JP2018050421A - 半導体装置及びdc−dcコンバータ - Google Patents
半導体装置及びdc−dcコンバータ Download PDFInfo
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- JP2018050421A JP2018050421A JP2016185558A JP2016185558A JP2018050421A JP 2018050421 A JP2018050421 A JP 2018050421A JP 2016185558 A JP2016185558 A JP 2016185558A JP 2016185558 A JP2016185558 A JP 2016185558A JP 2018050421 A JP2018050421 A JP 2018050421A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 43
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000002265 prevention Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification 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
- 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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/06—Frequency or rate modulation, i.e. PFM or PRM
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
-
- 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
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- Dc-Dc Converters (AREA)
Abstract
【解決手段】半導体装置2は、基準電圧Vref1を変調して基準信号Vmodを生成する変調器21と、基準信号Vmodと、出力電圧Voutに基づくフィードバック信号Vfbと、を比較した結果に基づくコンパレータ信号Vcompを生成するコンパレータ31と、コンパレータ信号Vcompに基づいて、各パルス幅が所定のパルス幅以上になるよう制限されたパルス変調信号Vpsを生成するパルス幅設定回路41と、パルス変調信号Vpsに基づく駆動信号VdrをインダクタLに出力するドライバ51と、を有する。
【選択図】図1
Description
以下、図面を参照して実施形態を説明する。
Vref2[V]=Ipeak[A]×Ri[V/A]・・・(1)
DC−DCコンバータ1の重負荷動作について説明をする。重負荷動作は、外部負荷装置Rに対する出力平均電流Iout1が軽負荷動作時よりも大きくなるように設定された動作である。
第1の実施形態では、パルス変調信号Vpsのパルス幅は、電流検出回路Dcによって設定されるが、時間検出回路Dtによって設定されても構わない。
Vref3[V]=所定時間[T]×電流源回路Igの出力電流値[A]/コンデンサCgの容量[F]・・・(2)
Claims (6)
- 基準電圧を変調して基準信号を生成する変調器と、
前記基準信号と、出力電圧に基づくフィードバック信号と、を比較した結果に基づくコンパレータ信号を生成するコンパレータと、
前記コンパレータ信号に基づいて、各パルス幅が所定のパルス幅以上になるよう制限されたパルス変調信号を生成するパルス幅設定回路と、
前記パルス変調信号に基づく駆動信号をインダクタに出力するドライバと、
を有する半導体装置。 - 前記パルス変調信号は、重負荷動作ではパルス幅変調され、軽負荷動作ではパルス周波数変調された信号によって構成される、請求項1に記載の半導体装置。
- 前記パルス幅設定回路は、各パルス幅が最小であるパルス幅信号を生成し、前記パルス幅信号に基づいて、前記パルス変調信号を生成する、請求項1に記載の半導体装置。
- 前記パルス幅設定回路は、前記ドライバが前記インダクタに出力する電流が所定のピーク電流以上になったことを検出する電流検出回路を有し、前記電流検出回路の検出結果に基づいて前記パルス幅信号を生成する、請求項3に記載の半導体装置。
- 前記パルス幅設定回路は、所定時間経過したことを検出する時間検出回路を有し、前記時間検出回路の検出結果に基づいて前記パルス幅信号を生成する、請求項3に記載の半導体装置。
- 請求項1に記載の半導体装置を有し、
前記インダクタは、前記ドライバと前記出力電圧を出力する出力端子の間に設けられ、
前記出力端子と固定電位の間には、コンデンサが設けられる、
DC−DCコンバータ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2016185558A JP6794203B2 (ja) | 2016-09-23 | 2016-09-23 | 半導体装置及びdc−dcコンバータ |
US15/439,791 US10069418B2 (en) | 2016-09-23 | 2017-02-22 | Semiconductor device and DC-DC converter |
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JP2016185558A JP6794203B2 (ja) | 2016-09-23 | 2016-09-23 | 半導体装置及びdc−dcコンバータ |
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JP2018050421A true JP2018050421A (ja) | 2018-03-29 |
JP6794203B2 JP6794203B2 (ja) | 2020-12-02 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021040419A (ja) * | 2019-09-03 | 2021-03-11 | 株式会社東芝 | Dc−dcコンバータ |
Citations (6)
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JP2006333636A (ja) * | 2005-05-26 | 2006-12-07 | Rohm Co Ltd | 降圧型スイッチングレギュレータおよびその制御回路ならびにそれを用いた電子機器 |
