KR20130106570A - Transformer and power module using the same - Google Patents
Transformer and power module using the same Download PDFInfo
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- KR20130106570A KR20130106570A KR1020120028213A KR20120028213A KR20130106570A KR 20130106570 A KR20130106570 A KR 20130106570A KR 1020120028213 A KR1020120028213 A KR 1020120028213A KR 20120028213 A KR20120028213 A KR 20120028213A KR 20130106570 A KR20130106570 A KR 20130106570A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/343—Preventing or reducing surge voltages; oscillations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The present invention relates to a transformer capable of responding to a higher surge voltage and a power module having the same, comprising: a bobbin having a plurality of winding spaces formed on an outer circumferential surface of a tubular body portion; And a plurality of coils stacked and wound in the plurality of winding spaces, wherein at least one of the plurality of coils includes a winding in which a first coil turn firstly wound and a last coil turn finally wound in the winding space are different from each other. It can be wound in space.
Description
The present invention relates to a transformer and a power module having the same, and more particularly, to a transformer capable of responding to a surge voltage and a power module having the same.
Various kinds of power sources are required for various electronic devices such as TV (Television), monitor (monitor), PC (personal computer), OA (office automation) Accordingly, such an electronic apparatus generally has a power supply unit for converting an AC power supplied from the outside into a power required for each electronic appliances.
In recent years, a power supply using a switching mode among the power supply (for example, a Switch Mode Power Supply (SMPS)) is mainly used, and this SMPS basically has a switching transformer.
In general, a switching transformer converts an 85-265V AC power supply into a 3-30V DC power supply with high frequency oscillation of 25-100KHz. Therefore, the size of the core and bobbin can be significantly reduced compared to a general transformer which converts 85 to 265 V AC power into 3 to 30 V AC power with 50 to 60 Hz frequency oscillation. Since low-voltage, low-current DC power supplies can be stably supplied to electronic applications, they have been widely used in electronic applications that have recently been miniaturized.
On the other hand, as the types of home appliances, business, and portable electronic devices are diversified and the penetration rate is increased, the damage caused by surges is rapidly increasing. Surge refers to transient waveforms such as currents and voltages that are transmitted along a line or circuit and have rapidly increasing characteristics. The surge phenomenon may be caused by a sudden voltage increase and opening and closing of the inductor inside the circuit, and may also be caused by a natural phenomenon such as a direct lightning strike, an indirect lightning strike, an induced lightning strike, or an air discharge.
In particular, in recent years, as the degree of integration of circuits increases, the width of circuit lines becomes narrower, and as the resistance of low-power and high-conductivity materials are used for low-power operation, the peak of the short circuit phenomenon is lowered, thereby weakening the overall system to breakdown voltage. Are becoming more vulnerable. Repeated weak surges can lead to deterioration of the device, resulting in device destruction, and strong surges can destroy the device in only one occurrence. In addition, when a surge phenomenon occurring in a specific circuit component is transmitted to another circuit component or system, etc., in an extreme case, the entire system may be serially destroyed.
Therefore, there is a demand for a structure that can minimize the damage of surge in a transformer.
An object of the present invention is to provide a transformer capable of responding to a surge voltage and a power module having the same.
Another object of the present invention is to provide a transformer capable of responding to a surge voltage without adding a separate component and a power module having the same.
Transformer according to an embodiment of the present invention, the bobbin is formed a plurality of winding spaces on the outer peripheral surface of the tubular body portion; And a plurality of coils stacked and wound in the plurality of winding spaces, wherein at least one of the plurality of coils includes a winding in which a first coil turn firstly wound and a last coil turn finally wound in the winding space are different from each other. It can be wound in space.
In the present embodiment, the at least one coil may be wound while forming at least two winding layers on the body portion.
In this embodiment, the winding space may include a lower winding space and an upper winding space.
In the present embodiment, the at least one coil may be wound around the other winding space after being wound while forming at least two winding layers in any one of the winding spaces.
In the present embodiment, the bobbin may be divided into a plurality of winding spaces by at least one partition wall formed on an outer circumferential surface of the body portion, and each of the divided winding spaces may have the same width.
