KR102004783B1 - Composite electronic component and board for mounting the same - Google Patents

Abstract

The present invention relates to a composite body comprising a capacitor formed of a ceramic body having a plurality of dielectric layers and first and second internal electrodes disposed to face each other with the dielectric layer interposed therebetween, and an inductor composed of a magnetic body body including a coil portion; An input terminal formed on a first end surface of the composite body and connected to a coil portion of the inductor; A first output terminal formed at a second end surface of the composite body and connected to a coil portion of the inductor and a second output terminal formed at a second end surface of the composite body and connected to the first internal electrode of the capacitor Output terminal; And a ground terminal formed on at least one of an upper surface and a first end surface of the capacitor and connected to a second internal electrode of the capacitor, the capacitor being coupled to a side surface of the inductor, And the capacitor is a composite electronic component bonded with a magnetic adhesive.

Description

TECHNICAL FIELD [0001] The present invention relates to a composite electronic component,

The present invention relates to a composite electronic component having a plurality of passive elements and a mounting substrate therefor.

BACKGROUND ART [0002] Recent electronic equipment has been required to have various functions while minimizing the size of electronic apparatuses in response to demands for thinning, shortening, and high performance.

These electronic devices are equipped with power semiconductor-based PMICs that are responsible for efficient control and management of limited battery resources to meet various service requirements.

However, since various functions are provided in electronic devices, the number of DC / DC converters provided in power management integrated circuits (PMICs) is also increasing. In addition, a passive component And the number of mobile phones is also increasing.

In this case, the area of the component placement of the electronic device is inevitably increased, which may limit the miniaturization of the electronic device.

In addition, noise may be generated largely by the wiring pattern of the PMIC and its peripheral circuits.

In order to solve the above problem, a study has been made on a composite electronic component in which an inductor and a capacitor are vertically combined, thereby reducing the component placement area and noise generation of the electronic device.

However, when the inductor and the capacitor are arranged in the vertical direction as described above, the magnetic flux generated in the inductor affects the internal electrode of the capacitor to generate a parasitic capacitance, thereby generating a self resonant frequency (SRF) May move to the low frequency side.

On the other hand, the miniaturization of the composite electronic device has caused a problem in that the internal magnetic layer which blocks the magnetic field of the inductor is also thinned and the Q characteristic is lowered.

Korean Published Patent Application No. 2003-0014586

The present specification intends to provide a composite electronic part and a mounting substrate thereof that can reduce the component mounting area in the driving power supply system.

The present specification intends to provide a composite electronic part capable of suppressing noise generation and its mounting board in a driving power supply system.

An embodiment of the present invention is a method of manufacturing a ceramic capacitor including a capacitor formed of a ceramic body in which a plurality of dielectric layers and first and second internal electrodes disposed so as to face each other with the dielectric layer interposed therebetween and an inductor composed of a magnetic body body including a coil portion Complex; An input terminal formed on a first end surface of the composite body and connected to a coil portion of the inductor; A first output terminal formed at a second end surface of the composite body and connected to a coil portion of the inductor and a second output terminal formed at a second end surface of the composite body and connected to the first internal electrode of the capacitor Output terminal; And a ground terminal formed on at least one of an upper surface and a first end surface of the capacitor and connected to a second internal electrode of the capacitor, the capacitor being coupled to a side surface of the inductor, And a magnetic substance sheet layer interposed between the capacitor and the capacitor.

The magnetic body may have a multilayer structure in which a plurality of magnetic material layers having conductive patterns formed thereon are stacked, and the conductive pattern may constitute the coil portion.

The inductor may be in the form of a thin film in which the magnetic body body includes an insulating substrate and a coil formed on at least one surface of the insulating substrate.

The magnetic body body may be of a type including a core and a winding coil wound around the core.

The magnetic sheet layer may include one or more magnetic powders selected from the group consisting of ferrite and metal magnetic powder having an average particle diameter of 15 탆 or less.

An adhesive layer may be further formed on both sides of the magnetic substance sheet layer.

Another embodiment of the present invention is a dielectric ceramic capacitor comprising a first capacitor composed of a ceramic body having a plurality of dielectric layers and first and second internal electrodes arranged so as to face each other with the dielectric layer sandwiched therebetween and a plurality of dielectric layers, A second capacitor formed of a ceramic body in which third and fourth internal electrodes are stacked so as to face each other, and an inductor formed of a magnetic body including a coil portion; A first input terminal formed on a first end surface of the composite body and connected to a coil part of the inductor and a second input terminal formed on a first end surface of the composite body and connected to a first internal electrode of the first capacitor, An input terminal configured; A first output terminal formed on a second end face of the composite body and connected to the coil part of the inductor and a second output terminal formed on a first end face of the composite body and connected to the third internal electrode of the second capacitor, An output terminal including; And a second ground terminal formed on a second end surface of the composite body, the first ground terminal being connected to the second internal electrode of the first capacitor and the second ground terminal formed on the second end surface of the composite body, And a ground terminal including a second ground terminal, wherein the first and second capacitors are respectively coupled to both sides of the inductor, and a magnetic sheet layer is inserted between the inductor and the first and second capacitors Thereby providing a composite electronic part.

Another embodiment of the present invention is directed to a method of manufacturing a semiconductor device, which comprises a capacitor composed of a ceramic body in which first to third internal electrodes are arranged so as to face each other with a dielectric layer interposed therebetween, and an inductor composed of a magnetic body body including a coil portion Complex; A first input terminal formed on a first end face of the composite body and connected to a coil portion of the inductor and a second input terminal formed on a first end face of the composite body and connected to a first internal electrode of the capacitor, An input terminal; A first output terminal formed on a second end surface of the composite body and connected to a coil part of the inductor and a second output terminal formed on a second end surface of the composite body and connected to a third internal electrode of the capacitor, Output terminal; And a ground terminal formed on at least one of the upper and lower surfaces of the capacitor and the first side of the capacitor and connected to the second internal electrode of the capacitor, the capacitor being coupled to the side surface of the inductor, And a magnetic substance sheet layer interposed between the capacitor and the capacitor.

Wherein the first internal electrode has a lead exposed to a first end face of the composite, the second internal electrode has a lead exposed to a first side of the composite, and the third internal electrode has a second end face Lt; / RTI >

Another embodiment of the present invention is a dielectric ceramic capacitor comprising a first capacitor composed of a ceramic body having a plurality of dielectric layers and first to third internal electrodes disposed to face each other with the dielectric layer interposed therebetween, a plurality of dielectric layers, A composite having a first inductor and a second inductor, the first inductor and the second inductor being composed of a second capacitor and a magnetic body including a coil portion, the ceramic body being laminated with fourth to sixth internal electrodes arranged to face each other; A first input terminal formed on a first end surface of the composite body and connected to a coil portion of the first inductor, a second input terminal formed on a first end surface of the composite body and connected to the coil portion of the second inductor, A third input terminal formed on the first end face of the composite body and connected to the first internal electrode of the first capacitor and a second input terminal formed on the first end face of the composite body, An input terminal including four input terminals; A first output terminal formed on a second end face of the composite body and connected to a coil part of the first inductor, a second output terminal formed on a second end face of the composite body and connected to the coil part of the second inductor, A third output terminal formed on the second end face of the composite body and connected to the third internal electrode of the first capacitor and a second output terminal formed on the second end face of the composite body, An output terminal including four output terminals; A first ground terminal formed on at least one of an upper surface and a first side surface of the first capacitor of the composite body and connected to a second internal electrode of the first capacitor and a second ground terminal connected to the upper surface of the second capacitor, And a ground terminal formed on one or more sides of the first capacitor and including a second ground terminal connected to the fifth internal electrode of the second capacitor, wherein the first inductor and the second inductor are adjacent to each other, 1 capacitor is coupled to a side surface of the first inductor, the second capacitor is coupled to a side surface of the second inductor, and a magnetic sheet layer is inserted between the first and second inductors and the first and second capacitors, Thereby providing a composite electronic component.

