CN204651134U - Transformer and adapter - Google Patents

Abstract

Provide simple, the easily miniaturized transformer of a kind of structure and adapter, transformer comprises: primary winding part, comprises multilager base plate, and stacking in described multilager base plate have multiple substrates with coil pattern; Secondary coil part, to have at least one in the coil turn being different from described primary winding part, the upper surface being positioned at described multilager base plate and lower surface and to comprise wire and apply the insulating material of described wire; And masked segment, to be arranged in described primary winding part and to comprise at least one substrate, at least one substrate described is provided with shielding pattern.

Description

Transformers and Adapters

technical field

This disclosure relates to transformers and adapters.

Background technique

The use of portable electronic devices, including portable telephones, has become widespread.

Such portable electronic devices often include batteries so that they can operate even when no external power is supplied thereto. In addition, the portable electronic device includes a power input so that a battery embedded therein can be charged using direct commercial mains power.

Meanwhile, since the direct commercial power supply supplies a current level suitable for large home appliances, it is not suitable for small devices such as portable electronic devices. Therefore, in order to use direct commercial power as a power source for portable electronic devices, a separate adapter is required.

Such adapters include transformers that convert direct commercial power to a voltage suitable for the corresponding portable electronic device. Here, the transformer (the part responsible for the main function of the adapter) determines the size of the adapter. Therefore, in order to miniaturize the adapter and improve the quality of the adapter, it is necessary to develop a transformer with a simple structure.

For ease of reference, Patent Documents 1 and 2 are provided as prior art related to the present disclosure.

[Prior art literature]

(Patent Document 1) KR2006-0027505A

(Patent Document 2) US2009-0295528A1

Utility model content

An aspect of the present disclosure may provide a transformer that can be easily miniaturized.

An aspect of the present disclosure may also provide an adapter capable of being miniaturized.

According to an aspect of the present disclosure, there is provided a transformer including: a primary coil portion including a multilayer substrate in which a plurality of substrates having coil patterns are stacked; a secondary coil portion having a portion of coil turns positioned on at least one of an upper surface and a lower surface of the multilayer substrate, and including a wire and an insulating material coating the wire; and a shielding portion disposed on the primary coil portion and including at least one substrate, A shielding pattern is provided on at least one substrate.

The area of the shielding pattern is equal to or larger than that of the coil pattern of the primary coil portion adjacent to the shielding pattern.

The width of the bent portion forming the shield pattern is different from the width of the bent portion of the coil pattern adjacent to the primary coil portion of the shield pattern.

The shielding pattern has an open curved shape in which a part is opened.

The shielding pattern is arranged parallel to an edge of the substrate of the shielding portion.

The shield pattern is formed of a single curved line having a coil shape.

The shield pattern is formed of a plurality of curved lines having a coil shape.

The shield pattern is connected to the coil pattern of the primary coil portion.

The shield pattern is connected to the core part.

The shielding portion includes: a first shielding portion arranged on one side of the primary coil portion; and a second shielding portion arranged on the other side of the primary coil portion.

The first shielding portion is connected to the second shielding portion through a via electrode penetrating the primary coil portion.

According to another aspect of the present disclosure, a transformer may include: a primary coil (primary coil) portion including a plurality of substrates forming a coil pattern; a second coil (second coil) portion including an insulating coil; and a shield portion forming On the primary coil portion and including one or more substrates forming a shielding pattern.

An area of the shielding pattern may be equal to or larger than an area of the coil pattern of the primary coil portion adjacent to the shielding pattern.

A width of a curved line forming the shielding pattern may be different from a width of a curved line forming a coil pattern of a primary coil portion adjacent to the shielding pattern.

The shield pattern may have an open curved shape with a portion thereof opened.

A shielding pattern may be formed along an edge of the substrate.

The shield pattern may be formed of a single curved line having a coil shape.

The shielding pattern may be formed of a plurality of curved lines having a coil shape.

The shield pattern may be connected to the coil pattern of the primary coil portion.

The shield pattern can be connected to the core part.

