JP2012010464A - 負荷駆動装置 - Google Patents
負荷駆動装置 Download PDFInfo
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- JP2012010464A JP2012010464A JP2010142901A JP2010142901A JP2012010464A JP 2012010464 A JP2012010464 A JP 2012010464A JP 2010142901 A JP2010142901 A JP 2010142901A JP 2010142901 A JP2010142901 A JP 2010142901A JP 2012010464 A JP2012010464 A JP 2012010464A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/38—Switched mode power supply [SMPS] using boost topology
Abstract
【解決手段】LED10に電力を供給するコンバータ回路14と、バースト信号の時比率に応じてLED10への電力供給をオンまたはオフにし、当該電力を制御すると共に、LED10への電力供給をオンしている時に、LED10への出力電流Ioutを検出して得たA/D変換値から、LED10を制御するための制御値を生成し、この制御値をコンバータ回路14に送出するフィードバック回路28と、バースト信号の周期毎に発生する前回のA/D変換値Vや前回の制御値xなどを用いて、今回生成する制御値yを補正するバースト前値補正処理回路64と、バースト信号の時比率が判定値を越えると、バースト前値補正処理回路64を動作させる時比率判定回路66と、を備えて構成される。
【選択図】図1
Description
14 コンバータ回路
28 フィードバック回路(電力制御回路)
64 バースト前値補正処理回路(前値補正処理回路)
66 時比率判定回路
Claims (3)
- 負荷に電力を供給する出力回路と、
バースト信号の時比率に応じて前記負荷への電力供給をオンまたはオフにし、当該電力を制御すると共に、前記電力供給をオンしている時に、前記負荷の状態を検出して得た検出値から、前記負荷を制御するための制御値を生成し、この制御値を前記出力回路に送出する電力制御回路と、
前記バースト信号の周期毎に発生する前記検出値と前記制御値の前値を用いて、前記制御値を補正する前値補正処理回路と、
前記バースト信号の時比率が判定値を越えると、前記前値補正処理回路を動作させる時比率判定回路と、を備えたことを特徴とする負荷駆動装置。 - 前記前値補正処理回路は、前記検出値の前値と一乃至複数の閾値との比較結果に応じて前記制御値の前値を増減させ、今回の前記制御値を生成する構成としたことを特徴とする請求項1記載の負荷駆動装置。
- 前記前値補正処理回路は、前記制御値の前値における変化の度合いと前記検出値の前値における変化の度合いとの比を求め、目標値から前記検出値の前値を差し引いた値を前記比で除算して補正値を算出し、この補正値を前記制御値の前値に合成して、今回の前記制御値を生成する構成としたことを特徴とする請求項1記載の負荷駆動装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010142901A JP4979796B2 (ja) | 2010-06-23 | 2010-06-23 | 負荷駆動装置 |
US13/166,944 US8604770B2 (en) | 2010-06-23 | 2011-06-23 | Load drive device for expanding range of output power |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010142901A JP4979796B2 (ja) | 2010-06-23 | 2010-06-23 | 負荷駆動装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012010464A true JP2012010464A (ja) | 2012-01-12 |
JP4979796B2 JP4979796B2 (ja) | 2012-07-18 |
Family
ID=45351911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010142901A Expired - Fee Related JP4979796B2 (ja) | 2010-06-23 | 2010-06-23 | 負荷駆動装置 |
Country Status (2)
Country | Link |
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US (1) | US8604770B2 (ja) |
JP (1) | JP4979796B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014017902A (ja) * | 2012-07-05 | 2014-01-30 | Shindengen Electric Mfg Co Ltd | 定電流制御電源、定電流制御方法、および定電流制御装置 |
JP2014140269A (ja) * | 2013-01-21 | 2014-07-31 | Ricoh Co Ltd | スイッチングレギュレータ |
JP2020202709A (ja) * | 2019-06-13 | 2020-12-17 | 株式会社明電舎 | 絶縁性dc/dcコンバータの動作監視装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5505473B2 (ja) * | 2012-08-02 | 2014-05-28 | Tdk株式会社 | 電源装置 |
TW201422053A (zh) * | 2012-11-29 | 2014-06-01 | Beyond Innovation Tech Co Ltd | 關聯於發光二極體的負載驅動裝置 |
US9258860B2 (en) * | 2012-11-29 | 2016-02-09 | Beyond Innovation Technology Co., Ltd. | Load driving apparatus relating to light-emitting-diodes |
DE102015202929A1 (de) * | 2015-02-18 | 2016-08-18 | Zf Friedrichshafen Ag | Ansteuereinrichtung |
JP6376067B2 (ja) * | 2015-07-27 | 2018-08-22 | 株式会社デンソー | 制御装置、および、これを用いた電動パワーステアリング装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005216842A (ja) * | 2004-01-30 | 2005-08-11 | Hitachi Lighting Ltd | 放電灯点灯装置 |
