CN108022731A - Coupling inductance and the VRM Voltage Regulator Module including coupling inductance - Google Patents
Coupling inductance and the VRM Voltage Regulator Module including coupling inductance Download PDFInfo
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- CN108022731A CN108022731A CN201710313185.5A CN201710313185A CN108022731A CN 108022731 A CN108022731 A CN 108022731A CN 201710313185 A CN201710313185 A CN 201710313185A CN 108022731 A CN108022731 A CN 108022731A
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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
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of semiconductor or other solid state devices
- H01L25/03—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10D, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10D, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/07—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10D, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group subclass H10D
- H01L25/072—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10D, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group subclass H10D the devices being arranged next to each other
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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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- Computer Hardware Design (AREA)
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- Inverter Devices (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The present invention provides a kind of coupling inductance and the VRM Voltage Regulator Module including the coupling inductance.The coupling inductance includes magnetic core, the magnetic core includes the first magnetic pole, the second magnetic pole, the 3rd magnetic pole and two cover boards extended in a second direction extended in a first direction, first magnetic pole is arranged between the second magnetic pole and the 3rd magnetic pole, and described two cover boards connect the end of first magnetic pole, the second magnetic pole and the 3rd magnetic pole respectively；And winding, the winding include the first winding and the second winding, rotating around in first magnetic pole, first winding and second winding are separated from one another in a first direction.Wherein, air gap is provided with the magnetic core, is not stacked each other between the winding and the air gap.Coupling inductance according to the present invention has the advantages that highly thin, leakage magnetic flux is small, processing procedure is simple.
Description
Technical field
The present invention relates to a kind of coupling inductance and the VRM Voltage Regulator Module including coupling inductance, more specifically, the present invention
Being related to a kind of has the advantages that highly thin, leakage magnetic flux is small, processing procedure is simple coupling inductance and the voltage including coupling inductance are adjusted
Module.
Background technology
In recent years, with the development of the technologies such as data center, artificial intelligence, central processing unit (CPU), graphics processor
(GPU) and the operating rates of all kinds of integrated chips (IC) is getting faster, and operating current is increasing, to its power supply module voltage tune
The requirement of the power density of section module (VRM), efficiency, dynamic property etc. is more and more harsh, and the design to VRM proposes non-
Often high challenge.In VRM Voltage Regulator Module, the volume of outputting inductance is often that accounting is highest, while the selection of inductance sensibility reciprocal
Also the efficiency and dynamic property of whole VRM is directly affected.It is to reduce inductance volume, raising efficiency and dynamic using counter coupled inductance
The effective means of performance, and the hot spot of VRM designs at present.However, conventional counter coupled inductance height is higher, it can not meet one
Highly there is the application scenario of requirements at the higher level to VRM a bit.
The content of the invention
To overcome problem present in correlation technique, the embodiment of the present disclosure provides a kind of coupling inductance and including coupling inductance
VRM Voltage Regulator Module, the technical solution is as follows：
According to an aspect of the present invention, there is provided a kind of coupling inductance, including：
Magnetic core, the first magnetic pole that the magnetic core includes extending in a first direction, the second magnetic pole, the 3rd magnetic pole and along second
Two cover boards of direction extension, first magnetic pole is arranged between second magnetic pole and the 3rd magnetic pole, described two
Cover board connects the end of first magnetic pole, second magnetic pole and the 3rd magnetic pole respectively；And
Winding, the winding include the first winding and the second winding, rotating around in first magnetic pole, described first
Winding and second winding are separated from one another in said first direction,
Wherein, air gap is provided with the magnetic core, is not stacked each other between the winding and the air gap.
Preferably, the air gap is separately positioned in second magnetic pole and the 3rd magnetic pole.
Preferably, the air gap is arranged in first magnetic pole, and first winding and described second is around component
Not Wei Yu the air gap both sides.
Preferably, first winding and second winding are close to first magnetic pole.
Preferably, the both ends of first winding and second winding form two Surface Mount pads, the Surface Mount respectively
Each in the same plane in pad, the plane is flat parallel to being made of the first direction and the second direction
Face.
Preferably, the winding by the flat flat linear being around in first magnetic pole into.
Preferably, in the plane that the first direction and the second direction are formed, the projection tool of the coupling inductance
There is centrosymmetric shape, and the winding and the air gap are central symmetry distribution.
Preferably, on the first direction and the third direction of the second direction, the coupling inductance
Highly it is less than 6mm.
Preferably, on the first direction and the third direction of the second direction, first magnetic pole
Highly it is less than the height of second magnetic pole, the 3rd magnetic pole or the cover board.
Preferably, the basal surface of first magnetic pole, second magnetic pole, the 3rd magnetic pole and the cover board is located at
On same plane.