The shielding part may include: a first shielding part formed on one side of the primary coil part; and a second shielding part formed on the other side of the primary coil part.

The first shielding part may be connected to the secondary shielding part through via electrodes penetrating the primary coil part.

The coil pattern of the primary coil part may be formed of a curved line having a coil shape.

The substrate of the primary coil portion may include a plurality of via electrodes.

The number of through-hole electrodes of the primary coil part may be the same as or greater than the number of substrates forming the primary coil part.

The coils of the secondary coil (secondary coil) section may be coated with triple insulation.

The transformer may further include a tertiary coil portion including one or more substrates forming a coil pattern.

The shield pattern may be connected to the coil pattern of the tertiary coil portion.

The number of coil turns formed by the coil pattern of the primary coil portion may be greater than the number of coil turns formed by the coils of the secondary coil portion.

According to another aspect of the present disclosure, the adapter may include a circuit board and a transformer mounted on the circuit board, wherein the transformer includes: a primary coil part including a plurality of substrates on which coil patterns are formed; a second coil part including an insulating a coil; and a shielding portion formed on the primary coil portion and including one or more substrates forming a shielding pattern.

The transformer may be mounted on a circuit board such that the plurality of substrates are arranged perpendicular to the plane of the circuit board.

The adapter may further include filter components mounted on the circuit board.

The filter part may be disposed on one corner of the circuit board, and the transformer may be disposed on the other corner of the circuit board opposite to one corner thereof.

The adapter may further include a capacitor disposed between the filter part and the transformer.

The adapter may further include a power output terminal disposed in parallel with the transformer in a length or width direction of the transformer.

Description of drawings

The above and other aspects, features and other advantages of the present disclosure will become more comprehensible from the following detailed description in conjunction with the accompanying drawings.

FIG. 1 is an exploded perspective view of a transformer according to an exemplary embodiment of the present disclosure;

2A to 2H are plan views sequentially showing a substrate forming a shield portion and a primary coil portion shown in FIG. 1;

3A and 3B are enlarged views of the shielding portion and the first substrate of the primary coil portion shown in FIGS. 2A and 2B;

4 to 8 are plan views showing other forms of the shielding portion shown in FIG. 2A;

9 is an exploded perspective view of a transformer according to another exemplary embodiment of the present disclosure;

10A to 10J are plan views sequentially showing substrates forming the first shielding portion, the tertiary coil portion, the primary coil portion and the second shielding portion shown in FIG. 9;

11A to 11J are plan views showing another form of the first shield portion, the tertiary coil portion, the primary coil portion, and the second shield portion shown in FIG. 9;

12A and 12B are enlarged views of the first shielding portion and the second shielding portion shown in FIGS. 11A and 11J;

FIG. 13 is a configuration diagram of an adapter according to an exemplary embodiment of the present disclosure;

FIG. 14 is a configuration diagram showing another form of adapter shown in FIG. 13; and

15 to 17 are graphs illustrating performance of a transformer according to an exemplary embodiment of the present disclosure.

Detailed ways

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. In the drawings, the shapes and dimensions of elements are exaggerated for clarity, and the same reference numerals will be used throughout to designate the same or like elements.

1 is an exploded perspective view of a transformer according to an exemplary embodiment of the present disclosure; FIGS. 2A to 2H are plan views sequentially showing substrates forming a shield portion and a primary coil portion shown in FIG. 1; FIG. 3A and FIG. 3B is an enlarged view of the first substrate of the shielding portion and the primary coil portion shown in FIGS. 2A and 2B; FIGS. 4 and 8 are plan views showing other forms of the shielding portion shown in FIG. 2A; FIG. 9 is An exploded perspective view of a transformer according to another exemplary embodiment of the present disclosure; FIGS. 10A to 10J are sequentially showing the formation of the first shield portion, the tertiary coil portion, the primary coil portion and the second shield shown in FIG. 9 A plan view of a part of the substrate; FIGS. 11A to 11J are plan views showing another form of the first shielding portion, the third coil portion, the primary coil portion, and the second shielding portion shown in FIG. 9; FIGS. 12A and 12B Is an enlarged view of the first shielding portion and the second shielding portion shown in FIGS. 11A and 11J ; FIG. 13 is a configuration diagram of an adapter according to an exemplary embodiment of the present disclosure; FIG. 14 is a diagram showing the configuration shown in FIG. 13 A configuration diagram of another form of adapter; and FIGS. 15 to 17 are graphs showing performance of a transformer according to an exemplary embodiment of the present disclosure.

