Wiring board, electronic device, and power supply unit

A technology for wiring substrates and electronic components, applied to printed circuit components, metal pattern materials, etc., can solve problems such as structural changes of electronic equipment, difficulty in suppressing effects, and increased costs, and achieve easy assembly, low cost, and radiation suppression noise effect

Inactive Publication Date: 2007-01-10
ORMON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Such radiation noise suppression technology is not limited to the wiring part which is the noise source, but is obtained by covering the surface of the substrate with a ferrite layer, so it can be widely used in an extremely wide area spanning electronic parts and wiring. , the radiation noise is suppressed in a wide range, and becomes such a suppression that suppresses the noise when the imaginary part μ" of the magnetic permeability representing the loss component of the noise suppressor is a high value, that is, 100 MHz to several GHz. The suppression effect is difficult, and to solve this problem often induces other new problems such as an increase in cost due to an increase in shutters or electronic components, and structural changes in electronic equipment.

Method used

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  • Wiring board, electronic device, and power supply unit
  • Wiring board, electronic device, and power supply unit
  • Wiring board, electronic device, and power supply unit

Examples

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Embodiment Construction

[0050] Hereinafter, a wiring board according to an embodiment of the present invention and a switching power supply, which is an example of an electronic device (power supply unit) equipped with the wiring board, will be described in detail with reference to the drawings.

[0051] refer to Figure 1 to Figure 3 A wiring board according to an embodiment of the present invention and a switching power supply equipped with it will be described. Electronic equipment equipped with such a switching power supply is strictly controlled for electromagnetic failure in the range of, for example, 30 MHz to 1 GHz.

[0052] figure 1 is a schematic diagram showing the wiring board and electronic components mounted thereon. In this figure, the wiring board is constituted by a lead frame 10 corresponding to the electronic component mounting pattern of the switching power supply.

[0053] Mounted electronic components constituting a power supply are connected and fixed to the lead frame 10 ind...

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PUM

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Abstract

The present invention relates to a wiring board, electronic device, and power supply unit. A wiring board (lead frame) 10 has a configuration in which a high-frequency current suppression member 18 formed of a conductive soft magnetic film 18a having high magnetic permeability is provided in a near field (magnetic field dominant area) in a lead frame part (wiring part) 10a which can be a radiation noise source, preferably, in the periphery of the lead frame part 10a.

Description

[0001] technology area [0002] The present invention relates to a power supply device such as a wiring board, electronic equipment, and a switching power supply, and can suppress radiation noise generated by wiring. [0003] This electronic equipment includes all electronic equipment that produces high-frequency radiated noise. [0004] The power supply device is typically a switching power supply, including AC / DC converters, DC / AC converters, inverters (inverters), uninterruptible power supplies (UPS), and other power supply devices including power conversion units. Background technique [0005] In electronic devices that operate at high frequencies, radiation noise increases as processing speeds increase, and there is a growing need for technology development to more effectively suppress electromagnetic failures that occur. [0006] In particular, due to the extreme increase in the popularity of electronic equipment at home and abroad in recent years, the erroneous operati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/02H05K1/09
Inventor 山本真吾石桥广行松田克
Owner ORMON CORP
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