CN218920662U - Printed circuit board layout structure and communication power supply - Google Patents

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

A printed circuit board layout structure and communication power supply

technical field

The embodiment of the utility model relates to the technical field of communication power supply, in particular to a layout structure of a printed circuit board and a communication power supply.

Background technique

With the rapid progress of modern technology and the rapid development of the economic level, people's demand for 5G high-power base station communication power is also increasing, and the functional requirements for 5G high-power base station communication power are also getting higher and higher. At the same time, as With the acceleration of 5G communication facilities, people's response speed to 5G high-power base station communication power is getting higher and higher, which makes the types of high-power base station communication power more and more, and the electromagnetic waves generated by high-frequency electronic components will harm People's bodies, and on the printed circuit boards in use, high-frequency electronic components will generate a large number of electromagnetic waves, and the electromagnetic waves will affect the adjacent printed circuit boards to generate induced currents through electromagnetic interference between the board layers, that is, when working. interfere with each other.

Utility model content

The embodiment of the utility model provides a printed circuit board layout structure and a communication power supply, so as to rationally arrange the printed circuit board and reduce electromagnetic interference on the circuit board.

The embodiment of the utility model provides a printed circuit board layout structure, and the printed circuit board population structure includes 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 area and a second area connected to each other; along a first direction, the first area and the second area are arranged in sequence, the first printing area is located in the first area, and the The second printing area, the third printing area and the fourth printing area are located in the second area; along the second direction, the fourth printing area, the third printing area and the second printing area the regions are arranged sequentially, and the second direction intersects with the first direction;

The first printing area includes an input filter module, the second printing area includes a power factor correction module, the third printing area includes a resonance module, and the fourth printing area includes an output module.

Optionally, the input filter module includes: an input port and a filter unit, the input port is located on a first side of the filter unit in the second direction;

The filter unit includes a first-stage Y capacitor, a first filter capacitor, a first filter inductor, a second-stage Y capacitor, a second filter capacitor, a second filter inductor, and a third filter capacitor arranged in sequence along the second direction ; Wherein, the first-stage Y capacitor includes a first Y capacitor and a second Y capacitor arranged in sequence along the first direction, and the second-stage Y capacitor includes a third Y capacitor arranged in sequence along the first direction capacitor and the fourth Y capacitor.

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 includes lightning protection units and first piezoresistors arranged in sequence along the second direction.

Optionally, the first printing area further includes an anti-inrush current module, the anti-inrush current module is located on the first side of the filter unit in the first direction;

The anti-inrush current module includes a first thermistor, a second piezoresistor and a relay; the second piezoresistor and the first thermistor are arranged in sequence along the second direction, and the second piezoresistor The sensitive resistor and the relay are arranged in sequence along the first direction.

Optionally, the first printing area further includes a shielding module, and the shielding module is located on a first side of the filtering unit in the first direction.

Optionally, the power factor correction module includes: 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, and the power factor correction inductor includes a first power factor correction an 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 arranged in sequence along the second direction, the first power factor correction inductor and the second power factor correction The inductors are arranged in sequence along the first direction.

Optionally, the resonant module includes: 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 arranged in sequence, the filter electrolytic capacitor, the synchronous rectification circuit and the resonant inductor are arranged in sequence; the resonant capacitor and the resonant half-bridge a bridge power circuit is located on a second side of the resonant inductor in the second direction;

The resonant capacitor includes a first resonant capacitor, a second resonant capacitor and a third resonant capacitor arranged in sequence along the first direction;

The filter electrolytic capacitor includes: a first filter electrolytic capacitor, a second filter electrolytic capacitor, a third filter electrolytic capacitor, a fourth filter electrolytic capacitor, a fifth filter electrolytic capacitor and a 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 arranged in sequence, and the fourth filter electrolytic capacitor, the fifth filter electrolytic capacitor and the sixth filter electrolytic capacitor are arranged in sequence arrangement; along the second direction, the fourth filter electrolytic capacitor is arranged in sequence with the first filter electrolytic capacitor, the fifth filter electrolytic capacitor is arranged in sequence with the second filter electrolytic capacitor, and the sixth filter electrolytic capacitor is arranged in sequence. The electrolytic capacitor and the third filter electrolytic capacitor are arranged in sequence.

