WO2016181835A1 - 基板型ノイズフィルタおよび電子機器 - Google Patents
基板型ノイズフィルタおよび電子機器 Download PDFInfo
- Publication number
- WO2016181835A1 WO2016181835A1 PCT/JP2016/063174 JP2016063174W WO2016181835A1 WO 2016181835 A1 WO2016181835 A1 WO 2016181835A1 JP 2016063174 W JP2016063174 W JP 2016063174W WO 2016181835 A1 WO2016181835 A1 WO 2016181835A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- choke coil
- noise filter
- mode choke
- type noise
- frame ground
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 44
- 239000000758 substrate Substances 0.000 claims description 48
- 239000004020 conductor Substances 0.000 claims description 4
- 238000010292 electrical insulation Methods 0.000 claims description 3
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 230000003071 parasitic effect Effects 0.000 description 9
- 239000010949 copper Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H1/0007—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network of radio frequency interference filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
- H01F17/062—Toroidal core with turns of coil around it
-
- 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
- H01F27/2823—Wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/09—Filters comprising mutual inductance
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/42—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
- H03H7/425—Balance-balance networks
- H03H7/427—Common-mode filters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F2017/0093—Common mode choke coil
-
- 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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
- H01F2027/065—Mounting on printed circuit boards
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
- H03H2001/0035—Wound magnetic core
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
- H03H2001/005—Wound, ring or feed-through type inductor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10015—Non-printed capacitor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/1003—Non-printed inductor
Definitions
- the present invention relates to a board type noise filter in which a choke coil having a toroidal shape is mounted on a printed wiring board, and an electronic device including the board type noise filter.
- a noise filter for suppressing electromagnetic noise is mounted on a printed wiring board having an electric circuit with hard switching in an inverter or a switching power supply.
- a common mode choke coil that acts as an inductor for the common mode is mounted on a printed wiring board in the same manner as a filter circuit element such as a bypass capacitor.
- Patent Document 1 describes a board type noise fill in which a common mode choke coil is mounted on an insulating base having legs at four corners, and the insulating base is mounted on a wiring board. Has been. Filter circuit elements such as capacitors excluding common mode choke coils and external connection terminals are mounted directly on the wiring board.
- a normal mode choke coil that acts as an inductor for the normal mode is mounted on a printed wiring board in the same manner as a filter circuit element such as a bypass capacitor.
- a main object of the present invention is to provide a substrate type noise filter having higher noise removal performance than a conventional noise filter, and an electronic device including the substrate type noise filter.
- a board-type noise filter includes a printed wiring board on which a wiring pattern is formed, a core mounted on the printed wiring board, having a toroidal shape, and a coil wound around the core.
- the common mode choke coil and the toroidal shape of the common mode choke coil are viewed in plan, the common mode choke coil is fixed to the printed wiring board at a position overlapping the hollow portion of the common mode choke coil, and is grounded to the frame ground.
- FIG. 3 is a top view for explaining the substrate type noise filter according to the first exemplary embodiment.
- FIG. 3 is a partial side view for explaining an electronic device including the substrate type noise filter according to the first embodiment.
- FIG. 3 is a partial cross-sectional view for explaining an electronic device including the substrate type noise filter according to the first embodiment.
- 1 is a circuit diagram of an electronic device including a substrate type noise filter according to a first embodiment.
- 6 is a top view for explaining a substrate type noise filter according to Embodiment 2.
- FIG. It is a partial side view for demonstrating an electronic device provided with the board
- FIG. FIG. 6 is a circuit diagram of an electronic device including a substrate type noise filter according to a second embodiment.
- FIG. 6 is a top view for explaining a substrate type noise filter according to a third embodiment. It is a partial side view for demonstrating an electronic device provided with the board
- FIG. FIG. 6 is a circuit diagram of an electronic device including a substrate type noise filter according to a third embodiment.
- the board type noise filter 100 includes a printed wiring board 1, line bypass capacitors 2, 3, 8, 9, a common mode choke coil 4, and a frame ground unit 6.
- the line bypass capacitors 2, 3, 8, and 9, the common mode choke coil 4, and the frame ground portion 6 are mounted on the printed wiring board 1 and constitute a filter circuit.
- the printed wiring board 1 is provided with a through hole for inserting both terminals (first terminal and second terminal) of the line bypass capacitors 2, 3, 8, 9 and a fixing member 5 so as to be inserted.
- the first through hole is formed.
- the first through hole for inserting the fixing member 5 is formed on the printed wiring board 1 at a position overlapping with a hollow portion of a common mode choke coil 4 described later.
- the line bypass capacitors 2, 3, 8, and 9 each have a first terminal and a second terminal connected to two electrodes formed with a dielectric interposed therebetween.
- the line bypass capacitors 2, 3, 8, and 9 are disposed around the common mode choke coil 4 on the printed wiring board 1.