According to another aspect of the present invention, there is provided a power supply apparatus including: an input terminal receiving power converted by a power management unit; A capacitor made of a ceramic body in which first and second internal electrodes are stacked with a plurality of dielectric layers and dielectric layers interposed therebetween so as to stabilize the power source, and an inductor composed of a magnetic body body including a coil part are combined A power stabilizer coupled to the side of the inductor and having a composite body in which a magnetic sheet layer is interposed between the inductor and the capacitor; An output terminal for supplying the stabilized power source; And a ground terminal for grounding.

Said input terminal being formed in a first end face of said composite,

Wherein the output terminal is formed on a second end surface of the composite and has a first output terminal connected to the coil part of the inductor and a second output terminal formed on the second end surface of the composite, Output terminal,

The ground terminal may be formed on at least one of the upper and lower surfaces of the capacitor and the first end surface of the capacitor, and may be connected to the second internal electrode of the capacitor.

The magnetic body may have a multilayer structure in which a plurality of magnetic material layers having conductive patterns formed thereon are stacked, and the conductive pattern may constitute the coil portion.

The inductor may be in the form of a thin film in which the magnetic body body includes an insulating substrate and a coil formed on at least one surface of the insulating substrate.

The magnetic body body may be of a type including a core and a winding coil wound around the core.

The magnetic sheet layer may include one or more magnetic powders selected from the group consisting of ferrite and metal magnetic powder having an average particle diameter of 15 탆 or less.

An adhesive layer may be further formed on both sides of the magnetic substance sheet layer.

Another embodiment of the present invention is a printed circuit board comprising: a printed circuit board having at least three electrode pads on the top; The composite electronic component mounted on the printed circuit board; And soldering for connecting the electrode pad and the composite electronic part.

According to the disclosure of the present specification, it is possible to provide a composite electronic part that can reduce the component mounting area in the driving power supply system.

Further, according to the disclosure of the present specification, it is possible to provide a composite electronic part capable of suppressing noise generation in the driving power supply system.

In addition, since the capacitor is disposed on the side surface of the inductor, the effect of the inductor on the internal electrode of the capacitor is minimized to prevent the change of the self resonant frequency (SRF) have.

Further, the composite electronic device according to the embodiment of the present invention can prevent the degradation of the Q characteristic of the component because the capacitor is disposed on the side surface of the inductor.

Since the magnetic substance sheet layer is inserted between the inductor and the capacitor according to the disclosure of the present disclosure, it is possible to prevent the interference of the external terminal by the shield effect, thereby preventing deterioration of the electrical characteristics of the composite electronic part.

1 is a perspective view schematically showing a composite electronic part according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view showing the inside of the composite electronic part according to the first embodiment of the composite electronic part of Fig. 1. Fig.
3 is a schematic perspective view showing the inside of the composite electronic part according to the second embodiment of the composite electronic part of Fig.
4 is a schematic perspective view showing the inside of the composite electronic part according to the third embodiment of the composite electronic part of Fig.
5 is a plan view showing an internal electrode usable in the multilayer ceramic capacitor of the composite electronic component shown in FIG.
6 is an equivalent circuit diagram of the composite electronic part shown in Fig.
7 is a perspective view schematically showing a composite electronic part according to another embodiment of the present invention.
8 is a plan view showing an internal electrode usable in the multilayer ceramic capacitor of the composite electronic component shown in FIG.
9 is an equivalent circuit diagram of the composite electronic part shown in Fig.
10 is a perspective view schematically showing a composite electronic part according to another embodiment of the present invention.
11 is a plan view showing an internal electrode that can be employed in the multilayer ceramic capacitor of the composite electronic component shown in Fig.
12 is an equivalent circuit diagram of the composite electronic part shown in Fig.
13 is a perspective view schematically showing a composite electronic part according to another embodiment of the present invention.
14 is a plan view showing an internal electrode usable in a multilayer ceramic capacitor among the composite electronic parts shown in Fig.
15 is an equivalent circuit diagram of the composite electronic part shown in Fig.
16 is a view showing a driving power supply system for supplying driving power to a predetermined terminal requiring a driving power source through a battery and a power management unit.
17 is a diagram showing an arrangement pattern of the driving power supply system.
18 is a circuit diagram of a composite electronic device according to an embodiment of the present invention.
19 is a diagram showing an arrangement pattern of a driving power supply system to which a composite electronic part according to an embodiment of the present invention is applied.
20 is a perspective view showing a state in which the composite electronic component of Fig. 1 is mounted on a printed circuit board.
FIG. 21 is a graph showing a change in a self resonant frequency (SRF) according to an embodiment of the present invention and a comparative example.
22 is a graph showing changes in Q characteristics according to Examples and Comparative Examples of the present invention.

The embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Furthermore, embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings may be exaggerated for clarity of description, and the elements denoted by the same reference numerals in the drawings are the same elements.

Composite electronic parts

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view schematically showing a composite electronic part according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view showing the inside of the composite electronic part according to the first embodiment of the composite electronic part of Fig. 1. Fig.

3 is a schematic perspective view showing the inside of the composite electronic part according to the second embodiment of the composite electronic part of Fig.

4 is a schematic perspective view showing the inside of the composite electronic part according to the third embodiment of the composite electronic part of Fig.

5 is a plan view showing an internal electrode usable in the multilayer ceramic capacitor of the composite electronic component shown in FIG.

Referring to FIG. 1, in a composite electronic device according to an embodiment of the present invention, 'L' direction in FIG. 1, 'W' direction in 'width direction'Quot; direction. ≪ / RTI > Here, the 'thickness direction' can be used in the same sense as the direction of stacking the dielectric layers of the capacitor, that is, the 'lamination direction'.

The length, width, and thickness direction of the composite electronic component are defined to be the same as the length, width, and thickness direction of the capacitor and the inductor, as described later.

Further, in one embodiment of the present invention, the composite electronic part may have a first side, a second side, a first end face, and a second end face that connect the upper face and the lower face to the upper face and the lower face opposite to each other. The shape of the composite electronic part is not particularly limited, but may be a hexahedron shape as shown.

The first and second side surfaces and the first and second end surfaces of the composite electronic component are defined as the first and second side surfaces of the capacitor and the inductor, and the surfaces in the same direction as the first and second end surfaces, respectively, .

When the capacitor is coupled to a side surface of the inductor, the upper surface of the composite electronic component is defined as the upper surface of the inductor and the capacitor, and the lower surface of the composite electronic component And the lower surface of the inductor and the capacitor.

The first and second side surfaces correspond to a surface facing the width direction of the composite electronic part, the first and second end surfaces correspond to a surface facing the longitudinal direction of the composite electronic part, And the lower surface correspond to the opposite surface in the thickness direction of the composite electronic part.

1 to 3, a composite electronic device 100 according to an embodiment of the present invention includes a plurality of dielectric layers 11, first and second dielectric layers 11, A capacitor 110 formed of a ceramic body in which internal electrodes 31 and 32 are laminated and an inductor 120 formed of a magnetic body including a coil portion 140 are combined.

In the present embodiment, the composite body 130 may have a first side face, a second side face, a first end face, and a second end face that connect the upper face and the lower face opposed to each other to the upper face and the lower face.

