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Inductor structure and power supply circuit

A power supply circuit and inductance technology, which is applied in circuits, transformer/inductor cooling, transformer/inductor components, etc., can solve the problems of large inductance, slow branch perception, etc., and achieve fast transient response and heat dissipation Strong, Small Inductor Size Effect

Pending Publication Date: 2022-07-08
HEFEI SILERGY SEMICON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an inductance structure and a power supply circuit, which are used to solve the problems in the prior art that the inductance is large, and the sensing of each branch is slow when multiple channels are used side by side.

Method used

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  • Inductor structure and power supply circuit
  • Inductor structure and power supply circuit
  • Inductor structure and power supply circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] like figure 2 As shown, this embodiment provides an inductance structure 2, and the inductance structure 2 includes:

[0066] At least one magnetic core 21 and N groups of windings, each group of the windings includes a phase output coil 221 and an interphase coupling coil 222; wherein, N is a natural number greater than or equal to 2. In this embodiment, N is set to 2. In actual use, the value of N can be set as required.

[0067] like figure 2 As shown, the magnetic core 21 is used for winding coils.

[0068] Specifically, the magnetic core 21 is realized by using a magnetic powder core material. The magnetic powder core is a soft magnetic material formed by mixing and pressing ferromagnetic powder particles and an insulating medium, which itself has a much higher saturation magnetic flux density than ferrite. and lower thermal conductivity. As an example, the magnetic core 21 has a cubic structure.

[0069] It should be noted that, in actual use, the shape of th...

Embodiment 2

[0096] like Figure 8 As shown, this embodiment provides an inductance structure 2, which is different from the first embodiment in that the inductance structure 2 further includes a wire frame 25, and the phase output coil 221 and the interphase coupling coil 222 pass through the The wire rack 25 is used to fix the relative positions of the phase output coil 221 and the phase-to-phase coupling coil 222 to facilitate combined installation.

[0097] Specifically, in this embodiment, three sets of windings are taken as an example, and each set of windings is respectively located in the corresponding through hole. For the specific arrangement, please refer to Embodiment 1 and Embodiment 2, which will not be repeated here. Each group of windings is fixed in the wire frame 25 , and the relative position of each coil is determined based on each through hole. The wire frame 25 can realize the overall installation of each coil, which is convenient and quick.

[0098]More specifically...

Embodiment 3

[0102] like Figure 9 As shown, the present embodiment provides an inductor structure 2, which is different from the first and second embodiments in that the line width of the phase output coil 221 disposed outside the through hole is larger than the width of the through hole.

[0103] Specifically, in this embodiment, four sets of windings are taken as an example, and each set of windings is respectively located in the corresponding through hole. For the specific setting method, refer to the first embodiment, which will not be repeated here. The line width of each phase output coil 221 (first line segment) located inside the through hole is less than or equal to the width of the through hole. In this embodiment, the line width of each phase output coil 221 located inside the through hole is equal to the width of the through hole. The widths of the through holes are the same; the line width of each phase output coil 221 (the second line segment and / or the third line segment) l...

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Abstract

The invention provides an inductor structure and a power supply circuit, the inductor structure comprises at least one magnetic core and N groups of windings, and each group of windings comprises a phase output coil and an interphase coupling coil; each magnetic core is provided with a through hole, the phase output coils and the interphase coupling coils of one group of windings penetrate through the same through hole and are respectively wound on two sides of the through hole, at least one group of windings is wound on one magnetic core, the interphase coupling coils are positioned on the same side of the magnetic core, and the phase output coils and the interphase coupling coils are positioned on the same side of the magnetic core. All the phase output coils are located on the other side of the magnetic core, and the phase output coils and the interphase coupling coils are arranged in an insulating mode; wherein N is a natural number greater than or equal to 2. The magnetic core of the inductor structure is made of the magnetic powder core material, negative coupling among multiple inductors is achieved in an indirect coupling mode, and the inductor structure has the advantages of being high in transient response speed, small in inductor size, high in heat dissipation capacity and the like when applied to large currents.

Description

technical field [0001] The present invention relates to the technical field of semiconductors, in particular to an inductive structure and a power supply circuit. Background technique [0002] High-current multi-channel parallel connection has become the main structure of a Voltage Regulator Module (VRM) that supplies power to CPUs, servers, etc., and the inductors used in the voltage regulator modules are mostly multiple ferrite inductors used side by side. like figure 1 Shown is a single ferrite inductor 1 with a core 11 of ferrite material on which a coil 12 is wound. Due to its low magnetic core saturation magnetic flux density and low thermal conductivity, it cannot achieve a smaller design; and when multiple ferrite inductors are used side by side, when the load of one channel changes suddenly, the other channels will The perception is very slow and it is not easy to achieve current sharing between the branches. [0003] Therefore, how to reduce the volume of the in...

Claims

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Application Information

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IPC IPC(8): H01F27/255H01F27/08H01F27/28H01F27/30H01F27/32H02M3/158
CPCH01F27/255H01F27/08H01F27/306H01F27/324H01F27/28H02M3/1584Y02T10/70
Inventor 代克危建颜佳佳
Owner HEFEI SILERGY SEMICON TECH CO LTD
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