and the relay are sequentially arranged along the first direction.
Optionally, the first printing area further comprises a shielding module, and the shielding module is located at a first side of the filtering unit in the first direction.
Optionally, the power factor correction module includes: the power factor correction device comprises a power factor correction device, a power factor correction control unit, a power factor correction inductor, an auxiliary power supply unit and a power factor correction electrolysis unit, wherein the power factor correction inductor comprises a first power factor correction inductor and a second power factor correction inductor;
the auxiliary power supply unit, the power factor correction inductor, the power factor correction control unit and the power factor correction device are sequentially arranged along the second direction, and the first power factor correction inductor and the second power factor correction inductor are sequentially arranged along the first direction.
Optionally, the resonance module includes: the device comprises a resonant half-bridge power circuit, a resonant capacitor, a resonant inductor, a synchronous rectification circuit and a filter electrolytic capacitor;
along the first direction, the resonant capacitor and the resonant half-bridge power circuit are sequentially arranged, and the filter electrolytic capacitor, the synchronous rectification circuit and the resonant inductor are sequentially arranged; the resonant capacitor and the resonant half-bridge power circuit are positioned at a second side of the resonant inductor in the second direction;
the resonant capacitor comprises a first resonant capacitor, a second resonant capacitor and a third resonant capacitor which are sequentially arranged along the first direction;
the filter electrolytic capacitor includes: the first filter electrolytic capacitor, the second filter electrolytic capacitor, the third filter electrolytic capacitor, the fourth filter electrolytic capacitor, the fifth filter electrolytic capacitor and the sixth filter electrolytic capacitor; along the second direction, the first filter electrolytic capacitor, the second filter electrolytic capacitor and the third filter electrolytic capacitor are sequentially arranged, and the fourth filter electrolytic capacitor, the fifth filter electrolytic capacitor and the sixth filter electrolytic capacitor are sequentially arranged; along the second direction, the fourth filter electrolytic capacitor and the first filter electrolytic capacitor are sequentially arranged, the fifth filter electrolytic capacitor and the second filter electrolytic capacitor are sequentially arranged, and the sixth filter electrolytic capacitor and the third filter electrolytic capacitor are sequentially arranged.
Optionally, the output module includes: the third filter inductor, the fifth Y capacitor and the output port;
the fifth Y capacitor and the output port are sequentially arranged along the first direction, and the output port and the third filter capacitor are sequentially arranged along the second direction.
Optionally, the heights of all components in the input filtering module, the power factor correction module, the resonance module and the output module on the printed circuit board are smaller than or equal to 40mm, the length of the printed circuit board in the second direction is smaller than or equal to 200mm, and the width of the printed circuit board in the first direction is smaller than or equal to 200mm.
Based on the same conception, the embodiment of the utility model also provides a communication power supply, which comprises the layout structure of any printed circuit board.
According to the layout structure of the printed circuit board, provided by the embodiment of the utility model, through reasonably setting the layout structure of the input filter module, the power factor correction module, the resonance module and the output module, the input filter module is utilized to filter interference signals in input electric signals and a large amount of interference electromagnetic waves generated in the working process of the second printing area and the third printing area, so that electromagnetic interference can be reduced, and working performance is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, a brief description will be given below of the drawings required for the embodiments or the description of the prior art, and it is obvious that although the drawings in the following description are specific embodiments of the present utility model, it is obvious to those skilled in the art that the basic concepts of the device structure, the driving method and the manufacturing method, which are disclosed and suggested according to the various embodiments of the present utility model, are extended and extended to other structures and drawings, and it is needless to say that these should be within the scope of the claims of the present utility model.
Fig. 1 is a schematic structural diagram of a printed circuit board according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a communication power supply according to an embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described by means of implementation examples with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the basic concepts disclosed and suggested by the embodiments of the present utility model are within the scope of the present utility model.
Fig. 1 is a schematic structural diagram of a printed circuit board according to an embodiment of the present utility model, and as shown in fig. 1, the printed circuit board 10 comprises a first printed area 100, a second printed area 200, a third printed area 300 and a fourth printed area 400 electrically connected in sequence; the printed circuit board 10 includes a first region 11 and a second region 12 connected to each other; the first region 11 and the second region 12 are sequentially arranged along the first direction X, the first printing region 100 is located in the first region 11, and the second printing region 200, the third printing region 300 and the fourth printing region 400 are located in the second region 12; the fourth printing region 400, the third printing region 300, and the second printing region 200 are sequentially arranged along a second direction Y, which intersects the first direction X; the first printed area 100 includes an input filter module 110, the second printed area 200 includes a power factor correction module 210, the third printed area 300 includes a resonance module 310, and the fourth printed area 400 includes an output module 410.