- the common mode choke coil 4 includes a core 4a having a toroidal shape, and two choke coils 4b and 4c wound around the core 4a in opposite directions.
- the material constituting the core 4a is, for example, ferrite.
- the common mode choke coil 4 is configured such that when a common mode current flows through the two choke coils 4b and 4c, the mutual magnetic flux generated in the core 4a is added to obtain a large inductance.
- the frame ground portion 6 is provided on the printed wiring board 1 at a position overlapping the hollow portion of the common mode choke coil 4.
- a conductive pattern (not shown) made of a conductive material (for example, copper (Cu)) is formed on the frame ground portion 6 at least on the surface.
- the frame ground portion 6 is formed with a second through hole in which the fixing member 5 can be inserted.
- the first through hole for inserting the fixing member 5 formed in the printed wiring board 1 and the second through hole for inserting the fixing member 5 formed in the frame ground portion 6 are the printed wiring board 1. Are formed so as to be continuous in the thickness direction.
- a wiring pattern 7 is formed on the printed wiring board 1.
- the wiring pattern 7 connects between the frame ground portion 6 and one terminal (first terminal) of the line bypass capacitors 2, 3, 8, and 9.
- the length of the wiring pattern 7 can be, for example, equal to or less than the diameter of the common mode choke coil 4 because the frame ground portion 6 is disposed in the hollow portion of the common mode choke coil 4 as described above.
- the width of the wiring pattern 7 is preferably larger from the viewpoint of reducing the wiring inductance.
- the material constituting the wiring pattern 7 may be any material having conductivity, for example, Cu.
- the wiring pattern 7 may be formed by any method.
- the electronic device 200 includes the substrate type noise filter 100 and the housing 11 as described above.
- the casing 11 only needs to have an arbitrary configuration as long as the substrate type noise filter 100 can be fixed.
- pillar 12 are comprised with the arbitrary materials which have electroconductivity.
- the support column 12 is formed with a third through hole in which the fixing member 5 can be inserted.
- the printed wiring board 1 and the housing 11 are fixed to each other when the fixing member 5 is inserted into the first through hole, the second through hole, and the third through hole and tightened.
- the fixing member 5 is made of any material having at least a surface having conductivity.
- the fixing member 5 only needs to have an arbitrary configuration as long as the printed wiring board 1 and the housing 11 can be fixed.
- the fixing member 5 is a screw.
- the fixing member 5 has a portion (for example, a head portion of a screw) protruding from the frame ground portion 6 toward the common mode choke coil 4 side.
- the fixing member 5 is provided such that the distance between the common mode choke coil 4 and the choke coils 4b and 4c is equal to or greater than the insulation distance defined by the standard when fixed to the printed wiring board 1.
- the frame ground portion 6 is electrically connected via the housing 11 and the fixing member 5 when the fixing member 5 is inserted into the first through hole, the second through hole, and the third through hole and tightened. And is thereby grounded to the frame ground.
- the fixing member 5 fixes the printed wiring board 1 and the housing 11 and electrically connects the frame ground portion 6 and the housing 11.
- the electronic device 200 is configured as a switching power supply, for example, and further includes an external power supply 13, a rectifying diode bridge 14, a switching power supply circuit 15, and a load 16.
- the substrate-type noise filter 100 constitutes a filter circuit that connects between the external power supply 13 and the rectifying diode bridge 14 in the electronic device 200.
- the printed circuit board 1 On the printed circuit board 1, two input terminals (a first input terminal and a second input terminal, not shown) of the filter circuit provided so as to be connectable to the external power supply 13 are formed.
- the first input terminal and the second input terminal are each connected to one end (start of winding) of two choke coils constituting the common mode choke coil 4.
- the first input terminal and the second input terminal are respectively connected to one terminal (second terminal) of the line bypass capacitors 2 and 3.
- a capacitor (across the line capacitor) 10 is connected between the first input terminal and the second input terminal.
- the other ends (winding ends) of the two choke coils constituting the common mode choke coil 4 are connected to the first output terminal and the second output terminal, respectively.
- the first output terminal and the second output terminal are respectively connected to one terminal (second terminal) of the line bypass capacitors 8 and 9.
- the other terminals (first terminals) of the line bypass capacitors 2, 3, 8, and 9 are connected to the frame ground portion 6 through the wiring patterns 7, respectively.
- the frame ground portion 6 is electrically connected to the housing 11 and grounded to the frame ground.
- the board-type noise filter 100 includes a printed wiring board 1 on which a wiring pattern 7 is formed, a core 4a having a toroidal shape and a coil 4b wound around the core 4a.
- a printed wiring board 1 on which a wiring pattern 7 is formed
- a core 4a having a toroidal shape and a coil 4b wound around the core 4a.