Preferably, the pin portions of the winding form external pad, and the externally pad has meander-shaped.
Preferably, first magnetic pole forms a limit body, and the limit body is preventing the winding from moving.
Preferably, first winding and second winding by flat linear into, first winding, described second around
Group, second magnetic pole, the upper surface of the 3rd magnetic pole and the cover board are in the same plane.
According to another aspect of the present invention, there is provided a kind of VRM Voltage Regulator Module, including：
Coupling inductance according to the present invention, first winding have the first terminal and Second terminal, second winding
With third terminal and forth terminal, the Second terminal of first winding and the forth terminal of second winding
It is electrically connected to each other；
First switch unit, is connected to the first terminal of first winding；And
Second switch unit, is connected to the third terminal of second winding.
Preferably, wherein,
The first terminal is formed in below second magnetic pole,
The third terminal is formed in below the 3rd magnetic pole, and
The Second terminal and the forth terminal are formed in below first magnetic pole.
Preferably, when electric current flows into first winding and described the from the first terminal and the third terminal respectively
During two windings, the magnetic flux that first winding and second winding are formed respectively has opposite side in first magnetic pole
To.
Preferably, bending angle and/or the forth terminal of the Second terminal relative to the body of first winding
Bending angle relative to the body of second winding is less than 90 degree.
Preferably, the first switch unit and the second switch unit are located under the basal surface of the coupling inductance
Side.
Two-way coupling inductance according to the present invention and the VRM Voltage Regulator Module including coupling inductance, have following several respects
Advantage：First, height is very thin, suitable for highly there is the application scenario of strict demand.Second, leakage magnetic flux is small, suitable for surrounding
There are other conductors or surrounding to have the sensitive signal occasion being easily disturbed.3rd, processing procedure is simple, and winding can be preforming, without
Bent with magnetic core and damage magnetic core.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Attached drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.
Figure 1A is a kind of schematic diagram of two-way coupling inductance of the prior art；
Figure 1B is the stereogram of the winding in the two-way coupling inductance in Figure 1A；
Fig. 2A to Fig. 2 I is a kind of schematic diagram of two-way coupling inductance according to the present invention；
Fig. 3 schematically shows a kind of main flux distribution of two-way coupling inductance according to the present invention；
Fig. 4 is the schematic diagram of two-way coupling inductance according to another embodiment of the present invention；
Fig. 5 is the schematic diagram of two-way coupling inductance according to another embodiment of the present invention；
Fig. 6 is schematically shown is arranged at showing above two-way coupling inductance by radiator according to an embodiment of the invention
It is intended to；
Fig. 7 is the schematic diagram of two-way coupling inductance according to another embodiment of the present invention；
Fig. 8 is the explosive view of the two-way coupling inductance shown in Fig. 7；
Fig. 9 is the schematic diagram of two-way coupling inductance according to another embodiment of the present invention；
Figure 10 is the circuit diagram of two-phase VRM according to an embodiment of the invention a kind of；
Figure 11 is the topology layout figure of two-phase VRM according to an embodiment of the invention a kind of；
Figure 11 A are the structure diagrams of winding according to an embodiment of the invention；
Figure 11 B are the structure diagrams of winding in accordance with another embodiment of the present invention；
Figure 12 schematically shows the magnetic flux produced when the VRM in Figure 11 is powered in two-way coupling inductance；And
Figure 13 A and Figure 13 B are a kind of schematic diagrames of two-way coupling inductance according to an embodiment of the invention.
Pass through above-mentioned attached drawing, it has been shown that the clear and definite embodiment of the disclosure, will hereinafter be described in more detail.These attached drawings
It is not intended to limit the scope of disclosure design by any mode with word description, but is by reference to specific embodiment
Those skilled in the art illustrate the concept of the disclosure.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During attached drawing, unless otherwise indicated, the same numbers in different attached drawings represent the same or similar key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects be described in detail in claims, the disclosure.
Figure 1A is a kind of schematic diagram of two-way coupling inductance of the prior art, and Figure 1B is the two-way coupling inductance in Figure 1A
In winding stereogram.Referring to Figure 1A and Figure 1B, two-way coupling inductance 100 includes magnetic core 102 and two windings 104, its
In two windings 104 be respectively wound around on magnetic core 102.Wherein, in the two-way coupling inductance 100, two windings 104 go out foot
(that is, the pin that winding is connected to external circuit) below inductance, four inductance pins electric current in same plane, winding produces
Plane where raw magnetic flux (as shown in dotted line in Figure 1A) is perpendicular to the plane where inductance pin.In this case, it is whole
The height H of a two-way coupling inductance 100 will include two layers of magnetic core height (H1, H3) and two layers of winding height (H2, H4), therefore two
Be coupled inductance 100 whole height it is higher.
