Micropower module structure, micropower isolation power supply module and power supply module

Abstract

The utility model relates to the technical field of electronic devices, and discloses a micro-power module structure, a micro-power isolation power module and a power module, and the micro-power module structure comprises a transformer which is provided with a drum-shaped magnetic core, a conductive coil and a magnetic cover plate, the drum-shaped magnetic core comprises a wrapping post, a first mounting part and a second mounting part, wherein the first mounting part and the second mounting part are integrally formed and constructed at the two ends of the wrapping post. A plurality of pins are arranged on one side, deviating from the magnetic conductive cover plate, of the first mounting part, a plurality of pins are arranged on one side, deviating from the magnetic conductive cover plate, of the second mounting part, and one side, deviating from the magnetic conductive cover plate, of each pin is in a plane shape; and the carrier plate is provided with a plurality of bonding pads which are in one-to-one correspondence with the pins on the first mounting part and the second mounting part. According to the invention, the condition that the carrier plate around a welding spot cracks due to the adoption of spot welding in the prior art can be effectively avoided, the reject ratio of module products can be effectively reduced, and the miniaturization design of micro-power module products can be fully met.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic devices, and in particular, relates to a micro-power module structure, a micro-power isolation power supply module and a power supply module. Background Art

[0002] Most of the isolation transformers used in existing isolation power modules are magnetic toroidal transformers. The installation of the magnetic toroidal transformer and the carrier requires the wire ends of the conductive coil to be manually spot welded to the pads of the carrier, which will cause the carrier to be squeezed by the welding tool during welding, which can easily lead to cracks in the carrier around the welding points after spot welding. The product defect rate is high. At the same time, since the wire ends of the conductive coil need to be manually grasped and welded one by one during spot welding, there are problems such as difficult operation, low welding efficiency, and difficulty in achieving automated welding.

[0003] In addition, due to the characteristics of the toroidal transformer itself being a circular ring structure, the installation of the toroidal transformer and the carrier requires the end of the conductive coil to be extended outward by a certain length, and space needs to be reserved for manual spot welding operations. However, for the design of the micro-power isolated power supply module, it is necessary to reduce the area of ​​the carrier and the volume of the toroidal transformer, which reduces the distribution spacing of the pads on the carrier. Therefore, it is necessary to shorten the extension length of the conductive coil end of the toroidal transformer, resulting in insufficient spot welding space for the conductive coil end of the toroidal transformer on the carrier, which is not convenient for spot welding operations. Therefore, the toroidal transformer is difficult to meet the requirements of the micro-power isolated power supply module for miniaturized module design. Utility Model Content

[0004] The present application provides a micro-power module structure, a micro-power isolated power supply module and a power supply module, aiming to solve the problem in the prior art that the installation of the magnetic ring transformer by spot welding easily causes cracks on the carrier board around the welding points and is difficult to achieve automated welding, as well as the problem that it is difficult to meet the requirements of the micro-power isolated power supply module for a miniaturized module design.

[0005] In one embodiment, a micropower module structure includes:

[0006] A transformer, the transformer comprising a drum-shaped magnetic core, a conductive coil and a magnetic conductive cover sheet, the drum-shaped magnetic core comprising a winding post and a first mounting portion and a second mounting portion integrally formed and constructed at both ends of the winding post, the conductive coil is wound on the winding post, and the magnetic conductive cover sheet is attached to one side of the first mounting portion and the second mounting portion;

[0007] A plurality of pins are arranged on a side of the first mounting portion away from the magnetic conductive cover sheet, and a plurality of pins are arranged on a side of the second mounting portion away from the magnetic conductive cover sheet, and a side of each pin away from the magnetic conductive cover sheet is in a planar shape;

[0008] A carrier board having a plurality of pads corresponding one-to-one to the pins on the first mounting portion and the second mounting portion;

[0009] Each of the pins is respectively attached to and fixedly connected to a corresponding pad.

