JP2017127108A - 半導体装置およびスイッチング電源装置 - Google Patents
半導体装置およびスイッチング電源装置 Download PDFInfo
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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
- H02M3/33538—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 of the forward type
- H02M3/33546—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 of the forward type with automatic control of the output voltage or current
-
- 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
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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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
- H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
- H02M1/0019—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters the disturbance parameters being load current fluctuations
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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
- H02M1/0032—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
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- 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
- H02M1/36—Means for starting or stopping 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/01—Resonant DC/DC 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
- 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
- H02M3/33538—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 of the forward type
- H02M3/33546—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 of the forward type with automatic control of the output voltage or current
- H02M3/33553—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 of the forward type with automatic control of the output voltage or current with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
- H02M3/33569—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 having several active switching elements
- H02M3/33571—Half-bridge at primary side of an isolation transformer
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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】半導体装置1は、フィルタ1a、1b、比較回路1c、1dおよび論理積回路1eを有する。フィルタ1aは、入力信号v0に対して、第1のフィルタリング処理を行って出力信号v1を生成する。フィルタ1bは、フィルタ1aの第1の時定数よりも大きな第2の時定数を有し、出力信号v1に対して、第2のフィルタリング処理を行って出力信号v2を生成する。比較回路1cは、出力信号v1と閾値電圧Vref1との比較に基づいて、レベル信号Lv1を出力する。比較回路1dは、出力信号v2と閾値電圧Vref2との比較に基づいて、レベル信号Lv2を出力する。論理積回路1eは、レベル信号Lv1と、レベル信号Lv2との論理積演算を行う。
【選択図】図1
Description
シャントレギュレータSR1は、リファレンス端子とカソード端子との間に、抵抗R7およびコンデンサC7の直列回路が接続されている。このシャントレギュレータSR1は、出力電圧Vo(出力コンデンサC6の両端電圧)を分圧した電位と内蔵の基準電圧の差に応じた電流を発光ダイオードに流すものである。
次にスイッチング電源装置10の動作について説明する。制御IC20がスイッチング制御を開始する前では、直流入力電圧Viを受ける制御IC20の起動回路21が起動電流をコンデンサC3に供給してコンデンサC3を充電することにより、電圧VCCをVCC端子およびローサイドドライブ回路25に供給する。制御IC20がスイッチング制御を開始したら、電圧VCCは、トランスT1が備える補助巻線から供給される。
図9は本発明の自動バースト制御信号生成回路の構成例を示す図である。自動バースト制御信号生成回路40aは、ヒステリシスコンパレータcomp1、comp2、論理積回路1e、抵抗Rf、RaおよびコンデンサCca、Caを含む。なお、抵抗Rfは、図1に示す抵抗Rbに対応し、コンデンサCcaは、図1に示すコンデンサCbに対応する。自動バースト制御信号生成回路40aは、図7に示した自動バースト制御信号生成回路40に対して、新たに、ヒステリシスコンパレータcomp1、論理積回路1e、抵抗RaおよびコンデンサCaが追加されているものである。
