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WO2020071196A1 - Ac adapter - Google Patents

Ac adapter

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Publication number
WO2020071196A1
WO2020071196A1 PCT/JP2019/037503 JP2019037503W WO2020071196A1 WO 2020071196 A1 WO2020071196 A1 WO 2020071196A1 JP 2019037503 W JP2019037503 W JP 2019037503W WO 2020071196 A1 WO2020071196 A1 WO 2020071196A1
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WO
WIPO (PCT)
Prior art keywords
circuit
adapter
housing
filter circuit
converter
Prior art date
Application number
PCT/JP2019/037503
Other languages
French (fr)
Japanese (ja)
Inventor
欣三 田村
Original Assignee
株式会社村田製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Publication of WO2020071196A1 publication Critical patent/WO2020071196A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters

Definitions

  • the present invention relates to an AC adapter.
  • the present invention has been made in view of the above circumstances, and has as its object to provide an AC adapter in which the oscillation waveform of a switching circuit is stable.
  • an AC adapter comprises: A filter circuit for removing noise components; An AC-DC converter circuit for converting AC power output from the filter circuit into DC power, A control circuit for controlling the operation of the AC-DC converter circuit; A first housing for housing the filter circuit; A second housing that is arranged at a distance from the first housing and houses the AC-DC converter circuit and the control circuit.
  • the AC-DC converter circuit includes: A rectifying and smoothing circuit for rectifying and smoothing the AC power input from the filter circuit, Having a plurality of capacitors and a plurality of switching elements, and a capacitive power conversion circuit having: The control circuit controls an on / off state of each of the plurality of switching elements to charge and discharge each of the plurality of capacitors, so that DC power output from the rectifying and smoothing circuit is stepped up and down and output. It may be.
  • the AC adapter according to the present invention A plug that is detachable from an outlet that is electrically connected to a system power supply, and further includes a plug that supplies AC power supplied from the system power to the filter circuit while being attached to the outlet. Good.
  • the AC adapter according to the present invention A lead for electrically connecting the filter circuit and the AC-DC converter circuit; A conductive member that covers at least a portion of the conductive wire, May be further provided.
  • the second housing that houses the AC-DC converter circuit and the control circuit is arranged at a distance from the first housing that houses the filter circuit.
  • the distance between the filter circuit, the AC-DC converter circuit, and the control circuit is inevitably greater than that of an AC adapter in which the filter circuit is housed in the same housing together with the AC-DC converter circuit and the control circuit.
  • FIG. 2 is a diagram illustrating a configuration of an AC adapter according to the embodiment of the present invention.
  • FIG. 3 is a circuit block diagram of the AC adapter according to the embodiment.
  • FIG. 9 is a diagram illustrating a configuration of an AC adapter according to a modification.
  • FIG. 9 is a circuit block diagram of an AC adapter according to a modification.
  • FIG. 9 is a diagram illustrating a configuration of an AC adapter according to a modification.
  • the AC adapter converts AC power supplied via a plug from an outlet electrically connected to a system power supply to DC power, and outputs the DC power to a device operated by the DC power supply.
  • the AC adapter includes a filter circuit for removing a noise component included in an AC supplied from a system power supply, an AC-DC converter circuit for converting the AC in which the noise component has been removed by the filter circuit to a DC, and an AC-DC converter.
  • a control circuit for controlling the operation of the circuit.
  • the AC adapter includes a first housing that houses the filter circuit, and a second housing that is arranged at a distance from the first housing and houses the AC-DC converter circuit and the control circuit.
  • the filter circuit, the AC-DC converter circuit, and the control circuit are maintained at a distance from each other.
  • the AC adapter 1 includes an adapter body 11, a plug unit 12, and a connector 13.
  • the AC adapter 1 has a cable 14 serving as a conductor for electrically connecting the adapter body 11 and the plug unit 12, and a cable 15 serving as a conductor for electrically connecting the adapter body 11 and the connector 13. And. Devices driven by a DC power supply are connected to the connector 13.
  • the plug unit 12 includes a plug 122 detachable from an outlet R1 electrically connected to the system power supply AC, and a filter circuit for removing a noise component included in the alternating current supplied from the system power supply AC. 121.
  • the filter circuit 121 removes a noise component included in the alternating current, thereby suppressing a noise component generated in the adapter main body 11 from propagating to the system power supply AC side.
  • the plug unit 12 has a first housing 120 that houses the filter circuit 121 and the plug 122.
  • the first housing 120 is formed of, for example, a resin having electrical insulation properties.
  • the filter circuit 121 includes, for example, an inductor element, a capacitor, and the like mounted on a wiring board (not shown) which is an insulator substrate on which a conductive pattern is formed.
  • the adapter main body 11 includes an AC-DC converter circuit 111 including a transformer 112 for converting AC from which noise components have been removed by the filter circuit 121 into DC and an output circuit 113, and an AC-DC converter.
  • a control circuit 114 for controlling the operation of the circuit 111.
  • the AC-DC converter circuit 111 has a rectifying / smoothing circuit 111a and a power conversion circuit 111b.