[0010] In one embodiment, the pins include a first pin, a second pin, a third pin and a fourth pin;

[0011] The first mounting portion has a first mounting surface and a first mating surface parallel to each other, and the first mounting portion is configured with a first pin setting portion and a second pin setting portion protruding relative to the first mounting surface; the second mounting portion has a second mounting surface and a second mating surface parallel to each other, and the second mounting portion is configured with a third pin setting portion and a fourth pin setting portion protruding relative to the second mounting surface;

[0012] The first pin, the second pin, the third pin and the fourth pin are respectively arranged on the first pin arrangement portion, the second pin arrangement portion, the third pin arrangement portion and the fourth pin arrangement portion;

[0013] The first pin, the second pin, the third pin and the fourth pin have a plane shape at a side away from the magnetic conductive cover sheet.

[0014] In one embodiment, one side of the magnetic cover sheet is respectively in contact with the first mating surface and the second mating surface, and the side of the magnetic cover sheet facing away from the winding column has a planar suction surface, and the sides of the first pin, the second pin, the third pin and the fourth pin facing away from the magnetic cover sheet are arranged parallel to the suction surface.

[0015] In one embodiment, the conductive coil has four ends, which are respectively embedded in the first pin, the second pin, the third pin and the fourth pin, and the ends do not protrude from a side of the first pin, the second pin, the third pin and the fourth pin that is away from the magnetic cover plate.

[0016] In one embodiment, the first pin setting portion, the second pin setting portion, the third pin setting portion and the fourth pin setting portion are respectively constructed with a first pin setting groove, a second pin setting groove, a third pin setting groove and a fourth pin setting groove which are recessed toward one side of the winding column, and the first pin, the second pin, the third pin and the fourth pin are respectively arranged in the first pin setting groove, the second pin setting groove, the third pin setting groove and the fourth pin setting groove.

[0017] In one embodiment, projections of the pad, the first pin, the second pin, the third pin, and the fourth pin on the same horizontal plane are substantially in the shape of a rectangular surface.

[0018] In one solution, the material of the carrier is the same as the packaging material of the micro power module.

[0019] In one embodiment, a step opening is configured on a side of the first pin setting portion, the second pin setting portion, the third pin setting portion, and the fourth pin setting portion adjacent to the winding post.

[0020] In one embodiment, a micro-power isolated power supply module is provided, comprising the micro-power module structure as described above.

[0021] In one embodiment, a power supply module is provided, comprising the micro-power module structure as described above.

[0022] Beneficial effects of this application:

[0023] The present application makes one side of each pin of the transformer fit and connect with the pad into a planar structure matching the pad. On the one hand, the installation of the transformer and the carrier board can be achieved by aligning and fitting each pin with the pad one by one and then adopting reflow soldering, thereby avoiding the situation in the prior art where cracks appear on the carrier board around the soldering points due to spot welding, which can effectively reduce the defective rate of module products; on the other hand, it effectively shortens the extension length required for the conductive coil end to be electrically connected to the carrier board, and there is no need to reserve welding space for the connection between the pin and the pad, which can meet the design requirements of reducing the carrier board area in the micro-power module, and can effectively reduce the volume of the module product, effectively solving the problem that the use of magnetic ring transformers in the prior art is difficult to meet the requirements of the micro-power isolation power supply module for miniaturized module volume design.

[0024] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. It is obvious that the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 is a three-dimensional schematic diagram of a micro-power module structure in an embodiment of the present application;

[0027] Figure 2 is a schematic front view of a micro-power module structure in one embodiment of the present application;

[0028] Figure 3 is an exploded schematic diagram of a micro-power module structure in one embodiment of the present application;

[0029] Figure 4 is an exploded schematic diagram of a micro-power module structure in one embodiment of the present application;

[0030] Figure 5 is a front exploded schematic diagram of a micro-power module structure in one embodiment of the present application;

[0031] Figure 6 is a schematic projection diagram of a first pin and a pad in the same horizontal plane in an embodiment of the present application;

[0032] Figure 7 is an exploded schematic diagram of pins and a pin setting portion in one embodiment of the present application;

[0033] Figure 8 yes Figure 3 A magnified view of part A.