(transformer)

A transformer according to an exemplary embodiment of the present disclosure will be described with reference to FIGS. 1 to 3B .

The transformer 100 according to the present exemplary embodiment may include a primary coil part 110 , a secondary coil part 120 , a shield part 140 and a core part 170 . In addition, the transformer 100 may further include an insulating coating (not shown) for satisfying safety standards. For example, the insulating coating may have a band shape surrounding the periphery of the core part 170 . Alternatively, the insulating coating may be an insulating film attached to the core portion 170 .

The transformer 100 configured as described above may be used to convert the voltage or current of an external power source into a voltage or current suitable for an electronic device. For example, the transformer 100 may be used in a portable electronic device or in an adapter for a portable electronic device.

Next, main components of the transformer 100 will be described.

The primary coil part 110 may be manufactured in a plate shape. For example, the primary coil part 110 may have a substrate shape. In detail, the primary coil part 110 may include a plurality of substrates forming a coil pattern. Here, the number of coil turns formed by the coil pattern of the primary coil part 110 may be different from the number of coil turns of the secondary coil part 120 . For example, the number of turns of the coil formed by the primary coil part 110 may be greater than the number of turns of the coil of the secondary coil part 120 . However, the opposite case to the above is also possible.

The secondary coil part 120 may have a bundle shape in which wiring formed of copper or another metal material is wound a predetermined number of times. Here, the wiring may be coated with an insulating material. For example, wires may be coated with triple insulation. However, the surface of the wiring is not necessarily coated with an insulating material. For example, in the case of winding a separate insulating tape between wirings, the insulating coating can be omitted. For reference, in the present exemplary embodiment, the secondary coil part 120 may be formed of a coil coated with triple insulating material. However, the secondary coil part 120 may be formed of a coil coated with a single insulating material or a double insulating material as long as safety standards are satisfied.

The shielding part 140 may be manufactured in a substrate shape. For example, the shield part 140 may be manufactured in the same or similar shape as that of the primary coil part 110 . The shield part 140 may be formed on the primary coil part 110 . For example, the shield part 140 may be integrally formed with the primary coil part 110 on one surface of the primary coil part 110 . Accordingly, the shield part 140 may be formed together with the primary coil part 110 in a process of manufacturing the primary coil part 110 .

The shield part 140 may be disposed between the primary coil part 110 and the secondary coil part 120 . In this case, an electromagnetic interference phenomenon occurring between the primary coil part 110 and the secondary coil part 120 can be reduced. In addition, as shown in FIG. 1 , the shielding part 140 may be disposed outside the primary coil part 110 . In this case, the disturbance phenomenon generated by the primary coil part 110 can be reduced. However, the shielding part 140 is not limited to being formed in the position according to the above example, but may also be provided on both surfaces of the primary coil part 110 or at the center of the primary coil part 110 .

The core part 170 may be formed of a material having a ferrite structure. However, the material of the core part 170 is not limited to ferrite, but may be changed to other materials. The core portion 170 may include outer legs that enclose (enclose) the outer sides of the primary coil portion 110 and the secondary coil portion 120 and penetrating through the center of at least one of the primary coil portion 110 and the secondary coil portion 120. center leg. However, the core part 170 is not limited to have the above-mentioned shape. For example, core portion 170 may have a shape in which only outer legs are included.

Next, the primary coil portion 110 and the shield portion 140 will be described in detail with reference to FIGS. 2A to 3B .

