JP2022038771A - Dc-dcコンバータ - Google Patents
Dc-dcコンバータ Download PDFInfo
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- JP2022038771A JP2022038771A JP2020143414A JP2020143414A JP2022038771A JP 2022038771 A JP2022038771 A JP 2022038771A JP 2020143414 A JP2020143414 A JP 2020143414A JP 2020143414 A JP2020143414 A JP 2020143414A JP 2022038771 A JP2022038771 A JP 2022038771A
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- 238000001514 detection method Methods 0.000 claims abstract description 61
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- 238000006243 chemical reaction Methods 0.000 abstract description 19
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 24
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- 239000011780 sodium chloride Substances 0.000 description 12
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- 239000003990 capacitor Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
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- 230000000630 rising effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
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Classifications
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/14—Indicating direction of current; Indicating polarity of voltage
-
- 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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- 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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1588—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load comprising at least one synchronous rectifier element
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
図1は、第1の実施形態に係るDC-DCコンバータの一例であるDC-DCコンバータ1Aの回路図である。
図3は、DC-DCコンバータ1Aの動作波形として、制御端子Tcの電圧Vc、出力端31oの電圧VCMP、節点N1の電圧Vsw及びインダクタ21を流れるコイル電流ILを概略的に示す説明図である。なお、図3では、図の簡略化の観点から、PMOSトランジスタ11とNMOSトランジスタ12とが同時にオフするデッドタイム期間が省略されている。また、図3に示されるアッパーバー付きのPWMは、電圧VcがPMOSトランジスタ11をオンさせるタイミングがロー(L)レベルであることを示している。
図7は、第2の実施形態に係るDC-DCコンバータの一例であるDC-DCコンバータ1Bにおける逆流検出回路30Bの構成例(第2構成例)の回路図である。
図9は、第3の実施形態に係るDC-DCコンバータの一例であるDC-DCコンバータ1Cの回路図である。
同期整流トランジスタとしてのPMOSトランジスタ62は、OR回路81の出力端と接続されるゲートと、節点N11と接続されるドレインと、出力端子Toに接続されるソースと、を含んでいる。
図11は、第4の実施形態に係るDC-DCコンバータの一例であるDC-DCコンバータ1Dにおける逆流検出回路30Dの構成例(第4構成例)を示す回路図である。
3 電源端子(電源供給端子)
4 接地端子(電源供給端子)
12 NMOSトランジスタ(同期整流トランジスタ)
30A~30D 逆流検出回路
310A,310B,410C,410D 1段目差動入力回路
311 PMOSトランジスタ(第1のトランジスタ)
312 PMOSトランジスタ(第2のトランジスタ)
313,314 NMOSトランジスタ(第5のトランジスタ)
411 NMOSトランジスタ(第1のトランジスタ)
412 NMOSトランジスタ(第2のトランジスタ)
413,414 PMOSトランジスタ(第5のトランジスタ)
320,420 2段目差動入力回路
321 PMOSトランジスタ(第3のトランジスタ)
322 PMOSトランジスタ(第4のトランジスタ)
421 NMOSトランジスタ(第3のトランジスタ)
422 NMOSトランジスタ(第4のトランジスタ)
340,440 バイアス回路
62 PMOSトランジスタ(同期整流トランジスタ)
VDD 電圧(電源電圧)
GND 接地電圧(電源電圧)
VBIAS バイアス電圧
N1,N11 節点(第1の入力端)
N3,N13 節点(第2の入力端)
N4,N5,N14,N15 節点
Claims (5)
- 同期整流トランジスタと、前記同期整流トランジスタの両端の電圧に基づいて、逆電流を検出する逆流検出回路と、を具備する同期整流型のDC-DCコンバータであって、
前記逆流検出回路は、第1の入力端と接続されるゲートを含む第1のトランジスタと、前記第1のトランジスタと直列に接続される第1の抵抗と、第2の入力端と接続されるゲートを含む第2のトランジスタと、前記第2のトランジスタと直列に接続される第2の抵抗と、を有する第1段差動入力回路と、