In order to further reduce the whole height of coupling inductance, the present invention provides a kind of knot of new two-way coupling inductance
Structure.Fig. 2A to Fig. 2 I is a kind of schematic diagram of two-way coupling inductance according to the present invention.Fig. 3 is schematically shown according to this hair
A kind of main flux distribution of bright two-way coupling inductance.Referring to Fig. 2A to Fig. 2 I and Fig. 3, two-phase according to embodiments of the present invention
Coupling inductance 200 includes magnetic core 210 and winding 220.
Magnetic core 210 can include first magnetic pole 212 of (such as x directions) extension, the second magnetic pole 214, the in the first direction
Two cover boards 218 that three magnetic poles 216 and in a second direction (such as y directions) extend, the first magnetic pole 212 are arranged at the second magnetic pole
214 and the 3rd between magnetic pole 216, and described two cover boards 218 connect the first magnetic pole 212, the second magnetic pole 214 and the 3rd magnetic pole respectively
216 end.
According to the present embodiment, first direction (such as x directions) is shown as the first magnetic pole 212, the second magnetic pole 214 and the 3rd
Magnetic pole 216 extends the direction, and second direction (such as y directions) is shown as cover board 218 and extends the direction.But this
Field technology personnel should be appreciated that first direction and second direction (or x directions and y directions) are intended merely to facilitate and describe this hair
The bright and schematic direction that uses, it is specific in coordinate system (such as cartesian coordinate system) that it is not limiting as all directions
Direction or the order in these directions.For example, in other embodiments of the invention, first direction can be referred to as coupling inductance
Width, second direction can be referred to as the length direction of coupling inductance.But the present invention is not limited thereto.
Winding 220 can include the first winding 222 and the second winding 224, rotating around in first magnetic pole 212,
First winding 222 and second winding 224 are separated from one another in a first direction.According to the present embodiment, the first winding
222 and second winding 224 can have the same or similar structure, but the present invention is not limited thereto.
Air gap 230 is also provided with magnetic core 210, to realize certain self-induction and prevent saturation.
In the present embodiment, it is not stacked each other between winding 220 and the air gap 230.For example, with reference to Fig. 2A and Fig. 2 B,
Air gap 230 is arranged in the second magnetic pole 214 and the 3rd magnetic pole 216, and winding 220 is arranged in the first magnetic pole 212.Therefore,
According to the structure, it is not stacked each other between winding 220 and air gap 230.Further, since winding 220 is located at not respectively with air gap 230
It is not stacked each other in same magnetic pole and between winding 220 and air gap 230, therefore 220 can be formed to be close to what is wound
Magnetic pole (such as first magnetic pole), the caused loss on winding without regard to air gap dispersing flux, further to reduce inductance
Overall height.
According to the present embodiment, the first winding 222 and the second winding 224 are arranged in the first magnetic pole 212 and each other
Between be spaced in intervals in a first direction.By varying the first winding 222 and the second winding 224 in a first direction between
Away from length, the leakage inductance of two-way coupling inductance 200 can be adjusted.
The both ends of first winding 222 and the second winding 224 can be respectively arranged with two Surface Mount pads, for by two-phase
Coupling inductance 200 is connected to external circuit (for example, being connected to printing board PCB).For example, with reference to Fig. 2 B, the first winding 222
Two Surface Mount pads 242 and 244 and two Surface Mount pads 246 and 248 of the second winding 224 be formed at grade,
The plane is parallel to the plane (for example, x-y plane) being made of first direction and second direction.Inductance compared to card format draws
Foot, the inductance pin of Surface Mount form are conducive to the decline of inductance overall height.
According to the present embodiment, the electric current flowed in winding 220 can form magnetic flux.By the first winding 222 and second around
The magnetic flux to intercouple that group 224 produces is defined as main flux, as shown in phantom in Figure 3.In the present embodiment, can by first around
The magnetic flux only with itself current coupling that 222 and second winding 224 of group produces is defined as leakage magnetic flux (not shown in Fig. 3).According to
Structure shown in Fig. 2A to Fig. 2 I understands, two Surface Mount pad 242 Hes of the plane where main flux parallel to the first winding 222
244 and second winding 224 two Surface Mount pads 246 and 248 where plane (for example, x-y plane).In this case,
The overall height of inductance is equal to the height (H2) of one layer of magnetic core, plus the height (H1, H3) of two layers of conductor, as shown in Figure 2 E.Phase
Main flux plane goes out the scheme of foot plane perpendicular to inductance than in the prior art, and the present embodiment can realize that lower inductance is always high
Degree.
