EP4654232A1

EP4654232A1 - Magnetic assembly

Info

Publication number: EP4654232A1
Application number: EP24883601.7A
Authority: EP
Inventors: Chun-Wei Wu; Hung-Chuan Lin
Original assignee: Delta Electronics Inc
Current assignee: Delta Electronics Inc
Priority date: 2024-04-09
Filing date: 2024-09-02
Publication date: 2025-11-26
Also published as: TWI892823B; WO2025213695A1; CN120784089A; CN223006644U; TW202541061A

Abstract

A magnetic component is provided. The magnetic component includes a substrate, a magnetic core, at least one first winding and at least one second winding. The magnetic core is disposed on the substrate and includes a first magnetic part and a second magnetic part. The first magnetic part and the second magnetic part are disposed on two opposite sides of the magnetic core. The at least one first winding is disposed around the first magnetic part of the magnetic core in a clockwise direction and includes a first input terminal and a first output terminal. The first input terminal and the first output terminal are inserted into the substrate. The at least one second winding is disposed around the second magnetic part of the magnetic core in a counterclockwise direction and includes a second input terminal and a second output terminal. The second input terminal and the second output terminal are inserted into the substrate.

Description

FIELD OF THE INVENTION

The present disclosure relates to magnetic component, and more particularly to a magnetic component comprising windings disposed around different magnetic parts.

BACKGROUND OF THE INVENTION

The magnetic component includes a magnetic core and a plurality of windings. The plurality of windings are disposed around same magnetic part of the magnetic core. Each winding includes an input terminal and an output terminal. The currents of the plurality of windings are different, so that each winding of the conventional magnetic component cannot contact with another winding. Consequently, a required distance between each winding and another winding of the conventional magnetic component is increased, so that the overall size of the magnetic component is increased and the inductance of the magnetic component is reduced.
Therefore, there is a need of providing a magnetic component to obviate the drawbacks encountered from the prior arts.

SUMMARY OF THE INVENTION

The present disclosure provides a magnetic component. The first winding of the magnetic component of the present disclosure is disposed around the first magnetic part of the magnetic core in a clockwise direction. The second winding is disposed around the second magnetic part of the magnetic core in a counterclockwise direction. Namely, the first input terminal of the first winding is not directly adjacent to the second input terminal of the second winding adjacent to the first winding. The first output terminal of the first winding is not directly adjacent to the second output terminal of the second winding adjacent to the first winding. Consequently, an isolation distance between the first main body of the first winding and the second main body of the second winding is reduced. An overall distance between the first winding and the second winding is reduced. Consequently, the volume of the magnetic component is reduced and the inductance of the magnetic component is enhanced.
In accordance with an aspect of the present disclosure, there is provided a magnetic component. The magnetic component includes a substrate, a magnetic core, at least one first winding and at least one second winding. The magnetic core is disposed on the substrate and includes a first magnetic part and a second magnetic part. The first magnetic part and the second magnetic part are disposed on two opposite sides of the magnetic core. The at least one first winding is disposed around the first magnetic part of the magnetic core in a clockwise direction and includes a first input terminal and a first output terminal. The first input terminal and the first output terminal are inserted into the substrate. The at least one second winding is disposed around the second magnetic part of the magnetic core in a counterclockwise direction and includes a second input terminal and a second output terminal. The second input terminal and the second output terminal are inserted into the substrate.
The beneficial effects of the present disclosure are described below. The first winding of the magnetic component of the present disclosure is disposed around the first magnetic part of the magnetic core in a clockwise direction. The second winding is disposed around the second magnetic part of the magnetic core in a counterclockwise direction. Namely, the first input terminal of the first winding is not directly adjacent to the second input terminal of the second winding adjacent to the first winding. The first output terminal of the first winding is not directly adjacent to the second output terminal of the second winding adjacent to the first winding. Consequently, an isolation distance between the first main body of the first winding and the second main body of the second winding is reduced. An overall distance between the first winding and the second winding is reduced. Consequently, the volume of the magnetic component is reduced and the inductance of the magnetic component is enhanced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view illustrating a magnetic component according to a first embodiment of the present disclosure;
FIG. 2 is a schematic exploded view illustrating the magnetic component of FIG. 1;
FIG. 3 is a top view illustrating the magnetic component of FIG. 1;
FIG. 4 is a bottom view illustrating the magnetic component of FIG. 1;
FIG. 5 is a schematic equivalent circuit diagram illustrating the magnetic component of FIG. 1;
FIG. 6 is a schematic view illustrating a magnetic component according to a second embodiment of the present disclosure;
FIG. 7 is a schematic exploded view illustrating the magnetic component of FIG. 6;
FIG. 8 is a top view illustrating the magnetic component of FIG. 6;
FIG. 9 is a bottom view illustrating the magnetic component of FIG. 6;
FIG. 10 is a top view illustrating a magnetic component according to a third embodiment of the present disclosure; and
FIG. 11 is a top view illustrating a magnetic component according to a fourth embodiment of the present disclosure.

