KR101452825B1 - Transformer and power supply unit including the same - Google Patents

Abstract

A transformer according to one embodiment of the preset disclosure includes: a magnetic core, and a first coil unit which is arranged in the magnetic core and includes a laminate substrate which is formed by laminating the first layer with a conductive pattern, and a second coil unit which includes a conductive wire which has an insulation distance with the conductive pattern of the laminate substrate. The insulation distance is secured by an insulation layer which is combined with at least one of the first coil unit or the second coil unit.

Description

TRANSFORMER AND POWER SUPPLYING APPARATUS CONTAINING THE SAME

The present technology relates to a transformer and a power supply including the transformer.

A power supply unit is provided in the power supply unit, and a transformer in the power supply unit has a size corresponding to approximately 1/3 of the entire power supply unit.

Further, the transformer includes a core, a bobbin, a winding, and the like. Although the number of parts is small, the manufacturing process is complicated due to problems such as securing a space for the required creepage distance between the winding and the core, winding the primary coil to satisfy the safety standard, and winding the insulating tape around the coil of the secondary coil.

Further, when the coil is wound, there is a problem that the turn of the coil or the position of the winding is not constant depending on the operator.

Therefore, there is a need to develop a new transformer for miniaturization of the transformer and simplification of the manufacturing process.

In the following Patent Document 1, a transformer using a coil and a winding coil inserted in a magnetic pole portion of the core is disclosed in a thin film substrate.

Japanese Patent Publication No. 3437428

It is an object of one embodiment of the present disclosure to provide a transformer miniaturized with improved insulation characteristics between a first coil part and a second coil part and a power supply device in which the transformer is mounted.

The transformer of an embodiment of the present disclosure includes a magnetic core; A first coil part disposed in the magnetic core and including a laminated substrate in which a first layer on which a conductor pattern is formed is laminated; And a second coil portion including a conductor wire having an insulation distance from the conductor pattern of the laminate substrate, wherein the insulation distance is determined by an insulation layer coupled to at least one of the first coil portion and the second coil portion Can be secured.

The first layer may include a plurality of stacked layers to form an inductor pattern in the stacking direction. The stacked substrate may further include at least one of a second layer in which a shielding pattern is formed and a third layer in which a Vcc pattern for forming an induced current is formed .

The second layer may be formed on at least one of an upper portion and a lower portion of the inductor pattern in the stacking direction.

The third layer may be formed between the inductor pattern and the second layer in the upper part in the stacking direction.

The third layer may be formed between the inductor pattern and the second layer in the lower part of the stacking direction.

A dummy pattern layer is formed on at least one of an upper portion and a lower portion of the first layer in the laminating direction, and the dummy pattern layer may be continuously stacked in at least two sheets.

The conductor wire may be surrounded by at least two sheets of insulating paper.

The conductor wire is a triple insulated wire surrounded by three sheets of insulating paper, and the thickness of the triple insulated wire may be thinner than the thickness of the laminated board.

The distance between the conductor pattern of the second coil part and the conductor pattern of the first layer closest to the conductor wire may be less than 0.4 mm.

The magnetic core may include a first core portion having a core inserted into a core insertion hole formed in the first coil portion, and a second core portion having a middle and an outer portion arranged between the conductor wire to be coiled have.

The second core portion may include a rail groove that maintains a gap between the conductive wires to be wound.

The second core portion may include a lead groove formed inside the second core portion so that a portion of the conductor wire to be wound is not overlapped.

The lead-out groove may have a width corresponding to the portion to be drawn out.

The draw-out groove may have a width to allow the drawn-out portion to flow in the draw-out groove.

And the conductor wire may be drawn out from one open side of the outer side of the second core portion.

The opposite side of the open side of the outward can be sealed.

The first coil part may include a connector on which the terminal is formed and a stopper for determining the insertion depth of the connector.

And a spacer that is disposed between the inner surface of the magnetic core and the first coil part and makes the second coil part come into contact with the other surface of the inner surface of the magnetic core and the first coil part.

The spacer may comprise rubber of a buffer material.

The spacer may comprise a conductive material.

A transformer in accordance with one embodiment of the present disclosure includes a magnetic core; A first coil part disposed in the magnetic core and including a laminated substrate in which a first layer on which a conductor pattern is formed is laminated; And a second coil part including a conductor wire having an insulation distance from the conductor pattern of the laminate substrate, wherein the insulation distance is secured by an insulation sheet disposed between the first coil part and the second coil part .

The insulating sheet may be formed by stacking at least two or more sheets.

The distance between the conductor pattern of the first layer and the conductor pattern of the second coil part closest to the center of the conductor wire may be smaller than 0.4 mm.

A transformer in accordance with one embodiment of the present disclosure includes a magnetic core; A first coil portion including a first conductor wire wound and disposed in the magnetic core; And a second coil portion including a second conductor wire arranged to have an insulation distance from the first conductor wire, wherein the insulation distance is a distance between the first coil portion and the second coil portion, . ≪ / RTI >

The magnetic core includes a first core portion in which the first coil portion is disposed and a second core portion in which the conductor wire is disposed, and the insulating sheet separates the first core portion and the second core portion.

The insulating sheet may be formed by stacking at least two or more sheets.

The minimum distance between the first conductor wire and the second conductor wire disposed between the insulating sheets may be 0.4 mm or less.

A transformer in accordance with one embodiment of the present disclosure includes a magnetic core; A first coil portion disposed in the magnetic core and including a first laminated substrate formed by stacking layers in which a first conductor pattern is formed; And a second laminated substrate having an insulating distance from the first coil part and formed by stacking a layer on which a second conductor pattern is formed.

The insulation distance may be secured to at least one of the first laminated substrate and the second laminated substrate.

Wherein at least one of the first laminated substrate and the second laminated substrate is provided with a dummy pattern layer disposed between the first conductor pattern and the second conductor pattern, have.