The shape of the composite body 130 is not particularly limited, but may be a hexahedron shape as shown in the figure.

According to one embodiment of the present invention, the capacitor 110 may be coupled to the side surface of the inductor 120, but the present invention is not limited thereto.

Also, according to an embodiment of the present invention, the magnetic substance sheet layer 121 may be inserted between the inductor 120 and the capacitor 110.

The magnetic sheet layer 121 may include one or more magnetic powders selected from the group consisting of ferrite and metal magnetic powder having an average particle diameter of 15 μm or less.

An adhesive layer 121 'may be further formed on both sides of the magnetic substance sheet layer 121.

The composite 130 may be formed by coupling the capacitor 110 and the inductor 120, and the method of forming the composite 130 is not particularly limited.

For example, in the formation of the composite body 130, the magnetic substance sheet layer 121 is inserted between the capacitor 110 and the inductor 120 manufactured separately, and an adhesive layer (not shown) is formed on both sides of the magnetic substance sheet layer 121 121 'to couple the capacitor and the inductor.

In particular, the adhesive layer 121 'used to couple the capacitor 110 and the inductor 120 may include, but is not limited to, a polymer adhesive such as an epoxy resin.

The magnetic powder may be at least one selected from the group consisting of ferrite and metal magnetic powder, but it is not limited thereto, and any material that exhibits magnetism may be used.

The magnetic powder is not particularly limited, but may be, for example, an average particle diameter of 15 mu m or less.

According to an embodiment of the present invention, the capacitor 110 may be coupled to a side surface of the inductor 120, and a magnetic sheet layer 121 may be inserted between the inductor 120 and the capacitor 110 It is possible to prevent the interference of the external terminal by the shield effect, thereby preventing deterioration of the electrical characteristics of the composite electronic part.

Specifically, the capacitor 110 is coupled to the side surface of the inductor 120, thereby minimizing the influence of the inductor on the internal electrodes of the capacitor, thereby preventing a change in the self resonant frequency (SRF) Can be prevented.

In addition, since the magnetic substance sheet layer is inserted between the inductor 120 and the capacitor 110, the interference of the external terminal due to the shield effect can be blocked, thereby preventing deterioration of the electrical characteristics of the composite electronic part have.

When the average particle size of the magnetic powder exceeds 15 탆, the magnetic powder has a too large particle size, and the shielding effect may be insufficient due to a reduction in the density of the magnetic powder.

The method for bonding the capacitor 110 and the inductor 120 using the adhesive layer 121 'is not particularly limited and the adhesive layer 121' may be formed on both sides of the magnetic sheet layer 121, It can be cured and bonded.

The capacitor 110 may be coupled to a side surface of the inductor 120 and a detailed description of the effect of inserting the magnetic sheet layer 121 between the inductor 120 and the capacitor 110 Will be described later.

Hereinafter, the capacitor 110 and the inductor 120 constituting the composite 130 will be described in detail.

According to an embodiment of the present invention, the magnetic body constituting the inductor 120 may include a coil portion 140.

The inductor 120 is not particularly limited and may be, for example, a multilayer inductor, a thin film type inductor, or a wound type inductor, or a laser helixing type.

The layered inductor refers to an inductor manufactured by printing electrodes on a thin ferrite or glass ceramic sheet in a thick film and stacking sheets on which coil patterns of various layers are printed via via holes, and connecting internal conductors.

The thin-film type inductor refers to an inductor manufactured by forming a coil conductor on a ceramic substrate by thin-film sputtering or plating and filling the coil conductor with a ferrite material.

The wire-wound inductor means an inductor manufactured by winding a wire (coil wire) around a core.

The laser helixing type inductor is formed by forming an electrode layer on a ceramic bobbin by sputtering or plating, forming a coil shape by laser helixing, covering the outer protective film resin, and forming an external terminal it means.

Referring to FIG. 2, in the composite electronic device according to the first embodiment of the present invention, the inductor 120 may be a multilayer inductor.

Specifically, the magnetic body body is formed by stacking a plurality of magnetic substance layers 21 on which a conductive pattern 41 is formed, and the conductive pattern 41 may constitute the coil part 140.

Referring to FIG. 3, in the composite electronic device according to the second embodiment of the present invention, the inductor 120 may be a thin film type inductor.

Specifically, the inductor 120 may be in the form of a thin film including the magnetic body including an insulating substrate 123 and a coil formed on at least one surface of the insulating substrate 123.

The magnetic body may be formed by filling a magnetic body 122 on upper and lower portions of an insulating substrate 123 formed on at least one surface of the coil.

Referring to FIG. 4, in the composite electronic device according to the third embodiment of the present invention, the inductor 120 may be a wire-wound inductor.

Specifically, in the inductor 120, the magnetic body may include a core 124 and a winding coil wound around the core 124.

2 and 4, the first and second inner electrodes 31 and 32 of the capacitor 110 are stacked in a shape perpendicular to the mounting surface. However, the present invention is not limited thereto. Direction can be stacked.

The magnetic material layer 21 and the magnetic material 122 may be Ni-Cu-Zn-based, Ni-Cu-Zn-Mg-based or Mn-Zn-based ferrite-based materials.

According to an embodiment of the present invention, the inductor 120 may be a power inductor that can be applied to a large capacity current.

The power inductor may mean an inductor having a higher efficiency than that of a general inductor when the direct current is applied. In other words, the power inductor can be seen to include the DC bias characteristic (change in inductance according to the application of DC current) to the function of a general inductor.

That is, the composite electronic device according to an embodiment of the present invention is used in a power management IC (Power Management IC), and is not a general inductor, but a power inductor, which is a high efficiency inductor having a small change in inductance when a direct current is applied thereto, . ≪ / RTI >

The ceramic body constituting the capacitor 110 is formed by stacking a plurality of dielectric layers 11. A plurality of internal electrodes 31 and 32 are sequentially formed in the ceramic body, Electrodes) can be arranged separately from each other with the dielectric layer therebetween.

The dielectric layer 11 may be formed by firing a ceramic green sheet including a ceramic powder, an organic solvent, and an organic binder. The ceramic powder may be a material having a high dielectric constant, but not limited thereto, a barium titanate (BaTiO ₃ ) -based material, a strontium titanate (SrTiO ₃ ) -based material, or the like can be used.

According to an embodiment of the present invention, the first internal electrode 31 may be exposed to the first end face of the composite body 130, and the second internal electrode 32 may be exposed to the first end face of the composite body 130 But it is not necessarily limited thereto.

According to an embodiment of the present invention, the first and second internal electrodes 31 and 32 may be formed of a conductive paste containing a conductive metal.

The conductive metal may be, but is not limited to, nickel (Ni), copper (Cu), palladium (Pd), or an alloy thereof.

The first and second internal electrodes 31 and 32 can be printed with a conductive paste through a printing method such as a screen printing method or a gravure printing method on a ceramic green sheet forming the dielectric layer 11. [

The ceramic green sheet on which the internal electrodes are printed may be alternately laminated and fired to form the ceramic body.

5, the pattern shapes of the first and second internal electrodes 31 and 32 are shown, but the present invention is not limited thereto and various modifications are possible.

The capacitor may control a voltage supplied from a power management IC (PMIC).

A composite electronic device 100 according to an embodiment of the present invention includes an input terminal 151 formed on a first end surface of the composite body 130 and connected to a coil portion 140 of the inductor 120; A first output terminal 152a formed on a second end surface of the composite 130 and connected to the coil part 140 of the inductor 120 and a second output terminal 152b formed on a second end surface of the composite 130, An output terminal 152 including a second output terminal 152b connected to the first internal electrode 31 of the first transistor 110; And a ground terminal 153 formed on at least one of the upper surface and the first end surface of the capacitor 110 of the composite 130 and connected to the second internal electrode 32 of the capacitor 110 can do.