Winding 220 can be by being set around the flat linear in the first magnetic pole 212 into referring to Fig. 2 D, flat wire is shown as
Conducting wire with rectangular cross sectional shape.In the present embodiment, the direction where the long side of the rectangle (that is, the shape of rectangular section)
Width referred to as flat wire, the direction where the short side of the rectangle are referred to as the thickness of flat wire.The flat wire is in the first magnetic
Canoe on column 212 is to be flat around that is, the width of flat wire is so favourable parallel to first direction (such as x directions)
In the reduction of inductance overall height.
According to the present embodiment, it is preferable that two-way coupling inductance 200 where Surface Mount pad 242-248 plane (for example,
X-y plane) on projection be centrosymmetric image, the distribution of winding 220 and air gap 230 is all centrosymmetric distribution, is conducive to
Two phase inductance sensibility reciprocals it is symmetrical.
In addition, on processing procedure, magnetic core 210 can be formed by the sub- core combination of polylith, for example two pieces have " E " type shape
Sub- magnetic core, as shown in Figure 2 C.In addition, as shown in Figure 2 D, winding 220 can be by advance comprising, then by the winding 220 after shaping
Assembled with magnetic core 210.Therefore, during two-way coupling inductance 200 is manufactured, without to being wrapped in magnetic core 210
On winding 220 bent, thus avoid when bending winding 220 damage magnetic core 210 risk.
With reference to Fig. 2 F to Fig. 2 I, it illustrates the specific example of the pin 250 of winding 220.In Fig. 2 F to Fig. 2 I, pin
Formed with external pad 251 on 250, for winding 220 is electrically connected with external circuit.Referring to Fig. 2 F and Fig. 2 G, pin 250
External pad 251 be formed as with meander-shaped, wherein external pad 251 is formed as hollow meander-shaped.For example, it can lead to
Bending or punching press are crossed for forming the sheet metal of pin 250 to make external pad 251 be formed as hollow meander-shaped.At another
In embodiment, referring to Fig. 2 H and Fig. 2 I, external pad 251 is formed as solid meander-shaped.For example, can be by pin 250
It is upper to form extra metal coupling to make external pad 251 be formed as solid meander-shaped.In the present embodiment, external pad
251 are formed towards the bend external of winding 220.In other words, external pad 251 is formed towards the direction away from the first magnetic pole
Bending.According to the present embodiment, the external pad 251 of meander-shaped can effectively increase the welding of pin 250 and external circuit
Contact area, so as to be conducive to improve the conductive capability and mechanical strength of junction.
According to an embodiment of the invention, the height of two-way coupling inductance 200 can be formed to be less than 6mm.
Fig. 4 is the schematic diagram of two-way coupling inductance according to another embodiment of the present invention.With reference to Fig. 4, in the two-phase coupling
Close in inductance 400, on the direction of the plane (such as x-y plane) where first direction and second direction (such as z side
To), the height of cover board 418 is more than the height of the first magnetic pole 412, the second magnetic pole 414 and the 3rd magnetic pole 416.So be conducive into
One step improves space availability ratio, and less height or area can be still obtained after assembling winding.Other sides of the present embodiment
Face is same or similar with previous embodiment, therefore omits detailed description thereof.
Fig. 5 is the schematic diagram of two-way coupling inductance according to another embodiment of the present invention.Reference Fig. 5, the present embodiment
Difference between two-way coupling inductance 500 and the two-way coupling inductance of previous embodiment essentially consists in：During air gap 530 is formed on
On column (such as first magnetic pole 512).The other side of the present embodiment and previous embodiment are same or similar, therefore omit to them
Detailed description.
With reference to Fig. 5, air gap 530 is located at the centre position of the first magnetic pole 512, and the first winding 522 and the second winding 524 are located at
(such as x directions) avoids air gap 530 in a first direction for the both ends of first magnetic pole 512, the first winding 522 and the second winding 524, i.e.,
First winding 522 and the second winding 524 do not coat air gap 530.In other words, the first winding 522 and the second winding 524 are respectively by shape
Into in the both sides of air gap 530 and not overlapping with air gap 530.Therefore, the first winding 522 and the second winding 524 still can be close to
First magnetic pole 512 is formed, and is conducive to the decline of inductance overall height.In addition compared to air gap in side column (such as the second magnetic pole 514
With the 3rd magnetic pole 516) embodiment, a key benefit of the air gap in center pillar be leakage magnetic flux can smaller, so as to be conducive to subtract
Small electromagnetic interference.
Fig. 6 is schematically shown is arranged at showing above two-way coupling inductance by radiator according to an embodiment of the invention
It is intended to.In figure 6, two-way coupling inductance 600 is welded on substrate 660 (for example, printing board PCB), and in two-phase
The top of coupling inductance 600 is provided with radiator 650.In general, radiator 650 is formed by conductors such as aluminium or copper, therefore this
In the case of, the leakage magnetic flux that two-way coupling inductance 600 produces can cause eddy-current loss in the conductor for forming radiator 650.