The minimum distance between the first conductor pattern and the second conductor pattern disposed with the dummy pattern layer therebetween may be 0.4 mm or less.

The insulating distance may be secured by an insulating sheet formed between the first laminated substrate and the second laminated substrate.

The minimum distance between the first conductor pattern and the second conductor pattern disposed with the insulating sheet therebetween may be 0.4 mm or less.

A transformer in accordance with one embodiment of the present disclosure includes a magnetic core; A first coil portion disposed in the magnetic core and including a first laminated substrate formed by stacking layers in which a first conductor pattern is formed; And a second laminated substrate having an insulating distance from the first coil part and formed by stacking layers in which a second conductor pattern is formed, wherein the first laminated substrate and the second laminated substrate, The laminated substrate may be formed of one substrate.

The insulation distance may be secured by an insulation layer formed between the first coil part and the second coil part.

The minimum distance between the first conductor pattern and the second conductor pattern disposed with the insulating layer therebetween may be 0.4 mm or less.

A power supply device according to an embodiment of the present disclosure includes a transformer in which a laminated board including a first layer on which a conductor pattern is formed is disposed in a magnetic core, And a main board on which the transformer is mounted, wherein electrode pads are formed on the laminate board drawn out to the outside of the magnetic core, and the electrode pads are mounted on the main board so that the laminate board is horizontally mounted on the main board, May be soldered together with the electrode of the electrode.

A power supply device according to an embodiment of the present disclosure includes a transformer in which a laminated board including a first layer on which a conductor pattern is formed is disposed in a magnetic core, A terminal formed on one side of the laminated board drawn out to the outside of the magnetic core; And a main board on which the transformer is mounted. The connector may be inserted into and inserted into a slot formed in the main board so that the laminate board is mounted perpendicular to the main board.

According to the transformer of one embodiment of the present disclosure and the power supply device including the same, the creepage distance between the first coil portion and the second coil portion can be sufficiently secured.

In addition, complicated fabrication processes such as eliminating the bobbin structure can be eliminated, so that the size and manufacturing cost of the transformer can be reduced.

1 is a schematic diagram of a transformer in accordance with a first embodiment of the present disclosure;
2 is a schematic perspective view of a transformer in accordance with a first embodiment of the present disclosure;
3 is a plan view of a first coil section according to one embodiment of the present disclosure;
4 is a plan view of a second coil section according to one embodiment of the present disclosure;
5 is a cross-sectional view taken along line V-V 'of FIG. 2;
6 is a cross-sectional view showing another modification of the line V-V 'of FIG. 2;
7 is a cross-sectional view showing another modification of the line V-V 'of FIG. 2;
8A and 8B are a plan view and a perspective view of a first embodiment of the magnetic core of the present disclosure;
9A and 9B are a plan view and a perspective view of a second embodiment of the magnetic core of the present disclosure;
10A and 10B are a top view and a perspective view of a third embodiment of the magnetic core of the present disclosure;
11 is a schematic perspective view of a first embodiment of a layer stacked view of a first coil section of the present disclosure;
12 is a schematic perspective view of a second embodiment of a layer stacked view of a first coil section of the present disclosure;
FIG. 13 is a schematic plan view of two layers of the first coil part of the present disclosure extracted and shown. FIG.
14 is a schematic plan view showing two layers of the first coil part of the disclosure projected.
15 is a schematic perspective view of a transformer in accordance with a second embodiment of the present disclosure;
16 is a schematic perspective view of a transformer in accordance with a third embodiment of the present disclosure;
17 is a schematic perspective view of a transformer in accordance with a fourth embodiment of the present disclosure;
18 is a schematic side view showing the appearance of a transformer mounted on a circuit board in the adapter of the first embodiment of the present disclosure;
19 is a schematic front view showing a state of a transformer mounted on a circuit board in an adapter of the first embodiment of the present disclosure;
20 is a schematic front view showing a state of a transformer mounted on a circuit board in an adapter of a second embodiment of the present disclosure;
21 is a schematic plan view showing a state of a transformer mounted on a circuit board in an adapter of a third embodiment of the present disclosure;
22 is a schematic perspective view showing a state of a transformer mounted on a circuit board in the adapter of the third embodiment of the present disclosure;
23 is a schematic perspective view of a transformer in accordance with a fifth embodiment of the present disclosure;
24 is a perspective view showing the base shown in Fig. 23 in another direction; Fig.
25 is an exploded perspective view of the transformer disclosed in Fig.
26 is a perspective view showing the base shown in Fig. 23 in another direction; Fig.
27 is a side view of a transformer in accordance with a sixth embodiment of the present disclosure;
28 is a plan view along the direction A in Fig. 27;
Fig. 29 is a side view along the direction B in Fig. 27; Fig.
30 is an exploded perspective view of a transformer according to a seventh embodiment of the present disclosure;
31 is a side view of the transformer disclosed in Fig.
32 is a schematic perspective view showing a state of a transformer mounted on a circuit board in a power supply unit of the flat panel display unit of the present disclosure;
33 is a circuit diagram of a flyback converter of an adapter to which a transformer is applied according to an embodiment of the present disclosure;
34 is a circuit diagram of a power supply of a flat panel display unit to which a transformer is applied according to an embodiment of the present disclosure;

Hereinafter, specific embodiments of the present disclosure will be described in detail with reference to the drawings. It should be understood, however, that there is no intent to limit the invention to the particular embodiments disclosed, and that those skilled in the art, having the benefit of the teachings of this disclosure, Other embodiments which fall within the scope of the teachings of the present disclosure may be readily suggested, but are also included within the scope of this disclosure.

The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.

Transformer

Figure 1 is a schematic diagram of a transformer according to a first embodiment of the present disclosure, Figure 2 is a schematic perspective view of a transformer according to a first embodiment of the present disclosure, and Figure 3 is a perspective view of a transformer according to one embodiment of the present disclosure, 4 is a plan view of a second coil section according to one embodiment of the present disclosure;

FIG. 5 is a cross-sectional view taken along the line V-V 'in FIG. 2, FIG. 6 is a cross-sectional view showing another modification of the line V- Sectional view showing another modification of the first embodiment.