The shield part 140 and the primary coil part 110 may be manufactured in a substrate shape. For example, as shown in FIGS. 2A to 2H , the shielding part 140 and the primary coil part 110 may include substrates 142 and 1121 , 1122 , 1123 , 1124 , 1125 , 1126 and 1127 forming metal patterns, respectively. Here, all the substrates 142, 1121, 1122, 1123, 1124, 1125, 1126 and 1127 may have the same size. However, the substrate may have different dimensions as desired.

The shield part 140 and the primary coil part 110 may be integrally formed with each other. For example, the substrate 142 of the shielding part 140 and the substrates 1121 , 1122 , 1123 , 1124 , 1125 , 1126 and 1127 of the primary coil part 110 may be sequentially stacked to form one structure.

Next, the shield portion 140 and the primary coil portion 110 formed based on the substrate will be described in the order of stacking.

The shielding part 140 may include a substrate 142 , a shielding pattern 144 and a plurality of via electrodes 146 . The shield part 140 configured as described above may be formed on the primary coil part 110, thereby greatly reducing electromagnetic interference.

The substrate 142 may be formed of a prepreg material. However, the material of the substrate 140 is not limited to the prepreg material. For example, base plate 142 may also be formed from a material that is easily molded and machined.

The shield pattern 144 may have an open curved shape in which a portion is opened. For example, the shield pattern 144 may have a horseshoe or ring shape. However, the shield pattern 144 is not limited to have the above-mentioned shape. For example, the shape of the shield pattern 144 may be changed according to the coil pattern 1141 of the adjacent substrate (based on the first substrate 1101 in FIG. 2B ) of the primary coil part 110 . For example, the shield pattern 144 may have a shape that can accommodate the entire coil pattern 1141 of the first substrate 1101 .

The shield pattern 144 may have a predetermined width Ws. Here, the width Ws may be substantially the same as the width W1 of the coil pattern 1141 of the first substrate 1101 . However, the width Ws is not necessarily the same as the width W1 of the coil pattern 1141, but may be larger or smaller than the width W1 (see FIGS. 3A and 3B ) as needed.

The shield pattern 144 may have a predetermined area As. Here, the area As may be larger than the area A1 of the coil pattern 1141 . However, the area As of the shield pattern 144 is not necessarily larger than the area A1 of the coil pattern 1141. For example, the area As may be increased or decreased as long as the shielding performance of the shielding member 140 is ensured.

The shield pattern 144 may be connected to the via electrode 146 . For example, one end (start portion) of the shield pattern 144 may be connected to a ground terminal through the via electrode 146 . In addition, the other end (end portion) of the shielding pattern 144 may not be connected to any electrode (ie, the other end of the shielding pattern 144 may be open). This connection structure of the shielding pattern 144 may allow the electromagnetic wave shielding function to be smoothly performed without affecting the characteristics of the transformer.

Via electrodes 146 may be formed on the substrate 142 . For example, a plurality of via electrodes 146 may be formed inside and outside of the shield pattern 144 . In this exemplary embodiment, the via electrodes 146 may include a via electrode 1462 for a first pattern, a via electrode 1464 for a second pattern, and a via electrode 1466 for an output. Here, the via electrode 1462 for the first pattern may be formed inside the shielding pattern, and the via electrode 1464 for the second pattern may be formed outside the shielding pattern 144 . In addition, a via electrode 1466 for output may be formed at an edge portion of the substrate 142 .

The primary coil sections 110: 1101, 1102, 1103, 1104, 1105, 1106, and 1107 may include a plurality of substrates. For example, the first substrate 1121 forming the first coil pattern 1141, the second substrate 1122 forming the second coil pattern 1142, the third substrate 1123 forming the third coil pattern 1143, and the substrate 1144 forming the fourth coil pattern 1144 may be sequentially stacked. The fourth substrate 1124, the fifth substrate 1125 forming the fifth coil pattern 1145, the sixth substrate 1126 forming the sixth coil pattern 1146, and the seventh substrate 1127 forming the seventh coil pattern 1147 are coupled to each other to form a primary coil. Section 110.