Optionally, the output module includes: a third filter inductor, a fifth Y capacitor, and an output port;

The fifth Y capacitor and the output port are arranged in sequence along the first direction, and the output port and the third filter capacitor are arranged in sequence along the second direction.

Optionally, the heights 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 are less than or equal to 40 mm, and the printed circuit board The length of the board in the second direction is less than or equal to 200mm, and the width of the printed circuit board in the first direction is less than or equal to 200mm.

Based on the same idea, an embodiment of the present utility model also provides a communication power supply, which includes any layout structure of a printed circuit board as described above.

The layout structure of the printed circuit board provided by the embodiment of the utility model, by rationally setting the layout structure of the input filter module, power factor correction module, resonance module and output module, the input filter module is used to filter out the interference signal in the input electrical signal and the first The second printing area and the third printing area generate a large number of interfering electromagnetic waves during the working process, which can reduce electromagnetic interference and improve work performance.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description Although the figures are some specific embodiments of the present utility model, for those skilled in the art, the basic concepts of device structure, driving method and manufacturing method disclosed and suggested by various embodiments of the present utility model can be expanded. And extending to other structures and drawings, there is no doubt that these should be within the scope of the claims of the present utility model.

Fig. 1 is a schematic structural view of a printed circuit board provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a communication power supply provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described through implementation modes with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments It is a part of embodiments of the present utility model, but 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 belong to the protection scope of the present utility model.

Fig. 1 is a schematic structural view of a printed circuit board provided by an embodiment of the present invention. As shown in Fig. 1 , the printed circuit board 10 is populated with a first printed area 100, a second printed area 200, The third printing area 300 and the fourth printing area 400; the printed circuit board 10 includes a first area 11 and a second area 12 connected to each other; along the first direction X, the first area 11 and the second area 12 are arranged in sequence, the first The printing area 100 is located in the first area 11, and the second printing area 200, the third printing area 300 and the fourth printing area 400 are located in the second area 12; along the second direction Y, the fourth printing area 400, the third printing area 300 and the The second printing area 200 is arranged in sequence, and the second direction Y crosses the first direction X; the first printing area 100 includes the input filter module 110, the second printing area 200 includes the power factor correction module 210, and the third printing area 300 includes the resonance module 310. The fourth printing area 400 includes an output module 410.

Specifically, the printed circuit board 10 can be divided into four printing areas according to different functions, which are respectively the first printing area 100, the second printing area 200, the third printing area 300 and the fourth printing area 400. Further, for the convenience of description The position arrangement of each printing area divides the printed circuit board 10 into a first area 11 and a second area 12, the first printing area 100 is located in the first area 11, the second printing area 200, the third printing area 300 and the fourth The printing area 400 is located in the second area 12 . Referring to FIG. 1 , the first area 11 and the second area 12 are arranged sequentially along the first direction X, and the fourth printing area 400, the third printing area 300 and the second printing area 200 are sequentially arranged along the second direction Y in the second area 12. arrangement.