1 to 7, a transformer 1 according to a first embodiment of the present disclosure may include a magnetic core 10, a first coil portion 20, and a second coil portion 40 .

The magnetic core 10 includes a first core portion 12 having a space between the middle portion 122 and the outer core portion 124 and a middle portion 142 and an outer portion 144 corresponding to the first core portion 12, And a second core portion 14 having a first end portion and a second end portion.

Although the sectional shape is shown as an E-shaped core of an E-shaped shape, the present invention is not limited thereto. For example, the magnetic core 10 may be formed of an E-I type magnetic core, an I-I type magnetic core, or the like.

The first coil portion 20 may be a laminated substrate 22 including a plurality of thin layers 22'-12 on which conductor patterns 22-12 are formed and including an inductor pattern having a predetermined number of turns. For example, the layer (22'-12) is a thin polymer plastic substrate and is not particularly limited to materials having insulating properties.

The conductor patterns 22'-12 on the upper and lower layers 22'-12 are connected to the conductor patterns 22'-12 on the layers 22'-12 to form coiled inductor patterns, 12 via a via-electrode or other contact method.

Here, the upper and lower positions may be mutually changed. However, a corresponding portion of the first coil portion 20 adjacent to the second coil portion 40 may be defined as a lower portion, and a corresponding portion of the first coil portion 20 may be defined as an upper portion have. In addition, at least one of the first coil portion 20 and the second coil portion 40 can be mounted adjacent to the main board of the adapter or the power supply device in which the transformer is mounted, The adjacent portion can be defined as the lower portion.

The formation of the layers in the laminate substrate 22 will be described later in detail.

The first coil part 20 according to the present embodiment can be used as a primary coil. However, the present invention is not limited to this, and various modifications are possible, for example, by using the second coil section 40 described later as a primary coil.

The second coil portion 40 may include a conductor wire 44 having an insulation distance from the conductor pattern of the first coil portion 20. Here, the insulation distance diso is a distance between the conductor 22 formed on the layer 22-12 'of the first coil part 20 constituting the inductor pattern closest to the second coil part 40 as shown in FIG. 5, The distance between the pattern 22-12 and the conductor wire 44 can be defined.

When the distance between the first coil portion 20 and the second coil portion 40 becomes close to each other, the leakage inductance decreases.

The second coil part 40 may be insulated by surrounding the conductor wire 44 with at least two sheets of insulating paper.

The conductive wire 44 is a triple insulated wire 42 surrounded by three sheets of insulating paper and the thickness t40 of the triple insulated wire is smaller than the thickness t40 of the triple insulated wire. It may be thinner than the thickness t20.

The triple insulated wire 42 is disposed in a space formed between the middle 142 and the outer 144 of the second core portion 14 and may be wound around the middle portion 142.

The conductors included in the first coil part 20 and the second coil part 40 should have an insulation distance satisfying safety standards set by Underwriters Laboratories (UL).

According to UL's transformer safety regulations, the distance between the first coil part 20 and the second coil part 40 should be 0.4 mm or more when using one sheet of insulating paper, and about 0.4 mm or more when using three or more sheets of insulating paper. mm.

The thickness of the second coil part 40 may be smaller than the thickness of the laminated substrate 22 because the number of turns of the wire is determined by configuring the laminated substrate 22 of the first coil part 20 to be about 2.6 mm .

At this time, the distance from the conductor pattern 22-12 of the first layer 22'-12 closest to the conductor wire 44 of the second coil part 40 can be designed to be smaller than 0.4 mm. This makes it possible to secure the insulation distance of the transformer and miniaturize it.

Referring to FIG. 5, the triple insulated wire 42 may be wound into a single layer so that the wires do not overlap in the second core portion 14. At this time, since the triple insulated wire 42 is extended by one wire, the triple insulated wire 42 overlaps another portion of the triple insulated wire 42 at the drawn portion 45 (see FIG. 4). In order to solve this problem, as shown in FIG. 6, a lead-out groove 8 into which the portion 45 to be led out to the second core portion 14 is inserted can be disposed.

Referring to FIG. 6, a spacer 60 may be provided between the inner surface 123 of the magnetic core 10 and the first coil part 20. The spacer 60 is not limited in material, but may be a rubber 62 of buffer material. The spacer 60 may contact or adhere the triple insulated wire 42 to the other surface 143 of the first coil section 20 and one surface 123 of the magnetic core 10. The gap between the first coil portion 20 and the second coil portion 40 in the magnetic core 10 is made uniform so that the deviation of the leakage inductance that may occur between the conductors is reduced during manufacture of the transformer It can be made constant in advance.

The spacer 60 may be made of an insulating material to improve the insulation characteristics of the transformer. Electromagnetic interference (EMI) can be reduced by electrically connecting the magnetic core 10 and the laminated substrate 22 using the spacer 60 as a conductive material.

The first coil section 20 of the first laminated substrate 22 is provided with a connector 29 on which a terminal 292 for electrically connecting to an external substrate is formed and an insertion depth of the connector 29 And a latching jaw (23).

The connector 29 and the latching jaw 23 can facilitate electrical connection with an external substrate.

7, the insulation distance between the first coil part 20 and the second coil part 40 is set such that the insulation layer is connected to the first coil part 20 or the second coil part 40 itself It is possible to arrange and secure the insulating sheet 50 between the first coil portion 20 and the second coil portion 40.

At least two or more insulating sheets 50 may be stacked. 5, the distance from the center of the conductor wire 44 of the second coil portion 40 to the conductor pattern of the first layer closest to the center of the conductor wire 44 may be smaller than 0.4 mm .

Magnetic core

Figs. 8A and 8B are a plan view and a perspective view of a first embodiment of the magnetic core of the present disclosure, Figs. 9A and 9B are a plan view and a perspective view of a second embodiment of the magnetic core of the present disclosure, In a third embodiment of the present invention.