- the toroidal shape of the common mode choke coil 4 is viewed in plan, it is fixed to the printed circuit board 1 at a position overlapping the hollow portion of the common mode choke coil 4 and is connected to the frame ground.
- a frame ground portion 6 provided so as to be groundable, and mounted on the printed wiring board 1, and has a first terminal and a second terminal.
- the first terminal is the frame ground portion 6 and the wiring pattern 7.
- Line bypass capacitors 2, 3, 8, and 9 connected to each other.
- the distance between the line bypass capacitors 2, 3, 8, 9 and the frame ground portion 6 is set between the line bypass capacitor and the external connection terminal block grounded to the frame ground in the conventional board type noise filter. It can be shorter than the distance. Therefore, the length of the wiring pattern 7 that electrically connects the line bypass capacitors 2, 3, 8, 9 and the frame ground portion 6 is set to the line bypass capacitor and the external connection terminal block in the conventional board type noise filter. It can be made shorter than the length of the wiring pattern that connects the two. As a result, the substrate type noise filter 100 has a high noise removal performance because the deterioration of the noise reduction performance due to the wiring inductance is suppressed as compared with the conventional substrate type noise filter.
- a parasitic capacitance can be formed between the choke coils 4b and 4c of the common mode choke coil 4 and the fixing member 5 (or the frame ground portion 6). Since the parasitic capacitance can act as a line bypass capacitor, the substrate type noise filter 100 has high noise removal performance.
- the wiring pattern 7 connects between the first terminals of the line bypass capacitors 2, 3, 8, and 9 and the frame ground portion 6. Since the part 6 and the housing 11 are connected, the wiring pattern 7 can be easily routed and the degree of freedom in pattern design of the printed wiring board 1 can be improved as compared with a conventional board type noise filter having a terminal block. Can do.
- the common mode choke coil 4 and the frame ground portion 6 are arranged with a distance of at least the shortest distance that can ensure electrical insulation. If the common mode choke coil 4 and the frame ground portion 6 are arranged at a shortest distance that can ensure electrical insulation, the common mode choke coil 4 and the fixing member 5 (or the frame ground portion 6) are arranged. A large parasitic capacitance can be formed between them. The parasitic capacitance can act as a line bypass capacitor. In this case, a multistage LC filter circuit is formed in the substrate type noise filter 100 by the inductance of the common mode choke coil 4 and the parasitic capacitance, and the substrate type noise filter 100 has high noise reduction performance. .
- the wiring pattern 7 connecting the frame ground portion 6 and the first terminals of the line bypass capacitors 2, 3, 8, and 9 is preferably formed in a straight line. . In this way, the length of the wiring pattern 7 can be made sufficiently shorter than that of a conventional substrate type noise filter. Therefore, such a substrate type noise filter 100 has a high noise removal performance.
- the electronic device 200 includes the substrate-type noise filter 100.
- a first through hole is formed in the printed wiring board 1, and a second through hole is formed in the frame ground portion 6.
- the electronic device 200 includes a housing 11 in which a third through hole is formed and made of a conductive material.
- the fixing member 5 is fastened to the first through hole, the second through hole, and the third through hole in a state where the first through hole, the second through hole, and the third through hole are overlapped with each other.
- the wiring board 1 and the housing 11 are fixed, and the frame ground portion 6 is grounded to the frame ground.
- switching elements for example, an insulated gate bipolar transistor (IGBT), a field effect transistor (FET), etc. constituting the switching power supply circuit 15
- IGBT insulated gate bipolar transistor
- FET field effect transistor
- the high-frequency noise generated in this way spreads in or out of the electronic device 200 by radiation or conduction. Therefore, the electronic device 200 has a standard regarding the noise level.
- the electronic device 200 includes a substrate type noise filter 100, and the common mode choke coil 4 and the line bypass capacitors 2, 3, 8, and 9 of the substrate type noise filter 100 contribute to the reduction of the common mode noise level.
- the across-the-line capacitor 10 of the type noise filter 100 can contribute to the reduction of the noise level in the normal mode.
- the printed wiring board 1 and the housing 11 are fixed by the fixing member 5 at the central portion of the common mode choke coil 4 having a heavy mass, the printed wiring board 1 may bend even under a severe vibration environment. Can be suppressed.
- the frame ground portion 6 can be used even when the common mode choke coil 4 generates heat due to conduction loss. Further, heat can be radiated to the housing 11 through the fixing member 5.
- the resistance value increases as the temperature rises. Therefore, since the rise in the resistance value of the choke coils 4b and 4c is also suppressed by suppressing the temperature increase of the common mode choke coil 4, the deterioration of the noise removal performance by the common mode choke coil 4 due to the conduction loss is suppressed. can do.