[0034] Reference numerals in the figures:

[0035] 10. Transformer;

[0036] 1. Drum core; 11. Winding post; 12. First mounting portion; 13. Second mounting portion; 121. First mounting surface; 122. First mating surface; 123. First pin setting portion; 124. Second pin setting portion; 131. Second mounting surface; 132. Second mating surface; 133. Third pin setting portion; 134. Fourth pin setting portion;

[0037] 1231, first pin arrangement slot; 1241, second pin arrangement slot; 1331, third pin arrangement slot; 1341, fourth pin arrangement slot; 1230, step opening;

[0038] 2. Conductive coil; 3. Magnetic cover sheet; 31. Suction surface;

[0039] 4, pin; 41, first pin; 42, second pin; 43, third pin; 44, fourth pin;

[0040] 20. Carrier board; 5. Solder pad. DETAILED DESCRIPTION

[0041] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] In this application, the concept of "roughly" describes the main features of an overall structure or shape. When describing the shape of an object, it means that the object mainly presents a certain shape, but may differ in non-functional details. These detailed differences do not affect the overall characteristics, so they can be classified as "roughly" a certain shape. For example, when describing a rectangular object, the expression "roughly rectangular" means that the overall shape of the object is a rectangle, but there are differences in certain non-functional details. Similarly, when describing a cube, the expression "roughly cubic" means that the overall shape of the object is a cube, but there are differences in certain non-functional details.

[0048] In the prior art, most of the isolation transformers used in the isolation power module are magnetic toroidal transformers, and the installation of the magnetic toroidal transformer and the carrier board needs to be completed by manual spot welding, which easily causes cracks on the carrier board around the welding point, resulting in a high product defect rate and difficulty in achieving automated welding. In addition, since the magnetic toroidal transformer occupies a large board area, it is difficult to meet the requirements of the micro-power isolation power module for the miniaturized module design. In the embodiment of the present application, micro-power refers to power below 10w.

[0049] In view of the above problems, the present application makes improvements and innovations and proposes the following embodiments.

[0050] In some embodiments, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , provides a micro power module structure, including:

[0051] The transformer 10 comprises a drum-shaped magnetic core 1, a conductive coil 2 and a magnetic cover sheet 3. The drum-shaped magnetic core 1 comprises a winding post 11 and a first mounting portion 12 and a second mounting portion 13 integrally formed and constructed at both ends of the winding post 11. The conductive coil 2 is wound on the winding post 11, and the magnetic cover sheet 3 is attached to one side of the first mounting portion 12 and the second mounting portion 13.

[0052] A plurality of pins 4 are arranged on the side of the first mounting portion 12 away from the magnetic cover sheet 3, and a plurality of pins 4 are arranged on the side of the second mounting portion 13 away from the magnetic cover sheet 3. The side of each pin 4 away from the magnetic cover sheet 3 is in a planar shape.

[0053] A carrier board 20 having a plurality of pads 5 corresponding to the pins 4 on the first mounting portion 12 and the second mounting portion 13;

[0054] Each pin 4 is respectively attached to a corresponding pad 5 and fixedly connected thereto.

[0055] In this way, by adopting the patch transformer 10 of the above structure, and making the side of each pin 4 on the transformer 10 away from the magnetic cover plate 3 to be planar, that is: the side surface that is fitted and connected to the pad 5 on the carrier 20 is a planar structure, and at the same time, the position and number of each pin 4 correspond to the pad 5 on the carrier 20. Therefore, when installing the transformer 10 and the carrier 20, first apply solder paste on the pad 5, so that each pin 4 is aligned with each pad 5 one by one and attached to the corresponding pad 5, and then the transformer 10 can be fixedly installed on the carrier 20 by reflow soldering, without the need for manual spot welding, avoiding the situation in the prior art where cracks appear on the carrier 20 around the soldering point due to spot welding, which can effectively reduce the defective rate of the module product, and at the same time, there is no need to manually grab the wire ends of the conductive coil 2 to complete the welding one by one, which simplifies the welding operation, realizes automatic welding, and effectively improves the welding efficiency.