The substrates 1121, 1122, 1123, 1124, 1125, 1126, and 1127 may have coil patterns 1141, 1142, 1143, 1144, 1145, 1146, and 1147 respectively formed thereon. For example, the substrates 1121, 1122, 1123, 1124, 1125, 1126, and 1127 may have coil patterns 1141, 1142, 1143, 1144, 1145, 1146, and 1147 respectively formed thereon, wherein the coil patterns may have a coil shape. Here, the number of turns of all the coil patterns 1141, 1142, 1143, 1144, 1145, 1146, and 1147 may be the same as each other. However, the numbers of turns of the coil patterns 1141, 1142, 1143, 1144, 1145, 1146, and 1147 are not necessarily the same as each other. For example, the number of turns of at least one of the coil patterns 1141 , 1142 , 1143 , 1144 , 1145 , 1146 and 1147 may be adjusted in order to make the number of turns of the primary coil part 110 conform to a set value.

In addition, the substrates 1121, 1122, 1123, 1124, 1125, 1126, and 1127 may have via electrodes 1161, 1162, 1163, 1164, 1165, 1166, and 1167 respectively formed therein. For example, the substrates 1121, 1122, 1123, 1124, 1125, 1126, and 1127 may have via electrodes 1171, 1172, 1173, 1174, 1175, 1176, and 1177 formed therein for the first pattern, for the second pattern, respectively. Patterned via electrodes 1181, 1182, 1183, 1184, 1185, 1186, and 1187, via electrodes 1191, 1192, 1193, 1194, 1195, 1196, and 1197 for output. The corresponding via electrodes 1161 , 1162 , 1163 , 1164 , 1165 , 1166 and 1167 may be formed to penetrate the substrates 1121 , 1122 , 1123 , 1124 , 1125 , 1126 and 1127 , respectively.

Accordingly, the coil patterns 1141, 1142, 1143, 1144, 1145, 1146, and 1147 formed on the different substrates 1121, 1122, 1123, 1124, 1125, 1126, and 1127 may pass through the via electrodes 1161, 1162, 1163, 1164, respectively. 1165, 1166 and 1167 are connected to each other. For example, the corresponding coil patterns 1141 , 1142 , 1143 , 1144 , 1145 , 1146 and 1147 may be connected to each other like a curved line through via electrodes 1161 , 1162 , 1163 , 1164 , 1165 , 1166 and 1167 . In detail, one ends of the corresponding coil patterns 1141, 1142, 1143, 1144, 1145, 1146, and 1147 may pass through the via electrodes 1171, 1172, 1173, 1174, 1175, 1176, 1177, 1181, 1182, 1183, 1184, 1185, 1186 and 1187 are connected to each other.

Meanwhile, the via electrodes 1171, 1172, 1173, 1174, 1175, 1176, 1177, 1181, 1182, 1183, 1184, The number of 1185 , 1186 and 1187 may be equal to or greater than the number of substrates 1121 , 1122 , 1123 , 1124 , 1125 , 1126 and 1127 forming the primary coil part 110 . For example, when the primary coil part 110 includes seven substrates, the number of via electrodes for patterns formed in the corresponding electrodes may be 7 or more. However, the number of via electrodes 1191, 1192, 1193, 1194, 1195, 1196, and 1197 for output may be arbitrarily selected within a range of 2 or more.

Next, other forms of the shielding portion will be described with reference to FIGS. 4 to 8 .

The shield part 140 according to one form may have a structure in which the shield pattern 144 is connected to the via electrode 146 (see FIG. 4 ). For example, the shield pattern 144 may be connected to a ground terminal of the circuit board through the via electrode 146 . For reference, although the case in which the shield pattern 144 is connected to the via electrode 1464 for the secondary pattern has been shown in FIG. 4 , however, the shield pattern 144 may also be connected to the via electrode 1462 for the first pattern. Or via electrode 1466 for output.

The shielding part 140 according to another form may have a shielding pattern 144 (see FIG. 5 ) having an extended area. For example, the shield pattern 144 may cover a large area of the substrate 142 .