8A and 8B, a rail groove 146 may be formed in the second core portion 14 where the wire is wound. Since the rail groove 146 maintains the distance between the wires and can fix the winding position of the wire, the leakage inductance deviation occurring between the wires can be reduced.

9A and 9B, a lead groove 148 may be formed in the second core portion 14 in which the wire is wound. As described above, since the wire is wound in the second core portion 14 with one wire, overlapping occurs at the drawn portion. Therefore, it is possible to form the lead-out groove (148) in advance in the second core portion (14) to prevent overlap at the lead-out portion and obtain a uniform leakage inductance. In addition, the resistance generated in the wire itself due to overlapping can also be reduced.

Here, the position of the lead-out groove 148 may be formed in a range within an open side formed in the second core portion 14. [ As in the embodiment of FIGS. 9A and 9B, the lead-out groove 148 may have a width corresponding to the portion to be drawn out.

10A and 10B, the width of the lead-out groove 148 formed in the second core portion 14 on which the wire is wound is set so that the portion of the wire to be drawn out can be moved in the lead- Lt; / RTI >

As shown in FIGS. 10A and 10B, the lead-out groove 148 may be formed to be smaller than the width of the middle portion 142 to adjust the movable range of the wire.

10A and 10B, one side 145 of the outer core 144 of the second core part 14 is opened and the other side 147 is closed. It is possible to increase the EMI shielding effect because the area of the outer shell 144 is increased and the second core portion 14 surrounds the winding of the wire a lot.

FIG. 11 is a schematic perspective view of a first embodiment of a layered laminate of the first coil part of the present disclosure, and FIG. 12 is a schematic perspective view of a second embodiment of laminated laminate of the first coil part of the present disclosure.

11 and 12, the first coil part 20 includes first layers 22'-1, 22'-2, 22'-1, 22'-2, The second layers 24'-1 and 24'-2 on which the shielding patterns 24-1 and 24-2 are formed, And a third layer 26'-1 on which a Vcc pattern 26 for forming an induced current is formed.

The first, second, and third layers may be laminated to form a laminated substrate, and each of the layers may be provided with a through hole for inserting a core of the magnetic core.

Referring to FIGS. 11 and 12, the conductor patterns 22-1, 22-2, ..., 22'-12 of the first layers 22'-1, 22'- 12 are electrically connected by using a via electrode or the like, and a coil-shaped inductor pattern can be formed by stacking. The second layers 24'-1 and 24'-2 may be formed in the upper and lower portions of the first layers 22'-1, 22'-2, ... 22'-12 in the stacking direction. have.

The first coil part 20 may include at least one layer 220 of at least one dummy pattern so as to increase the insulation between the second coil part 40 and the magnetic core and at least one of the uppermost and lowermost parts of the laminate substrate 22. [ As shown in FIG.

When three thin layers 220 of the dummy pattern are used between the first coil portion 20 and the second coil portion 40, a gap between the first coil portion 20 and the second coil portion 40 The safety insulating distance can be ensured even if the distance is less than 0.4 mm. The second coil portion 40 may be another laminated substrate, or the first coil portion 20 and the second coil portion 40 may be formed of a single laminated substrate.

12 is an embodiment in which the embodiment of FIG. 11 and the third layer 26'-1 in which the Vcc pattern 26-1 is formed are disposed in the direction close to the second coil part 40 . The method of laminating the Vcc pattern 26-1 is not limited to the case of Figs. 11 and 12, but the upper and lower portions of the shielding patterns 24-1 and 24-2 in the laminating direction of the shielding patterns 24-1 and 24-2, 22-2, ... 22-12, or between each of them. Also, the lamination method of the shielding patterns 24-1 and 24-2 can be patched by deleting at least one, for example.

FIG. 13 is a schematic plan view showing two layers of the first coil part of the present disclosure extracted and FIG. 14 is a schematic plan view showing two layers of the first coil part of the disclosure projected. FIG.

13 and 14, the maximum width W24 of the edges formed by the shielding patterns 24-1 and 24-2 of the second layers 24'-1 and 24'-2 is greater than the maximum width W24 of the third layer 24 ' May be greater than the maximum width W26 of the edge of the Vcc pattern 26 formed in the Vcc pattern 26'-1. For example, it is possible to increase the EMI shielding effect by making the area of the shielding patterns 24-1 and 24-2 larger than the area of the Vcc pattern 26 as a whole.

On the other hand, the area of the shielding patterns 24-1 and 24-2 formed in one layer can be increased for the same reason as the area of the inductor pattern formed in one layer.

The shielding patterns 24-1 and 24-2 of the second layers 24'-1 and 24'-2 are separated from the start point of the conductor and the conductor finish point. However, the shielding patterns 24-1 and 24'- 2) may be at least 0.9 turn. The area of the shielding patterns 24-1 and 24-2 may be increased to increase the EMI shielding effect.

Figure 15 is a schematic perspective view of a transformer in accordance with a second embodiment of the present disclosure, Figure 16 is a schematic perspective view of a transformer in accordance with a third embodiment of the present disclosure, and Figure 17 is a perspective view of a transformer according to a fourth embodiment of the present disclosure Fig.

In the following description of the embodiments, the description of the transformer of the first embodiment may be included as long as there is no contradiction.

Referring to Fig. 15, the first coil portion 20 and the second coil portion 40 may include first conductor wires and second conductor wires, which are wound and disposed in the magnetic core 12, 14, respectively.

The first conductor wire and the second conductor wire have an insulation distance, and the insulation distance can be secured by an insulation sheet (50) formed between the first coil part (20) and the second coil part have.

The magnetic core 12, 14 may include a first core portion 12 in which the first coil portion 20 is disposed and a second core portion in which the conductor wire is disposed. The insulating sheet 50 may be separated from the first core portion 12 and the second core portion 14 in order to further increase the creepage distance between the first conductor wire and the second conductor wire.

