Common mode inductors, switching power supplies, inverters, and communication devices
By adopting a common-mode inductor with a U-shaped magnetic core and vertically wound enameled flat copper wire, the problem of poor high-frequency interference suppression in traditional common-mode inductors under high-frequency scenarios is solved, achieving improved high-frequency performance and structural stability, and making it suitable for switching power supplies, inverters and communication equipment.
CN122291260APending Publication Date: 2026-06-26SHENZHEN ZHENHUA FU ELECTRONICS
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN ZHENHUA FU ELECTRONICS
- Filing Date
- 2026-04-14
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
Traditional common-mode inductors have poor high-frequency interference suppression performance in high-frequency scenarios, and are large in size and expensive, making it difficult to meet the application requirements of high-frequency, high-power-density devices.
Method used
It adopts a U-shaped magnetic core and enameled flat copper wire winding, which is wound vertically and combined with the fixing structure of PCB board or base. The gaps are filled with potting glue to form a stable inductor structure.
Benefits of technology
It improves high-frequency performance, reduces eddy current losses and proximity effects, and ensures the mechanical stability and electrical performance of the inductor, making it suitable for high-frequency, high-power-density equipment.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122291260A_ABST
Abstract
This application provides a common-mode inductor, a switching power supply, an inverter, and communication equipment. The common-mode inductor includes a U-shaped magnetic core, an enameled flat copper wire winding, and a fixing structure. The enameled flat copper wire winding is wound vertically on the U-shaped magnetic core. This vertical winding method allows the enameled flat copper wire to be wound perpendicular to the plane of the U-shaped magnetic core. This winding method can improve the filling rate of the winding, reduce the space occupied by the winding, and also help reduce eddy current losses and proximity effects at high frequencies, thus improving the high-frequency performance of the inductor. The enameled flat copper wire has good conductivity and insulation properties, which can meet the operating requirements of the inductor under high current and high voltage environments. The fixing structure is used to fix the U-shaped magnetic core and the enameled flat copper wire winding, ensuring the stability of the winding's position on the U-shaped magnetic core and preventing loosening or displacement of the winding during inductor operation, thereby ensuring the electrical performance and mechanical stability of the inductor.
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