The shield part 140 according to another form may have a shield pattern 144 (see FIG. 6 ) having a coil shape. For example, the shield pattern 144 may have a shape similar to that of the coil patterns 1141 , 1142 , 1143 , 1144 , 1145 , 1146 , and 1147 of the primary coil part 110 . That is, the shield pattern 144 may form a shape in which a single curved line is wound one or more times.

The shielding part 140 according to another form may have a shielding pattern 144 (see FIG. 7 ) formed of a plurality of curved lines. For example, the shield pattern 144 may be formed of two curved lines. That is, the shield pattern 144 may have a shape in which one curve is divided into a plurality of curves.

The transformer 100 configured as described above is advantageous in that a manufacturing process or a core assembly process after manufacturing a multilayer printed circuit board (MLB) is simplified. Furthermore, in the transformer 100 according to the present exemplary embodiment, characteristic deviation can be reduced as compared with a winding type transformer. Furthermore, in the transformer 100 according to the present exemplary embodiment, stable characteristic values can be maintained by the shield portion 140 , so that electromagnetic interference (EMI) characteristics, which are a problem of plate-shaped transformers, can be improved.

Next, a transformer according to another exemplary embodiment of the present disclosure will be described with reference to FIGS. 9 to 12B . For reference, in the following description, the same components as those of the transformer according to the above-described exemplary embodiment of the present disclosure will be denoted by the same reference numerals, and descriptions thereof will be omitted.

The transformer 100 according to the present exemplary embodiment may be different from the transformer 100 according to the above-described exemplary embodiments of the present disclosure in the configuration of the shielding portion. For example, the transformer 100 according to the present exemplary embodiment may include a plurality of shielding parts 150 and 160 . In detail, the shielding part may include a first shielding part 150 and a second shielding part 160 . Here, the first shielding part 150 may be formed on one surface of the primary coil part 110 , and the secondary shielding part 160 may be formed on the other surface of the primary coil part 110 .

In addition, the transformer 100 according to the present exemplary embodiment may further include a tertiary coil part 130 . For example, the tertiary coil part 130 may be formed between the first shield part 150 and the primary coil part 110 . However, the tertiary coil part 130 is not limited to being formed in the above-mentioned position. For example, the tertiary coil part 130 may be formed between the primary coil part 110 and the secondary coil part 160 . Alternatively, the tertiary coil part 130 may be formed outside the first shield part 150 or outside the second shield part 160 .

The tertiary coil part 130 may include a substrate 132 , a coil pattern 134 , and via electrodes 136 : 1362 , 1364 and 1366 . That is, the tertiary coil part 130 may have a shape substantially similar to that of the primary coil part 110 . The tertiary coil part 130 configured as described above may be integrally formed with the first shield part 150 , the primary coil parts 110 : 1101 , 1102 , 1103 , 1104 , 1105 , 1106 , and 1107 , and the second shield part 160 .

The tertiary coil part 130 configured as described above may be used for the purpose of obtaining an induced electromotive force (ie, the purpose of VCC) from the power supplied from the primary coil part 110 or the secondary coil part 120 . For example, the tertiary coil part 130 may supply the electric power obtained from the primary coil part 110 as a backup power source of electronic equipment mounted with the transformer according to the present exemplary embodiment. For example, the electronic device may be an adapter for a portable electronic device.

Next, other forms of the shielding portions 150 and 160 will be described with reference to FIGS. 11A , 11J, 12A, and 12B.

The first shielding part 150 and the second shielding part 160 may be connected to each other through via electrodes 156 , 136 , 1161 , 1162 , 1163 , 1164 , 1165 , 1166 , 1167 and 166 . For example, the first shielding part 150 may be connected to the via electrode 1562 , and the second shielding part 160 may be connected to the via electrode 1662 . Here, since the via electrodes 1562 and 1662 are positioned to overlap each other in the stacked state, the first shielding part 150 and the second shielding part 160 may be electrically connected to each other.