Specifically, the printed circuit board 10 may be divided into four printed areas, namely, a first printed area 100, a second printed area 200, a third printed area 300 and a fourth printed area 400 according to different functions, and further, for convenience of description of the location arrangement of the printed areas, the printed circuit board 10 is divided into a first area 11 and a second area 12, the first printed area 100 is located in the first area 11, and the second printed area 200, the third printed area 300 and the fourth printed area 400 are located in the second area 12. Referring to fig. 1, the first region 11 and the second region 12 are sequentially arranged in the first direction X, and the fourth printing region 400, the third printing region 300, and the second printing region 200 are sequentially arranged in the second direction Y in the second region 12.
The first printed area 100 is provided with an input filtering module 110, and the input filtering module 110 is used for inputting and filtering the electric signals so as to reduce electromagnetic interference of other printed areas on the printed circuit board 10. The second printing area 200 is provided with a power factor correction module 210, the third printing area 300 is provided with a resonance module 310, the power factor correction module 210 and the resonance module 310 serve as basic functional modules of the printed circuit board 10, the power factor correction module 210 improves the utilization rate of power supply to electricity when alternating current is converted into direct current, reduces the electric energy loss in the conversion process, eliminates the influence of the power supply to other electric appliances when the power supply is suddenly started, is used for carrying out power factor correction, and then is transmitted to a constant voltage or constant current output module, and the resonance module 310 realizes constant output voltage by controlling frequency. The high frequency components in the pfc 210 and resonant 310 may generate a lot of electromagnetic waves during operation, and each printed area may affect the adjacent printed areas by electromagnetic interference between the board layers to generate induced currents, i.e. may interfere with each other during operation, affecting the performance of the printed circuit board 10. The filter module 110 in the first printed area 100 can not only filter out the interference signals in the input electrical signals, but also filter out a large amount of interference electromagnetic waves generated in the working process of the whole printed circuit board 10, namely electromagnetic waves generated in the second printed area 200 and the third printed area 300, thereby reducing electromagnetic interference and improving working performance. The fourth printing area 400 is provided with an output module 410, and the output module 410 is configured to output an electrical signal, and the filtering effect of the input filtering module 110 can enable the output module 410 to output an electrical signal with less clutter.
According to the layout structure of the printed circuit board, provided by the embodiment of the utility model, through reasonably setting the layout structure of the input filter module, the power factor correction module, the resonance module and the output module, the input filter module is utilized to filter interference signals in input electric signals and a large amount of interference electromagnetic waves generated in the working process of the second printing area and the third printing area, so that electromagnetic interference can be reduced, and working performance is improved.
Referring to fig. 1, optionally, the input filtering module 110 includes: an input port 1 and a filter unit 111, the input port 1 being located at a first side of the filter unit 111 in the second direction Y; the filter unit 111 includes first stage Y capacitors (4 and 5), a first filter capacitor 6, a first filter inductor 8, second stage Y capacitors (9 and 10), a second filter capacitor 11, a second filter inductor 12, and a third filter capacitor 13, which are sequentially arranged in the second direction Y; wherein the first stage Y capacitor comprises a first Y capacitor 4 and a second Y capacitor 5 sequentially arranged along the first direction X, and the second stage Y capacitor comprises a third Y capacitor 9 and a fourth Y capacitor 10 sequentially arranged along the first direction X.
Specifically, the input port 1 is used for inputting an electrical signal, the input port 1 is located at a first side of the filter unit 111 in the second direction Y, and referring to fig. 1, i.e., along the second direction Y, the input port 1 is located above the filter unit 111. The Y capacitor, the filter inductor and the filter capacitor in the filter unit 111 are used for filtering the input electrical signal, and can also filter the electromagnetic waves generated by the power factor correction module 210 and the resonance module 310 to reduce electromagnetic interference. The first filter inductor 8 and the second filter inductor 12 may be horizontally encapsulated with amorphous material, so as to reduce the height and increase the inductance.
Referring to fig. 1, optionally, the first printed area 100 further includes a lightning protection module 120, and the lightning protection module 200 is located between the input port 1 and the filtering unit 111 along the second direction Y; the lightning protection module 120 includes the lightning protection unit 2 and the first varistor 3 sequentially arranged along the second direction Y.