The input terminal 151 and the first output terminal 152b are connected to the coil part 140 of the inductor 120 so as to serve as an inductor in the composite electronic part.

The other first output terminal 152a is connected to the first internal electrode 31 of the capacitor 110 and the second internal electrode 32 of the capacitor 110 is connected to the ground terminal 153 And may serve as a capacitor in the composite electronic part.

The input terminal 151, the output terminal 152, and the ground terminal 153 may be formed of a conductive paste containing a conductive metal.

The conductive metal may be, but is not limited to, nickel (Ni), copper (Cu), tin (Sn), or an alloy thereof.

The conductive paste may further include an insulating material. For example, the insulating material may be glass.

The method of forming the input terminal 151, the output terminal 152 and the ground terminal 153 is not particularly limited and may be formed by dipping the ceramic body or by other methods such as printing and plating Of course, it can be used.

6 is an equivalent circuit diagram of the composite electronic part shown in Fig.

6, the inductor 120 and the capacitor 110 are coupled to each other, and the distance between the inductor 120 and the capacitor 110 is the shortest distance So that it is effective for noise reduction.

In addition, since the inductor 120 and the capacitor 110 are coupled to each other, the mounting area in the power management IC (PMIC) can be minimized and the mounting space can be secured.

In addition, there is also an effect that the cost at the time of mounting can be reduced.

Meanwhile, as various functions are provided in electronic devices, the number of DC / DC converters provided in power management integrated circuits (PMICs) is increasing. In addition, the number of DC / The number of devices is also increasing.

In this case, the area of the component placement of the electronic device is inevitably increased, which may limit the miniaturization of the electronic device.

In addition, noise may be generated largely by the wiring pattern of the PMIC and its peripheral circuits.

In order to solve the above problem, a study has been made on a composite electronic component in which an inductor and a capacitor are vertically combined, thereby reducing the component placement area and noise generation of the electronic device.

However, when the inductor and the capacitor are arranged in the vertical direction as described above, the magnetic flux generated in the inductor affects the internal electrode of the capacitor to generate a parasitic capacitance, thereby generating a self resonant frequency (SRF) May move to the low frequency side.

When the self resonant frequency (SRF) moves toward the low frequency as described above, there may arise a problem that the frequency range of the inductor usable in one embodiment of the present invention becomes narrow.

That is, since the inductor function does not appear in the high frequency range above the self resonant frequency (SRF), there is a problem that the usable frequency range is limited when the self resonant frequency (SRF) moves to the low frequency side .

However, according to the embodiment of the present invention, since the capacitor 110 can be coupled to the side surface of the inductor 120, the influence of the magnetic flux generated in the inductor on the internal electrode of the capacitor can be minimized It is possible to prevent the change of the self resonant frequency (SRF).

That is, according to one embodiment of the present invention, the distance between the inductor 120 and the capacitor 110 can be designed to be the shortest distance, thereby reducing the noise and reducing the self resonant frequency (SRF) And the range of the inductor that can be used for the low frequency is not limited.

On the other hand, the miniaturization of the composite electronic device has caused a problem in that the internal magnetic layer which blocks the magnetic field of the inductor is also thinned and the Q characteristic is lowered.

The Q characteristic means a loss or an inefficiency of a device, and the larger the Q value, the less the loss and the higher the efficiency.

That is, according to the embodiment of the present invention, the capacitor 110 is coupled to the side surface of the inductor 120, thereby minimizing the influence of each component on the Q component.

Also, according to an embodiment of the present invention, the magnetic substance sheet layer 121 may be inserted between the inductor 120 and the capacitor 110.

The complex body 130 is formed by inserting a magnetic substance sheet layer 121 between the capacitor 110 and the inductor 120 separately manufactured and by forming an adhesive layer 121 'formed on both sides of the magnetic substance sheet layer 121 And is not particularly limited.

According to an embodiment of the present invention, the capacitor 110 may be coupled to a side surface of the inductor 120, and a magnetic sheet layer 121 may be inserted between the inductor 120 and the capacitor 110 It is possible to prevent the interference of the external terminal by the shield effect, thereby preventing deterioration of the electrical characteristics of the composite electronic part.

Specifically, by inserting the magnetic substance sheet layer 121 between the inductor 120 and the capacitor 110, the magnetic flux generated in the inductor affects the external terminal and the internal electrode of the capacitor The shielding effect can prevent the deterioration of electrical characteristics of the composite electronic part.

That is, the effect of the magnetic flux generated in the inductor on the internal electrodes of the capacitor is minimized, and the effect of preventing the change of the self resonant frequency (SRF) can be more excellent.

In addition, deterioration of electrical characteristics, which may occur due to the external terminals of the inductor being disposed adjacent to the external terminals of the capacitor and the internal electrodes, is minimized, and the influence of the components on each other is minimized.

7 is a perspective view schematically showing a composite electronic part according to another embodiment of the present invention.

8 is a plan view showing an internal electrode usable in the multilayer ceramic capacitor of the composite electronic component shown in FIG.

9 is an equivalent circuit diagram of the composite electronic part shown in Fig.

7 to 9, a composite electronic device according to another embodiment of the present invention includes a plurality of dielectric layers 211, first and second internal electrodes (first and second internal electrodes) 211 and 221 disposed to face each other with the dielectric layer 211 interposed therebetween A plurality of dielectric layers 211 and third and fourth internal electrodes 233 and 234 disposed to face each other with the dielectric layer 211 interposed therebetween, A second capacitor 210b made of a laminated ceramic body and an inductor 220 made of a magnetic body including a coil part; A first input terminal 251a formed on a first end surface of the composite body 230 and connected to a coil portion of the inductor 220 and a second input terminal 252a formed on a first end surface of the composite body 230, An input terminal 251 composed of a second input terminal 251b connected to the first internal electrode 231 of the first input terminal 210a; A first output terminal 252a formed on a second end surface of the composite body 230 and connected to a coil part of the inductor 220 and a second output terminal 252a formed on a first end surface of the composite body 230, An output terminal 252 including a second output terminal 252b connected to a third internal electrode 233 of the second internal electrode 210b; And a first ground terminal 253a formed on a second end surface of the composite body 230 and connected to the second internal electrode 232 of the first capacitor 210a and a second ground terminal 253a formed on the second end surface of the composite body 230. [ And a ground terminal 253 including a second ground terminal 253b connected to the fourth internal electrode 234 of the second capacitor 210b and the ground terminal 253 including the first and second capacitors 210a And 210b are coupled to both sides of the inductor 220 and the magnetic substance sheet layer 221 may be inserted between the inductor 220 and the first and second capacitors 210a and 210b.

The magnetic body may have a multilayer structure in which a plurality of magnetic material layers having conductive patterns formed thereon are stacked, and the conductive pattern may constitute the coil portion.

The inductor may be in the form of a thin film in which the magnetic body body includes an insulating substrate and a coil formed on at least one surface of the insulating substrate.

The magnetic body body may be of a type including a core and a winding coil wound around the core.

The magnetic sheet layer may include one or more magnetic powders selected from the group consisting of ferrite and metal magnetic powder having an average particle diameter of 15 탆 or less.

An adhesive layer 221 'may be further formed on both sides of the magnetic substance sheet layer 221.

Referring to FIG. 9, according to another embodiment of the present invention, the first capacitor 210a may be a capacitor formed between a connection terminal of a battery and a power management unit (PMIC) and a ground, as described later.

