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Matrix transformer and power supply using same

A transformer and matrix technology, which is applied in the field of transformers, can solve the problems of long wiring and unassisted magnetic field coupling of matrix transformers, and achieve the effect of high magnetic field coupling, good consistency, and reduced quantity

Active Publication Date: 2021-10-19
北京泰力控科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing matrix transformer scheme, in order to ensure the correct magnetic flux coupling direction, the primary winding needs to be wound on each secondary magnetic column, the wiring is lengthy, and the secondary winding is blocked. Open additional vias or buried holes on the board to connect the secondary winding taps protruding from the core structure
Moreover, the wiring of the primary winding exposed outside the magnetic core structure is only to achieve the correct winding direction, which does not help to improve the magnetic field coupling of the matrix transformer. Even, the extra wiring of the primary winding and the extra via hole or buried hole connection also brings additional conduction loss to the matrix transformer

Method used

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  • Matrix transformer and power supply using same
  • Matrix transformer and power supply using same
  • Matrix transformer and power supply using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A matrix transformer such as Figure 8 As shown, the magnetic core 100 is included, and the outer structure of the magnetic core 100 is EI type. The magnetic core 100 includes a rounded rectangular base 101, a primary magnetic column 104 arranged in the middle of the base 101, and a primary magnetic column arranged on the primary side. A plurality of secondary magnetic pillars 102 on the peripheral side of 104 , and a plate 103 covering the primary magnetic pillars 104 and the secondary magnetic pillars 102 . The base 101 can also be in other shapes such as a circle. The primary magnetic column 104 can be in the shape of a cuboid or a cylinder with an elliptical horizontal section. The secondary magnetic column 102 can be in the shape of a cylinder or a rectangle. The secondary magnetic column 102 may be located at the corner of the base 101 to facilitate reducing the volume of the matrix transformer, or may not be located at the corner of the base 101 . The number of ...

Embodiment 2

[0074] A matrix transformer such as Figure 16 and Figure 17 As shown, the difference from the first embodiment is that the side of the base 101 is provided with a plurality of sub-seats 105 extending outward, and the sub-seats 105 are evenly distributed around the base 101 . The primary side magnetic column 104 is arranged on the base 101 , the secondary side magnetic column 102 is arranged on the sub-seat 105 , and the secondary side magnetic columns 102 are evenly distributed around the primary side magnetic column 104 . The primary magnetic column 104 can be in the shape of a cylinder, a column with a waist-circular cross section, etc. The primary winding 300 is wound on the primary magnetic column 104 , and the secondary winding 200 is wound on the secondary magnetic column 102 . The plate 103 covers the base 101, the sub-seat 105, the primary side magnetic column 104 and the secondary side magnetic column 102, wherein the shape of the plate 103 can be the same as the c...

Embodiment 3

[0076] A power supply, the circuit of the power supply is connected with any matrix transformer described in the above-mentioned embodiments.

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Abstract

The invention discloses a matrix transformer and a power supply using the same. The matrix transformer comprises a magnetic core, a primary side winding and a secondary side winding, wherein the magnetic core comprises a base, a primary side magnetic column and a plurality of secondary side magnetic columns arranged on the base, and a flat plate covering the primary side magnetic column and the secondary side magnetic columns; the plurality of secondary side magnetic columns are symmetrically distributed on the peripheral side of the primary side magnetic column, a shortest distance is formed between each secondary side magnetic column and the primary side magnetic column, and a discrete value among the plurality of shortest distances is smaller than or equal to a preset standard discrete value; and the primary side winding is wound on the primary side magnetic column, the secondary side winding is wound on the secondary side magnetic columns, and the primary side magnetic column and the primary side winding are both located in a mutual inductance area formed by the secondary side magnetic columns and the secondary side winding based on mutual inductance. The matrix transformer has the advantages of high magnetic field coupling degree, good consistency and low conduction loss.

Description

technical field [0001] The present invention relates to a transformer, more specifically, it relates to a matrix transformer and a power supply using the matrix transformer. Background technique [0002] At present, matrix transformers are used in high power density power supplies to reduce the winding impedance and leakage inductance of the transformers, and the matrix transformers are reduced in size due to their matrix and high-frequency designs, and the coupling between windings The degree can be increased, and the winding conduction loss can be reduced, which is conducive to improving the power density of the power supply. [0003] LLC topology circuit with matrix transformer is a relatively common power solution in application scenarios such as server power supply and data center power supply. Application scenarios such as server power supply and data center power supply usually require low-voltage and high-current output power supplies, and the requirement of high cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/30H01F27/24
CPCH01F27/306H01F27/24
Inventor 王文博
Owner 北京泰力控科技有限公司