In order to ensure the insulation performance between the first conductor wire and the second conductor wire, at least two or more insulation sheets 50 may be laminated.

In addition, the minimum distance between the first conductor wire and the second conductor wire disposed with the insulating sheet 50 therebetween may be 0.4 mm or less.

Referring to Fig. 16, the second coil part 40 can be formed as a laminated substrate. The number of turns of the inductor pattern formed in the first coil part 20 and the second coil part 40 may have a number of turns suited to the output range of the voltage to be converted.

And may include an insulating sheet 50 for securing an insulating distance between the first coil part 20 and the second coil part 40 when the second coil part 40 is a laminated board.

At least two thin layers are formed between the first coil part 40 and the second coil part 40 and between the first coil part 40 and the second coil part 40 is 0.4 mm, it is possible to secure a safe insulation distance, and the insulating sheet 50 can be omitted.

In the transformer 1 of the embodiment shown in FIG. 17, the first coil part 20 and the second coil part 40 may be formed of a laminated substrate, respectively. The first coil part 20, (40) may be formed of a single substrate. The one substrate may further include an insulation layer 54 having an insulation pattern 52 formed between the first coil portion 20 and the second coil portion 40.

In this embodiment, even if the insulating layer 50 is removed, if three or more thin dummy layers are added between the first coil portion 20 and the second coil portion 40, 2 coils 40 can be sufficiently secured.

Figure 18 is a schematic side view showing the appearance of a transformer mounted on a circuit board in the adapter of the first embodiment of the present disclosure and Figure 19 is a view of a transformer mounted on a circuit board in the adapter of the first embodiment of the present disclosure FIG.

The transformer 1 is horizontally mounted on the main board 160 in the space of the case 102 of the adapter 100 which is one embodiment of the power supply apparatus shown in Figs. 18 and 19. The transformer 1 may include all of the transformer embodiments described above.

An electrode pad is formed on the laminated substrate 20 drawn out to the outside of the magnetic core 10 and the electrode pad is mounted on the main substrate 160 such that the laminated substrate 20 is horizontally mounted on the main substrate 160. [ And may be soldered 150 to the electrodes of the substrate 160.

20 is a schematic front view showing a state of a transformer mounted on a circuit board in the adapter of the second embodiment of the present disclosure;

The embodiment of FIG. 20 can be mounted horizontally on the main board 160 as in the embodiment of FIGS. 18 and 19. However, the main board 160 and the laminated board 20 can be connected by using the terminal pin 155 instead of the soldering connection. Here, the inductor pattern in the laminated substrate 20 may be electrically connected by the terminal pin 155.

Fig. 21 is a schematic plan view showing a transformer mounted on a circuit board in the adapter of the third embodiment of the present disclosure, and Fig. 22 is a view of a transformer mounted on a circuit board in the adapter of the third embodiment of the present disclosure Fig.

21 and 22, the transformer 1 may be vertically mounted on the main board 160, unlike the embodiment of Figs. 18 and 19 or the embodiment of Fig. In this case, the connector 29 formed on the laminated board 20 may be inserted into the slot terminal 162 formed on the main board 160.

The insertion depth of the connector 29 may be defined by a latching protuberance 23 formed on the laminated board 20.

FIG. 23 is a schematic perspective view of a transformer according to a fifth embodiment of the present disclosure, FIG. 24 is a perspective view showing the base shown in FIG. 23 in another direction, and FIG. 25 is an exploded perspective view of the transformer disclosed in FIG. 26 is a perspective view showing the base shown in Fig. 23 in another direction.

23 to 26, the transformer 1 according to the present embodiment is similar to any of the transformers described in the first to fourth embodiments described above, and further includes a base 3 have.

Therefore, detailed description of the same components as those of the above-described embodiment will be omitted, and the base 3 having a difference will be mainly described.

The base 3 according to the present embodiment has a coil assembly 1 'in which the magnetic core 12, 14 and the first and second coil portions 20, 40 are coupled and fixedly coupled.

To this end, the base 3 may include a receiving portion 38 and terminal portions 34a and 34b.

The receiving portion 38 is a space in which the coil assembly 1 'is accommodated or coupled with a seating portion 31 on which the coil assembly 1' is seated, and at least one As shown in FIG.

The seat portion 31 may be a flat plate with a bottom surface. However, the present invention is not limited to this, and various modifications are possible, such as forming at least one hole in the inside for smooth heat release, or forming a lattice or a radial frame.

The side wall 32 may be formed to protrude upward from the seating part 31. The receiving portion 38 can be configured as a space for receiving the coil assembly 1 'in the form of a container by the seating portion 31 and the side wall 32. [

The sidewall 32 may be provided to protect the coil assembly 1 'and ensure insulation between the coil assembly 1' and other electronic components mounted on the main substrate 160 (e.g., 160 of FIG. 18) .

Therefore, in the case where the electronic parts are not disposed at the adjacent positions or the insulation is not required, the side wall 32 in the corresponding direction can be omitted.

At least one coil outlet 33 is formed in the side wall 32. The coil outlet 33 may be formed in a groove shape, and a part of the side wall 32 may be cut.

The coil lead-out port 33 is used as a path through which the lead wire 40a of the first coil part 20 formed of the conductor wire 44 is led out to the outside of the receiving part 38. [ Therefore, the coil lead-out opening 33 is formed with a width (or height) larger than the diameter of the lead wire 40a. Also, at least two lead wires 40a according to the present embodiment are drawn out through the coil outlet 33. Therefore, the coil lead-out opening 33 can be formed to have a size such that the two lead wires 40a can be easily drawn out.

The coil lead-out port 33 may be formed corresponding to the position where the second coil part 40 is disposed since only the lead wire 40a of the second coil part 40 is drawn out. In the case of the present embodiment, the second coil portion 40 is stacked and disposed on top of the first coil portion 20. [ Therefore, the coil outlet 33 may be formed not as a whole of the side wall 32, but as a groove cut to the middle portion of the side wall 32.

