JP5498499B2 - Ledアレイに可変パワーを供給するドライバ - Google Patents
Ledアレイに可変パワーを供給するドライバ Download PDFInfo
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- JP5498499B2 JP5498499B2 JP2011528457A JP2011528457A JP5498499B2 JP 5498499 B2 JP5498499 B2 JP 5498499B2 JP 2011528457 A JP2011528457 A JP 2011528457A JP 2011528457 A JP2011528457 A JP 2011528457A JP 5498499 B2 JP5498499 B2 JP 5498499B2
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- 238000005070 sampling Methods 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 description 31
- 238000004804 winding Methods 0.000 description 12
- 230000003321 amplification Effects 0.000 description 10
- 238000003199 nucleic acid amplification method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000003491 array Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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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]
- H05B45/382—Switched mode power supply [SMPS] with galvanic isolation between input and output
-
- 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]
- H05B45/385—Switched mode power supply [SMPS] using flyback topology
-
- 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
- H05B45/355—Power factor correction [PFC]; Reactive power compensation
-
- 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]
- H05B45/375—Switched mode power supply [SMPS] using buck topology
-
- 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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Description
パワーファクタに特別な要求が無ければ、テキサスイントルメンツ社製UC384Xなどのパワーファクタ補正機能のない制御ICを選択することもできる。副制御部175は、副エラー増幅部173からの減光制御電圧信号のみに基づき、フライバックトランスフォーマT1の動作を制御するトランスフォーマ制御信号を供給するように構成されている。あるいは、副制御部175は、上記の機能を満たせば、プログラミングされたプロセッサなどを含む、別の構成であってもよい。
Claims (10)
- AC電源に位相変調減光器を介して結合できる、少なくとも1つのLEDアレイに可変パワーを供給するドライバであって、
前記AC電源との間の電磁的干渉を減衰し、前記AC電源からのACパワーをDCパワー出力に変換するように構成されたフィルタ・整流部と、
前記フィルタ・整流部からの前記DCパワー出力を受け取り、前記LEDアレイに出力電流を供給するように構成されたスイッチングパワー部と、
前記ACパワーの位相角が前記減光器によりカットされた時の前記ACパワーの位相変調情報を表す減光参照信号と、前記LEDアレイへの出力電流の平均値を表すフィードバック信号との間の比較に応じて、前記LEDアレイへの前記出力電流を決定するように構成された制御部とを有し、
前記制御部は、前記減光参照信号をサンプリングして、前記減光参照信号を低周波数範囲にするように構成された第1の副サンプリング部と、前記フィードバック信号をサンプリングして前記フィードバック信号を低周波数範囲にするように構成された第2の副サンプリング部とを有する、
ドライバ。 - 前記減光参照信号はほぼ平坦な電圧信号である、請求項1に記載のドライバ。
- 前記フィードバック信号は、前記LEDアレイへの出力電流の電流波形に応じた電圧波形に保たれる、請求項1に記載のドライバ。
- 前記制御部の交差周波数は50Hzより低い、請求項1に記載のドライバ。
- 前記交差周波数は15Hzより低い、請求項4に記載のドライバ。
- 前記スイッチングパワー部は、1段階構成であり、フライバックトランスフォーマを有する、請求項1に記載のドライバ。
- 前記制御部は、前記ACパワーの電圧波形を反映する電圧信号をサンプリングするように構成された第3の副サンプリング部を有し、前記制御部は、前記電圧信号に応じてパワーファクタ補正を行うように構成された、請求項1に記載のドライバ。
- 少なくとも1つのLEDアレイを有する照明装置であって、
前記照明装置はさらに請求項1ないし7いずれか一項に記載のドライバを有する、照明装置。 - 少なくとも1つのLEDアレイに可変パワーを供給する方法であって、
電源により前記LEDアレイに電流を供給する段階と、
前記電源の入力側における位相変調情報を表す減光参照信号と、前記LEDアレイへの電流の平均値を表すフィードバック信号との比較を行って、前記電源の入力側で減光要求信号に応じて前記電流を調整する段階とを有し、
前記調整する段階は、前記減光参照信号をサンプリングしてローパスフィルタリングする第1の副段階と、前記フィードバック信号をサンプリングしてローパスフィルタリングする第2の副段階とを有する、
方法。 - 前記調整する段階は、さらに、パワーファクタ補正をするため、前記電源の入力側における前記電圧波形を反映する電圧信号に基づく、請求項9に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200810149743.X | 2008-09-25 | ||
CN200810149743.XA CN101686587B (zh) | 2008-09-25 | 2008-09-25 | 用于向led阵列提供可变功率的驱动器 |
PCT/IB2009/053821 WO2010035155A2 (en) | 2008-09-25 | 2009-09-02 | Driver for providing variable power to a led array |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012503875A JP2012503875A (ja) | 2012-02-09 |
JP5498499B2 true JP5498499B2 (ja) | 2014-05-21 |
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Application Number | Title | Priority Date | Filing Date |
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JP2011528457A Active JP5498499B2 (ja) | 2008-09-25 | 2009-09-02 | Ledアレイに可変パワーを供給するドライバ |
Country Status (6)
Country | Link |
---|---|
US (1) | US8552662B2 (ja) |
EP (2) | EP2332392B1 (ja) |
JP (1) | JP5498499B2 (ja) |
CN (1) | CN101686587B (ja) |
ES (2) | ES2706349T3 (ja) |
WO (1) | WO2010035155A2 (ja) |
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CN101686587A (zh) | 2010-03-31 |
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US8552662B2 (en) | 2013-10-08 |
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CN101686587B (zh) | 2015-01-28 |
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