- the diameter (screw diameter) of the fixing member 5 may be an arbitrary size, but the diameter (screw diameter) of the fixing member 5 is preferably larger from the viewpoint of heat dissipation.
- the board type noise filter 110 according to the second embodiment basically has the same configuration as the board type noise filter 100 according to the first embodiment, but is mounted on the printed circuit board 1 on the common mode choke coil 4 side. In place of the line bypass capacitors 2, 3, 8, and 9, the line bypass capacitor mounted on the surface of the printed wiring board 1 that is opposite to the surface on which the common mode choke coil 4 is mounted. 17, 18, 19, and 20 are different.
- the line bypass capacitors 17, 18, 19, and 20 are mounted at positions at least partially overlapping the common mode choke coil 4 when the toroidal shape of the common mode choke coil 4 is viewed in plan view.
- the length of the wiring pattern 7 connecting the line bypass capacitor and the frame ground portion 6 is equal to or less than the radius of the outer circumference circle of the common mode choke coil 4.
- the line bypass capacitors 17, 18, 19, and 20 are provided so as to be surface-mounted.
- the line bypass capacitors 17, 18, 19, and 20 are mounted at a position where at least a part thereof overlaps the hollow portion of the common mode choke coil 4 when the toroidal shape of the common mode choke coil 4 is viewed in plan view.
- the length of the wiring pattern 7 is equal to or less than the radius of the inner circumferential circle of the common mode choke coil 4.
- the board-type noise filter 110 according to the second embodiment can shorten the length of the wiring pattern 7 as compared with the conventional board-type noise filter. Therefore, the substrate type noise filter 110 according to the second embodiment can achieve the same effect as the substrate type noise filter 100 according to the first embodiment.
- the line bypass capacitors 17, 18, 19, and 20 are located on the side opposite to the surface on which the common mode choke coil 4 is mounted on the printed wiring board 1. On the surface, at least a part of the common mode choke coil 4 is mounted. Therefore, the board-type noise filter 110 according to the second embodiment can make the length of the wiring pattern 7 shorter than the board-type noise filter 100 according to the first embodiment. As a result, the deterioration of the noise removal performance due to the wiring inductance is suppressed, and the noise removal performance is high.
- the electronic device 210 according to the second embodiment includes the board-type noise filter 110 and the casing 11 according to the second embodiment, and the printed circuit board 1 and the casing 11 are heavy in common mode choke coil 4. It is being fixed by the fixing member 5 in the center part. Therefore, the electronic device 210 according to the second embodiment can achieve the same effects as the electronic device 200 according to the first embodiment.
- the substrate-type noise filter 120 according to the third embodiment basically has the same configuration as the substrate-type noise filter 120 according to the first embodiment, but is not configured as a filter for common mode noise. However, it is configured as a filter for normal mode noise, and is different in that no capacitor is connected between the lines.
- the substrate type noise filter 120 includes a normal mode choke coil 21 instead of the common mode choke coil 4.
- the normal mode choke coil 21 is connected to the first input terminal.
- the normal mode choke coil 21 includes a core 21a having a toroidal shape and a single choke coil 21b wound around the core 21a in opposite directions.
- the material constituting the core 21a is, for example, ferrite.
- the normal mode choke coil 21 is configured so that a large inductance is obtained when a normal mode current flows through one choke coil 21b.
- the printed wiring board 1 is provided with a first through hole in which at least the fixing member 5 can be inserted.
- the first through hole for inserting the fixing member 5 is formed on the printed wiring board 1 at a position overlapping the hollow portion of the normal mode choke coil 21.
- the fixing member 5 and the frame ground part 6 may have the same configuration as the fixing member 5 and the frame ground part 6 in the substrate type noise filter 100 according to the first embodiment.
- the frame ground portion 6 is formed with a second through hole in which the fixing member 5 can be inserted.
- the fixing member 5 is provided so that the distance between the normal mode choke coil 21 and the choke coil 21b is equal to or greater than the insulation distance defined by the standard when fixed to the printed wiring board 1.
- the frame ground unit 6 is connected to the second input terminal.
- the fixing member 5 and the frame ground portion 6 are grounded to the frame ground, and between the choke coil 21b of the normal mode choke coil 21 and the fixing member 5 (or the frame ground portion 6), there is no gap between them.
- Parasitic capacitance (dielectric constant ⁇ area / interconductor distance) that is inversely proportional to the distance (interconductor distance) is formed.
- the parasitic capacitance can act as a line bypass capacitor in a filter circuit for normal mode noise. That is, the substrate type noise filter 120 includes a multistage LC filter circuit by the parasitic capacitance and the winding inductance of the normal mode choke coil 21. As a result, the substrate type noise filter 120 has noise removal performance without using a line bypass capacitor. Further, for example, by appropriately selecting the outer diameter of the fixing member 5 and setting the distance between the conductors to the minimum distance satisfying the insulation distance defined by the standard, the substrate type noise filter 120 has a higher noise removal than the conventional noise filter. Can have performance.