  • the rectifying and smoothing circuit 111a includes a rectifying circuit (not shown) electrically connected to the filter circuit 121 of the plug unit 12 via the cable 14, and a smoothing capacitor (not shown) connected between output terminals of the rectifying circuit. ).
  • a diode bridge is used as the rectifier circuit.
  • the power conversion circuit 111b has a plurality of capacitors and a plurality of switching elements.
  • the capacitive power conversion circuit 111b for example, a charge pump circuit having a plurality of capacitors and a plurality of switching elements described in International Publication WO2017 / 195592 previously disclosed by the applicant of the present application is used. Can be adopted.
  • the rectifying / smoothing circuit 111a and the power conversion circuit 111b include, for example, a diode, a capacitor, and the like mounted on a wiring board (not shown) that is an insulator substrate on which a conductive pattern is formed.
  • the length of the cable 14 is such that the capacitance of the capacitor component between the filter circuit 121 and the AC-DC converter circuit 111 and the control circuit 114 is larger than the capacitance of the capacitor component included in the filter circuit 121 and the AC-DC converter circuit 111. It is set to be sufficiently small.
  • the output circuit 113 has, for example, a diode and a capacitor, and smoothes the DC output from the secondary output terminal of the transformer 112 and outputs the smoothed DC to the connector 13.
  • the output circuit 113 may include a current limiting element (not shown) for limiting the current flowing to the secondary side of the transformer 112.
  • the control circuit 114 switches the on / off state of each of the plurality of switching elements included in the power conversion circuit 111b to charge and discharge each of the plurality of capacitors, thereby raising and lowering the DC voltage input from the rectifying and smoothing circuit 111a.
  • the control circuit 114 includes a state in which a plurality of capacitors are connected in series between output terminals of the rectification / smoothing circuit 111a and a state in which the plurality of capacitors are connected in parallel with each other.
  • the on / off state of the plurality of switching elements is switched so that the switching state is realized alternately.
  • the control circuit 114 is, for example, one IC package, and is mounted on the above-described wiring board.
  • second housing 110 housing AC-DC converter circuit 111 and control circuit 114 is replaced with first housing 120 housing filter circuit 121. It is located at a distance from.
  • the filter circuit 121 and the AC-DC converter circuit 111 and the control circuit 114 are inevitably compared with the AC adapter housed in the same housing together with the AC-DC converter circuit 111 and the control circuit 114. And the distance between them can be lengthened. Therefore, the capacitor component between the filter circuit 121 and the AC-DC converter circuit 111 and the control circuit 114 can be reduced, and the malfunction of the AC-DC converter circuit 111 and the control circuit 114 caused by the filter circuit 121 occurs. It becomes difficult. Therefore, the switching waveform of the AC-DC converter circuit 111 is stabilized, and as a result, the output of the AC adapter 1 is stabilized.
  • filter circuit 121 is housed in first housing 120 together with plug 122.
  • the distance between the filter circuit 121 and the plug 122 can be inevitably shortened as compared with an AC adapter in which the filter circuit 121 is housed in the second housing 110. Therefore, propagation of noise components to the system power supply AC can be suppressed.
  • the AC-DC converter circuit 111 includes a power conversion circuit 111b including a plurality of capacitors and a plurality of switching elements.
  • the size of the AC-DC converter circuit 111 can be reduced.
  • the AC-DC converter circuit 2111 in the adapter main body 2011 may have a power transmission circuit 2112 including capacitors C11 and C12.
  • the same components as those in the embodiment are denoted by the same reference numerals as those in FIGS.
  • the power transmission circuit 2112 includes a series circuit of a capacitor C11 and an inductor L11 inserted in one of two transmission paths between the power conversion circuit 111b and the output circuit 113, and an interposed circuit in the other. And a series circuit of the inserted capacitor C12 and inductor L12.
  • the size of the adapter main body 2011 can be reduced as compared with the adapter main body 11 having the transformer 112 according to the embodiment.
  • the example has been described in which the power conversion circuit 111b is a charge pump circuit.
  • the present invention is not limited to this, and another power conversion circuit may be used.
  • the AC-DC converter circuit 111 may include, for example, an inductive power conversion circuit.
  • the cable 14 electrically connects the AC-DC converter circuit 2111 of the adapter body 2011 and the filter circuit 121 of the plug unit 12.
  • the conductive member 3016 may be a sheet-like member formed in a mesh shape from a metal wire, for example. Note that the conductive member 3016 may cover a part of the cable 14. Further, according to the present embodiment, noise coming from the outside can be suppressed, and noise applied to the filter circuit 121 of the plug unit 12 can be reduced.
  • the present invention is suitable as an AC adapter that supplies AC power from a system power supply and supplies DC power to an electric device driven by the DC power supply.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Rectifiers (AREA)

Abstract

An AC adapter (1) is provided with: a filter circuit (121) for removing a noise component included in an alternating current that is input from a system power supply via a plug (122); an AC-to-DC converter circuit (111) for converting the alternating current output from the filter circuit (121) into a direct current; a control circuit (114) for controlling an operation of the AC-to-DC converter circuit (111); a first housing (120) that accommodates the filter circuit (121); and a second housing (110) that is disposed at a distance from the first housing (120) and accommodates the AC-to-DC converter circuit (111) and the control circuit (114).

