Switch power supply filter transformer and manufacture method thereof
A technology of switching power supply and manufacturing method, which is applied in the direction of inductance/transformer/magnet manufacturing, transformer/inductor core, transformer/inductor coil/winding/connection, etc., which can solve the problem of transformer and filter separation and reduce the The effect of production cost, skeleton cost reduction and mold cost reduction
Active Publication Date: 2018-05-04
SICHUAN CHANGHONG ELECTRONICS PARTS
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- Application Information
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is: to provide a switching power supply filter transformer and its manufacturing method, to solve the problem of separation of transformer and filter in current switching power supply and manufacturing cost
Method used
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Embodiment
[0052] The present invention will be further described below by taking the single-ended flyback switching power supply as an example.
[0053] 1. First determine the power volume of the magnetic core according to the power capacity of the transformer, because the electric parameter design is carried out with the idea of a large Ae value, and the magnetic core structure in the form of EEU with good heat dissipation is designed, and finally the central column area and window of the magnetic core 1 are determined. All parameters such as size. Magnetic core 1 is made of PC44 material with low power consumption, and the structure of magnetic core 1 is as follows: Figure 12 shown.
[0054] 2. According to customer specifications: single-ended flyback switching power supply, operating frequency 65KHZ, input voltage 110VAC / 220VAC, output 36VDC / 2.0A. After calculation, various parameters of the sample switching power supply filter transformer are as follows:
[0055] Primary wi...
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Abstract
The invention relates to the field of switch power supplies, discloses a switch power supply filter transformer and a manufacture method thereof, and solves the problems that transformers and filtersin current switch power supplies are separated, and production cost is high. The switch power supply filter transformer comprises a covered wire framework and a magnetic core, the framework is an integrated wire covering framework, the integrated wire covering framework can be disassembled into a framework A and a framework B which are separate, a primary winding and a secondary winding are woundon the framework A, a filter winding is wound on the framework B, the magnetic core comprises a body and an extending portion, the extending portion extends from the body, the body is mounted in the framework A, and the extending port is mounted in the framework B. The switch power supply filter transformer is applicable to the switch power supplies.
Description
technical field [0001] The invention relates to the field of switching power supplies, in particular to a switching power supply filter transformer and a manufacturing method thereof. Background technique [0002] With the rapid development of switching power supply technology, the design and manufacture of magnetic core devices are becoming more and more complicated and miniaturized. Providing high-quality and low-cost magnetic core devices will be the eternal theme of the future development of this industry. Today's switching power supply transformer (function: safety isolation, power transmission and conversion, current and voltage changes, etc.) and output current filter (function: output DC current ripple smoothing filter) are two different functions on the switching power supply that are used independently. magnetic core devices. At present, it is urgent to seek to design and manufacture a new magnetic core device that not only has the functional characteristics of th...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01F27/26H01F27/28H01F27/29H01F27/30H01F27/38H01F41/00
Inventor 林军邬迪思王庆东徐富
Owner SICHUAN CHANGHONG ELECTRONICS PARTS