- fixing member 5 and frame ground portion 6 are connected via a buffer member (such as a washer) having an outer diameter larger than that of fixing member 5. It may be.
- the material which comprises the said buffer member should just be arbitrary materials which have electroconductivity.
- the buffer member is, for example, a washer.
- the frame ground portion 6 may be formed integrally with the printed wiring board 1 or may be formed separately from the printed wiring board 1 and fixed to the printed wiring board 1 by the fixing member 5. Good.
- a thermal via (not shown) having the same potential as that of the frame ground portion 6 and the wiring pattern 7 is provided on the printed wiring board 1. It may be formed at a position overlapping the four hollow portions. In this case, the thermal via is connected to the first through hole for inserting the fixing member 5. In this way, even when the common mode choke coil 4 generates heat due to conduction loss, the heat can be radiated to the housing 11 via the thermal via and the fixing member 5.
- the rectifying diode bridge 14, the switching power supply circuit 15, and the load 16 may be formed on the printed wiring board 1. Further, the rectifying diode bridge 14, the switching power supply circuit 15, and the connector or terminal block are formed on the printed wiring board 1, and the load 16 not formed on the printed wiring board 1 is connected to the connector or terminal block. Via the switching power supply circuit 15 or the like.
- the fixing member 5 is configured as a screw, but is not limited thereto.
- the fixing member 5 has an arbitrary configuration as long as it can be inserted into the first through hole, the second through hole, and the third through hole, and the frame ground portion 6 can be grounded to the frame ground of the electronic device 200.
- it may be configured as a male spacer made of a metal material.
- the present invention is particularly advantageously applied to a noise filter including a common mode choke coil or a normal mode choke coil.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Filters And Equalizers (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
図1~図4を参照して、実施の形態1に係る基板型ノイズフィルタ100および電子機器200について説明する。基板型ノイズフィルタ100は、プリント配線基板1と、ラインバイパスコンデンサ2,3,8,9、コモンモードチョークコイル4と、およびフレームグラウンド部6とを備える。ラインバイパスコンデンサ2,3,8,9、コモンモードチョークコイル4と、およびフレームグラウンド部6は、プリント配線基板1に実装されており、フィルタ回路を構成している。
次に、図5~図7を参照して、実施の形態2に係る基板型ノイズフィルタ110について説明する。実施の形態2に係る基板型ノイズフィルタ110は、基本的には実施の形態1に係る基板型ノイズフィルタ100と同様の構成を備えるが、プリント配線基板1上においてコモンモードチョークコイル4側に実装されているラインバイパスコンデンサ2,3,8,9に代えて、プリント配線基板1においてコモンモードチョークコイル4が実装されている面とは反対側に位置する面上に実装されているラインバイパスコンデンサ17,18,19,20が実装されている点で異なる。
次に、図8~図10を参照して、実施の形態3に係る基板型ノイズフィルタ120について説明する。実施の形態3に係る基板型ノイズフィルタ120は、基本的には実施の形態1に係る基板型ノイズフィルタ120と同様の構成を備えているが、コモンモードノイズに対するフィルタとして構成されているのではなくノーマルモードノイズに対するフィルタとして構成されており、かつ、ライン間にコンデンサが接続されていない点で異なる。
Claims (6)
- 配線パターンが形成されているプリント配線基板と、
前記プリント配線基板に実装されており、トロイダル形状を有するコアと前記コアの周囲に巻き回されているコイルとを含むコモンモードチョークコイルと、
前記コモンモードチョークコイルの前記トロイダル形状を平面視したときに、前記コモンモードチョークコイルの中空部分と重なる位置において前記プリント配線基板に固定されており、フレームグラウンドに接地可能に設けられているフレームグラウンド部と、
前記プリント配線基板に実装されており、第1の端子と第2の端子とを有し、前記第1の端子が前記フレームグラウンド部と前記配線パターンを介して接続されているバイパスコンデンサとを備える、基板型ノイズフィルタ。 - 前記コモンモードチョークコイルと前記フレームグラウンド部とは、電気的絶縁を確保することができる最短距離以上を隔てて配置されている、請求項1に記載の基板型ノイズフィルタ。
