Methods for manufacturing integrated magnetic components and LED power supply

Patent metadata

Field	Value
Publication number	US-9978499-B2
Application number	US-201414421187-A
Country	US
Kind code	B2
Filing date	Nov 7, 2014
Priority date	Nov 7, 2013
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

The present disclosure provides an integrated magnetic component, a method for manufacturing the integrated magnetic component, and an integrated LED power supply including the magnetic component. The integrated magnetic component includes a PCB baseboard, wherein magnetic core, copper coils and pins are embedded in the baseboard. The magnetic core may be an iron or cobalt-based soft magnetic thin film(s), and it may be stuck or coated on the inner layer of the PCB baseboard. Further, the copper coil may be thin copper tracks. The present disclosure provides a method for making iron or cobalt-based nanocrystalline strip(s) using a soft magnetic thin film deposition method, or a melt spinning method. The iron or cobalt-based soft magnetic thin film(s) may then be used to make an embedded PCB magnetic core. The resulting magnetic component is thin, highly efficient, and functions as a substrate in the assembly process. In addition, the LED power supply consistent with the present disclosure is thin and small, highly integrated, with process repeatability and reliability. Embodiments consistent with the present disclosure thus simplify the system assembly process for making LED power supplies, and save time and cost in the process.

First claim

What is claimed is:

1. A method for manufacturing an integrated magnetic component on a PCB for an LED power supply circuit, comprising:
cutting a material of a PCB baseboard into a size of the integrated magnetic component;
generating iron or cobalt-based soft magnetic thin films using a soft magnetic thin film deposition method or a melt spinning method;
coating the soft magnetic thin films on the inner layer of the PCB baseboard to form a magnetic core;
formulating a pattern on the magnetic core, using either a dry etching or a wet etching method;
after formulating the pattern on the magnetic core, compressing multiple layers of the PCB baseboard;
drilling holes on the PCB baseboard to connect different layers;
inter-connecting an inner and outer PCB baseboard layer;
depositing a layer of copper on an inner side of the holes; and
plating and etching the PCB.

2. The method for manufacturing an integrated magnetic component for the LED power supply circuit according to claim 1 , further comprising:
assembling other components for the LED power supply circuit onto the integrated magnetic component using the integrated magnetic component as a substrate.

3. A method for manufacturing an integrated magnetic component on a PCB for an LED power supply circuit, comprising:
cutting a material of a PCB baseboard into a size of the integrated magnetic component, wherein the PCB baseboard is a multi-layer PCB baseboard including at least one inner layer;
generating iron or cobalt-based soft magnetic thin films using a soft magnetic thin film deposition method or a melt spinning method;
coating the soft magnetic thin films on the outer layer of the PCB baseboard to form a magnetic core, the magnetic core being directly coated on the inner layer of the multi-layer PCB baseboard;
formulating a pattern on the magnetic core, using either a dry etching or a wet etching method;
after formulating the pattern on the magnetic core, compressing multiple layers of the PCB baseboard;
drilling holes on the PCB baseboard to connect different layers of the multi-layer PCB baseboard;
inter-connecting the inner layer and at least one outer layer of the multi-layer PCB baseboard;
depositing a layer of copper on an inner side of the holes; and
plating and etching the PCB.

Assignees

• Zhejiang Shenghui Lighting Co
• Zhejiang Shenghui Lighting Co

Inventors

• Shen Jinxiang
• Wang Ningning

Classifications

• H05K3/30

  Assembling printed circuits with electric components, e.g. with resistors · CPC title

• H05K2201/083

  Magnetic materials · CPC title

• H01F1/15333

  containing nanocrystallites, e.g. obtained by annealing · CPC title

• G01R15/20

  using galvano-magnetic devices, e.g. Hall-effect devices {, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices} · CPC title

• H01F27/2804 Primary

  Printed windings · CPC title