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Switching power supply, emi filter, common mode inductor and its winding method

A technology of common-mode inductors and winding methods, which is applied in the directions of transformers/inductor coils/windings/connections, inductors, fixed inductors, etc., and can solve the problems that hinder the miniaturization, high-frequency, and suppression of common-mode inductors of switching power supplies EMI noise capability needs to be enhanced to achieve the effect of saving space occupation and production cost, good EMI suppression ability, and reducing production cost

Active Publication Date: 2018-01-30
DELTA ELECTRONICS JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ability of the common-mode inductor to suppress EMI noise still needs to be enhanced, which hinders the development of switching power supplies in the direction of miniaturization and high frequency

Method used

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  • Switching power supply, emi filter, common mode inductor and its winding method
  • Switching power supply, emi filter, common mode inductor and its winding method
  • Switching power supply, emi filter, common mode inductor and its winding method

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Embodiment Construction

[0045] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms, and should not be construed as being limited to the embodiments set forth herein; on the contrary, these embodiments are provided so that this disclosure will be comprehensive and complete, and fully convey the concept of the example embodiments To those skilled in the art. In the figure, the thickness of regions and layers are exaggerated for clarity. The same reference numerals in the figures indicate the same or similar structures, and thus their detailed descriptions will be omitted.

[0046] Furthermore, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to give a sufficient understanding of the embodiments of the present disclosure. However, those skilled in the art ...

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Abstract

The disclosure provides a switching power supply, an EMI filter, a common mode inductor and a winding method thereof. The common mode inductor includes a first coil winding and a second coil winding, and the winding method of the common mode inductor includes: setting two isolation barriers at different positions of a magnetic core; winding the first A coil is wound on the magnetic core, and the first coil winding is divided into two winding areas by one of the spacers; the second coil is wound on the magnetic core, and the second coil winding is wound on the magnetic core. Two winding areas are separated by another spacer therein, wherein the second coil winding is wound symmetrically with the first coil winding.

Description

Technical field [0001] The present disclosure relates to the technical field of electromagnetic interference suppression, in particular to a winding method of a common mode inductor, a common mode inductor prepared by the winding method of the common mode inductor, an EMI filter applying the common mode inductor, and Switching power supply. Background technique [0002] Switching power supply is a power supply that maintains a stable output voltage by controlling the time ratio of switching on and off. At present, switching power supply products are developing in the direction of miniaturization and high frequency, and this has also caused the EMI (Electro Magnetic Interference) noise of switching power supply products to be more and more difficult to improve. Common-mode inductors are one of the main components to suppress EMI noise in switching power supplies, and their own characteristics have a significant impact on EMI noise suppression. [0003] Such as figure 1 Shown in is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/30H01F41/064
CPCH03H2001/0092H02M1/126H01F3/10H01F17/062H01F27/2895H01F27/324H01F41/08H01F2003/106H01F27/245H03H7/427Y10T29/49073H02M1/123H01F38/14H01F27/28
Inventor 程堂前
Owner DELTA ELECTRONICS JIANGSU
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