- 前記フレームグラウンド部と前記バイパスコンデンサの前記第1の端子との間を接続している前記配線パターンは、直線状に形成されている、請求項1または請求項2に記載の基板型ノイズフィルタ。
- 前記バイパスコンデンサは、前記プリント配線基板において前記コモンモードチョークコイルが実装されている面とは反対側に位置する面上に、少なくとも一部が前記コモンモードチョークコイルと重なる位置に実装されている、請求項1~請求項3のいずれか1項に記載の基板型ノイズフィルタ。
- 請求項1~請求項4のいずれか1項に記載の基板型ノイズフィルタを備え、
前記基板型ノイズフィルタにおいて、前記プリント配線基板には第1貫通孔が形成されており、前記フレームグラウンド部には第2貫通孔が形成されており、
第3貫通孔が形成されており、導電性材料で構成されている筐体を備え、
前記第1貫通孔、前記第2貫通孔および前記第3貫通孔が重なるように配置された状態で前記第1貫通孔、前記第2貫通孔、および前記第3貫通孔に固定部材が緊締されることにより、前記プリント配線基板と前記筐体とは固定されており、かつ、前記フレームグラウンド部はフレームグラウンドに接地されている、電子機器。 - 第1入力端子と第2入力端子とを有する基板型ノイズフィルタであって、
配線パターンが形成されているプリント配線基板と、
前記プリント配線基板に実装されており、かつ前記第1入力端子と接続されており、トロイダル形状を有するコアと前記コアの周囲に巻き回されているコイルとを含むノーマルモードチョークコイルと、
前記ノーマルモードチョークコイルの前記トロイダル形状を平面視したときに、前記ノーマルモードチョークコイルの中空部分と重なる位置において前記プリント配線基板に固定されており、かつ前記第2入力端子と接続されている電極部とを備え、
前記ノーマルモードチョークコイルと前記電極部とは間隔を隔てて配置されている、基板型ノイズフィルタ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017517877A JP6452810B2 (ja) | 2015-05-14 | 2016-04-27 | 基板型ノイズフィルタおよび電子機器 |
DE112016002174.7T DE112016002174T5 (de) | 2015-05-14 | 2016-04-27 | Störungsfilter vom leiterplattentyp und elektronische einrichtung |
US15/562,574 US10491180B2 (en) | 2015-05-14 | 2016-04-27 | Board-type noise filter and electronic device |
CN201680021180.9A CN107431470B (zh) | 2015-05-14 | 2016-04-27 | 基板型噪声滤波器以及电子设备 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015099193 | 2015-05-14 | ||
JP2015-099193 | 2015-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016181835A1 true WO2016181835A1 (ja) | 2016-11-17 |
Family
ID=57248851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/063174 WO2016181835A1 (ja) | 2015-05-14 | 2016-04-27 | 基板型ノイズフィルタおよび電子機器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10491180B2 (ja) |
JP (1) | JP6452810B2 (ja) |
CN (1) | CN107431470B (ja) |
DE (1) | DE112016002174T5 (ja) |
WO (1) | WO2016181835A1 (ja) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6447789B1 (ja) * | 2018-05-18 | 2019-01-09 | 三菱電機株式会社 | ノイズフィルタ |
KR20190029420A (ko) * | 2017-09-11 | 2019-03-20 | 한온시스템 주식회사 | 노이즈 신호를 억제하기 위한 emc-필터 |
JP2019067896A (ja) * | 2017-09-29 | 2019-04-25 | 日本電産エレシス株式会社 | 回路基板、および制御装置 |
KR20190044845A (ko) * | 2017-10-23 | 2019-05-02 | 엘지전자 주식회사 | 공기 조화기 |
JP6765553B1 (ja) * | 2019-05-22 | 2020-10-07 | 三菱電機株式会社 | ノイズフィルタ |
JP2021508191A (ja) * | 2017-12-21 | 2021-02-25 | エスエムエイ ソーラー テクノロジー アクティエンゲゼルシャフトSMA Solar Technology AG | Lcフィルタ配置、及びこのようなlcフィルタ配置を有する電気又は電子デバイス |
US20210074463A1 (en) * | 2018-05-31 | 2021-03-11 | Power Integrations, Inc. | Housing for ferrite beads and other pass-through electrical filter components |
WO2021167271A1 (en) * | 2020-02-17 | 2021-08-26 | Hanon Systems | Emc filter plug-in arrangement |
US11742728B2 (en) * | 2017-12-26 | 2023-08-29 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electric pump |
US12027295B2 (en) * | 2020-11-18 | 2024-07-02 | Power Integrations, Inc. | Housing for ferrite beads and other pass-through electrical filter components |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6901948B2 (ja) * | 2017-09-29 | 2021-07-14 | 株式会社マキタ | 電動作業機 |
JP7049201B2 (ja) * | 2018-07-09 | 2022-04-06 | 株式会社トーキン | ノイズフィルター及びノイズフィルターの製造方法 |
EP3696972A1 (en) * | 2019-02-12 | 2020-08-19 | Mahle International GmbH | Filter module for reducing differential and common mode noise and method to manufacture such a filter module |