The first printing area 100 is provided with an input filter module 110 , which is used for inputting and filtering electrical signals, so as to reduce electromagnetic interference of other printing areas on the printed circuit board 10 . The second printing area 200 is provided with a power factor correction module 210, and the third printing area 300 is provided with a resonant module 310. The power factor correction module 210 and the resonant module 310 are used as the basic functional modules of the printed circuit board 10. When converting to direct current, it improves the utilization rate of the power supply to electricity, reduces the power loss during the conversion process, and eliminates the impact of the power supply on other electrical appliances when it is suddenly started, and is used for power factor correction, and then transmitted to a similar constant voltage or constant current. As an output module, the resonant module 310 realizes a constant output voltage by controlling the frequency. Some high-frequency components in the power factor correction module 210 and the resonance module 310 will generate a large amount of electromagnetic waves during operation, and each printed area will affect the adjacent printed area to generate induced current through electromagnetic interference between the board layers, that is, during operation They will interfere with each other and affect the performance of the printed circuit board 10 . The setting of the filter module 110 in the first printing area 100 can not only filter out the interference signal in the input electrical signal, but also filter out a large amount of interference electromagnetic waves generated by the entire printed circuit board 10 during operation, that is, the second printing area 200 and the second printing area 200. The electromagnetic waves generated by the third printing area 300 can reduce electromagnetic interference and improve work performance. The fourth printing area 400 is provided with an output module 410 for outputting electrical signals, and the output module 410 can output electrical signals with less clutter after filtering by the input filtering module 110 .

The layout structure of the printed circuit board provided by the embodiment of the utility model, by rationally setting the layout structure of the input filter module, power factor correction module, resonance module and output module, the input filter module is used to filter out the interference signal in the input electrical signal and the first The second printing area and the third printing area generate a large number of interfering electromagnetic waves during the working process, which can reduce electromagnetic interference and improve work performance.

Referring to Fig. 1, optionally, the input filter module 110 includes: an input port 1 and a filter unit 111, the input port 1 is located on the first side of the filter unit 111 in the second direction Y; the filter unit 111 includes sequentially along the second direction Y Arranged first stage Y capacitors (4 and 5), first filter capacitor 6, first filter inductor 8, second stage Y capacitors (9 and 10), second filter capacitor 11, second filter inductor 12 and third Filter capacitor 13; wherein, the first-stage Y capacitor includes a first Y capacitor 4 and a second Y capacitor 5 arranged in sequence along the first direction X, and the second-stage Y capacitor includes a third Y capacitor arranged in sequence along the first direction X 9 and the fourth Y capacitor 10 .

Specifically, the input port 1 is used to input electrical signals, and the input port 1 is located on the first side of the filter unit 111 in the second direction Y. Referring to FIG. 1 , that is, along the second direction Y, the input port 1 is located above the filter unit 111 . The Y capacitor, filter inductor and filter capacitor in the filter unit 111 are used to filter the input electrical signal, and also filter out electromagnetic waves generated by the power factor correction module 210 and the resonance module 310 to reduce electromagnetic interference. Wherein, the first filter inductor 8 and the second filter inductor 12 can be packaged horizontally with an amorphous material to reduce height and increase inductance.

Referring to Fig. 1, on the basis of the above-mentioned embodiment, optionally, the first printing area 100 further includes a lightning protection module 120, and along the second direction Y, the lightning protection module 200 is located between the input port 1 and the filtering unit 111; The lightning module 120 includes lightning protection units 2 and first piezoresistors 3 arranged in sequence along the second direction Y.

The lightning protection module 120 is electrically connected to the input port 1 and the filter unit 111 respectively, and the lightning protection unit 2 and the first varistor 3 form a lightning protection circuit to provide lightning protection and prevent the printed circuit board 10 from generating interference signals due to lightning surges , to further reduce electromagnetic interference and improve the performance of the printed circuit board 10 .

It should be noted that 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 piezoresistor 3 in the lightning protection module 120, and are perpendicular to the printed circuit board. In the direction of the plane where 10 is located, the positions of the first stage Y capacitor and the first piezoresistor 3 are different.

Referring to FIG. 1, optionally, the first printing area 100 further includes an anti-inrush current module 130, and the anti-inrush current module 130 is located on the first side of the filter unit 111 in the first direction X; the anti-inrush current module 130 includes a first thermal The sensitive resistor 16, the second piezoresistor 17 and the relay 18; the second piezoresistor 17 and the first thermistor 16 are arranged in sequence along the second direction Y, and the second piezoresistor 17 and the relay 18 are arranged in sequence along the first direction X arrangement.