On the other hand, when the second coil portion 40 is stacked and disposed on the lower portion of the first coil portion 20, the coil outlet 33 may be formed in the shape of a groove that cuts the entire side wall 32. [

On the other hand, in this embodiment, only one coil outlet 33 is used. However, the present invention is not limited to this, and various applications such as forming a plurality of coil outlets 33 as necessary and dispersing and drawing lead wires 40a into the coil outlets 33 are possible. Further, the coil outlet 33 can be formed in the form of a hole, not a groove.

The terminal portions 34a and 34b may include a first terminal portion 34a and a second terminal portion 34b. The first terminal portion 34a is a portion used for electrically connecting the first coil portion 20 to the main board and the second terminal portion 34b is a portion used for electrically connecting the second coil portion 40 to the main board. Which is used to become a member.

The first terminal portion 34a includes a plurality of terminal pins 35.

The terminal pins 35 are fastened through the first terminal portion 34a. Accordingly, the terminal pins 35 are disposed so as to protrude from both the top and bottom of the first terminal portion 34a.

Here, the terminal pin 35 protruding to the upper portion of the first terminal portion 34a is engaged with the first coil portion 20 of the coil assembly 1 '. For example, the terminal pins 35 are inserted into the terminal holes 29a formed in the first coil part 20 and electrically connected to the first coil part 20 through a conductive bonding member (not shown) such as solder .

25, the first terminal portion 34a is formed at a position corresponding to the portion where the terminal holes 29a of the first coil portion 20 are disposed, and the terminal pins 35 are formed in the terminal holes 29a Respectively.

Here, the terminal holes 29a of the first coil part 20 may be formed to penetrate the terminal 292 of FIG. 3 described above. In addition, a conductive material may be applied to the inside of the terminal hole 29a to improve electrical reliability.

Thus, the terminal pin 35 inserted into the terminal hole 29a can be electrically connected to the terminal 292 and the conductor pattern 22-12 through a conductive bonding member (not shown).

In this embodiment, the first terminal portion 34a is elongated along one of the corners of the square seating portion 31. [ However, the present invention is not limited thereto, and various modifications are possible as needed, for example, at the vertex portion of the seat portion 31 or inside the seat portion 31. [

On the other hand, the terminal pins 35 protruding to the lower portion of the first terminal portion 34a are bonded to the main board. Accordingly, the first coil part 20 is electrically connected to the main board through the terminal pins 35 of the first terminal part 34a.

The second terminal portion 34b may be formed at a position spaced apart from the first terminal portion 34a by a predetermined distance. In this embodiment, the second terminal portion 34b is formed on the opposite side of the first terminal portion 34a.

The second terminal portion 34b guides the lead wire 40a of the second coil portion 40 constituted by a wire. The second terminal portion 34b is connected to the terminal 37 and the lead wire 40a for supporting the lead wires 40a of the second coil portion 40 drawn out of the receiving portion 38 through the coil lead- And a plurality of fastening grooves 36 to which the ends of the fastening holes 36 are fastened.

The terminal block 37 protrudes in the form of a block at a lower portion of the lead wire 40a to support the lead wire 40a and a fastening groove 36 is formed at the end.

As shown in FIG. 23, the fastening groove 36 is a portion where the lead wire 40a of the second coil part 40, from which the insulating coating is partially removed, is inserted and fastened, .

As the lead wire 40a is fastened to the fastening groove 36, the covering of the lead wire 40a is removed so that the exposed portion of the conductor wire 44 protrudes to the lower portion of the second terminal portion 34b, .

The base 3 according to the present embodiment is connected to the terminal pins 35 of the first terminal portion 34a and the lead wires 40a of the second coil portion 40 fastened to the second terminal portion 34b, And can be mounted and bonded to the substrate.

Here, the lead wire 40a of the first coil portion 20 can be more firmly joined to the engaging groove 36 through a separate adhesive member. However, the present invention is not limited thereto, and various applications are possible, such as forming protrusions in the fastening grooves 36, or fitting the lead wires 40a into the fastening grooves 36 through the shape of the fastening grooves 36.

The end of the terminal block 37 according to the present embodiment is configured to protrude a certain distance from the seat 31 forming the body of the base 3. This is a configuration for securing an insulation distance.

Since the transformer 1 according to the present embodiment is manufactured in a small size, when both the first terminal portion 34a and the second terminal portion 34b are formed on one side (or edge) of the mounting portion 31, The distance between the second terminal portion 34a and the second terminal portion 34b may be formed at an interval equal to or less than the insulation distance. Since the lead wire 40a of the second terminal portion 34b (the portion from which the insulating coating is removed) and the first coil portion 20 are disposed adjacent to each other by the coil lead-out opening 33, it is difficult to secure the insulation distance.

The base 3 according to the present embodiment is configured such that the terminal block 37 of the second terminal portion 34b protrudes a certain distance from the seating portion 31 in order to ensure an insulation distance from the above elements. Here, the protruding direction may be any direction as long as it is away from the first terminal portion 34a or the coil outlet 33. [

The protruding distance of the terminal block 37 may be defined as a distance that can secure an insulation distance from the first coil portion 20 exposed by the first terminal portion 34a or the coil outlet 33.

The transformer 1 according to the present embodiment configured as described above can be easily mounted on the main board because it includes the base 3. [

When the base 3 is not used as in the above-described embodiments, the lead wires 40a of the second coil part 40 must be manually mounted on the main board, which increases manufacturing time. However, when the base 3 is provided as in the present embodiment, since the base 3 to which the coil assembly 1 'is coupled by the automation process can be mounted on the main board, the manufacture is easy and the manufacturing time can be reduced .

Meanwhile, the transformer having the base according to the present invention can be variously modified.

FIG. 27 is a side view of a transformer according to a sixth embodiment of the present disclosure, FIG. 28 is a plan view along the direction A in FIG. 27, and FIG. 29 is a side view along the direction B in FIG.