In the present embodiment, the partition wall has at least one carry-over groove, and the coils may be wound in each of the winding spaces divided by the carry-over of the partition wall through the carry-over groove.
In the present embodiment, the bobbin is formed in one end of the winding space extending in the outer diameter direction and comprises a terminal fastening portion for fastening a plurality of external connection terminals at the end, the terminal fastening portion has at least one lead groove The coils may be drawn out to the lower portion of the terminal fastening portion through the drawing grooves.
In the present embodiment, both of the at least one coil may be drawn out of the winding space through the drawing groove.
In the present embodiment, the coil may include a primary coil and a secondary coil, and the at least one coil may be a primary coil.
In the present embodiment, at least one of the primary coil or the secondary coil may be a multiple insulation coil.
In addition, the transformer according to an embodiment of the present invention, the winding portion in which at least one partition wall is formed; And a coil in which at least one primary coil and at least one secondary coil are stacked and wound in the winding space, wherein at least one of the primary coils is the first coil turn and the last winding of the first winding part. The final coil turns wound to may be spaced apart by the partition wall.
In addition, the transformer according to an embodiment of the present invention, the bobbin is formed a plurality of winding spaces on the outer peripheral surface of the tubular body portion; And a coil wound in the winding space.
At least one of the coils may be preferentially wound while forming at least two winding layers in one of the winding spaces, and then wound in the other winding space.
In addition, the power module according to the embodiment of the present invention includes a winding unit in which at least one partition wall is formed and at least one primary coil and at least one secondary coil are stacked and wound in the winding space. At least one of the primary coils may include: a transformer in which the first coil turn firstly wound up and the last coil turn finally wound up are separated by the partition wall; And a substrate on which the transformer is mounted.
In the transformer according to the present invention, the winding space of the bobbin is uniformly divided into a plurality, and each individual coil is uniformly distributed and wound in the divided space. In addition, each individual coil is wound in a stacked form. Accordingly, the individual coils may be prevented from being wound toward one side or wound ununiformly spaced apart in the winding part, thus reducing the leakage inductance generated as the coils are irregularly wound.
In addition, the transformer according to the present invention can cope with a higher surge voltage with only a new winding structure without adding additional additional components. Accordingly, it is possible to provide a transformer that can cope with a higher surge voltage while manufacturing a transformer in a similar manner as in the prior art without adding an additional cost or manufacturing process.
In addition, the transformer according to the present invention may use multiple insulated wires for at least one of the primary coil and the secondary coil. In this case, the insulation between the primary coil and the secondary coil can be ensured by the high insulation of the multiple insulated wire without a separate insulation member (for example, an insulation tape).
Therefore, the insulation tape, which is conventionally interposed between the primary coil and the secondary coil, may be omitted, and all the processes of attaching the insulation tape may be omitted, thereby reducing manufacturing cost and manufacturing time.
1 is a perspective view schematically showing a transformer according to an embodiment of the present invention.
FIG. 2A is a perspective view schematically showing the bobbin of the transformer shown in FIG. 1. FIG.
FIG. 2B is a perspective view schematically showing the bottom surface of the bobbin shown in FIG. 2A; FIG.
3A is a bottom view of the bottom surface of the bobbin shown in FIG. 2A;
Figure 3b is a bottom view showing a state in which the coil is wound around the bobbin shown in Figure 3a.
4 is a cross-sectional view taken along line AA ′ of FIG. 3A;
5A is a cross-sectional view taken along line BB ′ of FIG. 3B.
FIG. 5B is a cross sectional view along B′-B ′ of FIG. 3B; FIG.
5C is a cross-sectional view taken along line B′-B ′ ″ of FIG. 3B.
6A to 8B are partial cross-sectional views for illustrating the winding structure of the transformer according to the present embodiment.
9 is an exploded perspective view schematically showing a display device according to an embodiment of the present invention.
Prior to the detailed description of the present invention, the terms or words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning, and the inventor may designate his own invention in the best way It should be construed in accordance with the technical idea of the present invention based on the principle that it can be appropriately defined as a concept of a term to describe it. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the elements in the accompanying drawings are exaggerated, omitted, or schematically shown, and the size of each element does not entirely reflect the actual size.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 is a perspective view schematically showing a transformer according to an embodiment of the present invention, Figure 2a is a perspective view schematically showing a bobbin of the transformer shown in Figure 1 and Figure 2b schematically shows a lower surface of the bobbin shown in Figure 2a It is a perspective view showing.