The lightning protection module 120 is electrically connected with the input port 1 and the filtering unit 111 respectively, and the lightning protection unit 2 and the first piezoresistor 3 form a lightning protection circuit to provide lightning protection, prevent the printed circuit board 10 from generating interference signals due to lightning surge, further reduce electromagnetic interference and improve the performance of the printed circuit board 10.
The first Y capacitor 4 and the second Y capacitor 5 (first-stage Y capacitor) in the filter unit 111 are not in direct contact with the first varistor 3 in the lightning protection module 120, and the first-stage Y capacitor is located at a different position from the first varistor 3 along the direction perpendicular to the plane of the printed circuit board 10.
Referring to fig. 1, optionally, the first printing area 100 further includes an anti-impact current module 130, the anti-impact current module 130 being located at a first side of the filter unit 111 in the first direction X; the anti-surge current module 130 comprises a first thermistor 16, a second piezoresistor 17 and a relay 18; the second varistor 17 and the first thermistor 16 are arranged in sequence along the second direction Y, and the second varistor 17 and the relay 18 are arranged in sequence along the first direction X.
Illustratively, referring to fig. 1, the anti-impact current module 130 is located at a first side of the filter unit 111 in the first direction X, i.e., along the first direction X, and the anti-impact current module 130 is located at a right side of the filter unit 111. The first thermistor 16, the second piezoresistor 17 and the relay 18 form an anti-impact current circuit, so that anti-impact current protection is provided, interference signals generated by the impact current of the printed circuit board 10 are prevented, and electromagnetic interference is further reduced.
Referring to fig. 1, optionally, the first printing area 100 further includes a shielding module 140, the shielding module 140 being located at a first side of the filtering unit 111 in the first direction X.
Wherein the first side of the filter unit 111 in the first direction X is along the first direction X, and the right side of the filter unit 111. Illustratively, the shielding module 140 may be a shielding plate, which can isolate the primary stage, i.e., the first printing region 100 and the second printing region 200 from the third printing region 300 and the fourth printing region 400, so as to effectively reduce crosstalk between high frequencies, improve stability of the product in a complex power grid, and prolong service life of the product.
Referring to fig. 1, the first printing region 100 may further include: the first rectifier bridge 14, the second rectifier bridge 15, the fourth filter capacitor 20, the CBB film capacitor 19 and the protective tube 7; the first rectifying bridge 14, the second rectifying bridge 15 and the fourth filter capacitor 20 are located at a second side of the filter unit 111 in the second direction Y, and the first rectifying bridge 14, the second rectifying bridge 15 and the fourth filter capacitor 20 are sequentially arranged along the first direction X; the CBB thin film capacitor 19 is located at a first side of the filter unit 111 in the first direction X; in the first direction X, the fuse 7 is located between the filter unit 111 and the shielding module 140. Wherein the filter unit 111 is below the filter unit 111 at a second side in the second direction Y, i.e. along the second direction Y.
Referring to fig. 1, optionally, the power factor correction module 210 includes: a power factor correction device 21, a power factor correction control unit 23, power factor correction inductors (24 and 25), an auxiliary power supply unit 27, and a power factor correction electrolysis unit 30, the power factor correction inductors including a first power factor correction inductor 24 and a second power factor correction inductor 25; the auxiliary power supply unit 27, the power factor correction inductors (24 and 25), the power factor correction control unit 23, and the power factor correction device 21 are sequentially arranged in the second direction Y, and the first power factor correction inductor 24 and the second power factor correction inductor 25 are sequentially arranged in the first direction X.
The pfc device 21, the first pfc inductor 24, the second pfc inductor 25, and the pfc electrolytic unit 30 in the pfc module 210 are all high-frequency components, and a large amount of electromagnetic waves are generated during operation. Illustratively, the pfc device 21 may be a MOS transistor or a diode, which may prevent saturation caused by a large current flowing through the pfc device 21, and damage the switching transistor due to overcurrent. The first power factor correction inductor 24 and the second power factor correction inductor 25 can be manufactured by adopting a sinking process, which is beneficial to reducing the volume, and meanwhile, the magnetic cores of the first power factor correction inductor 24 and the second power factor correction inductor 25 can be tightly attached to the radiator of the printed circuit board 10, so that the radiating efficiency is improved. By utilizing the characteristics of the power factor correction device 21, the first power factor correction inductor 24 and the second power factor correction inductor 25, the indexes of the power source PF value and the THD value can be improved, and the interference to each module on the printed circuit board 10 can be reduced.
