Transformer and inductor integrated devices, switching power supplies and power supply equipment

By integrating the transformer and inductor together, sharing the magnetic core and side posts, and making the winding magnetic field directions opposite, the problem of large area occupied by inductors and transformers is solved, and high power density and low loss of switching power supply are achieved.

CN224287971UActive Publication Date: 2026-05-26HUAWEI TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Filing Date
2025-03-24
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In existing technologies, inductors and transformers occupy a large area of ​​printed circuit boards, resulting in insufficient power density in switching power supplies.

Method used

The transformer and inductor are integrated together, sharing a magnetic core and side posts. The magnetic fields of the transformer winding and the inductor winding are opposite in direction to reduce magnetic flux and core loss, thus optimizing the core structure.

Benefits of technology

This reduces the footprint and volume of transformers and inductors, increases the power density of switching power supplies, and reduces core losses and manufacturing costs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224287971U_ABST
    Figure CN224287971U_ABST
Patent Text Reader

Abstract

This disclosure provides an integrated transformer and inductor device, a switching power supply, and power supply equipment, belonging to the field of power electronics technology. The integrated transformer and inductor device includes a magnetic core, a transformer winding, and an inductor winding. The magnetic core includes a base plate, a top plate, a transformer center column, an inductor center column, and a first side column. The transformer center column, the first side column, and the inductor center column are arranged sequentially. The transformer winding is wound around the transformer center column, and the inductor winding is wound around the inductor center column. The direction of the magnetic field generated by the transformer winding at the first side column is opposite to the direction of the magnetic field generated by the inductor winding at the first side column. This causes the magnetic flux generated by the transformer winding at the first side column to cancel out the magnetic flux generated by the inductor winding at the first side column, resulting in a smaller magnetic flux at the first side column and reducing the likelihood of magnetic saturation. This reduces the cross-sectional area of ​​the first side column, thereby further reducing the size of the integrated transformer and inductor device.
Need to check novelty before this filing date? Find Prior Art