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Microminiature power converter with multiple output

A power conversion device, ultra-small technology, applied in the direction of output power conversion device, DC power input conversion to DC power output, adjustment of electrical variables, etc., can solve the problems of small size, increased installation area, and increased installation cost

Active Publication Date: 2004-09-22
FUJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the above-mentioned ultra-small power conversion device has the characteristics of small size and thinness. It is composed of a magnetic induction element and an IC, and it is centered on a single output with one input system and one output system. In order to obtain multiple outputs Requires multiple ultra-small power conversion devices
[0012] In electronic equipment such as portable devices that require ultra-small power conversion devices, multi-output systems are required, that is, devices requiring multiple output voltages increase, and multiple ultra-small power conversion devices are required, and the installation area occupied by ultra-small power conversion devices increases. , the installation cost increases

Method used

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  • Microminiature power converter with multiple output
  • Microminiature power converter with multiple output
  • Microminiature power converter with multiple output

Examples

Experimental program
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Embodiment 1

[0059] Fig. 1 and Fig. 2 are main part configuration diagrams of the multi-output ultra-small power conversion device according to Embodiment 1 of the present invention. Fig. 1 is a plan view of main parts when viewed from the upper part of an inductor composed of a thin-film magnetic induction element, and Fig. 2 (a) is a sectional view of main parts taken along line X-X in FIG. 1 , and FIG. 2( b ) is a sectional view of main parts taken along line Y-Y in FIG. 1 . In this example, the number of inductors is two. In these figures, not only the coil pattern of the inductor but also the connection terminals 15a, 15b constituted by the mounting terminals of the inductor for electrical connection are shown.

[0060] In FIG. 1 , coil conductors 12 a and 13 a are formed on a first main surface of a magnetic insulating substrate 11 , and coil conductors 12 b and 13 b are formed on a second main surface. The planar shape of the coil conductors 12b and 13b formed on the second main su...

Embodiment 2

[0084] FIG. 14 shows a method of manufacturing a multi-output ultra-small power conversion device according to Embodiment 2 of the present invention, and FIGS. 14( a ) to 14 ( c ) are cross-sectional views of main steps showing the sequence of steps. Here, a method of manufacturing a ferrite substrate is shown.

[0085] In Example 1, a resin was used as a material of the magnetic separation layer 17, but in this Example, a ceramic material was used. In the above-mentioned case of using the resin, the method is adopted to form the slit 41 in the ferrite substrate 11 in the process after the ferrite substrate 11 is sintered, and fill the slit 41 with the resin. In this embodiment, it is formed by simultaneously sintering ferrite and ceramics.

[0086] First, as shown in FIG. 14( a ), a printed circuit board 51 before ferrite sintering is formed.

[0087] Next, as shown in FIG. 14(b), a cutout 52 and through holes 53, 54 are formed in a printed circuit board 51 by a punching me...

Embodiment 3

[0094] Fig. 16 is a main part configuration diagram of a multi-output ultra-small power conversion device according to Embodiment 3 of the present invention. Fig. 16(a) is a plan view of main parts of the first inductor, and Fig. 16(b) is a main part plan view of the second inductor. Partial floor plan. These figures are plan views of main parts seen from the top of the inductor composed of a thin-film magnetic induction element.

[0095] Respectively, the plan view of the first inductor 60a in which the first coil conductors 62a, 62b and the first connection terminals 65a, 65b are formed on the first magnetic insulating substrate (hereinafter referred to as the first substrate 61a), and the first inductor 60a formed on the second magnetic insulating substrate A plan view of a second inductor 60b in which second coil conductors 63a, 63b and second connection terminals 66a, 66b are formed on a substrate (hereinafter referred to as a second substrate 61b). Also, 62a, 63a, 65a, ...

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Abstract

A micro power converter with multiple outputs includes a semiconductor substrate with a semiconductor integrated circuit formed thereon, a thin film magnetic induction unit, and a capacitor. The thin film magnetic induction unit is formed of a plurality of thin film magnetic induction components formed on magnetic insulation substrates, and a magnetic isolation layer is provided for magnetically isolating the thin film magnetic induction components with each other.

Description

technical field [0001] The present invention relates to an ultra-small power conversion device with multiple outputs, such as a DC-DC converter formed of a semiconductor integrated circuit (hereinafter referred to as IC) formed on a semiconductor substrate, and passive components such as coils, capacitors, and resistors. . Background technique [0002] In recent years, electronic information equipment, especially portable various electronic information equipment has been widely popularized. Most of these electronic information devices use batteries as power sources and have built-in power conversion devices such as DC-DC converters. A general power conversion device is configured by arranging active elements such as switching elements, rectifying elements, and control ICs, and passive elements such as coils, transformers, capacitors, and resistors, on a printed circuit board such as a ceramic substrate or plastic. hybrid components. [0003] Fig. 32 is a circuit configura...

Claims

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Application Information

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IPC IPC(8): H01F37/00H01F27/24H01F27/28H01L21/60H01L23/522H01L25/00H02M3/00H02M3/155
CPCH01L2924/13091H01L2924/19106H01F27/2804H02M3/00H01L24/81H01L2224/81205H01L2924/01012H01L2924/01068H01L2924/19015H01F27/24H01L2224/81801H01L23/5227H01L2924/12042H01L2924/14H02M3/003H01L2924/00
Inventor 江户雅晴西尾春彦
Owner FUJI ELECTRIC CO LTD
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