JP2014223020A - 制御回路および電力変換器 - Google Patents
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- 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
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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- 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
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
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- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
- H02M1/0035—Control circuits allowing low power mode operation, e.g. in standby mode using burst mode control
-
- 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
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
【解決手段】制御回路は、制御回路に結合されるべき電力スイッチの切換えを制御する駆動信号を発生させて、電力変換器出力に結合されるべき1つ以上の負荷のエネルギ要件に応答して電力変換器出力へのエネルギの流れを調整するよう結合される駆動信号発生器を含む。無調整の休止モード制御回路は、1つ以上の負荷のエネルギ要件が第1の期間よりも長くしきい値を下回ると、駆動信号発生器を休止状態にすることによって、駆動信号発生器による電力変換器出力へのエネルギの流れの調整を中止するように結合される。駆動信号発生器は、休止状態時に1つ以上の負荷のエネルギ要件の変化に応答しないよう結合される。無調整の休止モード制御回路は、第2の期間の経過後に駆動信号発生器をパワーアップするよう結合される。
【選択図】図1
Description
本願は、代理人番号が5510P142であり2008年5月29日に出願された係属中の米国通常出願番号第12/129,474号に関する。
開示の分野
本発明は、概して、切換えモード電力変換器におけるエネルギの送出を調整する制御回路に関し、より特定的には、本発明は、無調整の休止動作モードを用いることによって軽負荷または無負荷状態下で切換えモード電力変換器のエネルギ消費を低減させる制御回路に関する。
電力変換器制御回路は、多くの目的および用途に用いられ得る。電力変換器のエネルギ消費を減らすことができる制御回路機能が求められている。具体的には、軽負荷または無負荷状態下で電力変換器のエネルギ消費を低減させる制御回路が特に求められている。これが求められているのは、電力変換器のいくつかの用途においては、長期間にわたってエネルギの送出がほとんどまたは全く必要とされていないためである。このような用途の一例として、携帯電話用のAC−DC充電器が挙げられる。AC−DC充電器は、携帯電話自体がAC−DC充電器の出力ケーブルから完全に外されている場合でも、しばしば、家またはオフィスにあるAC電源コンセントに接続されたままにされる。このような状態はしばしば無負荷状態と称される。さらに、携帯電話やデジタルスチルカメラ等の用途においては、ユニット内のバッテリが完全に充電されると、AC−DC充電器の出力によって電力供給されているユニットが停止する。これらの状態では、ユニットのエネルギ要件が劇的に低下するので、AC−DC充電器にとって非常に軽い負荷状態となる。この状態は、しばしばスタンバイまたはスリープモードと称され、長期間存在し得る。したがって、これらの非常に軽い負荷のスタンバイまたはスリープモード状態で、AC−DC充電器を高効率で、または言い換えれば可能な限り低いエネルギ消費で動作させることも求められている。
無調整の休止動作モードを用いることによって軽負荷または無負荷状態下で電力変換器のエネルギ消費を低減させる制御回路を実現するための方法および装置を開示する。以下の説明においては、本発明の完全な理解を助けるために多数の具体的な詳細を述べる。しかしながら、本発明を実施するのにこの具体的な詳細を用いる必要がないことは当業者には明らかであるだろう。他の場合には、本発明を曖昧にすることを避けるために、周知の材料または方法は詳細には説明していない。
Claims (14)
- 電力変換器において使用する制御回路であって、前記制御回路は、
電力スイッチの切換を制御するための駆動信号を発生させて、前記電力変換器の出力を調整するように結合される駆動信号発生器と、
前記駆動信号の2つのパルス間の時間がしきい値期間を上回るかどうかを示すために前記駆動信号発生器に結合されたパワーダウン検出回路と、
前記パワーダウン検出回路に結合されて、前記パワーダウン検出回路が、前記駆動信号のパルス間の時間がしきい値連続回数にわたって前記しきい値期間を上回ったことを示す場合、第1の期間にわたって前記駆動信号発生器を休止状態にするイベント検出回路とを含む、制御回路。 - 前記制御回路の外部にあるタイマに結合されるべき端子をさらに含み、
前記第1の期間が前記タイマに応答して決定される、請求項1に記載の制御回路。 - 前記第1の期間が経過した後に前記駆動信号発生器をパワーアップするよう結合されたパワーアップ検出回路をさらに含む、請求項1に記載の制御回路。
- 前記駆動信号発生器が休止状態であり、前記第1の期間の経過後に負荷のエネルギ要件の変化に応答する場合、前記駆動信号発生器は、前記負荷のエネルギ要件の変化に応答しないように結合される、請求項1に記載の制御回路。
- 前記パワーダウン検出回路に結合された発振器をさらに含み、
前記しきい値期間は、前記発振器の発振器サイクルのしきい値数を含む、請求項1に記載の制御回路。 - 前記パワーダウン検出回路は、前記発振器のサイクルをカウントするためのパワーダウンカウンタを含み、
前記イベント検出回路は、前記パワーダウン検出回路が発振器サイクルの前記しきい値数をカウントする回数をカウントするためのイベント検出カウンタを含む、請求項5に記載の制御回路。 - 前記パワーダウンカウンタはさらに、前記パワーダウンカウンタが発振器サイクルの前記しきい値数をカウントする前に駆動信号パルスの発生に応答してリセットされるよう結合される、請求項6に記載の制御回路。
- 前記イベント検出カウンタはさらに、前記パワーダウンカウンタが発振器サイクルの前記しきい値数をカウントする前に駆動信号パルスの発生に応答してリセットされるよう結合される、請求項6に記載の制御回路。
- 前記第1の期間は、動作が休止状態になると、外部バイパスコンデンサがより低いしきい値にまで放電するのにかかる時間である、請求項1に記載の制御回路。
- 前記制御回路は、前記外部バイパスコンデンサの電圧と前記より低いしきい値との比較に応じてパワーアップ信号を生成するように構成される、請求項9に記載の制御回路。
- 電力変換器であって、
前記電力変換器の入力と出力との間に結合されるエネルギ伝達要素と、
前記電力変換器の前記入力から前記出力へのエネルギの伝達を調整するよう前記エネルギ伝達要素に結合されるスイッチと、
前記スイッチの切換えを制御するよう前記スイッチに結合される制御回路とを含み、
前記制御回路は、
前記出力に結合されるべき1つ以上の負荷のエネルギ要件に応答して前記出力を調整するために、前記スイッチの切換えを制御するべき駆動信号を発生させるよう結合される駆動信号発生器と、