In view of the above-mentioned problems, in the present embodiment, by each two-way coupling inductance 600 be formed as having with according to foregoing reality
The similar structure of the structure of the two-way coupling inductance 500 of example is applied, that is, designs air gap in the first magnetic pole, therefore can further reduce
Leakage magnetic flux, so as to reduce due to eddy-current loss caused by leakage magnetic flux.
Fig. 7 is the schematic diagram of two-way coupling inductance according to another embodiment of the present invention.Fig. 8 is the two-phase shown in Fig. 7
The explosive view of coupling inductance.Referring to Fig. 7 and Fig. 8, the two-way coupling inductance 700 of the present embodiment and the two-way coupling of previous embodiment
Difference between inductance essentially consists in：In two-way coupling inductance 700, perpendicular to flat where first direction and second direction
On the direction in face (such as x-y plane) (such as z directions), the height of the first magnetic pole 712 is less than the second magnetic pole 714, the 3rd magnetic pole
716 or the height of cover board 718.So be conducive to further improve space availability ratio, reduce height or area.The present embodiment
Other side is same or similar with previous embodiment, therefore omits detailed description thereof.In addition, show in figures 7 and 8
, the height of the first magnetic pole 712 is less than the height of the second magnetic pole 714, the 3rd magnetic pole 716 and cover board 718, and the second magnetic pole
714th, the 3rd magnetic pole 716 and the height of cover board 718 are mutually the same.But the present invention is not limited thereto, the second magnetic pole 714 and the 3rd magnetic
The height of column 716 can also be different from the height of cover board 718, for example, the height of the second magnetic pole 714 and/or the 3rd magnetic pole 716
The height of cover board 718 can be less than.
In addition, referring to Fig. 7 and Fig. 8, the end of the first winding 722 and the second winding 724 can bend inwards, so that every
Two Surface Mount pads are formed on a winding respectively.More specifically, the end of the first winding 722 and the second winding 724 can court
Bent to the center position of the first magnetic pole 712, so that Surface Mount pad is respectively formed on the basal surface of the first magnetic pole 712.Root
According to the embodiment of the present invention, the basal surface of the first magnetic pole 712 represent the first magnetic pole 712 towards under two-way coupling inductance 700
Side (that is, when two-way coupling inductance 700 is mounted to for example on PCB, the direction of the direction of two-way coupling inductance 700 PCB)
Surface.
According to the present embodiment, the first magnetic pole 712, the second magnetic pole 714, the basal surface of the 3rd magnetic pole 716 and cover board 718
(each basal surface is defined according to the mode identical with the basal surface of the first magnetic pole 712) can be in the same plane.
According to the present embodiment, the first winding 722, the second winding 724, the second magnetic pole 714, the 3rd magnetic pole 716 and cover board
718 upper surface can be in the same plane.
Fig. 9 is the schematic diagram of two-way coupling inductance according to another embodiment of the present invention.Referring to Fig. 9, with Fig. 7 and Fig. 8
Shown in embodiment it is different, the first winding 922 and the second winding 924 of two-way coupling inductance 900 have respectively to be directed away from
The end of the center position bending of first magnetic pole 912, to form Surface Mount pad respectively.Specifically, the first winding 922 has court
The end bent to the second magnetic pole 914, so as to form the Surface Mount pad on the basal surface of the second magnetic pole 914.In addition, second
Winding 924 has the end towards the bending of the 3rd magnetic pole 916, so as to form the Surface Mount on the basal surface of the 3rd magnetic pole 916
Pad.Similar with the basal surface of the first magnetic pole 912, the basal surface of the second magnetic pole 914 and the 3rd magnetic pole 916 represents the second magnetic respectively
The surface of the lower section towards two-way coupling inductance 900 of 914 and the 3rd magnetic pole 916 of column.
Figure 10 is a kind of circuit diagram of two-phase voltage adjustment module (VRM) according to an embodiment of the invention, Tu11Shi
The topology layout figure of two-phase VRM according to an embodiment of the invention a kind of, and Figure 12 are schematically shown when in Figure 11
VRM magnetic fluxs for being produced in two-way coupling inductance when being powered.
Input voltage V1 is transformed to output voltage V2, powering load referring to Figure 10, two-phase VRM.In order to realize compared with
Big output current, the VRM are in parallel realization by two.The VRM includes two switch elements and a two-way coupling inductance.Institute
State coupling inductance and include four terminals, the first end of inductance is connected with one end SW1 of first switch unit, the 3rd end of inductance with
One end SW2 of second switch unit is connected, and the second end of inductance and the 4th end are directly electrically connected, as whole voltage
The public output V2 of adjustment module.In order to realize the output ripple of smaller, misphase work, i.e., usual institute are understood between different phases
The crisscross parallel said, as shown in FIG., mutual deviation 180 degree between two-phase.
