Ultrathin transformer structure

Abstract

The utility model relates to an ultrathin transformer structure. The height of an existing transformer in the market is generally larger than 3.5 mm, limitation exists in back-end application of a DC-DC circuit, and the problems that the anti-electricity capacity is insufficient, and the number of output sets is insufficient exist. According to the ultrathin transformer, the horizontally-installed SMT framework is adopted, the winding PIN and the welding PIN are separated, 3-4 windings can be supported, and the ultrathin transformer is matched with the ultrathin magnetic core to form an ultrathin structure. The framework structure is stable in supporting, the top is flat, machine pasting is facilitated, the number of pins is large, and multi-winding output selection can be achieved. Moreover, the height of the transformer is less than 3.5 mm, the transformer can be used for a DC-DC rear-end circuit, such as an MCU (Microprogrammed Control Unit) and other low-current and multi-voltage application scenes, the anti-electricity capability can be more than 1000V, the defects in the prior art are effectively overcome, and the transformer has good application value in the field of electronic equipment.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to an ultra-thin transformer structure. Background Technology

[0002] As electronic devices continue to evolve towards miniaturization and integration, transformers, as key components in electronic circuits, significantly impact the design and application of the entire circuit system through their performance and size. Currently, transformers on the market suffer from several shortcomings; in terms of height, they are generally greater than 3.5mm. This dimensional defect significantly limits their application in the back-end of DC-DC circuits.

[0003] From an application perspective, low-current, multi-voltage applications such as MCUs place extremely high demands on circuit board space layout. The excessive height of traditional transformers occupies too much circuit board space, hindering high-density circuit integration and limiting the miniaturization of electronic devices.

[0004] In terms of performance, some transformers lack sufficient dielectric strength, failing to meet the demands of applications with high electrical safety requirements. This makes them prone to electrical faults, affecting equipment stability and lifespan. Simultaneously, some transformers have insufficient output groups, making it difficult to meet the diverse voltage requirements of complex circuits. This increases circuit design complexity and cost, necessitating additional circuit components to achieve multi-voltage output functionality and reducing overall circuit reliability. These issues urgently need to be addressed to drive the further development of electronic equipment. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an ultra-thin transformer structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An ultra-thin transformer structure includes a horizontally mounted SMT frame and an ultra-thin magnetic core. The SMT frame has independent winding pins and soldering pins. The SMT frame has a winding support position inside. The ultra-thin magnetic core and the SMT frame cooperate to form a closed magnetic circuit. The overall height is ≤3.5mm.

[0008] Preferably, the SMT skeleton has a flat surface mount positioning surface on the top and support columns on the bottom.

[0009] Preferably, the SMT frame has at least two independent winding areas, each winding area corresponding to a set of output pins.

[0010] Furthermore, the wire winding pin and the soldering pin are set separately.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. The ultra-thin transformer provided by this utility model adopts a structure that combines a horizontal SMT frame with an ultra-thin magnetic core. The frame winding pins and soldering pins are separated, and it can support 3-4 windings. Its frame structure is stable, the top is flat for easy machine mounting, and the large number of pins can meet the output requirements of multiple windings. With a height of less than 3.5mm, it breaks through the height limitation of traditional transformers and can be widely used in DC-DC back-end circuits, such as MCUs and other low-current, multi-voltage scenarios. It solves the shortcomings of existing transformers in terms of size, number of output groups, and dielectric strength, and has good application prospects.

[0013] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the skeleton structure of an ultra-thin transformer structure proposed in this utility model;

[0015] Fig. 2 This is a schematic diagram of the magnetic core structure of an ultra-thin transformer structure proposed in this utility model.

[0016] Fig. 3 This is a schematic diagram of the finished product of an ultra-thin transformer structure proposed in this utility model.

[0017] In the diagram: 1. SMT frame; 2. Ultra-thin magnetic core; 11. Wire winding pin; 12. Soldering pin; 13. Surface mount positioning surface; 14. Support post; 15. Winding area. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0019] The ultra-thin transformer structure provided by this utility model is as follows: Figs. 1-3 As shown, it specifically includes the following components:

[0020] The SMT frame 1 and the ultra-thin magnetic core 2 are mounted horizontally. The SMT frame 1 is equipped with independent winding PIN11 and soldering PIN12. The SMT frame 1 has 3-4 winding support positions inside. The ultra-thin magnetic core 2 and the SMT frame 1 cooperate to form a closed magnetic circuit. The overall height is ≤3.5mm.

[0021] Specifically, the SMT frame 1 has a flat surface mount positioning surface 13 on the top and a support column 14 on the bottom. The SMT frame 1 has at least two independent winding areas 15, each winding area 15 corresponds to a set of output pins, and the winding PIN11 and soldering PIN12 are set separately.

[0022] The working principle of this ultra-thin transformer is based on the law of electromagnetic induction. When the transformer is running, current flows through the primary winding wound on the SMT bobbin, and the alternating current in the primary winding generates an alternating magnetic field. Due to the excellent magnetic permeability of the ultra-thin magnetic core that mates with the bobbin, the alternating magnetic field is concentrated in the closed magnetic circuit formed by the core.

[0023] According to the law of electromagnetic induction, a changing magnetic field will induce an electromotive force in the secondary winding. This transformer's SMT frame has 3-4 winding support positions, enabling multi-winding output. The turns ratio of different windings determines the output voltage. By rationally designing the turns ratio of the primary and secondary windings, different output voltages can be obtained to meet the needs of low-current, multi-voltage applications such as MCUs.

[0024] The separate design of the winding pin and the soldering pin makes the primary winding and the secondary winding relatively independent in electrical connection, which enhances the transformer's resistance to electrical current, ensures stable operation in electrical environments above 1000V, reduces the risk of electrical faults, and ensures the safe and reliable operation of the entire circuit system.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An ultra-thin transformer structure, characterized in that: It includes a horizontally mounted SMT frame (1) and an ultra-thin magnetic core (2). The SMT frame (1) is provided with independent winding pins (11) and soldering pins (12). The SMT frame (1) has 3-4 winding support positions inside. The ultra-thin magnetic core (2) cooperates with the SMT frame (1) to form a closed magnetic circuit. The overall height is ≤3.5mm.

2. The ultra-thin transformer structure according to claim 1, characterized in that: The SMT skeleton (1) has a flat surface mounting positioning surface (13) on the top and a support column (14) on the bottom.

3. The ultra-thin transformer structure according to claim 1, characterized in that: The SMT frame (1) has at least two independent winding regions (15), and each winding region (15) corresponds to a set of output pins.

4. The ultra-thin transformer structure according to claim 1, characterized in that: The winding PIN (11) and the welding PIN (12) are set separately.

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