27 to 29, the transformer 1 according to the present embodiment is configured similarly to the transformer 1 shown in Fig. 23 described above and differs only in the structure of the base 3.

In the case of the base 3 according to the present embodiment, since the first terminal portion 34a can be configured in the same manner as the above-described base 3, a description thereof will be omitted.

The second terminal portion 34b according to the present embodiment may include a terminal block 37, a protrusion 37a, and a terminal pin 35a.

The terminal block 37 may be configured similar to the above-described terminal block of the base (37 of FIG. 26), but the fastening groove 36 is omitted, and instead a plurality of terminal pins 35a protruding downward are provided.

The lead wires 40a of the second coil part 40 drawn out through the coil lead-out port 33 are dispersed on both sides with the terminal block 37 as a center and then connected to the terminal pins 35a to be fastened. In this case, the terminal block 37 is interposed between the two lead wires 40a and functions to prevent mutual contact.

27, the terminal block 37 of the second terminal portion 34b according to the present embodiment has a stepped portion 37b at a portion where the terminal pin 35a is fastened, Are fastened along the stepped portion 37b. That is, the stepped portion 37b fastens the terminal pins 35a to the terminal block 37 on different horizontal planes.

The step 37b according to the present embodiment is formed such that the thickness of the terminal block 37 becomes thinner toward the outside. Therefore, the terminal pins 35a disposed on the outer side are fastened to the terminal blocks 37 on the upper side than the terminal pins 35a disposed on the inner side.

This configuration is intended to prevent mutual short-circuiting in the process of connecting and soldering the lead wires 40a to the adjacent terminal pins 35a. For example, when the terminal pin 35a is fastened to the terminal block 37 in the same horizontal plane, the distance between the terminal pins 35a should be further separated due to the volume of the lead wire 40a wound on the terminal pin 35a Short circuit can be avoided.

As a result, the size of the terminal block 37 increases, and the overall size of the transformer 1 increases.

On the other hand, when the terminal pins 35a are fastened on different horizontal surfaces as in the present embodiment, the lead wires 40a are wound on the terminal pins 35a at different vertical positions, Can be minimized. Thus, the size of the transformer 1 can be minimized.

On the other hand, in contrast to the present embodiment, it is also possible to form the stepped portion so that the thickness of the terminal block 37 becomes thinner toward the inside of the base 3 to fasten the terminal pin 35a. In this case, It is difficult to apply molten solder to the terminal pin 35 which has been formed.

However, when the step 37b is formed in such a manner that the thickness of the terminal block 37 is reduced toward the outer side as in the present embodiment, the terminal pins 35a of the second terminal portion 34b (i.e., the connection portion of the lead wire) The molten solder can be applied to all the terminal pins 35a of the second terminal portion 34b by one step.

The protruding portion 37a protrudes from the lower portion of the lead wire 40a of the second coil portion 40 drawn out through the coil outlet 33 so that the lead wire 40a does not hit the bottom of the seating portion 31, ). Therefore, the protrusion 37a can protrude in various forms as long as it can easily support the lead wire 40a.

In addition, the base 3 according to the present embodiment may have at least one support 39 formed on the lower surface, that is, the opposite surface of the seat 31, as shown in Fig.

The support portion 39 is provided to separate the lower surface of the base 3 from the main substrate when the base 3 is mounted on the main substrate. In this case, the flow of air can be generated through the space S formed between the base 3 and the main substrate, so that the heat emission effect can be enhanced.

The support portion 39 of the present embodiment is an example in which the lower portions of the first and second terminal portions 34a and 34b protrude in a block shape. However, the present invention is not limited to this, and various modifications are possible, such as forming a support in the form of a projection or a partition wall.

FIG. 30 is an exploded perspective view of a transformer according to a seventh embodiment of the present disclosure, and FIG. 31 is a side view of the transformer disclosed in FIG.

First, referring to FIG. 30, the coil assembly 1 'of the transformer 1 according to the present embodiment includes the magnetic core 12, 14, the first coil portion 20, A coil portion 40, and a base 3. The second coil part 40 may include a plurality of (for example, two) second coil parts 40 and may be disposed at the top and bottom of the first coil part 20, respectively.

Here, the plurality of second coil portions 40 may be connected to each other in parallel. In this case, the leakage inductance can be reduced, thereby increasing the efficiency of the transformer 1 and reducing the heat generation temperature.

The configuration of the present invention is not limited to the above configuration, and various applications such as connecting a plurality of second coil portions 40 in series are possible.

Further, an insulating member 65 may be provided between the second coil portion 40 and the magnetic core 12, 14. The insulating member 65 may be a donut-shaped insulating tape or the like, but is not limited thereto.

The plurality of second coil portions 40 according to the present embodiment are stacked on the lower and upper portions of the first coil portion 20, respectively. Therefore, the coil outlet 33 of the base 3 is formed in the shape of a groove that cuts the entire side wall 32 in the vertical direction as shown in FIG. Thus, both the lower portion of the first coil portion 20 and the upper portion of the second coil portion 40 can be easily drawn out to the outside of the receiving portion 38.

The base 3 according to the present embodiment is formed in such a manner that the terminal block 37 of the second terminal portion 34b is protruded to the outside and the four wires The conductor wire lead wires 40a of the conductor wires 40a are dispersed on both sides of the terminal pin 37 on both sides of the terminal pin 37 and then are fastened to the terminal pins 35a. As described above, the transformer according to the present invention has a base Therefore, it is easy to mount on the main board, and the manufacturing thereof is advantageous.

32 is a schematic perspective view showing a state of a transformer mounted on a circuit board in a power supply unit of the flat display unit of the present disclosure;

The transformer 1 of the embodiments of the present disclosure may also be applied to the power supply of a thinned display device 200 such as a TV, a computer monitor, and the like.

32 may include a display panel 202 and a chassis 204 on which a printed circuit board 106 of a power supply unit for supplying driving power for the display panel 202 is mounted.