3A is a bottom view illustrating the bottom surface of the bobbin illustrated in FIG. 2A, and FIG. 3B is a bottom view illustrating a coil wound around the bobbin illustrated in FIG. 3A. 4 is a cross-sectional view taken along line AA ′ of FIG. 3A.
1 to 4, the
The
The winding
A through
The winding
In addition, in the
The carry-
Two carry-over
On the other hand, in the
However, in the
Therefore, in order to prevent such a problem from occurring, the
In the present embodiment, the case where the first carry-over
The
Therefore, when the width of the entire winding
The
The
The
In addition, the space formed between the outer circumferential surface of the
The
However, the present invention is not limited thereto and may be formed to protrude in the lower direction of the
Meanwhile, referring to the drawings, since the
The
In addition, the
As described above, in the
To this end, the
In addition, the
The drawing
In addition, the width of the
In particular, the
Like the carry-out
In other words. In the
Accordingly, the two drawing
Meanwhile, in the present embodiment, the case where the drawing
The catching
In addition, the locking
The locking
In addition, in the locking
On the other hand, by the
In the case of the transformer according to the prior art, the lead wire of the coil is generally configured to be drawn outward along the inner wall of the space in which the coil is wound, and thus is configured to be in contact with the wound coil and the lead wire of the coil.
As a result, the coil was wound to form a bend in contact with the lead wire, and the bending of the coil, that is, the uneven winding, resulted in an increase in leakage inductance.
However, in the
Therefore, the
The locking
As shown in FIG. 2B, the latching
Due to the locking
The guide protrusions 27 may be formed in a form in which a plurality of side protrusions protrude side by side on one surface of the
The
The
The lead wires L drawn out to the outside of the
The
That is, according to the configuration of the
A plurality of
That is, the
In addition, the
The
The
The
The
The
The core 40 may be formed of Mn-Zn-based ferrite having high permeability, low loss, high saturation magnetic flux density, stability, and low production cost compared to other materials. However, the shape and material of the core 40 are not limited in the embodiment of the present invention.
Although not shown, an insulating tape may be interposed between the
The insulating tape may be interposed to correspond to all inner surfaces of the core 40 facing the
The
FIG. 5A is a cross-sectional view taken along BB ′ of FIG. 3B, FIG. 5B is a cross-sectional view taken along B′-B ′ of FIG. 3B, and FIG. 5C is a cross-sectional view taken along B′-B ′ ′ of FIG. 3B.
5A through 5C, the
Referring to FIG. 5A, the
In addition, when the
As such, the
On the other hand, the
The
Like the
More specifically, in the present embodiment, the case where the
In addition, each of the coils Ns1, Ns2, Ns3, and Ns4 of the
Each of the individual coils Np1 to Ns4 according to this embodiment is wound so as to be distributed substantially uniformly in the
In more detail, each of the coils Np1 to Ns4 is wound in the same number in the upper winding
In this case, when the number of windings of each of the coils Np1 to Ns4 is set to an odd number, the coils Np1 to Ns4 may be wound at a difference in the number of turns at a rate of 10% or less of the total number of windings.
This configuration is to minimize the occurrence of leakage inductance in the
In general, when the coil is wound around the winding of the bobbin, when the coil is not wound evenly as a whole, but is coiled in one direction, or is unevenly disposed and wound, this causes a problem that the leakage inductance is increased throughout the transformer. This problem may be aggravated as the space of the winding part is large.
Therefore, the
On the other hand, for example, when the total number of windings of Ns1 is 18 times, the Ns1 is wound so as to be uniformly distributed and arranged nine times in the upper winding
In addition, when the number of turns is set to an odd number (for example, 50 times), the winding is arranged 23 times in the upper winding
Meanwhile, referring to the drawings, in the present embodiment, Ns1 is not tightly wound, but is wound 8 times in the first layer and 10 times in the second layer. This is a winding structure derived as both ends of the Ns1 drawn in and drawn out of the winding
That is, as the coil (for example, Ns1) is wound in this way, even if the number of windings of the coil is smaller than that of the winding
In the present embodiment, for the convenience of description, the above-described winding structure is shown for Ns1 only, but the present invention is not limited thereto and may be easily applied to other coils.