For example, referring to FIG. 1 , the anti-inrush current module 130 is located on the first side of the filter unit 111 in the first direction X, that is, along the first direction X, the anti-inrush current module 130 is located on the right side of the filter unit 111 . The first thermistor 16, the second piezoresistor 17 and the relay 18 form an anti-inrush current circuit to provide anti-inrush current protection, prevent the printed circuit board 10 from generating interference signals due to inrush current, and further reduce electromagnetic interference.

Referring to FIG. 1 , optionally, the first printing area 100 further includes a shielding module 140 , and the shielding module 140 is located on the first side of the filtering unit 111 in the first direction X. Referring to FIG.

Wherein, the first side of the filtering unit 111 in the first direction X is the right side of the filtering unit 111 along the first direction X. Exemplarily, the shielding module 140 can be a shielding plate, which can isolate the primary and secondary levels, that is, isolate the first printing area 100 and the second printing area 200 from the third printing area 300 and the fourth printing area 400, which can effectively reduce the high-frequency gap. Crosstalk, improve the stability of the product in the complex power grid, prolong the product life.

Referring to Fig. 1, the first printing area 100 can also include: the first rectifier bridge 14, the second rectifier bridge 15, the fourth filter capacitor 20, the CBB film capacitor 19 and the fuse 7; the first rectifier bridge 14, the second rectifier bridge 15 and the fourth filter capacitor 20 are located on the second side of the filter unit 111 in the second direction Y, and along the first direction X, the first rectifier bridge 14, the second rectifier bridge 15 and the fourth filter capacitor 20 are arranged in sequence; CBB The film capacitor 19 is located on the first side of the filter unit 111 in the first direction X; along the first direction X, the fuse 7 is located between the filter unit 111 and the shielding module 140 . Wherein, the filtering unit 111 is on the second side in the second direction Y, that is, along the second direction Y, below the filtering unit 111 .

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, a power factor correction inductor (24 and 25), an auxiliary power supply unit 27 and a power factor correction electrolysis unit 30, The power factor correction inductance includes a first power factor correction inductance 24 and a second power factor correction inductance 25; an auxiliary power supply unit 27, a power factor correction inductance (24 and 25), a power factor correction control unit 23 and a power factor correction device 21 along the first The two directions Y are arranged sequentially, and the first power factor correction inductor 24 and the second power factor correction inductor 25 are arranged sequentially along the first direction X.

The power factor correction device 21, the first power factor correction inductor 24, the second power factor correction inductor 25 and the power factor correction electrolysis unit 30 in the power factor correction module 210 are all high-frequency components, which generate a large amount of electromagnetic waves during operation. Exemplarily, the power factor correction device 21 can be a MOS tube and a diode, which can prevent a large current from flowing through the power factor correction device 21 to cause saturation and overcurrent damage to the switch tube. The first power factor correction inductance 24 and the second power factor correction inductance 25 can be manufactured using a sinking process, which is conducive to reducing the volume, and at the same time the magnetic cores of the first power factor correction inductance 24 and the second power factor correction inductance 25 can be compact Paste the heat sink of the printed circuit board 10 to improve heat dissipation efficiency. By using the characteristics of the power factor correction device 21 and the first power factor correction inductor 24 and the second power factor correction inductor 25 , the PF value and THD value index of the power supply can be improved, and the interference to each module on the printed circuit board 10 can be reduced.