Two-phase VRM according to the present invention is further described below with reference to Figure 11.With reference to Figure 11, two-phase VRM 1000
Including：Two-way coupling inductance 1110, including the first winding 1122 and the second winding 1124, wherein the first winding 1122 has first
Terminal 11221 and Second terminal, the second winding 1124 have third terminal 11241 and forth terminal 11242.
Two-phase VRM 1000 is further included：One end SW1 of first switch unit, is connected to the first terminal of the first winding 1122
11221；One end SW2 of second switch unit, is connected to the third terminal 11241 of the second winding 1124；And an output terminal V2,
It is electrically connected the Second terminal of the first winding 1122 and the forth terminal 11242 of the second winding 1124.
According to the present embodiment, two-way coupling inductance 1110 can have similar to the two-way coupling inductance 900 shown in Fig. 9
Structure.Specifically, the first terminal 11221 of two-way coupling inductance 1110 can be formed in the of two-way coupling inductance 1110
The lower section of two magnetic poles, the third terminal 11241 of two-way coupling inductance 1110 are formed in the 3rd magnetic pole of two-way coupling inductance 1110
Lower section, the Second terminal and forth terminal 11242 of two-way coupling inductance 1110 are formed in the first of two-way coupling inductance 1110
The lower section of magnetic pole.This terminal set-up mode, can preferably match the terminal position of counter coupled application lower switch unit, such as scheme
One end SW1 of first switch unit in 11, shown in one end SW2 and output terminal V2 of second switch unit.
In addition, the Second terminal and forth terminal 11242 of the two-way coupling inductance 1110 being connected to each other can be connected to
The output terminal V2 of two-phase VRM 1000.
In addition, with reference to Figure 12, when by the first terminal 11221 and third terminal 11241 respectively to 1122 He of the first winding
When second winding 1124 provides the first electric current I1 and the second electric current I2, the first electric current I1 and the second electric current I2 are produced in the first magnetic pole
Raw first magnetic flux Ф 1 and the second magnetic flux Ф 2.As shown in figure 12, the first magnetic flux Ф 1 and the second magnetic flux Ф 2 has reciprocal
Direction.
According to constructed above, the terminal phase of the first terminal 11221 and first switch cell S W1 of two-way coupling inductance 1110
Connection, the third terminal 11241 of two-way coupling inductance 1110 are connected with the terminal of switch element SW2, the Second terminal of inductance
The output terminal that two-phase VRM 1000 is connected to forth terminal 11242 realizes directly electric connection.Therefore, according to this implementation
The pin mode of the inductance of example can easily realize the interconnection with switch element part, reduce junction loss.
In the processing procedure of the coupling inductance of each embodiment according to the present invention, winding can with advance comprising, then with magnetic
Core is assembled.For example, Figure 11 A are the structure diagrams of winding according to an embodiment of the invention, Figure 11 B are according to this hair
The structure diagram of the winding of another bright embodiment.With reference to Figure 11 A and Figure 11 B, which schematically illustrates coupling inductance
The schematic diagram of winding 1124 in 1110, but the present invention is not limited thereto, the structure of winding 1124 can also be applied to according to this
The winding of invention other embodiments.
The side view of the winding 1124 of advance comprising is shown in Figure 11 A.Wherein, winding 1124 is by advance comprising,
With form the winding body of U-shaped and be formed in U-shaped winding body both ends pin 11241 and 11242.By by winding
1124 are assemblied together with the core structure being additionally formed, and can form the coupling inductance of previous embodiment according to the present invention
1110.In another embodiment, magnetic core has very thin thickness, therefore the first magnetic pole is difficult often to make chamfering, assembling around
During group, the forth terminal 11242 below the first magnetic pole is relative to the bending angle A of winding body (such as Figure 11 A and Figure 11 B institutes
Showing, bending angle A represents the angle being connected between the part of forth terminal 11242 of forth terminal 11242 and winding body,
That is, the angle that forth terminal 11242 is bent relative to winding body) location is easy and the first magnetic pole interferes,
Influence the coplanarity of winding terminals.It is thus preferable to as shown in Figure 11 B, the forth terminal 11242 below the first magnetic pole is opposite
Become 90 degree in the bending of winding body is angular.Preferably, above-mentioned bending angle A is formed 75 degree.Similarly, positioned at the first magnetic
Second terminal below column can also be formed as having similar bending angle.In one embodiment, Second terminal and the 4th end
Son can be acute angle relative to the bending angle of winding body, and can have same angle.