Description

ＡＣアダプタAC adapter
　本発明は、ＡＣアダプタに関する。 The present invention relates to an AC adapter.
　１つの装置本体の中に、フィルタ回路と整流器と平滑コンデンサとスイッチング回路とドライバとトランスとが収納されたＡＣアダプタが提案されている（例えば特許文献１参照）。 (1) An AC adapter in which a filter circuit, a rectifier, a smoothing capacitor, a switching circuit, a driver, and a transformer are housed in one device body has been proposed (for example, see Patent Document 1).
特開平４－１６８９７４号公報JP-A-4-168974
　しかしながら、特許文献１に記載されたＡＣアダプタの場合、フィルタ回路とスイッチング回路およびドライバとが同一の装置本体内に収納されているため、フィルタ回路とスイッチング回路およびドライバとの間の距離が必然的に近くなる。この場合、フィルタ回路のインダクタンス成分およびキャパシタ成分と、フィルタ回路とスイッチング回路およびドライバとの間に生じるキャパシタ成分と、により意図しない共振が生じ、これに起因して、スイッチング回路およびドライバの誤動作が生じスイッチング回路の発振波形が不安定になる虞があった。 However, in the case of the AC adapter described in Patent Literature 1, since the filter circuit, the switching circuit, and the driver are housed in the same apparatus main body, the distance between the filter circuit, the switching circuit, and the driver is inevitable. Become closer to In this case, unintended resonance occurs due to the inductance component and the capacitor component of the filter circuit and the capacitor component generated between the filter circuit and the switching circuit and the driver. As a result, the switching circuit and the driver malfunction. The oscillation waveform of the switching circuit may become unstable.
　本発明は、上記事由に鑑みてなされたものであり、スイッチング回路の発振波形が安定しているＡＣアダプタを提供することを目的とする。 The present invention has been made in view of the above circumstances, and has as its object to provide an AC adapter in which the oscillation waveform of a switching circuit is stable.
　上記目的を達成するために、本発明に係るＡＣアダプタは、
　ノイズ成分を除去するフィルタ回路と、
　前記フィルタ回路から出力される交流電力を直流電力に変換するＡＣ－ＤＣコンバータ回路と、
　前記ＡＣ－ＤＣコンバータ回路の動作を制御する制御回路と、
　前記フィルタ回路を収納する第１筐体と、
　前記第１筐体から距離を離して配置され前記ＡＣ－ＤＣコンバータ回路および前記制御回路を収納する第２筐体と、を備える。 In order to achieve the above object, an AC adapter according to the present invention comprises:
A filter circuit for removing noise components;
An AC-DC converter circuit for converting AC power output from the filter circuit into DC power,
A control circuit for controlling the operation of the AC-DC converter circuit;
A first housing for housing the filter circuit;
A second housing that is arranged at a distance from the first housing and houses the AC-DC converter circuit and the control circuit.
　また、本発明に係るＡＣアダプタは、
　前記ＡＣ－ＤＣコンバータ回路は、
　前記フィルタ回路から入力される交流電力を整流し平滑化する整流平滑回路と、
　複数のキャパシタと、複数のスイッチング素子と、を有する容量性電力変換回路と、を有し、
　前記制御回路は、前記複数のスイッチング素子それぞれのオンオフ状態を切り替えて前記複数のキャパシタそれぞれを充放電させることにより、前記整流平滑回路から出力された直流電力を昇降圧して出力するよう制御する、ものであってもよい。 Further, the AC adapter according to the present invention
The AC-DC converter circuit includes:
A rectifying and smoothing circuit for rectifying and smoothing the AC power input from the filter circuit,
Having a plurality of capacitors and a plurality of switching elements, and a capacitive power conversion circuit having:
The control circuit controls an on / off state of each of the plurality of switching elements to charge and discharge each of the plurality of capacitors, so that DC power output from the rectifying and smoothing circuit is stepped up and down and output. It may be.
　また、本発明に係るＡＣアダプタは、
　系統電源に電気的に接続されるコンセントに着脱可能であり、前記コンセントに装着された状態で前記系統電源から供給される交流電力を前記フィルタ回路へ供給するプラグを更に備える、ものであってもよい。 Further, the AC adapter according to the present invention
A plug that is detachable from an outlet that is electrically connected to a system power supply, and further includes a plug that supplies AC power supplied from the system power to the filter circuit while being attached to the outlet. Good.
　また、本発明に係るＡＣアダプタは、
　前記フィルタ回路と前記ＡＣ－ＤＣコンバータ回路とを電気的に接続するための導線と、
　前記導線の少なくとも一部を覆う導電性部材と、
　を更に備える、ものであってもよい。 Further, the AC adapter according to the present invention
A lead for electrically connecting the filter circuit and the AC-DC converter circuit;
A conductive member that covers at least a portion of the conductive wire,
May be further provided.