となる。ただし、Kは増幅率であって、K=Ra12/Ra11=Ra22/Ra21である。
1a 第1のフィルタ
1b 第2のフィルタ
1c 第1の比較回路
1d 第2の比較回路
1e 論理積回路
v0 入力信号
v1 第1の出力信号
v2 第2の出力信号
Lv1 第1のレベル信号
Lv2 第2のレベル信号
Vref1 第1の閾値電圧
Vref2 第2の閾値電圧
Ra、Rb 抵抗
Ca、Cb コンデンサ
comp1、comp2 ヒステリシスコンパレータ
Claims (6)
- 入力信号に対して、第1のフィルタリング処理を行って第1の出力信号を生成する第1のフィルタと、
前記第1のフィルタの第1の時定数とは異なる第2の時定数を有し、前記第1の出力信号に対して、第2のフィルタリング処理を行って第2の出力信号を生成する第2のフィルタと、
前記第1の出力信号と第1の閾値電圧との比較に基づいて、第1のレベル信号を出力する第1の比較回路と、
前記第2の出力信号と第2の閾値電圧との比較に基づいて、第2のレベル信号を出力する第2の比較回路と、
前記第1のレベル信号と前記第2のレベル信号との論理積演算を行う論理積回路と、
を有することを特徴とする半導体装置。 - 前記第1のフィルタの前記第1の時定数は、前記第2のフィルタの前記第2の時定数よりも小さいことを特徴とする請求項1記載の半導体装置。
- 前記第1の比較回路は、第1のヒステリシスコンパレータであり、前記第2の比較回路は、第2のヒステリシスコンパレータであって、
前記第1のヒステリシスコンパレータの第1の負側入力端子に前記第1の出力信号が入力し、前記第2のヒステリシスコンパレータの第2の負側入力端子に前記第2の出力信号が入力し、
前記第1のヒステリシスコンパレータの第1の正側入力端子に入力する第1の高電位レベル閾値電圧は、前記第2のヒステリシスコンパレータの第2の正側入力端子に入力する第2の高電位レベル閾値電圧よりも大きく、
前記第1のヒステリシスコンパレータの第1の正側入力端子に入力する第1の低電位レベル閾値電圧は、前記第2のヒステリシスコンパレータの第2の正側入力端子に入力する第2の低電位レベル閾値電圧よりも大きい、
ことを特徴とする請求項1記載の半導体装置。 - 直列に接続された第1のスイッチング素子および第2のスイッチング素子と、前記第1のスイッチング素子または前記第2のスイッチング素子と並列に接続された共振リアクトルおよび共振コンデンサの直列回路と、前記第1のスイッチング素子および前記第2のスイッチング素子を交互にオン/オフ制御する制御回路とを備えた電流共振型のスイッチング電源装置において、
直列に接続された前記共振リアクトルおよび前記共振コンデンサを流れる共振電流を分流し、分流された電流を第1の電圧信号に変換して出力する分流回路と、
負荷検出回路と、を備え、
前記負荷検出回路は、
前記第1の電圧信号およびGNDレベルの第2の電圧信号を切り替えて第3の電圧信号を生成する切替回路と、
前記第3の電圧信号に対して、第1のフィルタリング処理を行って第1の出力信号を生成する第1のフィルタと、前記第1のフィルタの第1の時定数とは異なる第2の時定数を有し、前記第1の出力信号に対して、第2のフィルタリング処理を行って第2の出力信号を生成する第2のフィルタと、前記第1の出力信号と第1の閾値電圧との比較に基づいて、第1のレベル信号を出力する第1の比較回路と、前記第2の出力信号と第2の閾値電圧との比較に基づいて、第2のレベル信号を出力する第2の比較回路と、前記第1のレベル信号と前記第2のレベル信号との論理積演算を行ってバースト制御信号を生成する論理積回路と、を含むバースト制御信号生成回路と、
を有することを特徴とするスイッチング電源装置。 - 前記第1のフィルタの前記第1の時定数は、前記第2のフィルタの前記第2の時定数よりも小さいことを特徴とする請求項4記載のスイッチング電源装置。
- 前記第1の比較回路は、第1のヒステリシスコンパレータであり、前記第2の比較回路は、第2のヒステリシスコンパレータであって、
前記第1のヒステリシスコンパレータの第1の負側入力端子に前記第1の出力信号が入力し、前記第2のヒステリシスコンパレータの第2の負側入力端子に前記第2の出力信号が入力し、
前記第1のヒステリシスコンパレータの第1の正側入力端子に入力する第1の高電位レベル閾値電圧は、前記第2のヒステリシスコンパレータの第2の正側入力端子に入力する第2の高電位レベル閾値電圧よりも大きく、
前記第1のヒステリシスコンパレータの第1の正側入力端子に入力する第1の低電位レベル閾値電圧は、前記第2のヒステリシスコンパレータの第2の正側入力端子に入力する第2の低電位レベル閾値電圧よりも大きい、
ことを特徴とする請求項4記載のスイッチング電源装置。
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Cited By (2)
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JP2020058213A (ja) * | 2018-10-02 | 2020-04-09 | 富士電機株式会社 | スイッチング電源装置の制御装置 |
KR20230009276A (ko) * | 2021-07-08 | 2023-01-17 | 하이닝 에스윈 아이씨 디자인 씨오., 엘티디. | 구동 시스템, 구동 방법, 컴퓨터 시스템 및 판독가능 매체 |
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CN106664022B (zh) * | 2015-01-20 | 2020-05-22 | 富士电机株式会社 | 开关电源装置 |
US10170974B1 (en) * | 2017-07-28 | 2019-01-01 | Apple Inc. | Variable frequency and burst mode operation of primary resonant flyback converters |
JP7200727B2 (ja) * | 2019-02-14 | 2023-01-10 | 富士電機株式会社 | スイッチング電源の制御装置 |
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US20170201183A1 (en) | 2017-07-13 |
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