Description of reference numerals:

1, 1a, 1b, 1c, 1d: magnetic component
2: substrate
3: magnetic core
31: first magnetic part
32: second magnetic part
33: third magnetic part
34: fourth magnetic part
4: first winding
41: first main body
42: first input terminal
43: first output terminal
44: first sub winding
45: second sub winding
5: second winding
51: second main body
52: second input terminal
53: second output terminal
54: third sub winding
55: fourth sub winding
6: insulation portion
61: first sub insulation part
62: second sub insulation part
63: third sub insulation part
71: first inductor
71a: first terminal
71b: second terminal
72: second inductor
72a: first terminal
72b: second terminal
73: third inductor
73a: first terminal
73b: second terminal

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The present disclosure will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this disclosure are presented herein for purpose of illustration and description only. It is not intended to be exhaustive or to be limited to the precise form disclosed.
FIG. 1 is a schematic view illustrating a magnetic component according to a first embodiment of the present disclosure. FIG. 2 is a schematic exploded view illustrating the magnetic component of FIG. 1. FIG. 3 is a top view illustrating the magnetic component of FIG. 1. FIG. 4 is a bottom view illustrating the magnetic component of FIG. 1. As shown in FIGS. 1 to 4, the magnetic component 1 of this embodiment is disposed on a main circuit board (not shown) and includes a substrate 2, a magnetic core 3, a first winding 4 and two second windings 5.
The magnetic core 3 is disposed on the substrate 2 and includes a first magnetic part 31, a second magnetic part 32, a third magnetic part 33 and a fourth magnetic part 34. The first magnetic part 31 and the second magnetic part 32 are located on opposite sides of the magnetic core 3. The third magnetic part 33 and the fourth magnetic part 34 are also located on opposite sides of the magnetic core 3. The third magnetic part 33 and the fourth magnetic part 34 are connected between the first magnetic part 31 and the second magnetic part 32, respectively. In this embodiment, both ends of the first magnetic part 31 of the magnetic core 3 are connected with the first end of the third magnetic part 33 and the first end of the fourth magnetic part 34, respectively. Similarly, both ends of the second magnetic part 32 of the magnetic core 3 are connected with the second end of the third magnetic part 33 and the second end of the fourth magnetic part 34, respectively. Consequently, the magnetic core 3 is formed as an enclosed structure. The enclosed structure is composed of the first magnetic part 31, the second magnetic part 32, the third magnetic part 33 and the fourth magnetic part 34 of the magnetic core 3, or the first magnetic part 31, the second magnetic part 32, the third magnetic part 33 and the fourth magnetic part 34 of the magnetic core 3 are integrally formed into one piece. In this embodiment, the lengths of the first magnetic part 31 and the second magnetic part 32 are greater than the lengths of the third magnetic part 33 and the fourth magnetic part 34.
In this embodiment, the first winding 4 is disposed between the two second windings 5. As shown in FIGS. 1, 3, and 4, the first winding 4 is disposed around the first magnetic part 31 of the magnetic core 3 in a clockwise direction. The first winding 4 includes a first main body 41, a first input terminal 42 and a first output terminal 43. The first main body 41 is disposed around the first magnetic part 31 of the magnetic core 3. The first input terminal 42 is formed at the first end of the first winding 4. The first input terminal 42 is inserted into the substrate 2. The first output terminal 43 is formed at the second end of the first winding 4 opposite to the first end of the first winding 4. The first output terminal 43 is also inserted into the substrate 2. The first winding 4 receives electrical power from the main circuit board through the first input terminal 42 and supplies electrical power to the main circuit board through the first output terminal 43. In this embodiment, as shown in FIG 4, the first input terminal 42 and the first output terminal 43 of the first winding 4 are disposed on two opposite sides of the projection of the first magnetic part 31 on the substrate 2. The first output terminal 43 of the first winding 4 is disposed between the projected of the first magnetic part 31 on the substrate 2 and the projected of the second magnetic part 32 on the substrate 2.
Each second winding 5 is disposed around the second magnetic part 32 of the magnetic core 3 in a counterclockwise direction. Each second winding 5 includes a second main body 51, a second input terminal 52 and a second output terminal 53. The second main body 51 is disposed around the second magnetic part 32 of the magnetic core 3. The second input terminal 52 is formed at the first end of the second winding 5. The second input terminal 52 is inserted into the substrate 2. The second output terminal 53 is formed at the second end opposite to the first end of the second winding 5. The second output terminal 53 is also inserted into the substrate 2. The second winding 5 receives electrical power from the main circuit board through the second input terminal 52 and supplies electrical power to the main circuit board through the second output terminal 53. In this embodiment, as shown in FIG. 4, the second input