In addition, since the first rectifying and filtering bridge 14 and the second rectifying and filtering bridge 16 in the filtering unit 111 are rectified by utilizing the unidirectional conductivity of diodes, the first power factor correction inductor in the power factor correction module 210 can be 24 is electrically connected to the first rectifier and filter bridge 14 in the filter unit 111, and the second power factor correction inductor 25 in the power factor correction module 210 is electrically connected to the second rectifier and filter bridge 15 in the filter unit 111, thereby realizing the first One-way transfer from the printing zone 100 to the second printing zone 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; along the second direction Y, the electrolytic capacitor 26 is located in the auxiliary power supply unit 27 and the power factor correction inductor, the fifth filter capacitor 22 is located between the power factor correction device 21 and the power factor correction control unit 23; the second thermistor 28 and the third rectifier bridge 29 are located in the power factor correction electrolytic unit 30 On the second side in the second direction Y, and along the second direction Y, the third rectifier bridge 29 is located between the power factor correction electrolysis unit 30 and the second thermistor 28 .

Referring to FIG. 1, optionally, the resonant module 310 includes: a resonant half-bridge power circuit 31, a resonant capacitor 311, a resonant inductor 37, a synchronous rectification circuit 38, and a filter electrolytic capacitor 312; along the first direction X, the resonant capacitor 311 and the resonant half bridge The bridge power circuit 31 is arranged in sequence, the filter electrolytic capacitor 312, the synchronous rectification circuit 38 and the resonant inductor 37 are arranged in sequence; the resonant capacitor 311 and the resonant half-bridge power circuit 31 are located on the second side of the resonant inductor 37 in the second direction Y; the resonant capacitor 311 includes the first resonant capacitor 33, the second resonant capacitor 34 and the third resonant capacitor 35 arranged in sequence along the first direction X; the filter electrolytic capacitor 312 includes: the first filter electrolytic capacitor 39, the second filter electrolytic capacitor 40, the third Filter electrolytic capacitor 41, fourth filter electrolytic capacitor 42, fifth filter electrolytic capacitor 43 and 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 The capacitors 41 are arranged in sequence, the fourth filter electrolytic capacitor 42, the fifth filter electrolytic capacitor 43 and the sixth filter electrolytic capacitor 44 are arranged in sequence; along the second direction Y, the fourth filter electrolytic capacitor 42 and the first filter electrolytic capacitor 39 are arranged in sequence, The fifth filter electrolytic capacitor 43 is arranged sequentially with the second filter electrolytic capacitor 40 , and the sixth filter electrolytic capacitor 44 is arranged sequentially with the third filter electrolytic capacitor 41 .

The output voltage range of the printed circuit board 10 can be widened by using the resonant module 310, wherein the resonant inductance 37 is the main component of the resonant module 310, and the resonant inductance 37 is a single integrated output transformer in this embodiment, so that the resonant inductance 37 can be reduced The size of the printed circuit board 10 can be reduced, and the circuit can be simplified at the same time. The filter electrolytic capacitor 312 is connected in parallel with the output end of the synchronous rectification circuit 38 to reduce the AC ripple coefficient, improve the high-efficiency and smooth DC output, and improve the stability of the printed circuit board 10 . The resonant module 310 adopts an LLC resonant structure (resonant inductor 37 ), a single integrated output transformer, and a synchronous rectification current scheme, which can make the circuit connection structure simple and stable.

The power factor correction module 210 is electrically connected to the resonant capacitor 311 in the resonant module 300 through the power factor corrected electrolytic unit 30 therein. Since the current on the inductor in the power factor corrected module 210 cannot change abruptly, the resonant capacitor 311 can limit the inrush current effect.

It should be noted that, the second side of the resonant inductor 37 in the second direction Y is along the second direction Y, below the resonant inductor 37 .

Referring to FIG. 1 , optionally, on the basis of the above-mentioned embodiments, the resonant module 310 may further include: a sixth filter capacitor 32 and a sixth Y capacitor 36; the sixth filter capacitor 32 is located in the second direction Y of the resonant capacitor 311 and located on the second side of the resonant half-bridge power circuit 31 in the first direction X; the sixth Y capacitor 36 is located on the second side of the resonant capacitor 311 in the first direction X. Wherein, the second side of the resonant capacitor 311 in the second direction Y is below the resonant capacitor 311 along the second direction Y, and the second side of the resonant capacitor 311 in the first direction X is the side of the resonant capacitor 311 along the first direction X. Left side; 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 inductor 45, a fifth Y capacitor 50, and an output port 48; the fifth Y capacitor 50 and the output port 48 are arranged in sequence along the first direction X, and the output port 48 and the The third filter capacitors 45 are arranged in sequence along the second direction Y.