It is possible to further downsize the power supply apparatus by mounting the transformer 1 of the present invention which is miniaturized.

33 is a flyback converter circuit diagram of an adapter to which a transformer is applied according to an embodiment of the present disclosure;

The circuit diagram of FIG. 33 is a circuit diagram 300 of a flyback converter of an adapter that is an example of a power supply to which a transformer (TF) according to one embodiment of the present disclosure is applied.

The AC input voltage Vin is rectified at the rectifier 306 and provided to the transformer TF at which time the flyback switching circuit 302 can switch the main switch MS on and off.

The drain-source voltage Vds of the main switch MS can be controlled according to the on / off operation of the main switch MS.

For example, when the main switch MS is turned on, the primary current I1 flows through the primary switch MS to a primary coil L1 of the transformer TF with a predetermined waveform, When the main switch MS is turned off, the energy of the primary coil L1 of the transformer TF is induced in the secondary coil L21 so that the secondary current I2 flows in a different waveform.

Through this operation, the voltage of the secondary coil L2 of the transformer TF is supplied to the output voltage Vout through the output capacitor Co.

34 is a circuit diagram of a power supply of a flat panel display unit to which a transformer according to an embodiment of the present disclosure is applied.

The circuit diagram of Fig. 34 is a circuit diagram 400 of a power supply applied to a flat panel display device to which a transformer (TF) according to one embodiment of the present disclosure is applied.

34 may include a switching unit 413, a transforming unit 414 and an output unit 415. The power supply unit 410 may include a rectifying smoothing unit 411, a power factor correcting unit 412, May be included.

The rectifying and smoothing unit 411 can rectify and smooth the AC power and transmit it to the power factor correcting unit 412. The power factor correcting unit 412 can correct the power factor by adjusting the phase difference between the voltage and current of the rectified power from the rectifying smoothing unit 411. The power factor correction unit 412 adjusts the current waveform of the rectified power source to follow the voltage waveform, It may be corrected.

The switching unit 413 may include at least two switches M1 and M2 stacked between an input power supply terminal to which the DC power from the power factor correcting unit 412 is input and the ground, ) And the second switch M2 can be performed by the alternate switching operation.

The transforming unit 414 may include a resonant tank 414a and a transformer 414b. The resonance tank 114a may provide resonance operation of the inductor-inductor-capacitor Lr, Lm, Cr, LLC, and one of the inductors Lm may be a magnetization inductor of the transformer 414b.

The transformer 414b may include a primary winding Np and a plurality of secondary windings Ns1 and Ns2 and the primary winding Np and the plurality of secondary windings Ns1 and Ns2 may be electrically insulated from each other. For example, the primary winding Np may be located on the primary side where the electrical properties of the ground are different from each other, and the plurality of secondary windings Ns1 and Ns2 may be located on the secondary side.

The primary winding Np and the secondary windings Ns1 and Ns2 form a preset winding ratio and the secondary windings Ns1 and Ns2 can vary the voltage level according to the winding ratio to output power.

The output section 115 can stabilize the power from the plurality of secondary windings Ns1 and Ns2 and output a plurality of DC power sources Vom and Vos. The plurality of secondary windings Ns1 and Ns2 And output units 415a and 415b of output units 415a and 415b.

For example, when the plurality of secondary windings Ns1 and Ns2 are the first secondary winding Ns1 and the second secondary winding Ns2, the output section 415 includes the first output unit 415a and the second output unit 415b, (415b).

The first output unit 415a can rectify and stabilize the first power source Vom from the first secondary winding Ns1 and output the second power unit Vom from the second secondary winding Ns2, The second power source Vos can be rectified and stabilized and output.

1, 2: Transformer
1 ': coil assembly
3: Base
10: magnetic core 20: first coil part
40: second coil part 50: insulating film
100: adapter 160: main board

Claims (14)

Magnetic core;
A first coil part disposed in the magnetic material core, the first coil part including a laminated substrate on which a layer on which a conductor pattern is formed is laminated; And
And a second coil portion disposed on at least one of an upper portion and a lower portion of the laminated substrate and having at least three layers of insulating material covering the conductor wire and the conductor wire,
Wherein an insulation distance between the conductor wire and the conductor pattern closest to the conductor wire is secured.
The method according to claim 1,
And the thickness of the second coil portion is thinner than the thickness of the laminated substrate.
The method according to claim 1,
Wherein a distance between the conductor wire and the conductor pattern closest to the conductor wire is 0.4 mm or less.
The method according to claim 1,
And a spacer disposed between the inner surface of the magnetic core and the first coil portion to bring the second coil part into contact with the other surface of the inner surface of the magnetic core and the first coil part.
5. The method of claim 4,
Wherein the spacer comprises a rubber of buffer material.
5. The method of claim 4,
Wherein the spacer comprises a conductive material.
The method according to claim 1,
Wherein the conductor pattern includes at least one of a coil pattern to which a voltage is applied, a shielding pattern, and a Vcc pattern in which a Vcc voltage is induced.
8. The method of claim 7,
Wherein the laminated substrate includes a through hole through which the core of the magnetic core is inserted,
Wherein at least one of the coil pattern, the shielding pattern, and the Vcc pattern is disposed around the through hole.
9. The method of claim 8,
Wherein a maximum width of the shielding pattern is larger than a maximum width of the Vcc pattern.
9. The method of claim 8,
Wherein an area of the shielding pattern is larger than an area of the Vcc pattern.
8. The method of claim 7,
And the Vcc pattern is disposed adjacent to the second coil portion.
8. The method of claim 7,
Wherein the Vcc pattern is disposed in one of an upper portion and a lower portion in the stacking direction of the shielding pattern.
8. The method of claim 7,
Wherein the Vcc pattern is disposed in one of an upper portion and a lower portion of the conductor pattern in the stacking direction.
8. The method of claim 7,
And the Vcc pattern is disposed between the shield pattern and the coil pattern.

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