As described above, the
As described above, in the
In addition, in the
Accordingly, each of the coils Np1 to Ns4 according to the present embodiment is not wound in one layer. That is, since the winding layer to be drawn in and wound out and the winding layer to be drawn out must be included, it is wound to form at least two winding layers. In addition, the
In addition, the
6A through 8B are partial cross-sectional views illustrating a winding structure of a transformer according to the present embodiment. For convenience of description, only the coil Np2 and the coil Ns1 are partially enlarged in the drawing shown in FIG. 5B.
Here, in Figs. 6A, 7A, and 8A, the numbers described in the cross section of each coil refer to the order in which the coils are wound in the winding
Hereinafter, for convenience of description, each part of the coil will be referred to according to the winding order. For example, in the case of the third coil turn, the third turn refers to the turn of the coil wound on the winding part 12 (that is, '3' is described in the drawing).
Referring first to FIGS. 6A and 6B, coil turns forming a layer W1 (hereinafter, referred to as a first winding layer) first wound in each individual winding
As described above, when the coil is wound while forming a plurality of winding layers W1 and W2, when voltage is applied to the transformer, coil turns adjacently wound (for example,
In particular, in the case of winding the coil Np2 with the structure shown in FIGS. 6A and 6B, the coil turns 20 are stacked and wound outside the coil turns 1. In this case, the two coil turns are arranged at very close distances and the potential difference between them becomes very large. Therefore, the capacitance generated between
In this structure, when the surge voltage is applied to the coil Np2 while the coil Np2 is wound, a potential difference corresponding to the surge voltage is generated between the
To cope with this, the transformer according to the present embodiment may wind the coil in the form shown in FIGS. 7A to 8B. That is, the coil may be wound such that the first coil turn (hereinafter referred to as coil turn 1) and the final coil turn (hereinafter referred to as coil turn 20) are respectively disposed in different winding
Accordingly, in the transformer according to the present embodiment, as shown in FIGS. 7A and 7B, when the first coil turn, which is the first coil turn, is wound in the lower winding
Likewise, when the first coil turn is wound in the upper winding
Due to this winding structure, the transformer shown in FIGS. 7A to 8B is spaced apart from the initial coil turn and the final coil turn by the
In addition, as described above, the coil Np2 according to the present embodiment is wound in two or more layers. Therefore, in addition to the initial coil turn and the final coil turn, the coil turns of the first winding layer W1 and the coil turns of the second winding layer W2 disposed adjacent to each other are also wound so as to form a small potential difference therebetween for insulation. It is preferable.
In the case of the winding structure shown in FIGS. 6A and 6B, the potential difference between the coil turns increases as the closer to the
In order to solve this problem, the transformer according to the present embodiment winds the coil in two separate layers W1 and W2 in one
More specifically, as illustrated in FIGS. 7A and 7B, the coil Np2 may be first introduced into the lower winding
When the coil Np2 is all wound in the lower winding
When all the coils are wound in the upper winding
In this case, the
Also, referring to FIGS. 8A and 8B, the coil Np2 is carried over to the upper winding
When all of the coils Np2 are preferentially wound in the upper winding
When all the coils are wound in the lower winding
As described above, as the coil Np2 according to the present embodiment is wound in the winding
That is, since the coil Np2 is wound so that the first coil turn and the final coil turn are disposed in different winding
Therefore, when the surge voltage is applied, the insulation can be prevented from being broken between the first coil turn and the last coil turn, which have the highest possibility of dielectric breakdown.
In addition, the coil winding structure of the transformer according to the present embodiment is wound between the coil turns of the first winding layer (W1) and the coil turns of the second winding layer (W2) and adjacently in each of the winding layers (W1, W2). The potential difference between the coil turns can be minimized.
Therefore, the capacitance generated between the respective coil turns can be reduced, so that the breakdown of the insulation can be minimized even when a high-voltage surge voltage is applied.