[0056] In addition, relative to the toroidal transformer, by adopting the patch transformer 10 of the above structure, the pins 4 of the transformer 10 electrically connected to the carrier 20 are all located on the first mounting portion 12 and the second mounting portion 13 at both ends of the winding column 11 of the drum-shaped magnetic core 1. The electrical connection between the end of the conductive coil 2 and the carrier 20 can be achieved by connecting each pin 4 to its corresponding pad 5, which effectively shortens the extension length required for the end of the conductive coil 2 to be electrically connected to the carrier 20. At the same time, there is no need to reserve welding space for the connection between the pin 4 and the pad 5, which can adapt to the design requirements of reducing the area of ​​the carrier in the micro-power module, can effectively reduce the volume of the module product, can fully meet the miniaturization design of the micro-power module product, is suitable for the production of micro-power power supply modules, and effectively solves the problem in the prior art that the toroidal transformer is difficult to meet the requirements of the micro-power isolation power supply module for miniaturization design of the module volume.

[0057] In some embodiments, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , pin 4 includes a first pin 41, a second pin 42, a third pin 43 and a fourth pin 44;

[0058] The first mounting portion 12 has a first mounting surface 121 and a first mating surface 122 parallel to each other, and a first pin setting portion 123 and a second pin setting portion 124 protruding relative to the first mounting surface 121 are configured on the first mounting portion 12; the second mounting portion 13 has a second mounting surface 131 and a second mating surface 132 parallel to each other, and a third pin setting portion 133 and a fourth pin setting portion 134 protruding relative to the second mounting surface 131 are configured on the second mounting portion 13;

[0059] The first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 are respectively disposed on the first pin setting portion 123, the second pin setting portion 124, the third pin setting portion 133 and the fourth pin setting portion 134;

[0060] The first pin 41 , the second pin 42 , the third pin 43 and the fourth pin 44 have a plane shape at a side away from the magnetic conductive cover plate 3 .

[0061] In this way, by making the side of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 of the patch transformer 10 facing away from the magnetic cover sheet 3 flat, that is, the side of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 that are connected to the pad 5 on the carrier 20 is a flat structure, and at the same time, the position and number of each pin 4 correspond to the pad 5 on the carrier 20 one by one, so when installing the transformer 10 and the carrier 20, first apply solder paste on the pad 5 , so that each pin 4 is aligned with each pad 5 one by one and attached to the corresponding pad 5, the transformer 10 can be fixedly installed on the carrier 20 by reflow soldering. Therefore, when installing the transformer 10 and the carrier 20, solder paste is first applied on the pad 5, so that the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 are aligned with the pad 5 one by one and attached to the corresponding pad 5, and then the transformer 10 can be fixedly installed on the carrier 20 by reflow soldering.

[0062] In some embodiments, see Figure 2 , Figure 3 , Figure 4 , Figure 5 One side of the magnetic cover sheet 3 is respectively in contact with the first mating surface 122 and the second mating surface 132, and the side of the magnetic cover sheet 3 facing away from the winding pole 11 has a planar suction surface 31, and the sides of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 facing away from the magnetic cover sheet 3 are arranged parallel to the suction surface 31.

[0063] In this way, by making the side of the magnetic cover sheet 3 facing away from the winding pole 11 a planar suction surface 31, during the installation process of the transformer 10 and the carrier 20, the laminating machine can absorb the transformer 10 through the negative pressure of the suction surface 31 to pick up and place the transformer 10, and the automatic installation of the transformer 10 and the carrier 20 can be realized, thereby effectively improving the installation efficiency of the transformer 10 and the carrier 20, and effectively improving the alignment accuracy of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 with the pad 5, thereby effectively improving the installation accuracy of the transformer 10, thereby improving the welding efficiency of the module product and improving the quality of the module product.