CN109819588A (zh) * | 2019-02-27 | 2019-05-28 | 珠海格力电器股份有限公司 | 电源滤波器和空调 |
DE102019115516A1 (de) * | 2019-06-07 | 2020-12-10 | Webasto SE | Verfahren zur Verringerung von Gleichtakt-Störungen von durch Hochvoltkomponenten gesteuerten ohmschen Lasten mit kapazitivem Belag |
CN110277907A (zh) * | 2019-06-17 | 2019-09-24 | 珠海格力电器股份有限公司 | 一种滤波装置、电源及其滤波方法 |
CN110993254B (zh) * | 2019-12-24 | 2021-06-29 | 江苏晨朗电子集团有限公司 | 多种频率段磁性材料集成差共模滤波器 |
US20230290557A1 (en) * | 2020-07-15 | 2023-09-14 | Mitsubishi Electric Corporation | Common mode choke coil and noise filter circuit equipped with said common mode choke coil |
DE202021104096U1 (de) * | 2020-11-20 | 2021-08-09 | Yun-Kuang Fan | Induktive Hybridvorrichtung |
DE102021131439A1 (de) | 2021-11-30 | 2023-06-01 | TDK Europe GmbH | Drosselmodul |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5872825U (ja) * | 1981-11-10 | 1983-05-17 | 株式会社東芝 | リアクトル |
JPH04154204A (ja) * | 1990-10-17 | 1992-05-27 | Fujitsu Ltd | モジュール式交流ライン用ノイズフィルタ |
JP2002252535A (ja) * | 2001-02-23 | 2002-09-06 | Densei Lambda Kk | 三相ノイズフィルタ |
JP2010165795A (ja) * | 2009-01-14 | 2010-07-29 | Daikin Ind Ltd | チョークコイル台座および空気調和機のコントローラ |
JP2011205211A (ja) * | 2010-03-24 | 2011-10-13 | Okaya Electric Industries Co Ltd | ノイズフィルタ |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5872825A (ja) | 1981-10-23 | 1983-04-30 | Hitachi Ltd | 開放形吸収式空気調和機 |
JPS62161208A (ja) | 1985-09-02 | 1987-07-17 | Nippon Ferrite Ltd | ノイズフイルタ |
JP2552820Y2 (ja) | 1991-07-10 | 1997-10-29 | 株式会社トーキン | 基板型ノイズフィルタ |
JPH0736468U (ja) | 1993-12-06 | 1995-07-04 | 株式会社東海理化電機製作所 | 電子部品の放熱構造 |
JPH11330886A (ja) * | 1998-05-08 | 1999-11-30 | Tdk Corp | 箱形ノイズフィルタ |
US6771157B2 (en) * | 2001-10-19 | 2004-08-03 | Murata Manufacturing Co., Ltd | Wire-wound coil |
TW568471U (en) * | 2003-05-20 | 2003-12-21 | Delta Electronics Inc | Electromagnetic interference filter |
JP2011166023A (ja) * | 2010-02-12 | 2011-08-25 | Fuji Electric Co Ltd | インダクタ |
JP2013068514A (ja) | 2011-09-22 | 2013-04-18 | Mitsubishi Electric Corp | 電子機器 |
JP5183830B1 (ja) * | 2012-04-18 | 2013-04-17 | 三菱電機株式会社 | ノイズフィルタ装置 |
JP2014217244A (ja) | 2013-04-30 | 2014-11-17 | 三菱電機株式会社 | 絶縁型スイッチング電源装置および絶縁型スイッチング電源装置の製造方法 |
-
2016
- 2016-04-27 DE DE112016002174.7T patent/DE112016002174T5/de not_active Withdrawn
- 2016-04-27 US US15/562,574 patent/US10491180B2/en active Active
- 2016-04-27 WO PCT/JP2016/063174 patent/WO2016181835A1/ja active Application Filing
- 2016-04-27 JP JP2017517877A patent/JP6452810B2/ja active Active
- 2016-04-27 CN CN201680021180.9A patent/CN107431470B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5872825U (ja) * | 1981-11-10 | 1983-05-17 | 株式会社東芝 | リアクトル |
JPH04154204A (ja) * | 1990-10-17 | 1992-05-27 | Fujitsu Ltd | モジュール式交流ライン用ノイズフィルタ |
JP2002252535A (ja) * | 2001-02-23 | 2002-09-06 | Densei Lambda Kk | 三相ノイズフィルタ |
JP2010165795A (ja) * | 2009-01-14 | 2010-07-29 | Daikin Ind Ltd | チョークコイル台座および空気調和機のコントローラ |
JP2011205211A (ja) * | 2010-03-24 | 2011-10-13 | Okaya Electric Industries Co Ltd | ノイズフィルタ |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190029420A (ko) * | 2017-09-11 | 2019-03-20 | 한온시스템 주식회사 | 노이즈 신호를 억제하기 위한 emc-필터 |