That is, the first capacitor 210a may reduce the noise included in the first power source.

Also, the first capacitor 210a may charge the charge. When the PMIC instantaneously consumes a large current, the capacitor 210a discharges the charged electric charge to suppress the voltage fluctuation of the PMIC.

The second capacitor 210b is connected between the connection terminal of the power management unit (PMIC) and the output terminal (V _dd ) and the ground, similarly to the capacitor 110 in the composite electronic device according to the embodiment of the present invention described above May be a formed capacitor.

The second capacitor 210b may reduce the noise included in the second power source output to the power management unit (PMIC).

A first ground terminal 253a connected to a second internal electrode of the first capacitor 210a and a second ground terminal 253a formed on a second end surface of the composite body 230 and connected to a fourth internal electrode of the second capacitor 210b The second ground terminal 253b can be grounded in one direction by connecting electrode pads to the board when mounted on the board as described later.

Other features are the same as those of the composite electronic device according to the embodiment of the present invention, and therefore, the description thereof is omitted here to avoid duplication.

10 is a perspective view schematically showing a composite electronic part according to another embodiment of the present invention.

11 is a plan view showing an internal electrode that can be employed in the multilayer ceramic capacitor of the composite electronic component shown in Fig.

12 is an equivalent circuit diagram of the composite electronic part shown in Fig.

10 to 12, a composite electronic device according to another embodiment of the present invention includes a plurality of dielectric layers 311 and first to third internal electrodes (first and second internal electrodes 311 and 311) arranged to face each other with the dielectric layer 311 interposed therebetween 331, 332, and 333), and an inductor 320 formed of a magnetic body including a coil portion; A first input terminal 351a formed on a first end surface of the composite body 330 and connected to a coil portion of the inductor 320 and a second input terminal formed on a first end surface of the composite body 330, An input terminal 351 including a second input terminal 351b connected to the first internal electrode 331; A first output terminal 352a formed on a second end surface of the composite body 330 and connected to a coil part of the inductor 320 and a second output terminal 352b formed on a second end surface of the composite body 330, An output terminal 352 including a second output terminal 352b connected to the third internal electrode 333 of the first and second input terminals; And a ground terminal 353 formed on at least one of the upper side and the first side of the capacitor 310 of the composite body 330 and connected to the second internal electrode 332 of the capacitor 310 The capacitor 310 is coupled to the side of the inductor 320 and the magnetic sheet layer 321 may be inserted between the inductor 320 and the capacitor 310.

The magnetic body may have a multilayer structure in which a plurality of magnetic material layers having conductive patterns formed thereon are stacked, and the conductive pattern may constitute the coil portion.

The inductor may be in the form of a thin film in which the magnetic body body includes an insulating substrate and a coil formed on at least one surface of the insulating substrate.

The magnetic body body may be of a type including a core and a winding coil wound around the core.

The magnetic sheet layer may include one or more magnetic powders selected from the group consisting of ferrite and metal magnetic powder having an average particle diameter of 15 탆 or less.

An adhesive layer 321 'may be further formed on both sides of the magnetic substance sheet layer 321.

11, the first internal electrode 331 has a lead 331a exposed at a first end surface of the composite body 330 and the second internal electrode 332 is exposed at a first end surface of the composite body 330 And the third internal electrode 333 may have a lead 333a exposed to the second end face of the composite body 330. [

Referring to FIG. 12, according to another embodiment of the present invention, the first internal electrode 331 and the second internal electrode 332 may form a first capacitor portion in the capacitor 310, And may be a capacitor formed between the battery and the connection terminal of the power management unit (PMIC) and the ground.

That is, the first capacitor unit may reduce the noise included in the first power source.

In addition, the first capacitor unit may charge the charge. When the PMIC instantaneously consumes a large current, the first capacitor unit discharges the charged charge to suppress the voltage fluctuation of the PMIC.

In the capacitor 310, the second internal electrode 332 and the third internal electrode 333 can form a second capacitor portion. In the capacitor 310 according to the embodiment of the present invention, 110 may be a capacitor formed between the connection point of the power management unit (PMIC) and the output terminal (V _dd ) and the ground.

The second capacitor unit may reduce noise included in the second power source output to the power management unit (PMIC).

The second internal electrode 332 may include a first capacitor unit and a second capacitor unit, and may be connected to the ground terminal 353 formed on the first side of the composite body 330 and grounded in one direction.

Other features are the same as those of the composite electronic device according to the embodiment of the present invention, and therefore, the description thereof is omitted here to avoid duplication.

13 is a perspective view schematically showing a composite electronic part according to another embodiment of the present invention.

14 is a plan view showing an internal electrode usable in the multilayer ceramic capacitor of the composite electronic component shown in FIG.

15 is an equivalent circuit diagram of the composite electronic part shown in Fig.

13 to 15, a composite electronic device according to another embodiment of the present invention includes a plurality of dielectric layers 411 and first to third internal electrodes (first and second internal electrodes 411 and 411) arranged to face each other with the dielectric layer 411 interposed therebetween The first to fourth internal electrodes 434, 432, 433, 433, 433, 433, 433, 433, 433 and 433 are stacked on the dielectric layer 411. The first to fourth dielectric layers 411, A second capacitor 410b made of a ceramic body laminated with the first and second inductors 435 and 436 and a first inductor 420a and a second inductor 420b made of a magnetic body including a coil part; A first input terminal 451a formed on a first end surface of the composite body 430 and connected to a coil portion of the first inductor 420a, a second input terminal formed on a first end surface of the composite body 430, A second input terminal 451b connected to the coil part of the inductor 420b and a second input terminal 451b formed on the first end surface of the composite 430 and connected to the first internal electrode 431 of the first capacitor 410a. 3 input terminal 451c and a fourth input terminal 451d formed on the first end surface of the composite body 430 and connected to the fourth internal electrode 434 of the second capacitor 410b, (451); A first output terminal 452a formed on the second end surface of the composite body 430 and connected to the coil part of the first inductor 420a and a second output terminal formed on the second end surface of the composite body 430, A second output terminal 452b connected to the coil part of the inductor 420b and a second output terminal 452b formed on the second end face of the composite 430 and connected to the third internal electrode 433 of the first capacitor 410a. 3 output terminal 452c and a fourth output terminal 452d formed on the second end face of the composite body 430 and connected to the sixth internal electrode 436 of the second capacitor 410b, (452); And a first ground terminal connected to the second internal electrode 432 of the first capacitor 410a and a second ground terminal 420 formed on at least one of the upper surface and the first surface of the first capacitor 410a of the composite body 430, The second capacitor 410b is formed on the upper surface and the first side of the second capacitor 410b of the composite body 430 and is connected to the fifth internal electrode 435 of the second capacitor 410b. The first inductor 420a and the second inductor 420b are adjacent to each other and the first capacitor 410a is connected to the first inductor 420a and the second inductor 420b, 420b and the second capacitor 410b is coupled to the side of the second inductor 420b and the first and second inductors 420a and 420b and the first and second capacitors The magnetic substance sheet layer 421 can be inserted between the magnetic substance sheet layers 421, 410a, and 410b.

The magnetic body may have a multilayer structure in which a plurality of magnetic material layers having conductive patterns formed thereon are stacked, and the conductive pattern may constitute the coil portion.

The inductor may be in the form of a thin film in which the magnetic body body includes an insulating substrate and a coil formed on at least one surface of the insulating substrate.

The magnetic body body may be of a type including a core and a winding coil wound around the core.

The magnetic sheet layer may include one or more magnetic powders selected from the group consisting of ferrite and metal magnetic powder having an average particle diameter of 15 탆 or less.