Meanwhile, the first shielding part 150 and the second shielding part 160 may have different shapes. For example, the shielding pattern 154 of the first shielding part 150 may have a curved shape in which one side is opened, and the shielding pattern 164 of the second shielding part 160 may have a coil shape in which it is wound two or more times. However, the shielding pattern 154 of the first shielding part 150 and the shielding pattern 164 of the second shielding pattern 160 are not necessarily different from each other. For example, the shielding pattern 154 of the first shielding part 150 and the shielding pattern 164 of the second shielding pattern 160 may have the same shape.

The shielding pattern 154 of the first shielding part 150 and the shielding pattern 164 of the second shielding pattern 160 may be connected to each other. For example, one end of the shield pattern 154 and one end of the shield pattern 164 may be connected to each other through via electrodes 1562 and 1662 . In addition, the other end of the shielding pattern 154 and the other end of the shielding pattern 164 may be opened. The shielding parts 150 and 160 having the above-described shielding patterns may smoothly perform a shielding function without affecting product characteristics of the transformer.

Therefore, in the transformer 100 according to the present exemplary embodiment, the same or similar characteristics as those of EMI shielding using wiring may be introduced through the two shielding parts 150 and 160 . In addition, the transformer 100 according to the present exemplary embodiment may be advantageous in simplifying a manufacturing process or a core assembly process after manufacturing an MLB. In addition, the transformer 100 according to the present exemplary embodiment may have a characteristic deviation smaller than that of a winding type transformer, so that a stable characteristic value may be maintained. Therefore, in the transformer 100 according to the present exemplary embodiment, it is possible to effectively improve EMI characteristics, which are a problem of plate-shaped transformers.

(adapter)

Next, an adapter according to an exemplary embodiment of the present disclosure will be described with reference to FIGS. 13 and 14 . For example, a transformer described below may be any of the above-mentioned transformers, and a detailed description thereof will be omitted.

The adapter 10 according to the present exemplary embodiment may include a transformer 100 , a circuit board 200 , a filter part 300 , a capacitor 400 and a power output terminal 500 .

The circuit board 200 may be installed in the adapter 10 , for example, the circuit board 200 may be installed in an inner space formed by a case (not shown) of the adapter 10 . In addition, the circuit board 200 may be integrally formed with the housing of the adapter 10 . For example, circuit board 200 may form part of the housing.

The circuit board 200 may have circuit patterns formed thereon. For example, the circuit board 200 may have circuit patterns formed thereon to connect the transformer 100, the filter part 300, the capacitor 400, and the power output terminal 500 to each other. In addition, the circuit board 200 may have other circuit patterns formed thereon to connect other electronic components (eg, resistors, etc.) to each other, in addition to the above-mentioned electronic components.

The transformer 100 may be mounted parallel to the plane of the circuit board 200 . For example, the transformer 100 may be mounted on the circuit board 200 such that the substrates 1121, 1122, 1123, 1124, 1125, 1126 and 1127 of the primary coil portion 110 thereof are arranged parallel to the circuit board 200 (see FIG. 13).

Unlike this, the transformer 100 may be mounted perpendicular to the plane of the circuit board 200 . For example, the transformer 100 may be mounted on the circuit board 200 such that the substrates 1121, 1122, 1123, 1124, 1125, 1126, and 1127 of the primary coil portion 100 thereof are arranged perpendicular to the plane of the circuit board 200 (see FIG. 14 ).

The transformer 100 may be disposed on a corner of the circuit board 200 . In addition, the transformer 100 may be disposed in a direction diagonal to the filter part 300 . For example, the transformer 100 may be disposed on one corner of the circuit board 200, and the filter part 300 may be disposed on the other corner of the circuit board 200 opposite to one corner thereof (see FIG. 14 ). Such an arrangement structure may be advantageous in radiating heat generated from the coil components (transformer 100 and filter component 300 ) to the periphery.

Also, a capacitor 400 may be disposed between the transformer 100 and the filter part 300 . This arrangement structure is advantageous in effectively utilizing the space between the transformer 100 and the filter part 300 .

In addition, the transformer 100 may be disposed on the same line as that of the power output terminal 500 on the circuit board 200 . Such an arrangement structure may be advantageous in optimizing the circuit pattern of the circuit board 200 .