KR102036203B1 (ko) * | 2017-09-11 | 2019-10-24 | 한온시스템 주식회사 | 노이즈 신호를 억제하기 위한 emc-필터 |
US10644588B2 (en) | 2017-09-11 | 2020-05-05 | Hanon Systems | EMC-filter for suppressing noise signals |
JP2019067896A (ja) * | 2017-09-29 | 2019-04-25 | 日本電産エレシス株式会社 | 回路基板、および制御装置 |
KR20190044845A (ko) * | 2017-10-23 | 2019-05-02 | 엘지전자 주식회사 | 공기 조화기 |
KR102015441B1 (ko) | 2017-10-23 | 2019-08-28 | 엘지전자 주식회사 | 공기 조화기 |
JP2021508191A (ja) * | 2017-12-21 | 2021-02-25 | エスエムエイ ソーラー テクノロジー アクティエンゲゼルシャフトSMA Solar Technology AG | Lcフィルタ配置、及びこのようなlcフィルタ配置を有する電気又は電子デバイス |
JP7425727B2 (ja) | 2017-12-21 | 2024-01-31 | エスエムエイ ソーラー テクノロジー アクティエンゲゼルシャフト | Lcフィルタ配置、及びこのようなlcフィルタ配置を有する電気又は電子デバイス |
US11742728B2 (en) * | 2017-12-26 | 2023-08-29 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electric pump |
US11211912B2 (en) | 2018-05-18 | 2021-12-28 | Mitsubishi Electric Corporation | Noise filter |
JP6447789B1 (ja) * | 2018-05-18 | 2019-01-09 | 三菱電機株式会社 | ノイズフィルタ |
US20210074463A1 (en) * | 2018-05-31 | 2021-03-11 | Power Integrations, Inc. | Housing for ferrite beads and other pass-through electrical filter components |
WO2020235046A1 (ja) * | 2019-05-22 | 2020-11-26 | 三菱電機株式会社 | ノイズフィルタ |
JP6765553B1 (ja) * | 2019-05-22 | 2020-10-07 | 三菱電機株式会社 | ノイズフィルタ |
WO2021167271A1 (en) * | 2020-02-17 | 2021-08-26 | Hanon Systems | Emc filter plug-in arrangement |
US12027295B2 (en) * | 2020-11-18 | 2024-07-02 | Power Integrations, Inc. | Housing for ferrite beads and other pass-through electrical filter components |
Also Published As
Publication number | Publication date |
---|---|
JPWO2016181835A1 (ja) | 2018-01-25 |
CN107431470A (zh) | 2017-12-01 |
CN107431470B (zh) | 2020-12-01 |
US20180115293A1 (en) | 2018-04-26 |
DE112016002174T5 (de) | 2018-01-25 |
US10491180B2 (en) | 2019-11-26 |
JP6452810B2 (ja) | 2019-01-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6452810B2 (ja) | 基板型ノイズフィルタおよび電子機器 | |
WO2013157098A1 (ja) | ノイズフィルタ装置 | |
US9013259B2 (en) | Powder core material coupled inductors and associated methods | |
JP2016006816A (ja) | トランスおよび多層基板 | |
JP3753928B2 (ja) | プリント回路基板及びそれを用いた電源 | |
JP6261071B2 (ja) | コイル一体型プリント基板、磁気デバイス | |
WO2016143149A1 (ja) | ノイズフィルタ | |
JP6326803B2 (ja) | コイル基板、巻線部品及び電源装置 | |
JP2017130296A (ja) | 端子台 | |
US10855172B2 (en) | Shield, electronic circuit, and DC-DC converter | |
KR102444844B1 (ko) | 자기 결합 장치 및 이를 포함하는 평판 디스플레이 장치 | |
WO2010016367A1 (ja) | 複合電子部品 | |
JP4793758B2 (ja) | インダクタンス素子 | |
US9490057B2 (en) | Integrated magnetic module | |
JP2018057211A (ja) | 出力ノイズ低減装置 | |
JP2014217244A (ja) | 絶縁型スイッチング電源装置および絶縁型スイッチング電源装置の製造方法 | |
JP6485553B2 (ja) | インダクタ及びdc−dcコンバータ | |
JP6508694B2 (ja) | チョークコイル | |
WO2023013343A1 (ja) | スイッチング電源装置 | |
WO2016143207A1 (ja) | ノイズフィルタ | |
JP2009033923A (ja) | サージ吸収用の端子台及びこの端子台を備えたモータ | |
JP6218876B2 (ja) | モジュール部品およびその製造方法 | |
JP5951163B1 (ja) | ノイズフィルタ | |
JP2021129367A (ja) | スイッチング電源装置 | |
TWM532643U (zh) | 耦合線圈裝置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16792560 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2017517877 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15562574 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112016002174 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16792560 Country of ref document: EP Kind code of ref document: A1 |