In addition, since the first rectifying filter bridge 14 and the second rectifying filter bridge 16 in the filter unit 111 are rectified by unidirectional conduction of the diode, the first power factor correction inductor 24 in the power factor correction module 210 may be electrically connected to the first rectifying filter bridge 14 in the filter unit 111, and the second power factor correction inductor 25 in the power factor correction module 210 may be electrically connected to the second rectifying filter bridge 15 in the filter unit 111, thereby achieving unidirectional transmission of the first printing region 100 to the second printing region 200.
Referring to fig. 1, the power factor correction module 210 may further include: an electrolytic capacitor 26, a fifth filter capacitor 22, a second thermistor 28, and a third rectifier bridge 29; in the second direction Y, the electrolytic capacitor 26 is located between the auxiliary power supply unit 27 and the pfc inductor, and the fifth filter capacitor 22 is located between the pfc device 21 and the pfc control unit 23; the second thermistor 28 and the third rectifier bridge 29 are located at a second side of the power factor correction electrolytic cell 30 in the second direction Y, and the third rectifier bridge 29 is located between the power factor correction electrolytic cell 30 and the second thermistor 28 along the second direction Y.
Referring to fig. 1, optionally, the resonance module 310 includes: the resonant half-bridge power circuit 31, the resonant capacitor 311, the resonant inductor 37, the synchronous rectification circuit 38 and the filter electrolytic capacitor 312; along the first direction X, the resonant capacitor 311 and the resonant half-bridge power circuit 31 are sequentially arranged, and the filter electrolytic capacitor 312, the synchronous rectification circuit 38 and the resonant inductor 37 are sequentially arranged; the resonance capacitor 311 and the resonance half-bridge power circuit 31 are located at a second side of the resonance inductor 37 in the second direction Y; the resonance capacitor 311 includes a first resonance capacitor 33, a second resonance capacitor 34, and a third resonance capacitor 35 sequentially arranged in the first direction X; the filter electrolytic capacitor 312 includes: a first filter electrolytic capacitor 39, a second filter electrolytic capacitor 40, a third filter electrolytic capacitor 41, a fourth filter electrolytic capacitor 42, a fifth filter electrolytic capacitor 43, and a sixth filter electrolytic capacitor 44; along the second direction Y, the first filter electrolytic capacitor 39, the second filter electrolytic capacitor 40, and the third filter electrolytic capacitor 41 are sequentially arranged, and the fourth filter electrolytic capacitor 42, the fifth filter electrolytic capacitor 43, and the sixth filter electrolytic capacitor 44 are sequentially arranged; along the second direction Y, the fourth filter electrolytic capacitor 42 and the first filter electrolytic capacitor 39 are sequentially arranged, the fifth filter electrolytic capacitor 43 and the second filter electrolytic capacitor 40 are sequentially arranged, and the sixth filter electrolytic capacitor 44 and the third filter electrolytic capacitor 41 are sequentially arranged.
The output voltage range of the printed circuit board 10 can be widened by using the resonant module 310, wherein the resonant inductor 37 is a main component of the resonant module 310, and in this embodiment, the resonant inductor 37 is a single integrated output transformer, so that the volume of the resonant inductor 37 can be reduced, the size of the printed circuit board 10 can be further reduced, and meanwhile, the circuit can be simplified. The filter electrolytic capacitor 312 is connected in parallel to the output end of the synchronous rectification circuit 38, and is used for reducing ac ripple coefficient, improving high-efficiency smooth dc output and improving stability of the printed circuit board 10. The resonant module 310 adopts an LLC resonant architecture (resonant inductor 37), and a single integrated output transformer and a synchronous rectification current scheme can enable a circuit connection structure to be simple and stable.
The pfc module 210 is electrically connected to the resonant capacitor 311 in the resonant module 300 through the pfc electrolytic unit 30 therein, and the resonant capacitor 311 may limit the surge current since the current on the inductor in the pfc module 210 cannot be suddenly changed.
The second side of the resonant inductor 37 in the second direction Y is along the second direction Y, and is below the resonant inductor 37.