The third filter inductance 45 is electrically connected to the output port 48, and the fifth Y capacitor 50 is connected in parallel with the output port 48. The third filter inductance 45 can filter out the interference electromagnetic waves generated by the second printing area 200 and the third printing area 300, and filter The final electrical signal is transmitted to the output port 48 and output through the output port 48, and the fifth Y capacitor 50 can filter again to filter out the interference signal, so as to further reduce the electromagnetic interference and improve the reliability of the product. Wherein, the third filter inductor 45 can be packaged horizontally with an amorphous material, so as to reduce the height and increase the inductance.

Optionally, on the basis of the above embodiments, the output module 410 may further include: a discharge tube 46, a third piezoresistor 47 and a pin header 49; the third piezoresistor 47 and the discharge tube 46 are located at the output port 48 at the The first side in a direction X, and along the first direction X, the third piezoresistor 47 and the discharge tube 46 are arranged in sequence; the header pin 49 is located on the second side of the third filter inductor 45 in the first direction X, and Located on the second side of the fifth Y capacitor 50 in the second direction Y.

Wherein, the first side of the output port 48 in the first direction X is along the first direction X, the right side of the output port 48; the second side of the third filter inductor 45 in the first direction X is along the first direction X. Direction X, the left side of the third filter inductor 45 ; the second side of the fifth Y capacitor 50 in the second direction Y is along the second direction Y, below the fifth Y capacitor 50 .

Referring to FIG. 1, optionally, the heights of all the 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 are less than or equal to 40 mm, and the printed circuit board 10 is placed on the The length in the second direction Y is less than or equal to 200 mm, and the width of the printed circuit board 10 in the first direction X is less than or equal to 200 mm.

In this embodiment, all switching tube devices are arranged 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 arranged on the printed circuit board 10, that is, they are respectively located on the printed circuit board 10 opposite sides. Along the direction perpendicular to the plane where the printed circuit board 10 is located, the height of all components in the printed circuit board 10 does not exceed 40 mm, and the length and width of the printed circuit board 10 do not exceed 200 mm. The layout structure of the printed circuit board 10 provided by the embodiment of the utility model, on the basis of ensuring the optimal size of each component, reduces the size of the printed circuit board 10 through a reasonable layout. Compared with the traditional base station power supply, the size can be It can be reduced by more than 30%, and can be 200mm*193mm, which can improve the utilization rate of the printed circuit board 10 . In addition, the power of the printed circuit board 10 provided by the embodiment of the present invention is about 800W, which is suitable for high-power communication power supply.

Based on the same idea, the embodiment of the utility model also provides a communication power supply. Figure 2 is a schematic structural diagram of a communication power supply provided by the embodiment of the utility model. As shown in Figure 2, the communication power supply includes any of the above-mentioned A layout structure of a printed circuit board 10, which has the functional structure and technical effects of the printed circuit board 10 provided by any embodiment of the present invention, and will not be repeated here.

Note that the above are only preferred embodiments of the present invention and the applied technical principles. Those skilled in the art will understand that the utility model is not limited to the specific embodiments described here, and various obvious changes, readjustments, mutual combinations and substitutions can be made by those skilled in the art without departing from the protection of the utility model scope. Therefore, although the utility model has been described in detail through the above embodiments, the utility model is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the utility model. The scope of the present invention is determined by the appended claims.