An adhesive layer 421 'may be further formed on both sides of the magnetic substance sheet layer 421.

14, the first internal electrode 431 has a lead 431a exposed at a first end face of the composite body 430, and the second internal electrode 432 is exposed at the first end face of the composite body 430 And the third internal electrode 433 may have a lead 433a exposed to the second end face of the composite body 430. [

Similarly, the fourth internal electrode 434 has a lead 434a exposed at a first end surface of the composite 430, and the fifth internal electrode 435 is exposed to the first side of the composite 430 And the sixth internal electrode 436 may have a lead 436a exposed to the second end face of the composite body 430. [

Referring to FIG. 15, according to another embodiment of the present invention, the first internal electrode 431 and the second internal electrode 432 in the first capacitor 410a may form a first capacitor portion, And may be a capacitor formed between the battery and the connection terminal of the power management unit (PMIC) and the ground.

That is, the first capacitor unit may reduce the noise included in the first power source.

In addition, the first capacitor unit may charge the charge. When the PMIC instantaneously consumes a large current, the first capacitor unit discharges the charged charge to suppress the voltage fluctuation of the PMIC.

The second internal electrode 432 and the third internal electrode 433 may form a second capacitor portion in the first capacitor 410a. In the composite electronic device according to an embodiment of the present invention, And may be a capacitor formed between the connection terminal of the power management unit (PMIC) and the output terminal (V _dd ) and the ground in the same manner as the capacitor 110.

The second capacitor unit may reduce noise included in the second power source output to the power management unit (PMIC).

The second internal electrode 432 of the first capacitor 410a constitutes a first capacitor unit and a second capacitor unit and is connected to a first ground terminal 453a formed on a first side of the composite body 430, And can be grounded in one direction.

The fourth to sixth internal electrodes 434, 435 and 436 of the second capacitor 410b have the same role as the first to third internal electrodes 431, 432 and 433 of the first capacitor 410a Therefore, it will be omitted here.

Other features are the same as those of the composite electronic device according to the embodiment of the present invention, and therefore, the description thereof is omitted here to avoid duplication.

16 is a view showing a driving power supply system for supplying driving power to a predetermined terminal requiring a driving power source through a battery and a power management unit.

Referring to FIG. 16, the driving power supply system may include a battery 300, a first power stabilization unit 400, a power management unit 500, and a second power stabilization unit 600.

The battery 300 may supply power to the power management unit 500. Here, the power supplied from the battery 300 to the power management unit 500 is defined as a first power source.

The first power stabilization unit 400 may stabilize the first power V1 and supply the stabilized first power to the power management unit. The first power stabilization unit 400 may include a capacitor C1 formed between a connection terminal of the battery 300 and the power management unit 500 and a ground. The capacitor C1 may reduce the noise included in the first power source.

Also, the capacitor C1 can charge the charge. When the power management unit 500 instantaneously consumes a large current, the capacitor C1 discharges the charged charge to suppress voltage fluctuation of the power management unit 500. [

It is preferable that the capacitor C1 is a high-capacity capacitor having 300 layers or more of dielectric layers.

The power management unit 500 converts the power input to the electronic equipment to the electronic equipment, and distributes, charges, and controls the power. Therefore, the power management unit 500 may generally include a DC / DC converter.

Also, the power management unit 500 may be implemented as a power management integrated circuit (PMIC).

The power management unit 500 may convert the first power V1 into a second power V2. The second power source V2 may be a power source required by an active device, such as an IC, connected to an output terminal of the power management unit 500 and supplied with driving power.

The second power stabilization unit 600 may stabilize the second power source V2 and may transmit the stabilized second power source to the output terminal Vdd. The output terminal Vdd may be connected to an active device such as an IC that receives driving power from the power management unit 500.

Specifically, the second power stabilization unit 600 may include an inductor L1 connected in series between the power management unit 500 and the output terminal Vdd. The second power stabilization unit 600 may include a capacitor C2 formed between the power management unit 500 and the connection terminal of the output terminal Vdd and the ground.

The second power stabilization unit 600 may reduce the noise included in the second power source V2.

Also, the second power stabilization unit 600 can supply power stably to the output terminal Vdd.

The inductor L1 is preferably a power inductor that can be applied to a large current.

The power inductor may mean an inductor having a higher efficiency than that of a general inductor when the direct current is applied. In other words, the power inductor can be seen to include the DC bias characteristic (change in inductance according to the application of DC current) to the function of a general inductor.

It is preferable that the capacitor C2 is a high capacity capacitor.

17 is a diagram showing an arrangement pattern of the driving power supply system.

Referring to FIG. 17, the arrangement pattern of the power management unit 500, the power inductor L1, and the second capacitor C2 can be confirmed.

Generally, the power management unit 500 (PMIC) may include several to several dozen DC / DC converters. In order to realize the function of the DC / DC converter, a power inductor and a high capacity capacitor are required for each DC / DC converter.

Referring to FIG. 17, the power management unit 500 may include predetermined terminals N1 and N2. The power management unit 500 receives power from the battery and can convert the power using the DC / DC converter. In addition, the power management unit 500 can supply the converted power through the first terminal N1. The second terminal N2 may be a ground terminal.

Here, the first power inductor L ₁ and the second capacitor C ₂ receive power from the first terminal N 1, stabilize it, and supply the driving power through the third terminal N 3, The function of the stabilizing unit can be performed.

The fourth to sixth terminals N4 to N6 shown in FIG. 17 perform the same functions as those of the first to third terminals N1 to N3, and a detailed description thereof will be omitted.

A key consideration in the pattern design of a drive power supply system is that it should be placed as close as possible to the power management, power inductor, and high capacity capacitors. It is also necessary to design the wiring of the power source line to be short and thick.

This is because, when the above-mentioned requirements are satisfied, the component placement area can be reduced and noise generation can be suppressed.

When the number of output stages of the power management unit 500 is small, there is no great problem in disposing the power inductor and the high capacity capacitor close to each other. However, when various outputs of the power management unit 500 are to be used, the arrangement of the power inductor and the high capacity capacitor can not be normally performed due to the density of parts. Also, depending on the priority of the power source, there may arise a situation where the power inductor and the high capacity capacitor are placed in a non-optimized state.

For example, since the power inductor and the high-capacity capacitor have a large device size, a power line and a signal line are inevitably elongated in actual device placement.

When the power inductor and the high capacity capacitor are arranged in a non-optimized state, the interval between the elements and the power line become long, which may cause noise. The noise may adversely affect the power supply system.

18 is a circuit diagram of a composite electronic device according to an embodiment of the present invention.

18, the hybrid electronic device 700 may include an input terminal A, an input terminal, a power stabilizer, an output terminal B, an output terminal, and a ground terminal C (ground terminal).

The power stabilizer may include a power inductor L1 and a second capacitor C2.

The composite electronic part 700 is an element capable of performing the function of the second power stabilizing part described above.

The input terminal A may be supplied with power converted by the power management unit 500.

The power stabilizing unit may stabilize the power supplied from the input terminal unit (A).

The output terminal portion B can supply the stabilized power to the output terminal Vdd.

The ground terminal part C may connect the power stabilizing part to the ground.

The power stabilizing unit includes a power inductor L1 connected between the input terminal A and the output terminal B and a second capacitor C2 connected between the ground terminal C and the output terminal .

Referring to FIG. 18, the interval between the power inductor L1 and the second capacitor C2 can be reduced by sharing the output terminal B with the power inductor L1 and the second capacitor C2.

As described above, the composite electronic device 700 includes a power inductor and a large-capacity capacitor provided at the output power terminal of the power management unit 500 as one component. Accordingly, the integrated electronic device 700 has improved integration of devices.