Referring to fig. 1, optionally, on the basis of the above embodiment, the resonance module 310 may further include: a sixth filter capacitor 32 and a sixth Y capacitor 36; the sixth filter capacitor 32 is located at a second side of the resonant capacitor 311 in the second direction Y, and is located at a second side of the resonant half-bridge power circuit 31 in the first direction X; the sixth Y capacitance 36 is located on the second side of the resonance capacitance 311 in the first direction X. Wherein, the second side of the resonance capacitor 311 in the second direction Y is the lower side of the resonance capacitor 311 along the second direction Y, and the second side of the resonance capacitor 311 in the first direction X is the left side of the resonance capacitor 311 along the first direction X; the second side of the resonant half-bridge power circuit 31 in the first direction X is the left side of the resonant half-bridge power circuit 31 along the first direction X.
Referring to fig. 1, optionally, the output module 410 includes: a third filter inductance 45, a fifth Y capacitance 50 and an output port 48; the fifth Y capacitor 50 and the output port 48 are sequentially arranged along the first direction X, and the output port 48 and the third filter capacitor 45 are sequentially arranged along the second direction Y.
The third filter inductor 45 is electrically connected with the output port 48, the fifth Y capacitor 50 is connected in parallel with the output port 48, the third filter inductor 45 can filter the interference electromagnetic waves generated by the second printing area 200 and the third printing area 300, and transmit the filtered electric signals to the output port 48 to be output through the output port 48, and the fifth Y capacitor 50 can filter the interference signals again, so that the electromagnetic interference is further reduced, and the reliability of the product is improved. The third filter inductor 45 may be an amorphous horizontal package, so as to reduce the height and increase the inductance.
Optionally, on the basis of the above embodiment, the output module 410 may further include: a discharge tube 46, a third varistor 47 and a pin 49; the third piezoresistor 47 and the discharge tube 46 are positioned on a first side of the output port 48 in the first direction X, and the third piezoresistor 47 and the discharge tube 46 are sequentially arranged along the first direction X; the pin header 49 is located at a second side of the third filter inductor 45 in the first direction X, and is located at a second side of the fifth Y capacitor 50 in the second direction Y.
Wherein, the first side of the output port 48 along the first direction X is the right side of the output port 48 along the first direction X; the second side of the third filter inductor 45 in the first direction X is the left side of the third filter inductor 45 along the first direction X; the second side of the fifth Y capacitor 50 in the second direction Y is along the second direction Y, and is below the fifth Y capacitor 50.
Referring to fig. 1, optionally, the height of all components in the input filter module 110, the power factor correction module 210, the resonance module 310, and the output module 410 on the printed circuit board 10 is less than or equal to 40mm, the length of the printed circuit board 10 in the second direction Y is less than or equal to 200mm, and the width of the printed circuit board 10 in the first direction X is less than or equal to 200mm.
In this embodiment, all the switching tube devices are disposed under the printed circuit board 10, and the input filter module 110, the power factor correction module 210, the resonance module 310 and the output module 410 are disposed above the printed circuit board 10, i.e., on opposite sides of the printed circuit board 10, respectively. The height of all components in the printed circuit board 10 is not more than 40mm in a direction perpendicular to the plane of the printed circuit board 10, and the length and width of the printed circuit board 10 are not more than 200mm. The layout structure of the printed circuit board 10 provided by the embodiment of the utility model reduces the size of the printed circuit board 10 by reasonable layout on the basis of ensuring the optimal size of each component, and compared with the traditional base station power supply, the size can be reduced by more than 30%, the size can be 200mm x 193mm, and the utilization rate of the printed circuit board 10 can be improved. In addition, the power of the printed circuit board 10 provided by the embodiment of the utility model is about 800W, and the printed circuit board is suitable for high-power communication power supplies.
Based on the same concept, the embodiment of the present utility model further provides a communication power supply, and fig. 2 is a schematic structural diagram of the communication power supply provided by the embodiment of the present utility model, as shown in fig. 2, where the communication power supply includes any layout structure of the printed circuit board 10 as described above, and has the functional structure and technical effects of the printed circuit board 10 provided by any embodiment of the present utility model, which are not described herein again.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (10)
1. A printed circuit board layout structure is characterized by comprising a first printing area, a second printing area, a third printing area and a fourth printing area which are electrically connected in sequence;
the printed circuit board includes a first region and a second region connected to each other; the first area and the second area are sequentially arranged along the first direction, the first printing area is positioned in the first area, and the second printing area, the third printing area and the fourth printing area are positioned in the second area; the fourth printing area, the third printing area and the second printing area are sequentially arranged along a second direction, and the second direction intersects with the first direction;
the first printing area comprises an input filtering module, the second printing area comprises a power factor correction module, the third printing area comprises a resonance module, and the fourth printing area comprises an output module.