　本発明によれば、ＡＣ－ＤＣコンバータ回路および制御回路を収納する第２筐体が、フィルタ回路を収納する第１筐体から距離を離して配置されている。これにより、例えばフィルタ回路がＡＣ－ＤＣコンバータ回路および制御回路とともに同一の筐体に収納されているＡＣアダプタに比べて必然的にフィルタ回路とＡＣ－ＤＣコンバータ回路および制御回路との間の距離を長くすることができる。従って、フィルタ回路とＡＣ－ＤＣコンバータ回路および制御回路との間のキャパシタ成分を低減することができるので、フィルタ回路に起因したスイッチング回路およびドライバの誤動作が生じにくくなり、スイッチング回路の発振波形が安定する。 According to the present invention, the second housing that houses the AC-DC converter circuit and the control circuit is arranged at a distance from the first housing that houses the filter circuit. Thus, for example, the distance between the filter circuit, the AC-DC converter circuit, and the control circuit is inevitably greater than that of an AC adapter in which the filter circuit is housed in the same housing together with the AC-DC converter circuit and the control circuit. Can be longer. Therefore, a capacitor component between the filter circuit and the AC-DC converter circuit and the control circuit can be reduced, so that a malfunction of the switching circuit and the driver due to the filter circuit hardly occurs, and the oscillation waveform of the switching circuit becomes stable. I do.
本発明の実施の形態に係るＡＣアダプタの構成を示す図である。FIG. 2 is a diagram illustrating a configuration of an AC adapter according to the embodiment of the present invention. 実施の形態に係るＡＣアダプタの回路ブロック図である。FIG. 3 is a circuit block diagram of the AC adapter according to the embodiment. 変形例に係るＡＣアダプタの構成を示す図である。FIG. 9 is a diagram illustrating a configuration of an AC adapter according to a modification. 変形例に係るＡＣアダプタの回路ブロック図である。FIG. 9 is a circuit block diagram of an AC adapter according to a modification. 変形例に係るＡＣアダプタの構成を示す図である。FIG. 9 is a diagram illustrating a configuration of an AC adapter according to a modification.
　以下、本発明の実施の形態に係るＡＣアダプタについて図面を参照して詳細に説明する。本実施の形態に係るＡＣアダプタは、系統電源に電気的に接続されたコンセントからプラグを介して供給される交流電力を直流電力に変換して直流電源で動作する機器へ出力するものである。このＡＣアダプタは、系統電源から供給される交流に含まれるノイズ成分を除去するフィルタ回路と、フィルタ回路によりノイズ成分が除去された交流を直流に変換するＡＣ－ＤＣコンバータ回路と、ＡＣ－ＤＣコンバータ回路の動作を制御する制御回路と、を備える。そして、このＡＣアダプタは、フィルタ回路を収納する第１筐体と、第１筐体から距離を離して配置されＡＣ－ＤＣコンバータ回路および制御回路を収納する第２筐体と、を備える。これにより、フィルタ回路とＡＣ－ＤＣコンバータ回路および制御回路とを距離を離させた状態で維持するというものである。 Hereinafter, an AC adapter according to an embodiment of the present invention will be described in detail with reference to the drawings. The AC adapter according to the present embodiment converts AC power supplied via a plug from an outlet electrically connected to a system power supply to DC power, and outputs the DC power to a device operated by the DC power supply. The AC adapter includes a filter circuit for removing a noise component included in an AC supplied from a system power supply, an AC-DC converter circuit for converting the AC in which the noise component has been removed by the filter circuit to a DC, and an AC-DC converter. A control circuit for controlling the operation of the circuit. The AC adapter includes a first housing that houses the filter circuit, and a second housing that is arranged at a distance from the first housing and houses the AC-DC converter circuit and the control circuit. Thus, the filter circuit, the AC-DC converter circuit, and the control circuit are maintained at a distance from each other.
　図１に示すように、本実施の形態に係るＡＣアダプタ１は、アダプタ本体１１と、プラグユニット１２と、コネクタ１３と、を備える。また、ＡＣアダプタ１は、アダプタ本体１１とプラグユニット１２とを電気的に接続するための導線であるケーブル１４と、アダプタ本体１１とコネクタ１３とを電気的に接続するための導線であるケーブル１５と、を備える。コネクタ１３には、直流電源で駆動する機器が接続される。 As shown in FIG. 1, the AC adapter 1 according to the present embodiment includes an adapter body 11, a plug unit 12, and a connector 13. The AC adapter 1 has a cable 14 serving as a conductor for electrically connecting the adapter body 11 and the plug unit 12, and a cable 15 serving as a conductor for electrically connecting the adapter body 11 and the connector 13. And. Devices driven by a DC power supply are connected to the connector 13.