19 is a diagram showing an arrangement pattern of a driving power supply system to which a composite electronic part according to an embodiment of the present invention is applied.

Referring to FIG. 19, it can be seen that the second capacitor C2 and the power inductor L1 shown in FIG. 17 are replaced by a composite electronic component according to an embodiment of the present invention.

As described above, the composite electronic part can perform the function of the second power stabilizing unit.

In addition, by replacing the second capacitor C2 and the power inductor L1 with the composite electronic device according to the embodiment of the present invention, the length of the wiring can be minimized. In addition, the number of devices to be disposed is reduced, so that optimized device placement is possible.

That is, according to the embodiment of the present invention, the power management unit, the power inductor, and the high capacity capacitor can be arranged as close as possible, and the wiring of the power supply line can be designed to be short and thick, and noise can be reduced.

On the other hand, in order to satisfy consumer demands, electronic device manufacturers are striving to reduce the PCB size provided in electronic devices. Therefore, it is required to increase the degree of integration of the IC mounted on the PCB. It is possible to satisfy such a requirement by constituting a plurality of elements as one composite part like the composite electronic part according to the embodiment of the present invention.

According to an embodiment of the present invention, by implementing two components (a second capacitor, a power inductor) as one composite electronic component, the PCB mounting area can be reduced. According to the present embodiment, there is an effect of reducing the mounting area by about 10 to 30% as compared with the conventional arrangement pattern.

Also, according to an embodiment of the present invention, the power management unit 500 may supply power to the IC that receives the driving power by the shortest wiring.

In addition, the composite electronic device according to an embodiment of the present invention minimizes the influence of the magnetic flux generated in the inductor on the internal electrodes of the capacitor due to the capacitor being disposed on the side surface of the inductor, Frequency, SRF) can be prevented.

Further, the composite electronic device according to the embodiment of the present invention can prevent the degradation of the Q characteristic of the component because the capacitor is disposed on the side surface of the inductor.

In addition, since the magnetic substance sheet layer is inserted between the inductor and the capacitor, it is possible to prevent the interference of the external terminal by the shield effect, thereby preventing deterioration of electrical characteristics of the composite electronic part.

The mounting substrate of the multilayer ceramic capacitor

20 is a perspective view showing a state in which the composite electronic component of Fig. 1 is mounted on a printed circuit board.

20, the mounting board 800 of the composite electronic component 100 according to the present embodiment includes a printed circuit board 810 on which the composite electronic component 100 is mounted, and a printed circuit board 810 on the top surface of the printed circuit board 810 And at least three electrode pads 821, 822, and 823 formed.

The electrode pad may include first to third electrode pads 821, 822, and 823 connected to the input terminal 151, the output terminal 152, and the ground terminal 153 of the composite electronic device.

The input terminal 151, the output terminal 152 and the ground terminal 153 of the composite electronic device 100 are connected to the first to third electrode pads 821, 822, And may be electrically connected to the printed circuit board 810 by a printed circuit board 830.

The composite electronic component mounted on the printed circuit board may be a composite electronic component according to another embodiment of the present invention, and will not be described here to avoid redundant description.

Table 1 below is a table showing changes in frequency-dependent inductance (Ls), Q characteristic, and self resonant frequency (SRF) according to Examples and Comparative Examples of the present invention.

In the following Table 1, the embodiment shows a composite electronic device in which a capacitor is coupled to a side surface of an inductor according to an embodiment of the present invention. In Comparative Example 1, a power inductor is used alone. In Comparative Example 2, an inductor and a capacitor As shown in FIG.

frequency
(Frequency) 1MHz 3MHz 6 MHz 9MHz
Example

Ls (μH) 0.47 0.47 0.47 0.46 Q 38.5 29.8 24.1 18.8 SRF (MHz) 96

Comparative Example 1

Ls (μH) 0.47 0.46 0.46 0.47 Q 39.1 30.2 24.8 19.3 SRF (MHz) 121

Comparative Example 2

Ls (μH) 0.46 0.46 0.45 0.46 Q 25.6 22.0 15.2 12.3 SRF (MHz) 23

Referring to Table 1, an embodiment showing a composite electronic device in which a capacitor is coupled to a side surface of an inductor according to an embodiment of the present invention includes a frequency-dependent inductance Ls, a Q characteristic, and a self resonant frequency (SRF) The difference is not large when compared with Comparative Example 1 in which the power inductor is used singly.

On the other hand, in the case of the comparative example 2 in which the inductor and the capacitor are vertically coupled, the Q characteristic is lowered compared with the embodiment showing the composite electronic part in which the capacitor is coupled to the side surface of the inductor and the comparative example 1 using the power inductor alone, The frequency of the self-resonant frequency (SRF) shifts to the low-frequency region, and the range of use of the inductor is limited.

FIG. 21 is a graph showing a change in a self resonant frequency (SRF) according to an embodiment of the present invention and a comparative example.

Referring to FIG. 21, the first embodiment shows a composite electronic part in which a capacitor is coupled to a side surface of an inductor according to an embodiment of the present invention, and a ferrite sheet layer is inserted between the capacitor and the inductor. And the metal sheet layer is inserted between the inductors. In the comparative example 1, the power inductor is used alone, and in the comparative example 2, the inductor and the capacitor are coupled vertically.

Referring to the graphs, in the case of Embodiments 1 and 2 in which a ferrite sheet layer or a metal sheet layer is inserted between a capacitor and an inductor, a magnetic resonance frequency (SRF) of Comparative Example 1 using a power inductor alone Almost the same can be seen.

In addition, it can be seen that the inductance of Examples 1 and 2 is higher than that of Comparative Example 1.

22 is a graph showing changes in Q characteristics according to Examples and Comparative Examples of the present invention.

Referring to FIG. 22, Embodiment 1 shows a composite electronic component in which a capacitor is coupled to a side surface of an inductor according to an embodiment of the present invention, and a ferrite sheet layer is inserted between the capacitor and the inductor. And the metal sheet layer is inserted between the inductors. In the comparative example 1, the power inductor is used alone, and in the comparative example 2, the inductor and the capacitor are coupled vertically.

In the graphs of Examples 1 and 2 in which a ferrite sheet layer or a metal sheet layer was inserted between a capacitor and an inductor, Comparative Example 1 using a power inductor alone as a Q characteristic and Comparative Example 1 in which an inductor and a capacitor were combined vertically Which is higher than that of Example 2.

The present invention is not limited by the above-described embodiments and the accompanying drawings, but is intended to be limited only by the appended claims. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.

