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Planar transformer

A planar transformer and planar technology, applied in the direction of transformer/inductor core, transformer/inductor coil/winding/connection, preventing/reducing unwanted electric/magnetic influence, etc., can solve problems such as magnetic flux leakage, Improve performance, increase cross-sectional area, and reduce leakage inductance

Pending Publication Date: 2022-08-05
BEIJING NAURA MICROELECTRONICS EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present application is to provide a planar transformer, which can solve the problem that current PCB planar transformers are prone to magnetic flux leakage

Method used

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0021] The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish ...

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Abstract

The invention discloses a planar transformer, and relates to the field of electrical elements. The planar transformer comprises a first PCB, a second PCB and a planar magnetic core, wherein the first PCB and the second PCB are stacked, and the planar magnetic core is used for fixing the first PCB and the second PCB. The first PCB and the second PCB respectively comprise a plurality of circuit layers, each circuit layer is provided with a winding, the winding is a primary winding or a secondary winding, in all the circuit layers, the circuit layers provided with the primary windings and the circuit layers provided with the secondary windings are alternately arranged, and the circuit layers provided with the primary windings and the circuit layers provided with the secondary windings are alternately arranged. And the windings of all the circuit layers are combined in series and in parallel to form a primary coil and a secondary coil of the planar transformer. The PCB planar transformer at least can solve the problem that a current PCB planar transformer is prone to a magnetic leakage phenomenon.

Description

technical field [0001] The application belongs to the technical field of electrical components, and in particular relates to a planar transformer. Background technique [0002] Radio frequency short-wave band transmitter equipment is constantly developing in the direction of small size, high power density and high efficiency. As one of the key components, the transformer has become smaller, lighter, and its performance has been greatly improved. Compared with traditional winding transformers, PCB planar transformers have higher current density, lower leakage inductance, smaller volume, wider operating frequency and temperature range, and enhanced ability to suppress radio frequency interference. PCB planar transformers have been widely used in communications, computers, automotive electronics, digital cameras, digital TVs, semiconductors and other fields, and will also be expanded in defense, aviation, aerospace and other fields that require high weight, volume and performa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F27/24H01F27/30H01F27/34
CPCH01F27/2804H01F27/34H01F27/346H01F27/24H01F27/306H01F2027/2809H01F2027/2819
Inventor 张龙晓
Owner BEIJING NAURA MICROELECTRONICS EQUIP CO LTD
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