　プラグユニット１２は、図２に示すように、系統電源ＡＣに電気的に接続されたコンセントＲ１に着脱自在のプラグ１２２と、系統電源ＡＣから供給される交流に含まれるノイズ成分を除去するフィルタ回路１２１と、を有する。フィルタ回路１２１は、交流に含まれるノイズ成分を除去することにより、アダプタ本体１１で発生するノイズ成分が系統電源ＡＣ側へ伝播するのを抑制している。また、プラグユニット１２は、図１に示すように、フィルタ回路１２１とプラグ１２２とを収納する第１筐体１２０を有する。第１筐体１２０は、例えば電気的絶縁性を有する樹脂から形成されている。フィルタ回路１２１は、例えば導電パターンが形成された絶縁体基板である配線基板（図示せず）上に実装されたインダクタ素子、キャパシタ等を含む。 As shown in FIG. 2, the plug unit 12 includes a plug 122 detachable from an outlet R1 electrically connected to the system power supply AC, and a filter circuit for removing a noise component included in the alternating current supplied from the system power supply AC. 121. The filter circuit 121 removes a noise component included in the alternating current, thereby suppressing a noise component generated in the adapter main body 11 from propagating to the system power supply AC side. Further, as shown in FIG. 1, the plug unit 12 has a first housing 120 that houses the filter circuit 121 and the plug 122. The first housing 120 is formed of, for example, a resin having electrical insulation properties. The filter circuit 121 includes, for example, an inductor element, a capacitor, and the like mounted on a wiring board (not shown) which is an insulator substrate on which a conductive pattern is formed.
　アダプタ本体１１は、図２に示すように、フィルタ回路１２１によりノイズ成分が除去された交流を直流に変換するトランス１１２と出力回路１１３とを含んだＡＣ－ＤＣコンバータ回路１１１と、ＡＣ－ＤＣコンバータ回路１１１の動作を制御する制御回路１１４と、を有する。ＡＣ－ＤＣコンバータ回路１１１は、整流平滑回路１１１ａと電力変換回路１１１ｂとを有する。整流平滑回路１１１ａは、プラグユニット１２のフィルタ回路１２１にケーブル１４を介して電気的に接続された整流回路（図示せず）と、整流回路の出力端間に接続された平滑コンデンサ（図示せず）と、を備える。整流回路としては、例えばダイオードブリッジが挙げられる。電力変換回路１１１ｂは、複数のキャパシタと、複数のスイッチング素子と、を有する。この容量性電力変換回路１１１ｂとしては、例えば本願の出願人が先に開示した国際公開第２０１７／１９５５９２号公報に記載されている複数のキャパシタと、複数のスイッチング素子と、を有するチャージポンプ回路を採用することができる。整流平滑回路１１１ａおよび電力変換回路１１１ｂは、例えば導電パターンが形成された絶縁体基板である配線基板（図示ぜず）上に実装されたダイオード、キャパシタ等を含む。ケーブル１４の長さは、フィルタ回路１２１とＡＣ－ＤＣコンバータ回路１１１および制御回路１１４との間のキャパシタ成分の容量がフィルタ回路１２１、ＡＣ－ＤＣコンバータ回路１１１に含まれるキャパシタ成分の容量に比べて十分に小さくなるように設定されている。 As shown in FIG. 2, the adapter main body 11 includes an AC-DC converter circuit 111 including a transformer 112 for converting AC from which noise components have been removed by the filter circuit 121 into DC and an output circuit 113, and an AC-DC converter. A control circuit 114 for controlling the operation of the circuit 111. The AC-DC converter circuit 111 has a rectifying / smoothing circuit 111a and a power conversion circuit 111b. The rectifying and smoothing circuit 111a includes a rectifying circuit (not shown) electrically connected to the filter circuit 121 of the plug unit 12 via the cable 14, and a smoothing capacitor (not shown) connected between output terminals of the rectifying circuit. ). As the rectifier circuit, for example, a diode bridge is used. The power conversion circuit 111b has a plurality of capacitors and a plurality of switching elements. As the capacitive power conversion circuit 111b, for example, a charge pump circuit having a plurality of capacitors and a plurality of switching elements described in International Publication WO2017 / 195592 previously disclosed by the applicant of the present application is used. Can be adopted. The rectifying / smoothing circuit 111a and the power conversion circuit 111b include, for example, a diode, a capacitor, and the like mounted on a wiring board (not shown) that is an insulator substrate on which a conductive pattern is formed. The length of the cable 14 is such that the capacitance of the capacitor component between the filter circuit 121 and the AC-DC converter circuit 111 and the control circuit 114 is larger than the capacitance of the capacitor component included in the filter circuit 121 and the AC-DC converter circuit 111. It is set to be sufficiently small.
　出力回路１１３は、例えばダイオードとキャパシタとを有し、トランス１１２の二次側の出力端から出力される直流を平滑化してコネクタ１３へ出力する。また、出力回路１１３は、トランス１１２の二次側に流れる電流を限流するための限流素子（図示せず）を有するものであってもよい。 The output circuit 113 has, for example, a diode and a capacitor, and smoothes the DC output from the secondary output terminal of the transformer 112 and outputs the smoothed DC to the connector 13. The output circuit 113 may include a current limiting element (not shown) for limiting the current flowing to the secondary side of the transformer 112.