terminal 52 and the second output terminal 53 of each second winding 5 are disposed on two opposite sides of the projection of the second magnetic part 32 on the substrate 2. The second input terminal 52 of the second winding 5 is disposed between the projection of the first magnetic part 31 on the substrate 2 and the projection of the second magnetic part 32 on the substrate 2. In this embodiment, the number of turns of the first main body 41 of the first winding 4 disposed around the first magnetic part 31 is equal to the number of turns of the second main body 51 of each second winding 5 disposed around the second magnetic part 32. For example, the number of turns of the first main body 41 of the first winding 4 disposed around the first magnetic part 31 and the number of turns of the second main body 51 of each second winding 5 disposed around the second magnetic part 32 are five turns.
Please refer to FIGS. 3 and 4, in this embodiment, the first winding 4 is disposed around the first magnetic part 31 of the magnetic core 3 in a clockwise direction. Each second winding 5 is disposed around the second magnetic part 32 of the magnetic core 3 in a counterclockwise direction. Consequently, the first input terminal 42 of the first winding 4 and the second input terminal 52 of the second winding 5 adjacent to the first winding 42 are disposed on two opposite sides of the first magnetic part 31. The first output terminal 43 of the first winding 4 and the second output terminal 53 of the second winding 5 adjacent to the first winding 42 are disposed on two opposite sides of the second magnetic part 32.
From above, the first winding 4 of the magnetic component 1 of the present disclosure is disposed around the first magnetic part 31 of the magnetic core 3 in a clockwise direction. The second winding 5 is disposed around the second magnetic part 32 of the magnetic core 3 in a counterclockwise direction. Namely, the first input terminal 42 of the first winding 4 is not directly adjacent to the second input terminal 52 of the second winding 5 adjacent to the first winding 42. The first output terminal 43 of the first winding 4 is not directly adjacent to the second output terminal 53 of the second winding 5 adjacent to the first winding 42. Consequently, an isolation distance between the first main body 41 of the first winding 4 and the second main body 51 of the second winding 5 is reduced. An overall distance between the first winding 4 and the second winding 5 is reduced. Consequently, the volume of the magnetic component 1 is reduced and the inductance of the magnetic component 1 is enhanced.
Please refer to FIGS. 1 to 4. In this embodiment, the magnetic component 1 further includes an insulation portion 6 for isolating the first winding 4 and the two second windings 5. The insulation portion 6 includes a first sub insulation part 61, two second sub insulation parts 62 and two third sub insulation parts 63. The first sub insulation part 61 is disposed between the first main body 41 of the first winding 4 and the second magnetic part 32. The two second sub insulation parts 62 are disposed on two opposite sides of the first sub insulation part 61, respectively. Each second sub insulation part 62 is disposed between the first main body 41 of the first winding 4 and the second main body 51 of the corresponding second winding 5. The two third sub insulation parts 63 are disposed on one sides of the corresponding second sub insulation parts 62 away from the first sub insulation part 61. Each third sub insulation part 63 is disposed between the second main body 51 of the second winding 5 and the first magnetic part 31.
FIG. 5 is a schematic equivalent circuit diagram illustrating the magnetic component of FIG. 1. As shown in FIGS. 1 to 5, in the circuit structure, the magnetic component 1 forms three inductors. The three inductors includes a first inductor 71, a second inductor 72 and a third inductor 73. The first inductor 71 is formed by the first winding 4 disposed around the first magnetic part 31. The first terminal 71a of the first inductor 71 is formed by the first input terminal 42 of the first winding 4. The second terminal 71b of the first inductor 71 is formed by the first output terminal 43 of the first winding 4. The second inductor 72 is formed by one of the two second windings 5 disposed around the second magnetic part 32. The first terminal 72a of the second inductor 72 is formed by the second output terminal 53 of the corresponding second winding 5. The second terminal 72b of the second inductor 72 is formed by the second input terminal 52 of the corresponding second winding 5. The third inductor 73 is formed by the other one of the two second windings 5 disposed around the second magnetic part 32. The first terminal 73a of the third inductor 73 is formed by the second output terminal 53 of the corresponding second winding 5. The second terminal 73b of the third inductor 73 is formed by the second input terminal 52 of the corresponding second winding 5. In this embodiment, the second terminal 72b of the second inductor 72, the first terminal 71a of the first inductor 71 and the second terminal 73b of the third inductor 73 are the same polarity terminal.