Figure 13 A and Figure 13 B are a kind of schematic diagrames of two-way coupling inductance according to an embodiment of the invention.With reference to figure
13A and Figure 13 B, form a limit body 1110, limit body in the first magnetic pole according to the two-way coupling inductance of the present embodiment
1110 preventing winding 1120 from moving.Foregoing implementation is referred to according to the other structures of the two-way coupling inductance of the present embodiment
Example, therefore will not be described in great detail herein.
More specifically, with reference to Figure 13 A and Figure 13 B, limit body 1110 is formed in the first magnetic pole close to the end of air gap position
Put so that the gross area (that is, the sum of the two area) of 1110 and first magnetic pole of limit body in a second direction is more than the first magnetic pole
Area of section in a second direction.In this case, limit body 1110 is prevented for example by way of being contacted with winding 1120
Only winding 1120 moves.Limit body 1110 can be integrally formed with corresponding first magnetic pole, or can be additionally formed this
In first magnetic pole.Limit body 1110 can be formed by the material identical with magnetic pole, or can also be formed from different materials.
In the present embodiment, due to the setting of limit body 1110, the assembling position of winding 1120 can be readily determined in assembling process,
So as to improve the efficiency of assembling of inductance.In addition, in the case where forming limit body 1110 using magnetic material, limit can also be utilized
Position body 1110 adjusts leakage inductance.In addition, limit body 1110 can be formed with curved surface, in this case, also
It can reduce or prevent the abrasion in an assembling process between winding 1120 and limit body 1110.But the present invention is not limited thereto,
Limit body 1110 can have the shape in addition to the shape shown in Figure 13 A and Figure 13 B, as long as it can prevent winding
1120 movements；Limit body can also be located at the second magnetic pole or the 3rd magnetic pole, the present invention are not limited thereto.
The two-way coupling inductance that each embodiment provides according to the present invention at least has the advantages that following several respects：First,
Height is very thin, suitable for highly there is the application scenario of strict demand.Second, leakage magnetic flux is small, has other conductors suitable for surrounding
Or surrounding has the sensitive signal occasion being easily disturbed.3rd, processing procedure is simple, and winding can be preforming, without with magnetic core into
Row bends and damages magnetic core.
Those skilled in the art will readily occur to the disclosure its after considering specification and putting into practice invention disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principle of the disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope and spirit of the disclosure are by appended
Claim is pointed out.
It should be appreciated that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by appended claim.
Claims (18)
1. a kind of coupling inductance, including：
Magnetic core, the magnetic core include the first magnetic pole, the second magnetic pole, the 3rd magnetic pole and in a second direction extended in a first direction
Two cover boards of extension, first magnetic pole are arranged between second magnetic pole and the 3rd magnetic pole, described two cover boards
The end of first magnetic pole, second magnetic pole and the 3rd magnetic pole is connected respectively；And
Winding, the winding include the first winding and the second winding, rotating around in first magnetic pole, first winding
It is separated from one another in said first direction with second winding,
Wherein, air gap is provided with the magnetic core, is not stacked each other between the winding and the air gap.
2. coupling inductance as claimed in claim 1, wherein, the air gap is separately positioned on second magnetic pole and the described 3rd
In magnetic pole.
3. coupling inductance as claimed in claim 1, wherein, the air gap is arranged in first magnetic pole, and described
One winding and second winding are located at the both sides of the air gap respectively.
4. such as the coupling inductance any one of claim 1-3, wherein, first winding and second winding are close to
First magnetic pole.
5. such as the coupling inductance any one of claim 1-3, wherein, the two of first winding and second winding
Hold and form two Surface Mount pads respectively, each in the same plane in the Surface Mount pad, the plane is parallel to by institute
State the plane of first direction and second direction composition.
6. such as the coupling inductance any one of claim 1-3, wherein, the winding is around in first magnetic pole by flat
Flat linear into.
7. such as the coupling inductance any one of claim 1-3, wherein, in the first direction and the second direction structure
Into plane in, during the projection of the coupling inductance has centrosymmetric shape, and the winding and the air gap are
The heart is symmetrical.
8. such as the coupling inductance any one of claim 1-3, wherein, perpendicular to the first direction and described second
On the third direction in direction, the height of the coupling inductance is less than 6mm.
9. such as the coupling inductance any one of claim 1-3, wherein, perpendicular to the first direction and described second
On the third direction in direction, the height of first magnetic pole is less than second magnetic pole, the 3rd magnetic pole or the cover board
Height.
10. coupling inductance as claimed in claim 9, wherein, first magnetic pole, second magnetic pole, the 3rd magnetic pole
And the basal surface of the cover board is in the same plane.
11. coupling inductance as claimed in claim 10, wherein, first winding and second winding are by flat linear
Into the upper surface position of, first winding, second winding, second magnetic pole, the 3rd magnetic pole and the cover board
In on same plane.