　制御回路１１４は、電力変換回路１１１ｂに含まれる複数のスイッチング素子それぞれのオンオフ状態を切り替えて複数のキャパシタそれぞれを充放電させることにより、整流平滑回路１１１ａから入力される直流電圧を昇降圧する。制御回路１１４は、電力変換回路１１１ｂが例えば前述のチャージポンプ回路である場合、複数のキャパシタが整流平滑回路１１１ａの出力端間に直列に接続された状態と、複数のキャパシタが互いに並列に接続された状態と、が交互に実現するように、複数のスイッチン素子のオンオフ状態を切り替える。制御回路１１４は、例えば１つのＩＣパッケージであり、前述の配線基板に実装されている。 The control circuit 114 switches the on / off state of each of the plurality of switching elements included in the power conversion circuit 111b to charge and discharge each of the plurality of capacitors, thereby raising and lowering the DC voltage input from the rectifying and smoothing circuit 111a. When the power conversion circuit 111b is, for example, the above-described charge pump circuit, the control circuit 114 includes a state in which a plurality of capacitors are connected in series between output terminals of the rectification / smoothing circuit 111a and a state in which the plurality of capacitors are connected in parallel with each other. The on / off state of the plurality of switching elements is switched so that the switching state is realized alternately. The control circuit 114 is, for example, one IC package, and is mounted on the above-described wiring board.
　以上説明したように、本実施の形態に係るＡＣアダプタ１によれば、ＡＣ－ＤＣコンバータ回路１１１および制御回路１１４を収納する第２筐体１１０が、フィルタ回路１２１を収納する第１筐体１２０から距離を離して配置されている。これにより、例えばフィルタ回路１２１がＡＣ－ＤＣコンバータ回路１１１および制御回路１１４とともに同一の筐体に収納されているＡＣアダプタに比べて必然的にフィルタ回路１２１とＡＣ－ＤＣコンバータ回路１１１および制御回路１１４との間の距離を長くすることができる。従って、フィルタ回路１２１とＡＣ－ＤＣコンバータ回路１１１および制御回路１１４との間のキャパシタ成分を低減することができるので、フィルタ回路１２１に起因したＡＣ－ＤＣコンバータ回路１１１および制御回路１１４の誤動作が生じにくくなる。それ故、ＡＣ－ＤＣコンバータ回路１１１のスイッチング波形が安定し、結果としてＡＣアダプタ１の出力が安定する。 As described above, according to AC adapter 1 according to the present embodiment, second housing 110 housing AC-DC converter circuit 111 and control circuit 114 is replaced with first housing 120 housing filter circuit 121. It is located at a distance from. Thus, for example, the filter circuit 121 and the AC-DC converter circuit 111 and the control circuit 114 are inevitably compared with the AC adapter housed in the same housing together with the AC-DC converter circuit 111 and the control circuit 114. And the distance between them can be lengthened. Therefore, the capacitor component between the filter circuit 121 and the AC-DC converter circuit 111 and the control circuit 114 can be reduced, and the malfunction of the AC-DC converter circuit 111 and the control circuit 114 caused by the filter circuit 121 occurs. It becomes difficult. Therefore, the switching waveform of the AC-DC converter circuit 111 is stabilized, and as a result, the output of the AC adapter 1 is stabilized.
　また、本実施の形態に係るフィルタ回路１２１は、プラグ１２２とともに第１筐体１２０に収納されている。これにより、例えばフィルタ回路１２１が第２筐体１１０に収納されているＡＣアダプタに比べて必然的にフィルタ回路１２１とプラグ１２２との間の距離を短くすることができる。従って、系統電源ＡＣ側へのノイズ成分の伝播を抑制することができる。 フ ィ ル タ Further, filter circuit 121 according to the present embodiment is housed in first housing 120 together with plug 122. Thereby, for example, the distance between the filter circuit 121 and the plug 122 can be inevitably shortened as compared with an AC adapter in which the filter circuit 121 is housed in the second housing 110. Therefore, propagation of noise components to the system power supply AC can be suppressed.
　更に、本実施の形態に係るＡＣ－ＤＣコンバータ回路１１１は、複数のキャパシタおよび複数のスイッチング素子で構成される電力変換回路１１１ｂを有する。これにより、ＡＣ－ＤＣコンバータ回路１１１の小型化が図れる。 {Further, the AC-DC converter circuit 111 according to the present embodiment includes a power conversion circuit 111b including a plurality of capacitors and a plurality of switching elements. Thus, the size of the AC-DC converter circuit 111 can be reduced.