The adapter 10 of the present exemplary embodiment configured as described above may be advantageous in maintaining the safety standard of the transformer 100 . In addition, the adapter 10 according to the present exemplary embodiment may be advantageous in miniaturizing a product and improving electromagnetic wave shielding characteristics.

As shown in FIGS. 15 to 17 , the adapter 10 according to the present exemplary embodiment sufficiently shows excellent EMI characteristics. In particular, in the case where the shield portions 150 and 160 of the transformer 100 are connected to the core, more excellent EMI characteristics are shown. Furthermore, in the case where a snubber circuit is provided in the adapter 10, the phenomenon of electric leakage is reduced. For reference, in the present exemplary embodiment, the snubber circuit may include a chip resistor and a multilayer ceramic capacitor (MLCC).

As described above, according to the exemplary embodiments of the present disclosure, it is possible to provide a transformer capable of being easily miniaturized.

Also, according to the exemplary embodiment of the present disclosure, an adapter capable of miniaturization can be provided.

While exemplary embodiments have been shown and described above, it will be apparent to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the present disclosure as defined in the appended claims. .

Claims (17)

1. a transformer, is characterized in that, comprising:

Primary winding part, comprises multilager base plate, and stacking in described multilager base plate have multiple substrates with coil pattern;

Secondary coil part, to have at least one in the coil turn being different from described primary winding part, the upper surface being positioned at described multilager base plate and lower surface and to comprise wire and apply the insulating material of described wire; And

Masked segment, to be arranged in described primary winding part and to comprise at least one substrate, at least one substrate described is provided with shielding pattern.

2. transformer according to claim 1, is characterized in that, the area of described shielding pattern is equal to or greater than the area of the described coil pattern of the described primary winding part being adjacent to described shielding pattern.

3. transformer according to claim 1, is characterized in that, the width forming the sweep of described shielding pattern is different from the width of the sweep of the described coil pattern of the described primary winding part being adjacent to described shielding pattern.

4. transformer according to claim 1, is characterized in that, described shielding pattern has the open curve shape that a part is opened.

5. transformer according to claim 1, is characterized in that, described shielding pattern is arranged to the edge of the described substrate being parallel to described masked segment.

6. transformer according to claim 1, is characterized in that, described shielding pattern is formed by the single curve with coil shape.

7. transformer according to claim 1, is characterized in that, described shielding pattern is formed by many curves with coil shape.

8. transformer according to claim 1, is characterized in that, described shielding pattern is connected to the described coil pattern of described primary winding part.

9. transformer according to claim 1, is characterized in that, described shielding pattern is connected to core.

10. transformer according to claim 1, is characterized in that, described masked segment comprises:

Be arranged in the first masked segment on the side of described primary winding part; And

Be arranged in the secondary shielding part on the opposite side of described primary winding part.

11. transformers according to claim 10, is characterized in that, described first masked segment is connected to described secondary shielding part by the through hole electrode penetrating described primary winding part.

12. 1 kinds of adapters, is characterized in that, comprising:

Circuit board; And

Transformer, is arranged on described circuit board,

Wherein, described transformer comprises:

Primary winding part, comprises the multiple substrates it being formed with coil pattern;

Secondary coil part, comprises insulated coil; And

Masked segment, to be formed in described primary winding part and to comprise one or more substrate, described one or more substrate is formed with shielding pattern.

13. adapters according to claim 12, is characterized in that, described transformer is arranged on described circuit board, thus described multiple substrate is arranged perpendicular to the plane of described circuit board.

14. adapters according to claim 12, is characterized in that, comprise the filter part be arranged on described circuit board further.

15. adapters according to claim 14, is characterized in that, described filter part is arranged on a turning of described circuit board; And

Described transformer is arranged on another turning relative with a turning of described circuit board of described circuit board.

16. adapters according to claim 14, is characterized in that, comprise the capacitor be arranged between described filter part and described transformer further.

17. adapters according to claim 12, is characterized in that, comprise further be provided in described transformer length or Width on the power output terminal parallel with described transformer.