JP2009213228A (ja) * | 2008-03-03 | 2009-09-17 | Nec Electronics Corp | Dcコンバータ |
JP2011223825A (ja) * | 2010-04-14 | 2011-11-04 | Murata Mfg Co Ltd | Dc−dcコンバータ |
US20120153919A1 (en) * | 2010-12-17 | 2012-06-21 | Cristian Garbossa | Switching Mode Power Supply Control |
JP2013021816A (ja) * | 2011-07-11 | 2013-01-31 | Rohm Co Ltd | 降圧スイッチングレギュレータおよびその制御回路ならびにそれを用いた電子機器 |
JP2015126617A (ja) * | 2013-12-26 | 2015-07-06 | 株式会社東芝 | Dc−dcコンバータ、および、半導体集積回路 |
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TWI279955B (en) * | 2005-09-09 | 2007-04-21 | Realtek Semiconductor Corp | Switching regulator with over-current protection |
TW200713761A (en) * | 2005-09-21 | 2007-04-01 | Richtek Techohnology Corp | Circuit and method for a soft-start with residual voltage |
JP2009065753A (ja) | 2007-09-05 | 2009-03-26 | Rohm Co Ltd | スイッチングレギュレータ |
JP4720821B2 (ja) | 2007-12-14 | 2011-07-13 | ミツミ電機株式会社 | Dc−dcコンバータおよび電源制御用半導体集積回路 |
JP2010081749A (ja) | 2008-09-26 | 2010-04-08 | Fujitsu Microelectronics Ltd | Dc−dcコンバータの制御回路、およびdc−dcコンバータの制御方法 |
JP5507980B2 (ja) * | 2009-11-27 | 2014-05-28 | スパンション エルエルシー | スイッチング電源の制御回路、電子機器、及びスイッチング電源の制御方法 |
JP2012100376A (ja) * | 2010-10-29 | 2012-05-24 | Mitsumi Electric Co Ltd | スイッチング電源装置 |
US9401637B2 (en) * | 2013-03-13 | 2016-07-26 | Alpha And Omega Semiconductor Incorporated | Switching regulator with adaptive PWM/PFM modulator |
JP6253344B2 (ja) | 2013-10-28 | 2017-12-27 | ローム株式会社 | 昇降圧dc/dcコンバータおよびその制御回路、制御方法、それを用いた電子機器 |
US9577525B2 (en) * | 2014-03-04 | 2017-02-21 | Maxim Integrated Products, Inc. | Adaptive dead time control |
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2016
- 2016-09-23 JP JP2016185558A patent/JP6794203B2/ja active Active
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Patent Citations (6)
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JP2006333636A (ja) * | 2005-05-26 | 2006-12-07 | Rohm Co Ltd | 降圧型スイッチングレギュレータおよびその制御回路ならびにそれを用いた電子機器 |
JP2009213228A (ja) * | 2008-03-03 | 2009-09-17 | Nec Electronics Corp | Dcコンバータ |
JP2011223825A (ja) * | 2010-04-14 | 2011-11-04 | Murata Mfg Co Ltd | Dc−dcコンバータ |
US20120153919A1 (en) * | 2010-12-17 | 2012-06-21 | Cristian Garbossa | Switching Mode Power Supply Control |
JP2013021816A (ja) * | 2011-07-11 | 2013-01-31 | Rohm Co Ltd | 降圧スイッチングレギュレータおよびその制御回路ならびにそれを用いた電子機器 |
JP2015126617A (ja) * | 2013-12-26 | 2015-07-06 | 株式会社東芝 | Dc−dcコンバータ、および、半導体集積回路 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021040419A (ja) * | 2019-09-03 | 2021-03-11 | 株式会社東芝 | Dc−dcコンバータ |
US11451146B2 (en) | 2019-09-03 | 2022-09-20 | Kabushiki Kaisha Toshiba | DC-DC converter |
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Publication number | Publication date |
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US10069418B2 (en) | 2018-09-04 |
JP6794203B2 (ja) | 2020-12-02 |
US20180091050A1 (en) | 2018-03-29 |
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