　以上、本発明の実施の形態について説明したが、本発明は前述の実施の形態の構成に限定されるものではない。例えば図３および図４に示すように、アダプタ本体２０１１内のＡＣ－ＤＣコンバータ回路２１１１がキャパシタＣ１１、Ｃ１２を含む電力伝送回路２１１２を有するものであってもよい。なお、図３および図４において、実施の形態と同様の構成については図１および図２と同一の符号を付している。電力伝送回路２１１２は、図４に示すように、電力変換回路１１１ｂと出力回路１１３との間の２つの伝送路の一方に介挿されたキャパシタＣ１１とインダクタＬ１１との直列回路と、他方に介挿されたキャパシタＣ１２とインダクタＬ１２との直列回路と、を有する。 Although the embodiment of the present invention has been described above, the present invention is not limited to the configuration of the above embodiment. For example, as shown in FIGS. 3 and 4, the AC-DC converter circuit 2111 in the adapter main body 2011 may have a power transmission circuit 2112 including capacitors C11 and C12. In FIGS. 3 and 4, the same components as those in the embodiment are denoted by the same reference numerals as those in FIGS. As shown in FIG. 4, the power transmission circuit 2112 includes a series circuit of a capacitor C11 and an inductor L11 inserted in one of two transmission paths between the power conversion circuit 111b and the output circuit 113, and an interposed circuit in the other. And a series circuit of the inserted capacitor C12 and inductor L12.
　本構成によれば、実施の形態に係るトランス１１２を有するアダプタ本体１１に比べてアダプタ本体２０１１の小型化が図れる。 According to this configuration, the size of the adapter main body 2011 can be reduced as compared with the adapter main body 11 having the transformer 112 according to the embodiment.
　実施の形態では、電力変換回路１１１ｂがチャージポンプ回路である例について説明したが、これに限らず、他の電力変換回路であってもよい。また、実施の形態において、ＡＣ－ＤＣコンバータ回路１１１が、例えば誘導性電力変換回路を有するものであってもよい。 In the embodiment, the example has been described in which the power conversion circuit 111b is a charge pump circuit. However, the present invention is not limited to this, and another power conversion circuit may be used. In the embodiment, the AC-DC converter circuit 111 may include, for example, an inductive power conversion circuit.
　また、前述の図３および図４を用いて説明した変形例において、例えば図５に示すＡＣアダプタ３００１のように、アダプタ本体２０１１とプラグユニット１２とを電気的に接続するためのケーブル１４の全体を覆う導電性部材３０１６で覆われていることが好ましい。なお、図５において、前述の変形例と同様の構成については図３と同一の符号を付している。ここで、ケーブル１４は、アダプタ本体２０１１のＡＣ―ＤＣコンバータ回路２１１１とプラグユニット１２のフィルタ回路１２１とを電気的に接続している。導電性部材３０１６は、例えば金属製のワイヤから網目状に形成されたシート状の部材であってもよい。なお、導電性部材３０１６が、ケーブル１４の一部を覆うものであってもよい。また、実施の本構成によれば、外部から到来するノイズを抑制し、プラグユニット１２のフィルタ回路１２１に加わるノイズを低減することができる。 Further, in the modification described with reference to FIGS. 3 and 4 described above, the entirety of the cable 14 for electrically connecting the adapter main body 2011 and the plug unit 12 like an AC adapter 3001 shown in FIG. Is preferably covered with a conductive member 3016 that covers In FIG. 5, the same components as those in the above-described modification are denoted by the same reference numerals as those in FIG. Here, the cable 14 electrically connects the AC-DC converter circuit 2111 of the adapter body 2011 and the filter circuit 121 of the plug unit 12. The conductive member 3016 may be a sheet-like member formed in a mesh shape from a metal wire, for example. Note that the conductive member 3016 may cover a part of the cable 14. Further, according to the present embodiment, noise coming from the outside can be suppressed, and noise applied to the filter circuit 121 of the plug unit 12 can be reduced.
　以上、本発明の実施の形態および変形例（なお書きに記載したものを含む。以下、同様。）について説明したが、本発明はこれらに限定されるものではない。本発明は、実施の形態および変形例が適宜組み合わされたもの、それに適宜変更が加えられたものを含む。 Although the embodiments and modified examples of the present invention (including those described in the description, the same applies hereinafter) have been described above, the present invention is not limited to these. The present invention includes those in which the embodiments and the modified examples are appropriately combined, and those in which modifications are appropriately made.
　本出願は、２０１８年１０月５日に出願された日本国特許出願特願２０１８－１８９８３５号に基づく。本明細書中に日本国特許出願特願２０１８－１８９８３５号の明細書、特許請求の範囲および図面全体を参照として取り込むものとする。 This application is based on Japanese Patent Application No. 2018-189835 filed on October 5, 2018. The specification, claims and drawings of Japanese Patent Application No. 2018-189835 are incorporated herein by reference.
　本発明は、系統電源からの交流電力の供給を受けて直流電源で駆動する電気機器へ直流電力を供給するＡＣアダプタとして好適である。 The present invention is suitable as an AC adapter that supplies AC power from a system power supply and supplies DC power to an electric device driven by the DC power supply.