[0064] In addition, by arranging the side of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 facing away from the magnetic cover plate 3 in parallel with the suction surface 31, the side surfaces of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 that are in contact with the pad 5 can be all in a plane parallel to the suction surface 31, so that the side surfaces of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 that are in contact with the pad 5 are in coplanar planes, thereby ensuring the consistency of the contact between the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 and the pad 5, and effectively ensuring the stability of the transformer 10 when it is placed on the carrier 20, thereby ensuring the welding accuracy of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 of the transformer 10 and the pad 5 on the carrier 20, thereby ensuring the quality of the module product.

[0065] In some embodiments, see Figure 1 , Figure 2 , Figure 3 , Figure 5 , the conductive coil 2 has four ends, and the four ends are respectively embedded in the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44, and the ends do not protrude from the side of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 away from the magnetic conductive cover sheet 3. In this way, by respectively arranging the four ends of the conductive coil 2 at positions that do not protrude from the side of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 away from the magnetic conductive cover sheet 3, it can be ensured that the side of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 that are attached to the pad 5 is always a coplanar plane, thereby ensuring the consistency of the attachment of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 to the pad 5.

[0066] In some embodiments, see Figure 1 , Figure 2 , Figure 3 , Figure 6The first pin setting part 123, the second pin setting part 124, the third pin setting part 133 and the fourth pin setting part 134 are respectively constructed with a first pin setting groove 1231, a second pin setting groove 1241, a third pin setting groove 1331 and a fourth pin setting groove 1341 which are recessed toward the side of the winding column 11, and the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 are respectively arranged in the first pin setting groove 1231, the second pin setting groove 1241, the third pin setting groove 1331 and the fourth pin setting groove 1341. In this way, when the transformer 10 and the carrier board 20 are welded by the reflow oven, the end of the conductive coil 2 between each pin 4 and its corresponding pad 5 is in a state of being clamped by each pin setting groove and the pad 5, the end of the conductive coil 2 is firmly fixed, the transformer 10 is not easy to fall off, and the module structure has high strength and good stability.

[0067] Specifically, one side of the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44, which are fitted and connected to the pad 5, slightly protrudes from the first pin setting portion 123, the second pin setting portion 124, the third pin setting portion 133 and the fourth pin setting portion 134. In this way, on the one hand, it can avoid contact or collision between the pin setting portion and the pad 5 when mounting the transformer 10, and on the other hand, it can improve the solderability of the transformer 10.

[0068] In some embodiments, see Figure 1 , Figure 7 The projections of the pad 5, the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 on the same horizontal plane are roughly rectangular, or other shapes with a certain area, such as triangle, circle, trapezoid, etc., which can be in contact with the pad 5 surface and leave enough space for connecting the end of the conductive coil 2. Therefore, by adopting the pad 5, the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 with a roughly rectangular cross-section, the contact area between the first pin 41, the second pin 42, the third pin 43, the fourth pin 44 and the pad 5 is increased, thereby effectively improving the stability of the transformer 10 when placed on the carrier 20, and improving the firmness of the first pin 41, the second pin 42, the third pin 43, the fourth pin 44 and the pad 5 during reflow soldering, so as to ensure the quality of the module product.

[0069] In some embodiments, see Figure 1 , Figure 2 The material of the carrier board 20 is the same as the packaging material of the micro power module. In this way, the carrier board 20 and the packaging material of the module have good matching properties, which can ensure that the packaging structure is stable and reliable, thereby improving the quality of the micro power module product; specifically, the carrier board 20 can be selected from a Mis board or a PCB board.

[0070] In some embodiments, see Figure 1 , Figure 3 , Figure 6 , Figure 8 The first pin setting part 123, the second pin setting part 124, the third pin setting part 133 and the fourth pin setting part 134 are configured with a stepped opening 1230 on one side adjacent to the winding post 11. In this way, the stepped opening 1230 can ensure that there is sufficient spacing between the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 and the winding post 11, thereby ensuring the withstand voltage distance between the first pin 41, the second pin 42, the third pin 43 and the fourth pin 44 and the conductive coil 2.