前記1つ以上の負荷の前記エネルギ要件が第1の期間よりも長くしきい値を下回ると、前記駆動信号発生器を休止状態にすることによって、前記駆動信号発生器による前記出力の調整を中止するように結合される無調整の休止モード制御回路とを含み、前記駆動信号発生器は、休止状態であれば、前記1つ以上の負荷のエネルギ要件の変化に応答しないように結合され、前記無調整の休止モード制御回路は、第2の期間の経過後に前記駆動信号発生器をパワーアップするように結合され、前記駆動信号発生器は、前記第2の期間の経過後に前記1つ以上の負荷のエネルギ要件の変化に再び応答するように結合される、電力変換器。 - 前記制御回路は、前記1つ以上の負荷のエネルギ要件を表すフィードバック信号を受信するように結合される、請求項11に記載の電力変換器。
- 前記第1の期間は、整数N個の連続する駆動信号間の時間が第3の期間を上回ると、前記第2の期間の開始を行うイベントカウンタによって決定される、請求項11に記載の電力変換器。
- 前記第3の期間は、前記制御回路の一部を形成する発振器回路の50〜250サイクルの間の期間である、請求項13に記載の電力変換器。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/366,574 US7995359B2 (en) | 2009-02-05 | 2009-02-05 | Method and apparatus for implementing an unregulated dormant mode with an event counter in a power converter |
| US12/366,574 | 2009-02-05 |
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| JP2010022902A Division JP2010183828A (ja) | 2009-02-05 | 2010-02-04 | 制御回路、および電力変換器の出力を制御するための方法 |
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| JP5995173B2 JP5995173B2 (ja) | 2016-09-21 |
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| JP2014181557A Expired - Fee Related JP5995173B2 (ja) | 2009-02-05 | 2014-09-05 | 制御回路および電力変換器 |
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| US7995359B2 (en) | 2009-02-05 | 2011-08-09 | Power Integrations, Inc. | Method and apparatus for implementing an unregulated dormant mode with an event counter in a power converter |
| US8385088B2 (en) * | 2010-12-06 | 2013-02-26 | Power Integrations, Inc. | Method and apparatus for implementing an unregulated dormant mode with output reset in a power converter |
| US7952895B2 (en) | 2008-05-29 | 2011-05-31 | Power Integrations, Inc. | Method and apparatus for implementing an unregulated dormant mode in a power converter |
| US8098506B2 (en) | 2009-06-02 | 2012-01-17 | Power Integrations, Inc. | Single-stage power supply with power factor correction and constant current output |
| JP5477699B2 (ja) | 2009-09-30 | 2014-04-23 | サンケン電気株式会社 | スイッチング電源装置 |
| US9510401B1 (en) * | 2010-08-24 | 2016-11-29 | Cirrus Logic, Inc. | Reduced standby power in an electronic power control system |
| US9214804B2 (en) * | 2010-11-11 | 2015-12-15 | Telefonaktiebolaget L M Ericsson (Publ) | Overload detection in a switched mode power supply |
| US8259472B2 (en) * | 2011-01-07 | 2012-09-04 | Iwatt Inc. | Switching power converter having optimal dynamic load response with ultra-low no load power consumption |
| US8638088B2 (en) * | 2011-02-02 | 2014-01-28 | International Rectifier Corporation | Load detection for switched-mode power converters |
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| US10284100B2 (en) | 2019-05-07 |
| EP2216889A3 (en) | 2014-04-09 |
| US8908395B2 (en) | 2014-12-09 |
| EP2216889A2 (en) | 2010-08-11 |
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| CN105932863A (zh) | 2016-09-07 |
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| EP3358734A1 (en) | 2018-08-08 |
| US7995359B2 (en) | 2011-08-09 |
| EP2216889B1 (en) | 2018-04-18 |
| US20180342956A1 (en) | 2018-11-29 |
| US20160365798A1 (en) | 2016-12-15 |
| CN110011539B (zh) | 2021-04-16 |
| CN105932863B (zh) | 2018-09-25 |
| US20110255310A1 (en) | 2011-10-20 |
| JP5995173B2 (ja) | 2016-09-21 |
| JP2010183828A (ja) | 2010-08-19 |
| CN103337960A (zh) | 2013-10-02 |
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| CN110011539A (zh) | 2019-07-12 |
| US10079544B2 (en) | 2018-09-18 |
| US9484822B2 (en) | 2016-11-01 |
| US20170358992A1 (en) | 2017-12-14 |
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