１，２００１,３００１：ＡＣアダプタ、１１，２０１１：アダプタ本体、１２：プラグユニット、１３：コネクタ、１４，１５：ケーブル、１１０：第２筐体、１１１，２１１１：ＡＣ－ＤＣコンバータ回路、１１１ａ：整流平滑回路、１１１ｂ：電力変換回路、１１２：トランス、１１３：出力回路、１１４：制御回路、１２０：第１筐体、１２１：フィルタ回路、１２２：プラグ、２１１２：電力伝送回路、３０１６：導電性部材、ＡＣ：系統電源、Ｃ１１，Ｃ１２：キャパシタ、Ｌ１１，Ｌ１２：インダクタ、Ｒ１：コンセント 1, 2001, 3001: AC adapter, 11, 2111: Adapter body, 12: Plug unit, 13: Connector, 14, 15: Cable, 110: Second housing, 111, 111: AC-DC converter circuit, 111a: Rectifying and smoothing circuit, 111b: power conversion circuit, 112: transformer, 113: output circuit, 114: control circuit, 120: first housing, 121: filter circuit, 122: plug, 2112: power transmission circuit, 3016: conductivity Materials, AC: system power supply, C11, C12: capacitor, L11, L12: inductor, R1: outlet

Claims (4)

  1. 　ノイズ成分を除去するフィルタ回路と、
    　前記フィルタ回路から出力される交流電力を直流電力に変換するＡＣ－ＤＣコンバータ回路と、
    　前記ＡＣ－ＤＣコンバータ回路の動作を制御する制御回路と、
    　前記フィルタ回路を収納する第１筐体と、
    　前記第１筐体から距離を離して配置され前記ＡＣ－ＤＣコンバータ回路および前記制御回路を収納する第２筐体と、を備える、
    　ＡＣアダプタ。     A filter circuit for removing noise components;
    An AC-DC converter circuit for converting AC power output from the filter circuit into DC power,
    A control circuit for controlling the operation of the AC-DC converter circuit;
    A first housing for housing the filter circuit;
    A second housing that is disposed at a distance from the first housing and houses the AC-DC converter circuit and the control circuit.
    AC adapter.
  2. 　前記ＡＣ－ＤＣコンバータ回路は、
    　前記フィルタ回路から入力される交流電力を整流し平滑化する整流平滑回路と、
    　複数のキャパシタと、複数のスイッチング素子と、を有する容量性電力変換回路と、を有し、
    　前記制御回路は、前記複数のスイッチング素子それぞれのオンオフ状態を切り替えて前記複数のキャパシタそれぞれを充放電させることにより、前記整流平滑回路から出力された直流電力を昇降圧して出力するよう制御する、
    　請求項１に記載のＡＣアダプタ。     The AC-DC converter circuit includes:
    A rectifying and smoothing circuit for rectifying and smoothing the AC power input from the filter circuit,
    Having a plurality of capacitors and a plurality of switching elements, and a capacitive power conversion circuit having:
    The control circuit controls an on / off state of each of the plurality of switching elements to charge and discharge each of the plurality of capacitors, so that the DC power output from the rectifying and smoothing circuit is stepped up and down and output.
    The AC adapter according to claim 1.
  3. 　系統電源に電気的に接続されるコンセントに着脱可能であり、前記コンセントに装着された状態で前記系統電源から供給される交流電力を前記フィルタ回路へ供給するプラグを更に備える、
    　請求項１または２に記載のＡＣアダプタ。     A plug that is detachable from an outlet electrically connected to a system power supply and supplies AC power supplied from the system power to the filter circuit while being attached to the outlet,
    The AC adapter according to claim 1.
  4. 　前記フィルタ回路と前記ＡＣ－ＤＣコンバータ回路とを電気的に接続するための導線と、
    　前記導線の少なくとも一部を覆う導電性部材と、
    　を更に備える、
    　請求項１から３のいずれか１項に記載のＡＣアダプタ。     A lead for electrically connecting the filter circuit and the AC-DC converter circuit;
    A conductive member that covers at least a portion of the conductive wire,
    Further comprising
    The AC adapter according to any one of claims 1 to 3.
PCT/JP2019/037503 2018-10-05 2019-09-25 Ac adapter WO2020071196A1 (en)

Applications Claiming Priority (2)

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JP2018-189835 2018-10-05

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0732882U (en) * 1993-11-19 1995-06-16 株式会社クラベ Noise plug element built-in plug
US20020075711A1 (en) * 2000-10-24 2002-06-20 Bel-Fuse, Inc. Split-package AC adapter
JP2007104411A (en) * 2005-10-05 2007-04-19 Matsushita Electric Ind Co Ltd Noise reduction cable and noise reduction communication device
JP2009094787A (en) * 2007-10-09 2009-04-30 Sumitomo Electric Ind Ltd Communication status display system for power line communication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0732882U (en) * 1993-11-19 1995-06-16 株式会社クラベ Noise plug element built-in plug
US20020075711A1 (en) * 2000-10-24 2002-06-20 Bel-Fuse, Inc. Split-package AC adapter
JP2007104411A (en) * 2005-10-05 2007-04-19 Matsushita Electric Ind Co Ltd Noise reduction cable and noise reduction communication device
JP2009094787A (en) * 2007-10-09 2009-04-30 Sumitomo Electric Ind Ltd Communication status display system for power line communication

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