前記第1のトランジスタと前記第1の抵抗との節点と接続されるゲートを含む第3のトランジスタと、前記第2のトランジスタと前記第2の抵抗との節点と接続されるゲートを含む第4のトランジスタと、を有する第2段差動入力回路と、を備え、
前記第1段差動入力回路は、前記第1の抵抗の前記第1のトランジスタと接続される一端に対する他端に接続されるドレインを含み、前記同期整流トランジスタと同じ導電型の第5のトランジスタを、さらに有することを特徴とするDC-DCコンバータ。 - 前記第5のトランジスタは、所定のバイアス電圧を供給するバイアス回路に接続されるゲートを含む請求項1に記載のDC-DCコンバータ。
- 前記第5のトランジスタは、電源電圧を供給する電源供給端子に接続されるゲートを含む請求項1に記載のDC-DCコンバータ。
- 前記第5のトランジスタは、接地電圧よりも高い電圧を前記電源電圧として供給する電源端子に接続されるゲートを含むNMOSトランジスタである請求項3に記載のDC-DCコンバータ。
- 前記第5のトランジスタは、接地電圧を前記電源電圧として供給する接地端子に接続されるゲートを含むPMOSトランジスタである請求項3に記載のDC-DCコンバータ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020143414A JP2022038771A (ja) | 2020-08-27 | 2020-08-27 | Dc-dcコンバータ |
US17/389,347 US11626802B2 (en) | 2020-08-27 | 2021-07-30 | Detection circuit and DC-DC converter |
CN202110950367.XA CN114123771A (zh) | 2020-08-27 | 2021-08-18 | 逆流检测电路以及直流-直流转换器 |
Applications Claiming Priority (1)
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---|---|---|---|
JP2020143414A JP2022038771A (ja) | 2020-08-27 | 2020-08-27 | Dc-dcコンバータ |
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JP2022038771A true JP2022038771A (ja) | 2022-03-10 |
JP2022038771A5 JP2022038771A5 (ja) | 2023-08-30 |
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JP2020143414A Pending JP2022038771A (ja) | 2020-08-27 | 2020-08-27 | Dc-dcコンバータ |
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US (1) | US11626802B2 (ja) |
JP (1) | JP2022038771A (ja) |
CN (1) | CN114123771A (ja) |
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WO2024119349A1 (en) * | 2022-12-06 | 2024-06-13 | Renesas Design (UK) Limited | Regulator circuit |
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US6724174B1 (en) * | 2002-09-12 | 2004-04-20 | Linear Technology Corp. | Adjustable minimum peak inductor current level for burst mode in current-mode DC-DC regulators |
JP4545525B2 (ja) | 2004-08-24 | 2010-09-15 | ルネサスエレクトロニクス株式会社 | 直流電圧変換用の半導体集積回路およびスイッチング電源装置 |
WO2006030361A1 (en) | 2004-09-14 | 2006-03-23 | Koninklijke Philips Electronics N.V. | Dc/dc converter with dynamic offset compensation |
JP4045292B1 (ja) * | 2006-08-10 | 2008-02-13 | 株式会社リコー | 同期整流型スイッチングレギュレータ、同期整流型スイッチングレギュレータの制御回路及び同期整流型スイッチングレギュレータの動作制御方法 |
JP5261919B2 (ja) * | 2006-11-10 | 2013-08-14 | 富士通セミコンダクター株式会社 | Dc−dcコンバータ及びdc−dcコンバータの制御回路 |
JP4925922B2 (ja) * | 2007-05-23 | 2012-05-09 | ルネサスエレクトロニクス株式会社 | スイッチングレギュレータ |
JP2019103199A (ja) | 2017-11-30 | 2019-06-24 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
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2020
- 2020-08-27 JP JP2020143414A patent/JP2022038771A/ja active Pending
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2021
- 2021-07-30 US US17/389,347 patent/US11626802B2/en active Active
- 2021-08-18 CN CN202110950367.XA patent/CN114123771A/zh active Pending
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CN114123771A (zh) | 2022-03-01 |
US20220069717A1 (en) | 2022-03-03 |
US11626802B2 (en) | 2023-04-11 |
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