FIG. 6 is a schematic view illustrating a magnetic component according to a second embodiment of the present disclosure. FIG. 7 is a schematic exploded view illustrating the magnetic component of FIG. 6. FIG. 8 is a top view illustrating the magnetic component of FIG. 6. FIG. 9 is a bottom view illustrating the magnetic component of FIG. 6. As shown in FIGS. 6 to 9, compared to the magnetic component 1 of FIGS. 1 to 4, the number of the first winding 4 of the magnetic component 1a is one, and the number of the second winding 5 of the magnetic component 1a is two. One of the two second windings 5 is disposed between the other second winding 5 and the first winding 4. The structure of the first winding 4 and the second windings 5 of this embodiment is similar to the structure of the first winding 4 and the second windings 5 of FIGS. 1 to 4, and is not redundantly described hereinafter. In this embodiment, the insulation portion 6 of the magnetic component 1a only includes one first sub insulation part 61, one second sub insulation part 62 and one third sub insulation part 63 for isolating the first winding 4 and the adjacent second winding 5. The arrangement of the insulation portion 6 of the magnetic component 1a of this embodiment is similar to that of the insulation portion 6 of the magnetic component 1 of the first embodiment, and is not redundantly described hereinafter. In this embodiment, the magnetic core 3 only includes the first magnetic part 31 and the second magnetic part 32. The first magnetic part 31 and the second magnetic part 32 are arc-shaped structure. The two ends of the first magnetic part 31 are connected with the two ends of the second magnetic part 32. The magnetic core 3 is formed as an enclosed structure. The first magnetic part 31 and the second magnetic part 32 of the magnetic core 3 are integrally formed into one piece.
FIG. 10 is a top view illustrating a magnetic component according to a third embodiment of the present disclosure. As shown in FIG. 10, compared to the magnetic component 1 of FIG. 3, in this embodiment, the first main body 41 of the first winding 4 of the magnetic component 1b includes a first sub winding 44 and a second sub winding 45. The first sub winding 44 and the second sub winding 45 are disposed around the first magnetic part 31 separated from each other. The first sub winding 44 and the second sub winding 45 are connected with each other in series or in parallel through the wire inside the substrate 2. In this embodiment, the sum of the number of turns of the first sub winding 44 disposed around the first magnetic part 31 and the number of turns of the second sub winding 45 disposed around the first magnetic part 31 is equal to the number of turns of each second winding 5 disposed around the second magnetic part 32. For example, the number of turns of the first sub winding 44 disposed around the first magnetic part 31 and the number of turns of the second sub winding 45 disposed around the first magnetic part 31 are two. Alternatively, the number of turns of the first sub winding 44 disposed around the first magnetic part 31 is one and the number of turns of the second sub winding 45 disposed around the first magnetic part 31 is three. In this embodiment, the number of turns of each second winding 5 disposed around the second magnetic part 32 is four.
FIG. 11 is a top view illustrating a magnetic component according to a fourth embodiment of the present disclosure. As shown in FIG. 11, compared to the magnetic component 1b of FIG. 10, in this embodiment, the second main body 51 of each second winding 5 of the magnetic component 1c includes a third sub winding 54 and a fourth sub winding 55. The third sub winding 54 and the fourth sub winding 55 are disposed around the second magnetic part 32 separated from each other. The third sub winding 54 and the fourth sub winding 55 are connected with each other in series or in parallel through the wire inside the substrate 2. In this embodiment, the sum of the number of turns of the first sub winding 44 disposed around the first magnetic part 31 and the number of turns of the second sub winding 45 disposed around the first magnetic part 31 is equal to the sum of the number of turns of the third sub winding 54 disposed around the second magnetic part 32 and the number of turns of the fourth sub winding 55 disposed around the second magnetic part 32. For example, the number of turns of the first sub winding 44 disposed around the first magnetic part 31 and the number of turns of the second sub winding 45 disposed around the first magnetic part 31 are two. Alternatively, the number of turns of the first sub winding 44 disposed around the first magnetic part 31 is one and the number of turns of the second sub winding 45 disposed around the first magnetic part 31 is three.
As mentioned above, the first winding of the magnetic component of the present disclosure is disposed around the first magnetic part of the magnetic core in a clockwise direction. The second winding is disposed around the second magnetic part of the magnetic core in a counterclockwise direction. Namely, the first input terminal of the first winding is not directly adjacent to the second input terminal of the second winding adjacent to the first winding. The first output terminal of the first winding is not directly adjacent to the second output terminal of the second winding adjacent to the first winding. Consequently, an isolation distance between the first main body of the first winding and the second main body of the second winding is reduced. An overall distance between the first winding and the second winding is reduced. Consequently, the volume of the magnetic component is reduced and the inductance of the magnetic component is enhanced.