Meanwhile, in the case of winding the coil in the structure shown in FIGS. 7A and 8A, the coil Np2 is wound in a somewhat complicated structure compared with the winding structure of the coil Np2 shown in FIG. 6A, and thus, the coil Ns1 stacked on the outside of the coil Np2. Is not evenly wound compared to the winding structure of FIG. 6a.
That is, when the coil is wound in the structure shown in FIGS. 7A and 8A, the winding coupling degree between the primary coil Np2 and the secondary coil Ns1 is lower than that shown in FIG. 6A.
As a result, the leakage inductance generated between the primary coil and the secondary coil is also increased compared to the structure shown in FIG. 6A. As the leakage inductance is increased as described above, the transformer according to the present embodiment is such that surge current / voltage applied to the primary side flows into the secondary side, or surge current / voltage applied to the secondary side flows into the primary side. A suppressing effect can also be obtained.
The result of actually measuring the corresponding surge voltage in the transformer according to the present embodiment is shown in Table 1 below.
When winding the coil Np2 with the winding structure shown in Fig. 6A, the leakage inductance was 5.1 uH and the surge voltage was measured to withstand up to 6 kV. On the other hand, when winding the coil Np2 with the winding structure shown in Figure 7a under the same conditions, the leakage inductance was found to be 10.5uH, the surge voltage was measured to withstand up to 8.5kV.
As described above, the transformer according to the present embodiment can cope with a higher surge voltage with only a new winding structure without adding additional additional components. Accordingly, the transformer can be manufactured by a method similar to the conventional method without additional cost or manufacturing process, and at the same time, a transformer capable of responding to a higher surge voltage can be provided.
On the other hand, the coils (Np1 ~ Ns4) according to the present embodiment may be used a conventional insulated coil (for example, polyurethane wire, polyurethane wire, etc.), twisted wire shape formed by twisting the wire of several strands Coils (eg, Litz wire, Litz wire, etc.) may be used. In addition, it can be selectively used as needed, such as using a highly insulating multiple insulated coil (eg, Triple Insulated Wire).
In particular, in the
However, the present invention is not limited thereto, and an insulating member such as an insulating tape may be interposed between each individual coil or between each winding layer as necessary.
9 is an exploded perspective view schematically illustrating a display device according to an exemplary embodiment of the present invention.
Referring to FIG. 9, the
The
The
The
In particular, in the
However, as described above, the
The
In addition, the
Accordingly, in the
Accordingly, the
Thus, even if the
In the transformer according to the present invention configured as described above, the winding space of the bobbin is uniformly divided into a plurality, and each of the individual coils is uniformly distributed and wound in the divided space. In addition, each individual coil is wound in a stacked form. This prevents the individual coils from being wound toward one side or wound ununiformly spaced apart in the winding.
In addition, the transformer according to the present invention can cope with a higher surge voltage with only a new winding structure without adding additional additional components. Accordingly, it is possible to provide a transformer that can cope with a higher surge voltage while manufacturing a transformer in a similar manner as in the prior art without adding an additional cost or manufacturing process.
In addition, the transformer according to the present invention may use multiple insulated wires for at least one of the primary coil and the secondary coil. In this case, the insulation between the primary coil and the secondary coil can be ensured by the high insulation of the multiple insulated wire without a separate insulation member (for example, an insulation tape).
Therefore, the insulation tape, which is conventionally interposed between the primary coil and the secondary coil, may be omitted, and all the processes of attaching the insulation tape may be omitted, thereby reducing manufacturing cost and manufacturing time.
The transformer according to the present invention described above is not limited to the above-described embodiments, and various applications are possible. For example, in the above-described embodiment, the flange portion and the partition wall of the bobbin have been described as an example. However, the present invention is not limited thereto and may be configured in various shapes as necessary, such as polygons or ellipses.
In addition, in the above embodiments, the bobbin body portion is formed to have a circular cross section as an example. However, the present invention is not limited thereto, and various applications are possible, such as being configured to have an elliptical or polygonal cross section.
In addition, in the above-described embodiments, the terminal coupling part is formed in the lower flange part as an example.