[0071] In some embodiments, see Figure 1 , Figure 2 , provides a micro-power isolated power supply module, including the micro-power module structure as described in the aforementioned embodiment.

[0072] In some embodiments, see Figure 1 , Figure 2 , provides a power module, including the micro-power module structure as described in the above-mentioned embodiment.

[0073] Finally, it should be noted that although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application, which should all be included in the scope of protection of the present application.

Claims

1. A micro-power module structure, characterized in that: include: A transformer, the transformer comprising a drum-shaped magnetic core, a conductive coil and a magnetic conductive cover sheet, the drum-shaped magnetic core comprising a winding post and a first mounting portion and a second mounting portion integrally formed and constructed at both ends of the winding post, the conductive coil is wound on the winding post, and the magnetic conductive cover sheet is attached to one side of the first mounting portion and the second mounting portion; A plurality of pins are arranged on a side of the first mounting portion away from the magnetic conductive cover sheet, and a plurality of pins are arranged on a side of the second mounting portion away from the magnetic conductive cover sheet, and a side of each pin away from the magnetic conductive cover sheet is in a planar shape; A carrier board having a plurality of pads corresponding one-to-one to the pins on the first mounting portion and the second mounting portion; Each of the pins is respectively attached to and fixedly connected to a corresponding pad.

2. A micro power module structure according to claim 1, characterized in that: The pins include a first pin, a second pin, a third pin and a fourth pin; The first mounting portion has a first mounting surface and a first mating surface parallel to each other, and the first mounting portion is configured with a first pin setting portion and a second pin setting portion protruding relative to the first mounting surface; the second mounting portion has a second mounting surface and a second mating surface parallel to each other, and the second mounting portion is configured with a third pin setting portion and a fourth pin setting portion protruding relative to the second mounting surface; The first pin, the second pin, the third pin and the fourth pin are respectively arranged on the first pin arrangement portion, the second pin arrangement portion, the third pin arrangement portion and the fourth pin arrangement portion; The first pin, the second pin, the third pin and the fourth pin have a plane shape at a side away from the magnetic conductive cover sheet.

3. A micro power module structure according to claim 2, characterized in that: One side of the magnetic cover sheet is respectively in contact with the first mating surface and the second mating surface, and the side of the magnetic cover sheet facing away from the winding column has a planar suction surface, and the sides of the first pin, the second pin, the third pin and the fourth pin facing away from the magnetic cover sheet are arranged parallel to the suction surface.

4. A micro power module structure according to claim 2, characterized in that: The conductive coil has four ends, which are respectively embedded in the first pin, the second pin, the third pin and the fourth pin, and the ends do not protrude from a side of the first pin, the second pin, the third pin and the fourth pin that is away from the magnetic cover sheet.

5. A micro power module structure according to claim 2, characterized in that: The first pin setting portion, the second pin setting portion, the third pin setting portion and the fourth pin setting portion are respectively constructed with a first pin setting groove, a second pin setting groove, a third pin setting groove and a fourth pin setting groove which are recessed toward one side of the winding column, and the first pin, the second pin, the third pin and the fourth pin are respectively arranged in the first pin setting groove, the second pin setting groove, the third pin setting groove and the fourth pin setting groove.

6. The micro power module structure according to claim 2, characterized in that: The projections of the pad, the first pin, the second pin, the third pin and the fourth pin on the same horizontal plane are substantially in a rectangular shape.

7. The micro power module structure according to claim 1, characterized in that: The material of the carrier board is the same as the packaging material of the micro power module.

8. The micro power module structure according to claim 2, characterized in that: A step opening is configured on one side of the first pin setting portion, the second pin setting portion, the third pin setting portion, and the fourth pin setting portion adjacent to the winding post.

9. A micro-power isolated power supply module, characterized in that: include: The micro power module structure as claimed in any one of claims 1 to 8.

10. A power module, characterized in that: include: The micro power module structure as claimed in any one of claims 1 to 8.

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