Claims

A magnetic component, comprising:
a substrate;

a magnetic core disposed on the substrate and comprising a first magnetic part and a second magnetic part, wherein the first magnetic part and the second magnetic part are disposed on two opposite sides of the magnetic core;

at least one first winding disposed around the first magnetic part of the magnetic core in a clockwise direction and comprising a first input terminal and a first output terminal, wherein the first input terminal and the first output terminal are inserted into the substrate; and

at least one second winding disposed around the second magnetic part of the magnetic core in a counterclockwise direction and comprising a second input terminal and a second output terminal, wherein the second input terminal and the second output terminal are inserted into the substrate.
The magnetic component according to claim 1, wherein the first input terminal and the first output terminal of the at least one first winding are disposed on two opposite sides of a projection of the first magnetic part on the substrate, and the second input terminal and the second output terminal of the at least one second winding are disposed on two opposite sides of a projection of the second magnetic part on the substrate.
The magnetic component according to claim 1, wherein the first input terminal of the at least one first winding and the second input terminal of the at least one second winding adjacent to the at least one first winding are disposed on two opposite sides of a projection of the first magnetic part on the substrate, and the first output terminal of the at least one first winding and the second output terminal of the at least one second winding adjacent to the at least one first winding are disposed on two opposite sides of a projection of the second magnetic part on the substrate.
The magnetic component according to claim 1, wherein the magnetic component comprises an insulation portion, wherein at least portion of the insulation portion is disposed between any two windings of the at least one first winding and the at least one second winding.
The magnetic component according to claim 1, wherein the at least one first winding comprises one first winding, the at least one second winding comprises two second windings, and the first windings is disposed between the two second windings.
The magnetic component according to claim 1, wherein the at least one first winding comprises one first winding, the at least one second winding comprises two second windings, and one of the two second windings is disposed between the other one of the two second windings and the first winding.
The magnetic component according to claim 1, wherein the magnetic core comprises a third magnetic part and a fourth magnetic part, the third magnetic part and the fourth magnetic part are disposed on two opposite sides of the magnetic core, wherein two ends of the first magnetic part is connected with a first terminal of the third magnetic part and a first terminal of the fourth magnetic part, respectively, two ends of the second magnetic part is connected with a second terminal of the third magnetic part and a second terminal of the fourth magnetic part, respectively, the magnetic core is formed as an enclosed structure, wherein the enclosed structure is composed of the first magnetic part, the second magnetic part, the third magnetic part and the fourth magnetic part, or the first magnetic part, the second magnetic part, the third magnetic part and the fourth magnetic part are integrally formed into one piece.
The magnetic component according to claim 1, wherein the first magnetic part and the second magnetic part of the magnetic core are arc-shaped structure, two ends of the first magnetic part are connected with two ends of the second magnetic part, the magnetic core is formed as an enclosed structure, wherein the first magnetic part and the second magnetic part of the magnetic core are integrally formed into one piece.
The magnetic component according to claim 1, wherein the number of turns of the at least one first winding disposed around the first magnetic part is equal to the number of turns of the at least one second winding disposed around the second magnetic part.
The magnetic component according to claim 1, wherein the at least one first winding comprises a first main body, the first main body comprises a first sub winding and a second sub winding, the first sub winding and the second sub winding are connected with each other in series or in parallel, the sum of the number of turns of the first sub winding disposed around the first magnetic part and the number of turns of the second sub winding disposed around the first magnetic part is equal to the number of turns of the at least one second winding disposed around the second magnetic part.
The magnetic component according to claim 10, wherein the at least one second winding comprises a second main body, the second main body comprise a third sub winding and a fourth sub winding, the third sub winding and the fourth sub winding are connected with each other in series or in parallel, the sum of the number of turns of the third sub winding disposed around the second magnetic part and the number of turns of the fourth sub winding disposed around the second magnetic part is equal to the sum of the number of turns of the first sub winding disposed around the first magnetic part and the number of turns of the second sub winding disposed around the first magnetic part.
The magnetic component according to claim 11, wherein the number of turns of the first sub winding disposed around the first magnetic part, the number of turns of the second sub winding disposed around the first magnetic part, the number of turns of the third sub winding disposed around the second magnetic part and the number of turns of the fourth sub winding disposed around the second magnetic part are equal.