Ceramic planar transformer and power supply module

By setting multiple coil components on the dielectric assembly of the ceramic plane transformer and filling the air gap slurry, the problems of large leakage inductance and low coupling coefficient of the ceramic plane transformer are solved, and a higher flux coupling efficiency is achieved.

CN119724873AActive Publication Date: 2025-03-28FENGHUA RES INST GUANGZHOU CO LTD
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Patent Information

Application Number
CN202411973679.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-03-28
Estimated Expiration
2044-12-30

AI Technical Summary

Technical Problem

Existing ceramic plane transformers have problems with large leakage inductance and low coupling coefficients between the primary and secondary windings.

Method used

By providing a coil assembly on the dielectric assembly of the ceramic plane transformer, the coil assembly includes at least one primary winding and at least two secondary windings, the air gap slurry is filled between the coil assembly, and the relative magnetic permeability of the dielectric assembly is higher than the relative magnetic permeability of the air gap slurry, to prevent magnetic flux autocoupling and improve the coupling coefficient.

Benefits of technology

It effectively reduces the leakage inductance of the ceramic plane transformer, improves the coupling coefficient between the primary winding and the secondary winding, and enhances the coupling efficiency of magnetic flux.

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Abstract

The embodiment of the invention provides a ceramic planar transformer and a power supply module. The ceramic planar transformer comprises a dielectric component; the coil assembly is arranged on the medium assembly, and the coil assembly comprises a primary winding and at least two secondary windings; the at least two secondary windings are arranged on two sides of the primary winding; air gap slurry is filled between the primary winding and the secondary winding; the relative permeability of the medium assembly is higher than the relative permeability of the air gap slurry. According to the ceramic planar transformer, the gaps between the coils are filled with the air gap slurry, the relative permeability of the medium assembly is higher than that of the air gap slurry, and the air gap slurry can prevent self-coupling of magnetic flux in the coil assembly to a certain extent, so that the magnetic flux of the primary winding is forced to penetrate through the secondary winding as much as possible; therefore, the coupling coefficient of the primary winding and the secondary winding is improved.
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