In addition, although the above-described embodiments have been described using an example of an insulated switching transformer, the present invention is not limited thereto and may be widely applied to a transformer, a coil component, and an electronic device in which a plurality of coils are wound.
100 ..... Transformers
10 .....
12 ..... Winding
14 ..... bulkhead
14a ..... the
15 ..... flange section
15a .....
20 ..... Terminal fastening part
25 ..... Withdrawal Home
25a ..... the
26, 26a, 26b, 26c ..... jam home
27 .....
30 ..... External connection terminal
30a ..... input terminal 30b ..... input terminal
40 .....
51, Np1, Np2, Np3 ..... Primary Coil
52, Ns1, Ns2, Ns3, Ns4 ..... secondary coil
W1 .... first winding layer W2 ... second winding layer.
Claims (13)
A plurality of coils stacked in the plurality of winding spaces and wound;
/ RTI >
At least one of the plurality of coils is a first coil turn wound first in the winding space and the last coil turn wound in the transformer is wound in a different winding space.
A transformer that is wound while forming at least two winding layers on the body portion.
A transformer that is wound while forming at least two winding layers in one of the winding spaces, and then wound in the other winding space.
The winding space is divided into a plurality by at least one partition wall formed on the outer peripheral surface of the body portion, each of the divided winding spaces transformer having a same width.
A transformer having at least one carry-over groove, wherein said coils are wound in each of said divided winding spaces carried over said barrier rib through said carry-over groove.
It is formed extending from the one end of the winding space in the outer diameter direction and includes a terminal fastening portion for fastening a plurality of external connection terminals at the end,
The terminal fastening portion has at least one lead groove, and the coils are drawn out to the lower portion of the terminal fastening portion through the lead groove.
A transformer of which both ends are drawn out of the winding space through the drawing groove.
The at least one coil is a primary coil.
At least one of the primary coil or the secondary coil is a multiple insulation coil.
A coil in which at least one primary coil and at least one secondary coil are stacked and wound in the winding space;
/ RTI >
At least one of the primary coils is spaced apart from the first coil turn firstly wound at the winding and the last coil turn finally wound by the partition wall.
A coil wound in the winding space;
/ RTI >
At least one of the coils forms at least two winding layers in any one of the winding spaces and is preferentially wound and then wound in the other winding space.
A substrate on which the transformer is mounted;
Power module comprising a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120028213A KR20130106570A (en) | 2012-03-20 | 2012-03-20 | Transformer and power module using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120028213A KR20130106570A (en) | 2012-03-20 | 2012-03-20 | Transformer and power module using the same |
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| Publication Number | Publication Date |
|---|---|
| KR20130106570A true KR20130106570A (en) | 2013-09-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| KR1020120028213A KR20130106570A (en) | 2012-03-20 | 2012-03-20 | Transformer and power module using the same |
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| Country | Link |
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| KR (1) | KR20130106570A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101594400B1 (en) * | 2014-12-29 | 2016-02-16 | 크로바하이텍(주) | Bobbin for a transformer and Transformer having the same |
| KR102143867B1 (en) | 2019-06-07 | 2020-08-12 | (주) 트랜스온 | SLIM TRANSFORMER FOR PFC(Power Factor Correction) |
| KR20200132382A (en) | 2019-05-17 | 2020-11-25 | (주) 트랜스온 | Transformer for pfc and manufacturing method thereof |
| KR20210144218A (en) | 2020-05-21 | 2021-11-30 | 주식회사 에이텀 | A transformer for smps |
-
2012
- 2012-03-20 KR KR1020120028213A patent/KR20130106570A/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101594400B1 (en) * | 2014-12-29 | 2016-02-16 | 크로바하이텍(주) | Bobbin for a transformer and Transformer having the same |
| KR20200132382A (en) | 2019-05-17 | 2020-11-25 | (주) 트랜스온 | Transformer for pfc and manufacturing method thereof |
| KR102143867B1 (en) | 2019-06-07 | 2020-08-12 | (주) 트랜스온 | SLIM TRANSFORMER FOR PFC(Power Factor Correction) |
| KR20210144218A (en) | 2020-05-21 | 2021-11-30 | 주식회사 에이텀 | A transformer for smps |
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