100, 700; Composite electronic parts
110, 210, 310, 410; Capacitor
120, 220, 320, 420; Inductor
121, 221, 321, 421; The magnetic sheet layer
121 ', 221', 321 ', 421'; Adhesive layer
130, 230, 330, 430; Complex
11, 211, 311, 411; Dielectric layer
21; The magnetic layer
31, 32, 231, 232, 233, 234, 331, 332, 333, 431, 432, 433, 434, 435, 436; Inner electrode
331a, 332a, 333a, 431a, 432a, 433a, 434a, 435a, 436a; lead
41; Conductive pattern
122; Magnetic material 123; Board
124; core
140; Coil part
151, 251, 351, 451, 451 '; Input terminal
152, 252, 352, 452, 452 '; Output terminal
153, 253, 353, 453, 453 '; Ground terminal
800; Mounting substrate
810; Printed circuit board
821, 822, 823; The first to third electrode pads
830; Soldering
300: Battery
400: first power stabilization part
500:
600: second power stabilization unit

Claims (18)

A composite body including a capacitor composed of a ceramic body in which a plurality of dielectric layers and first and second internal electrodes are arranged so as to face each other with the dielectric layer interposed therebetween, and an inductor composed of a magnetic body body including a coil portion;
An input terminal formed on a first end surface of the composite body and connected to a coil portion of the inductor;
A first output terminal formed at a second end surface of the composite body and connected to a coil portion of the inductor and a second output terminal formed at a second end surface of the composite body and connected to the first internal electrode of the capacitor Output terminal; And
And a ground terminal formed on at least one of an upper surface and a first end surface of the capacitor and connected to a second internal electrode of the capacitor, the capacitor being coupled to a side surface of the inductor, Wherein a magnetic substance sheet layer is inserted between the capacitors, and the coil portion is disposed parallel to the mounting surface of the composite body, and the magnetic flux direction of the coil portion is parallel to the lamination surface of the first and second internal electrodes .
The method according to claim 1,
Wherein the magnetic body body is in the form of a laminate of a plurality of magnetic substance layers formed with conductive patterns, and the conductive pattern constitutes the coil portion.
The method according to claim 1,
Wherein the inductor is a thin film type in which the magnetic body body includes an insulating substrate and a coil formed on at least one surface of the insulating substrate.
The method according to claim 1,
Wherein the magnetic body body is in the form of a core and a winding coil wound around the core.
The method according to claim 1,
Wherein the magnetic substance sheet layer comprises at least one magnetic powder selected from the group consisting of ferrite and metal magnetic powder having an average particle diameter of 15 mu m or less.
The method according to claim 1,
And an adhesive layer is further formed on both sides of the magnetic substance sheet layer.
A first capacitor composed of a ceramic body in which a plurality of dielectric layers and first and second internal electrodes are arranged so as to face each other with the dielectric layer interposed therebetween, a plurality of dielectric layers, and a third dielectric layer, A second capacitor formed of a ceramic body in which a fourth internal electrode is stacked, and an inductor composed of a magnetic body including a coil portion;
A first input terminal formed on a first end surface of the composite body and connected to a coil part of the inductor and a second input terminal formed on a first end surface of the composite body and connected to a first internal electrode of the first capacitor, An input terminal configured;
A first output terminal formed on a second end face of the composite body and connected to the coil part of the inductor and a second output terminal formed on a first end face of the composite body and connected to the third internal electrode of the second capacitor, An output terminal including; And
A first ground terminal formed on a second end face of the composite body and connected to a second internal electrode of the first capacitor and a second ground terminal formed on a second end face of the composite body, And a ground terminal including a first ground terminal and a second ground terminal, wherein the first and second capacitors are respectively coupled to both sides of the inductor, and a magnetic sheet layer is inserted between the inductor and the first and second capacitors Composite electronic components.
A composite body comprising a capacitor composed of a ceramic body having a plurality of dielectric layers and first to third internal electrodes disposed to face each other with the dielectric layer interposed therebetween, and an inductor made of a magnetic body including a coil portion;
A first input terminal formed on a first end face of the composite body and connected to a coil portion of the inductor and a second input terminal formed on a first end face of the composite body and connected to a first internal electrode of the capacitor, An input terminal;
A first output terminal formed on a second end surface of the composite body and connected to a coil part of the inductor and a second output terminal formed on a second end surface of the composite body and connected to a third internal electrode of the capacitor, Output terminal; And
And a ground terminal formed on at least one of an upper surface and a first side surface of the capacitor and connected to a second internal electrode of the capacitor, the capacitor being coupled to a side surface of the inductor, Wherein a magnetic substance sheet layer is inserted between the capacitors, the coil portion is disposed parallel to the mounting surface of the composite body, and the magnetic flux direction of the coil portion is parallel to the lamination surface of the first to third internal electrodes .
9. The method of claim 8,
Wherein the first internal electrode has a lead exposed to a first end face of the composite, the second internal electrode has a lead exposed to a first side of the composite, and the third internal electrode has a second end face And the lead is exposed.
A first capacitor made of a ceramic body in which first to third internal electrodes are arranged so as to face each other with a plurality of dielectric layers sandwiching the dielectric layer therebetween, a plurality of dielectric layers, and a fourth dielectric layer A second inductor composed of a ceramic body with a sixth internal electrode laminated thereon, and a magnetic body body including a coil portion; and a second inductor coupled to the first inductor and the second inductor;
A first input terminal formed on a first end surface of the composite body and connected to a coil portion of the first inductor, a second input terminal formed on a first end surface of the composite body and connected to the coil portion of the second inductor, A third input terminal formed on the first end face of the composite body and connected to the first internal electrode of the first capacitor and a second input terminal formed on the first end face of the composite body, An input terminal including four input terminals;
A first output terminal formed on a second end face of the composite body and connected to a coil part of the first inductor, a second output terminal formed on a second end face of the composite body and connected to the coil part of the second inductor, A third output terminal formed on the second end face of the composite body and connected to the third internal electrode of the first capacitor and a second output terminal formed on the second end face of the composite body, An output terminal including four output terminals; And
A first ground terminal formed on at least one of an upper surface and a first side of the first capacitor of the composite body and connected to a second internal electrode of the first capacitor and a second ground terminal connected to the upper surface and the first surface of the second capacitor, Wherein the first inductor and the second inductor are adjacent to each other, and the first inductor and the second inductor are adjacent to each other, and the first inductor and the second inductor are adjacent to each other, A capacitor is coupled to a side surface of the first inductor, the second capacitor is coupled to a side surface of the second inductor, and a magnetic sheet layer is inserted between the first and second inductors and the first and second capacitors Composite electronic components.
An input terminal receiving power converted by the power management unit;
A capacitor made of a ceramic body in which first and second internal electrodes are stacked with a plurality of dielectric layers and dielectric layers interposed therebetween so as to stabilize the power source, and an inductor composed of a magnetic body body including a coil part are combined A power stabilizer coupled to the side of the inductor and having a composite body in which a magnetic sheet layer is interposed between the inductor and the capacitor;
An output terminal for supplying the stabilized power source; And
A ground terminal for grounding;
Wherein the coil portion is disposed parallel to the mounting surface of the composite, and the magnetic flux direction of the coil portion is parallel to the lamination surface of the first and second internal electrodes.
12. The method of claim 11,
Said input terminal being formed in a first end face of said composite,
Wherein the output terminal is formed on a second end surface of the composite and has a first output terminal connected to the coil portion of the inductor and a second output terminal formed on the second end surface of the composite, Output terminal,
Wherein the ground terminal is formed on at least one of an upper surface and a first end surface of the capacitor and is connected to a second internal electrode of the capacitor.
12. The method of claim 11,
Wherein the magnetic body body is in the form of a laminate of a plurality of magnetic substance layers formed with conductive patterns, and the conductive pattern constitutes the coil portion.
12. The method of claim 11,
Wherein the inductor is a thin film type in which the magnetic body body includes an insulating substrate and a coil formed on at least one surface of the insulating substrate.
12. The method of claim 11,
Wherein the magnetic body body is in the form of a core and a winding coil wound around the core.
12. The method of claim 11,
Wherein the magnetic substance sheet layer comprises at least one magnetic powder selected from the group consisting of ferrite and metal magnetic powder having an average particle diameter of 15 mu m or less.
12. The method of claim 11,
And an adhesive layer is further formed on both sides of the magnetic substance sheet layer.
A printed circuit board having three or more electrode pads on the top;
A composite electronic component according to any one of claims 1, 7, 8, 10, and 11 provided on the printed circuit board; And
And soldering for connecting the electrode pad and the composite electronic part.

Images