2. The printed circuit board arrangement of claim 1, wherein the input filter module comprises: an input port and a filter unit, the input port being located at a first side of the filter unit in the second direction;
the filtering unit comprises a first stage Y capacitor, a first filtering inductor, a second stage Y capacitor, a second filtering inductor and a third filtering capacitor which are sequentially arranged along the second direction; the first-stage Y capacitor comprises a first Y capacitor and a second Y capacitor which are sequentially arranged along the first direction, and the second-stage Y capacitor comprises a third Y capacitor and a fourth Y capacitor which are sequentially arranged along the first direction.
3. The printed circuit board arrangement of claim 2, wherein the first printed region further comprises a lightning protection module, the lightning protection module being located between the input port and the filter unit along the second direction;
the lightning protection module comprises a lightning protection unit and a first piezoresistor which are sequentially arranged along a second direction.
4. The printed circuit board arrangement of claim 2, wherein the first printed region further comprises an anti-rush current module located on a first side of the filter unit in the first direction;
the anti-impact current module comprises a first thermistor, a second piezoresistor and a relay; the second piezoresistor and the first thermistor are sequentially arranged along the second direction, and the second piezoresistor and the relay are sequentially arranged along the first direction.
5. The printed circuit board arrangement of claim 2, wherein the first printed region further comprises a shielding module located on a first side of the filter unit in the first direction.
6. The printed circuit board arrangement of claim 1, wherein the power factor correction module comprises: the power factor correction device comprises a power factor correction device, a power factor correction control unit, a power factor correction inductor, an auxiliary power supply unit and a power factor correction electrolysis unit, wherein the power factor correction inductor comprises a first power factor correction inductor and a second power factor correction inductor;
the auxiliary power supply unit, the power factor correction inductor, the power factor correction control unit and the power factor correction device are sequentially arranged along the second direction, and the first power factor correction inductor and the second power factor correction inductor are sequentially arranged along the first direction.
7. The printed circuit board arrangement of claim 1, wherein the resonant module comprises: the device comprises a resonant half-bridge power circuit, a resonant capacitor, a resonant inductor, a synchronous rectification circuit and a filter electrolytic capacitor;
along the first direction, the resonant capacitor and the resonant half-bridge power circuit are sequentially arranged, and the filter electrolytic capacitor, the synchronous rectification circuit and the resonant inductor are sequentially arranged; the resonant capacitor and the resonant half-bridge power circuit are positioned at a second side of the resonant inductor in the second direction;
the resonant capacitor comprises a first resonant capacitor, a second resonant capacitor and a third resonant capacitor which are sequentially arranged along the first direction;
the filter electrolytic capacitor includes: the first filter electrolytic capacitor, the second filter electrolytic capacitor, the third filter electrolytic capacitor, the fourth filter electrolytic capacitor, the fifth filter electrolytic capacitor and the sixth filter electrolytic capacitor; along the second direction, the first filter electrolytic capacitor, the second filter electrolytic capacitor and the third filter electrolytic capacitor are sequentially arranged, and the fourth filter electrolytic capacitor, the fifth filter electrolytic capacitor and the sixth filter electrolytic capacitor are sequentially arranged; along the second direction, the fourth filter electrolytic capacitor and the first filter electrolytic capacitor are sequentially arranged, the fifth filter electrolytic capacitor and the second filter electrolytic capacitor are sequentially arranged, and the sixth filter electrolytic capacitor and the third filter electrolytic capacitor are sequentially arranged.
8. The printed circuit board arrangement of claim 2, wherein the output module comprises: the third filter inductor, the fifth Y capacitor and the output port;
the fifth Y capacitor and the output port are sequentially arranged along the first direction, and the output port and the third filter capacitor are sequentially arranged along the second direction.
9. The printed circuit board layout structure of claim 1, wherein a height of all components in the input filter module, the power factor correction module, the resonance module, and the output module on the printed circuit board is less than or equal to 40mm, a length of the printed circuit board in the second direction is less than or equal to 200mm, and a width of the printed circuit board in the first direction is less than or equal to 200mm.
10. A communication power supply comprising the printed circuit board arrangement of any one of claims 1-9.
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| CN202123059449.XU CN218920662U (en) | 2021-12-07 | 2021-12-07 | Printed circuit board layout structure and communication power supply |
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| CN202123059449.XU CN218920662U (en) | 2021-12-07 | 2021-12-07 | Printed circuit board layout structure and communication power supply |
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