JP2009033090A (ja) * | 2007-12-27 | 2009-02-12 | Rohm Co Ltd | 駆動装置 |
JP2009141863A (ja) * | 2007-12-10 | 2009-06-25 | Samsung Electronics Co Ltd | 負荷駆動回路 |
JP2010027362A (ja) * | 2008-07-18 | 2010-02-04 | Asahi Kasei Toko Power Device Corp | 発光制御回路 |
Family Cites Families (13)
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JP3693940B2 (ja) * | 2001-07-26 | 2005-09-14 | シャープ株式会社 | スイッチング電源装置 |
JP3963257B2 (ja) * | 2002-02-14 | 2007-08-22 | 富士通株式会社 | Dc−dcコンバータ、電子機器、デューティ比設定回路 |
US7148669B2 (en) * | 2004-02-02 | 2006-12-12 | The Regents Of The University Of Colorado, A Body Corporate | Predictive digital current controllers for switching power converters |
US7557521B2 (en) * | 2004-03-15 | 2009-07-07 | Philips Solid-State Lighting Solutions, Inc. | LED power control methods and apparatus |
US7098640B2 (en) * | 2004-07-06 | 2006-08-29 | International Rectifier Corporation | Method and apparatus for intelligently setting dead time |
US8193795B2 (en) * | 2005-01-05 | 2012-06-05 | Exar, Inc. | Output current and input power regulation with a power converter |
US7589506B2 (en) * | 2005-11-03 | 2009-09-15 | International Rectifier Corporation | Signal-to-noise improvement for power loss minimizing dead time |
US7782038B2 (en) * | 2007-03-23 | 2010-08-24 | Fairchild Semiconductor Corporation | Soft start circuit with slew rate controller for voltage regulators |
WO2008131334A1 (en) * | 2007-04-19 | 2008-10-30 | Summit Microelectronics, Inc. | Battery charging systems and methods with adjustable current limit |
WO2008140734A1 (en) * | 2007-05-08 | 2008-11-20 | International Rectifier Corporation | Digital pwm modulator with fast dynamic response and fine resolution |
US8405321B2 (en) * | 2007-07-26 | 2013-03-26 | Rohm Co., Ltd. | Drive unit, smoothing circuit, DC/DC converter |
JP5174390B2 (ja) * | 2007-08-06 | 2013-04-03 | ローム株式会社 | 電源装置及びこれを備えた電子機器 |
US8575911B2 (en) * | 2010-06-28 | 2013-11-05 | Virginia Tech Intellectual Properties, Inc. | Digital hybrid V2 control for buck converters |
-
2010
- 2010-06-23 JP JP2010142901A patent/JP4979796B2/ja not_active Expired - Fee Related
-
2011
- 2011-06-23 US US13/166,944 patent/US8604770B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005216842A (ja) * | 2004-01-30 | 2005-08-11 | Hitachi Lighting Ltd | 放電灯点灯装置 |
JP2009141863A (ja) * | 2007-12-10 | 2009-06-25 | Samsung Electronics Co Ltd | 負荷駆動回路 |
JP2009033090A (ja) * | 2007-12-27 | 2009-02-12 | Rohm Co Ltd | 駆動装置 |
JP2010027362A (ja) * | 2008-07-18 | 2010-02-04 | Asahi Kasei Toko Power Device Corp | 発光制御回路 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014017902A (ja) * | 2012-07-05 | 2014-01-30 | Shindengen Electric Mfg Co Ltd | 定電流制御電源、定電流制御方法、および定電流制御装置 |
JP2014140269A (ja) * | 2013-01-21 | 2014-07-31 | Ricoh Co Ltd | スイッチングレギュレータ |
JP2020202709A (ja) * | 2019-06-13 | 2020-12-17 | 株式会社明電舎 | 絶縁性dc/dcコンバータの動作監視装置 |
JP7103308B2 (ja) | 2019-06-13 | 2022-07-20 | 株式会社明電舎 | 絶縁性dc/dcコンバータの動作監視装置 |
Also Published As
Publication number | Publication date |
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JP4979796B2 (ja) | 2012-07-18 |
US20110316510A1 (en) | 2011-12-29 |
US8604770B2 (en) | 2013-12-10 |
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