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Buried magnetic core circuit board and manufacturing method thereof

A manufacturing method and circuit board technology, which are applied in the direction of assembling printed circuits with electrical components, printed circuits connected with non-printed electrical components, etc. problems such as defective points, to achieve the effect of being conducive to miniaturization and high densification, saving area, and eliminating welding problems

Active Publication Date: 2019-09-06
东莞市五株电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the inductors of the power supply part of the PCB need to be mounted manually, the production efficiency is low, and there are risks such as poor solder joints
In addition, the inductance element occupies more than 40% of the surface area of ​​the power board, which is not conducive to the miniaturization and high density of product design

Method used

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  • Buried magnetic core circuit board and manufacturing method thereof
  • Buried magnetic core circuit board and manufacturing method thereof

Examples

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] see figure 1 , is a structural schematic diagram of the embedded magnetic core circuit board of the present invention. The embedded magnetic core circuit board 10 provided by the present invention includes a PCB main board 1 , an embedding groove 2 recessed into the PCB main board 1 , and a magnetic core 3 placed in the embedding groove 2 .

[0027] The PCB main board 1 includes a multi-layer copper plating layer 11 stacked sequentially from the bottom to the top surface and a PP layer 12 sandwiched between two adjacent layers of the copper plating layer 11 for forming the copper plating layer 11. Insulation between layers 11. The copper plating layer 11 includes a conductive through hole 111 penetrating through it and plated with copper inside, for realizing the communication between the copper plating layers 11 . The copper plating layer 11 ...

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Abstract

The invention discloses a circuit board with an embedded magnetic core. The circuit board comprises a PCB main board, an embedding groove which is concave towards the interior of the PCB main board and the magnetic core which is placed in the embedding groove, wherein the PCB main board comprises multiple copper-plated layers which are laminated from the bottom surface to the top surface in sequence, and PP layers which are arranged between the adjacent two copper-plated layers; the copper-plated layers comprise conductive through holes which penetrate through the copper-plated layers; the number of the copper-plated layers is greater than eight; the copper thickness of each layer of the first to sixth copper-plated layers is 0.105mm; the magnetic core is embedded in the first to eighth layers of the PCB main board; and the top surface of the magnetic core is flush with the top surface of the PCB main board, and the magnetic core is fully exposed out of the PCB main board. Compared with the related technologies, the circuit board with the embedded magnetic core is stable in performance, and suitable for miniaturization and high density of product design. The invention also provides a manufacturing method for the circuit board with the embedded magnetic core.

Description

technical field [0001] The invention relates to a circuit board, in particular to a magnetic core embedded circuit board and a manufacturing method thereof. Background technique [0002] As the Printed Circuit Board (PCB) industry, also known as the circuit board, enters the system-on-package (SOP) stage, PCB passive device buried technology has also become a hot research topic today. In the adjustment and development of automation progress, PCB is one of the key technologies, and all control systems need PCB as a carrier to realize electrical signal processing. [0003] In related technologies, inductance is widely used in circuit board design. The physical meaning of the inductance through DC and AC resistance is to use the conductive coil to store the energy of the alternating magnetic field. The main function in the circuit is to provide inductive impedance. When cooperating with other related components Complete the corresponding matching, filtering, oscillation and ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/18H05K3/32
Inventor 孟昭光
Owner 东莞市五株电子科技有限公司
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