Claims (10)

1. A printed circuit board layout structure, characterized in that it comprises a first printing area, a second printing area, a third printing area and a fourth printing area electrically connected in sequence; The printed circuit board includes a first area and a second area connected to each other; along a first direction, the first area and the second area are arranged in sequence, the first printing area is located in the first area, and the The second printing area, the third printing area and the fourth printing area are located in the second area; along the second direction, the fourth printing area, the third printing area and the second printing area the regions are arranged sequentially, and the second direction intersects with the first direction; The first printing area includes an input filter module, the second printing area includes a power factor correction module, the third printing area includes a resonance module, and the fourth printing area includes an output module. 2. The printed circuit board layout structure according to claim 1, wherein the input filter module comprises: an input port and a filter unit, the input port is located at the second position of the filter unit in the second direction side; The filter unit includes a first-stage Y capacitor, a first filter capacitor, a first filter inductor, a second-stage Y capacitor, a second filter capacitor, a second filter inductor, and a third filter capacitor arranged in sequence along the second direction ; Wherein, the first-stage Y capacitor includes a first Y capacitor and a second Y capacitor arranged in sequence along the first direction, and the second-stage Y capacitor includes a third Y capacitor arranged in sequence along the first direction capacitor and the fourth Y capacitor. 3. The printed circuit board layout structure according to claim 2, wherein 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 between the filter units; The lightning protection module includes lightning protection units and first piezoresistors arranged in sequence along the second direction. 4. The printed circuit board layout structure according to claim 2, wherein the first printing area further includes an anti-inrush current module, and the anti-inrush current module is located in the first direction of the filter unit the first side of The anti-inrush current module includes a first thermistor, a second piezoresistor and a relay; the second piezoresistor and the first thermistor are arranged in sequence along the second direction, and the second piezoresistor The sensitive resistor and the relay are arranged in sequence along the first direction. 5. The printed circuit board layout structure according to claim 2, wherein the first printing area further comprises a shielding module, and the shielding module is located on the first side of the filtering unit in the first direction . 6. The printed circuit board layout structure according to claim 1, wherein the power factor correction module 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 An electrolysis unit, the power factor correction inductor includes 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 arranged in sequence along the second direction, the first power factor correction inductor and the second power factor correction The inductors are arranged in sequence along the first direction. 7. The printed circuit board layout structure according to claim 1, wherein the resonant module 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 arranged in sequence, the filter electrolytic capacitor, the synchronous rectification circuit and the resonant inductor are arranged in sequence; the resonant capacitor and the resonant half-bridge a bridge power circuit is located on a second side of the resonant inductor in the second direction; The resonant capacitor includes a first resonant capacitor, a second resonant capacitor and a third resonant capacitor arranged in sequence along the first direction; The filter electrolytic capacitor includes: a first filter electrolytic capacitor, a second filter electrolytic capacitor, a third filter electrolytic capacitor, a fourth filter electrolytic capacitor, a fifth filter electrolytic capacitor and a 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 arranged in sequence, and the fourth filter electrolytic capacitor, the fifth filter electrolytic capacitor and the sixth filter electrolytic capacitor are arranged in sequence arrangement; along the second direction, the fourth filter electrolytic capacitor is arranged in sequence with the first filter electrolytic capacitor, the fifth filter electrolytic capacitor is arranged in sequence with the second filter electrolytic capacitor, and the sixth filter electrolytic capacitor is arranged in sequence. The electrolytic capacitor and the third filter electrolytic capacitor are arranged in sequence. 8. The printed circuit board layout structure according to claim 2, wherein the output module comprises: a third filter inductor, a fifth Y capacitor and an output port; The fifth Y capacitor and the output port are arranged in sequence along the first direction, and the output port and the third filter capacitor are arranged in sequence along the second direction. 9. The printed circuit board layout structure according to claim 1, wherein all components in the input filter module, the power factor correction module, the resonance module and the output module are on the printed circuit board The heights on the circuit boards are all less than or equal to 40mm, the length of the printed circuit board in the second direction is less than or equal to 200mm, and the width of the printed circuit board in the first direction is less than or equal to 200mm. 10. A communication power supply, characterized by comprising the printed circuit board layout structure according to any one of claims 1-9.

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