12. such as the coupling inductance any one of claim 1-3, wherein, the pin portions of the winding are formed to outside weld
Disk, the externally pad have meander-shaped.
13. such as the coupling inductance any one of claim 1-3, wherein, first magnetic pole forms a limit body, described
Limit body is preventing the winding from moving.
14. a kind of VRM Voltage Regulator Module, including：
Coupling inductance as described in any one of claim 1-13, first winding have the first terminal and second end
Son, second winding have third terminal and a forth terminal, the Second terminal of first winding with described second around
The forth terminal of group is electrically connected to each other；
First switch unit, is connected to the first terminal of first winding；And
Second switch unit, is connected to the third terminal of second winding.
15. VRM Voltage Regulator Module as claimed in claim 14, wherein,
The first terminal is formed in below second magnetic pole,
The third terminal is formed in below the 3rd magnetic pole, and
The Second terminal and the forth terminal are formed in below first magnetic pole.
16. VRM Voltage Regulator Module as claimed in claim 14, wherein, when electric current is respectively from the first terminal and the described 3rd
Terminal flows into first winding and during second winding, the magnetic flux that first winding and second winding are formed respectively
There is opposite direction in first magnetic pole.
17. VRM Voltage Regulator Module as claimed in claim 14, wherein, the Second terminal relative to first winding sheet
The bending angle of body and/or the forth terminal are less than 90 degree relative to the bending angle of the body of second winding.
18. the VRM Voltage Regulator Module as described in any one of claim 14-17, wherein, the first switch unit and institute
Second switch unit is stated to be located at below the basal surface of the coupling inductance.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/920,548 US10242791B2 (en) | 2016-10-28 | 2018-03-14 | Coupled-inductor module and voltage regulating module comprising the same |
| US16/259,721 US10438736B2 (en) | 2016-10-28 | 2019-01-28 | Magnetic component and manufacturing method thereof |
| US16/527,829 US10643782B2 (en) | 2016-10-28 | 2019-07-31 | Magnetic component and power module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016109699896 | 2016-10-28 | ||
| CN201610969989 | 2016-10-28 |
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| CN201710313185.5A Pending CN108022731A (en) | 2016-10-28 | 2017-05-05 | Coupling inductance and the VRM Voltage Regulator Module including coupling inductance |
| CN201710312684.2A Active CN108022917B (en) | 2016-10-28 | 2017-05-05 | Power module and magnetic assembly thereof |
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|---|---|---|---|---|
| CN111415804A (en) * | 2019-01-07 | 2020-07-14 | 台达电子企业管理（上海）有限公司 | Magnetic assembly and method of manufacturing the same |
| CN113628853A (en) * | 2020-05-09 | 2021-11-09 | 台达电子企业管理（上海）有限公司 | Multiphase coupling inductor and manufacturing method thereof |
| US20210350977A1 (en) * | 2020-05-09 | 2021-11-11 | Delta Electronics (Shanghai) Co., Ltd | Power module, power supply system and multi-phase inverse-coupled inductor |
| US11469674B2 (en) | 2019-09-11 | 2022-10-11 | Delta Electronics, Inc. | Resonant DC-DC converter |
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| EP3637446A1 (en) | 2018-10-09 | 2020-04-15 | Delta Electronics, Inc. | Voltage regulator module |
| US11158451B2 (en) | 2018-10-09 | 2021-10-26 | Delta Electronics, Inc. | Power module |
| CN111312704A (en) * | 2018-12-12 | 2020-06-19 | 台达电子工业股份有限公司 | Voltage regulation module |
| US11166373B2 (en) | 2018-10-09 | 2021-11-02 | Delta Electronics, Inc. | Voltage regulator module |
| CN111786541B (en) | 2019-03-18 | 2021-10-29 | 台达电子工业股份有限公司 | Voltage Regulation Module |
| CN111711358B (en) | 2019-03-18 | 2021-08-06 | 台达电子工业股份有限公司 | Voltage Regulation Module |
| CN112038052B (en) | 2019-06-04 | 2022-06-14 | 台达电子工业股份有限公司 | Voltage regulation module and applicable voltage regulation device |
| CN112731996B (en) | 2019-10-28 | 2022-07-15 | 台达电子工业股份有限公司 | Voltage regulation module |
| CN112071580B (en) * | 2020-08-14 | 2022-03-08 | 南京博兰得电子科技有限公司 | Coupling inductor |
| CN119813718A (en) | 2020-09-25 | 2025-04-11 | 台达电子工业股份有限公司 | Power conversion module |
| CN112397288A (en) * | 2020-12-02 | 2021-02-23 | 深圳市大能创智半导体有限公司 | Power supply module |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108022917A (en) | 2018-05-11 |
| CN108022917B (en) | 2019-11-29 |
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