JP2011249328A - Pwm調光制御を具備するledシステム又はその他の負荷に対するインダクタ予備充電を具備する駆動システム - Google Patents
Pwm調光制御を具備するledシステム又はその他の負荷に対するインダクタ予備充電を具備する駆動システム Download PDFInfo
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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]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
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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]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
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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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
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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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/38—Switched mode power supply [SMPS] using boost topology
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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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
【解決手段】 本方法は、負荷と関連する制御信号を受け取ることを包含しており、該制御信号はスイッチングモード電源の観点から負荷変化を発生させるべきものである。本方法は、更に、該制御信号に応答して、該電源のインダクタを介しての電流を該電源をして調節させることを包含している。本方法は、更に、該負荷変化の時間を遅延させるために該制御信号の送給を遅延させることを包含しており、該インダクタを介しての該電流は該遅延期間中に増加する。該制御信号は、1個又はそれ以上のLEDをターンオンさせるための要求を包含することが可能である。該負荷は電流調整器を包含することが可能である。本方法は、更に、該インダクタを介しての該電流が特定したレベルに到達するなどのように該遅延の後に該電流調整器へ該要求を供給することを包含することが可能である。該電源の出力に結合されているコンデンサにおける電圧スパイク及び可聴的ノイズを最小とさせることが可能である。
【選択図】 図1
Description
102: スイッチングモード電源
104: LEDストリング
106: 電流調整器
116: LED
120: 制御器
Claims (20)
- 負荷と関連する制御信号を受け取り、該制御信号はスイッチングモード電源の観点から負荷変化を発生させ、
該電源をして該制御信号に応答して該電源のインダクタを介しての電流を調節させ、且つ
該負荷変化の時間を遅延させるために該制御信号の送給を遅延させ、該インダクタを介しての該電流が遅延期間中に増加する、
ことを包含していることを特徴とする方法。 - 請求項1において、
該制御信号が1個又はそれ以上の発光ダイオード(LED)をターンオンさせる要求を有しており、
該負荷が電流調整器を有しており、且つ
本方法が、更に、該遅延の後に該要求を該電流調整器へ供給することを包含している、ことを特徴とする方法。 - 請求項2において、該遅延の後に該要求を該電流調整器へ供給する場合に、
該要求を該電流調整器へ供給する前に、該インダクタを介しての電流が特定したレベルに到達するまで待機する、
ことを特徴とする方法。 - 請求項3において、該特定したレベルが該電源の少なくとも一つのパラメータに基いている方法。
- 請求項4において、更に、
該電流の該特定したレベルを適応的に決定する、
ことを包含していることを特徴とする方法。 - 請求項2において、
該1個又はそれ以上のLEDをターンオンさせるための該要求を受け取る場合に、パルス幅変調(PWM)制御信号における1個のパルスを受け取り、且つ
該遅延の後に該電流調整器へ該要求を供給する場合に、該PWM制御信号における該パルスを遅延させ且つ該遅延させたパルスを該電流調整器へ供給する、
ことを特徴とする方法。 - 請求項1において、
該制御信号が1個又はそれ以上の発光ダイオード(LED)をターンオフさせる要求を包含しており、
該負荷が電流調整器を包含しており、且つ
本方法が、更に、該遅延の後に該要求を該電流調整器へ供給することを包含している、
ことを特徴とする方法。 - 請求項1において、更に、
該電源の出力に結合されているコンデンサにおける電圧スパイクを最小とさせること、及び
該コンデンサからの可聴的ノイズを最小とさせること、
の内の少なくとも一つを包含していることを特徴とする方法。 - 負荷と関連する制御信号であって、スイッチングモード電源の観点から負荷変化を発生させる制御信号を受け取り、該制御信号に応答して該電源のインダクタを介しての電流を該電源をして調節させ、且つ該インダクタを介しての該電流が遅延期間中に増加することを許容するために該負荷変化の時間を遅延させるために該制御信号の送給を遅延させるべく構成されている制御器、
を有していることを特徴とする装置。 - 請求項9において、
該制御信号が1個又はそれ以上の発光ダイオード(LED)をターンオンさせるための要求を有しており、
該負荷が電流調整器を有しており、且つ
該制御器が該遅延の後に該要求を該電流調整器へ供給する構成とされている、
ことを特徴とする装置。 - 請求項10において、該制御器が、該要求を該電流調整器へ供給する前に該インダクタを介しての該電流が特定したレベルに到達することを待機する構成とされていることを特徴とする装置。
- 請求項11において、該制御器が該電源の少なくとも1個のパラメータに基いて該特定したレベルを適応的に決定する構成とされていることを特徴とする装置。
- 請求項10において、
該制御器がパルス幅変調(PWM)制御信号における1個のパルスを受け取ることにより該1個又はそれ以上のLEDをターンオンさせるための要求を受け取る構成とされており、且つ
該制御器が該PWM制御信号における該パルスを遅延させ且つ該遅延させたパルスを該電流調整器へ供給する構成とされている、
ことを特徴とする装置。 - 請求項9において、該制御器が該電源の出力に結合されているコンデンサにおける電圧スパイクを最小とさせ且つ該コンデンサからの可聴的ノイズを最小とさせる構成とされていることを特徴とする装置。
- 1個又はそれ以上の発光ダイオード(LED)、
該1個又はそれ以上のLEDに対して調整した電圧を発生する構成とされており且つインダクタを有しているスイッチングモード電源、
該1個又はそれ以上のLEDを介しての電流であって該調節された電圧に基く電流を制御する構成とされている電流調整器、
(i)該1個又はそれ以上のLEDをターンオンさせるための要求を受け取り、(ii)遅延期間中に該要求に応答して該インダクタを介しての電流を該電源をして増加させ、且つ(iii)該遅延期間の後に該要求に応答して該1個又はそれ以上のLEDを該電流調整器をしてターンオンさせる、構成とされている制御器、
を有していることを特徴とするシステム。 - 請求項15において、該制御器が、該電流調整器へ制御信号を供給する前に、該インダクタを介しての該電流が特定したレベルに到達するまで待機する構成とされていることを特徴とするシステム。
- 請求項16において、該制御器が、該電源の出力に結合されているコンデンサにおいて、電圧スパイクを最小とさせ且つ可聴的ノイズを最小とさせる構成とされていることを特徴とするシステム。
- 請求項16において、該制御器が、該電源の少なくとも1個のパラメータに基いて該特定したレベルを適応的に決定する構成とされていることを特徴とするシステム。
- 請求項15において、
該制御器がパルス幅変調(PWM)制御信号における1個のパルスを受け取ることにより該1個又はそれ以上のLEDをターンオンさせるための該要求を受け取る構成とされており、且つ
該制御器が該PWM制御信号における該パルスを遅延させ且つ該遅延させたパルスを該電流調整器へ供給する構成とされている、
ことを特徴とするシステム。 - 請求項15において、該スイッチングモード電源がブーストコンバータを有していることを特徴とするシステム。
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US12/800,875 | 2010-05-25 | ||
US12/800,875 US8294388B2 (en) | 2010-05-25 | 2010-05-25 | Driving system with inductor pre-charging for LED systems with PWM dimming control or other loads |
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US20110291576A1 (en) | 2011-12-01 |
TW201204177A (en) | 2012-01-16 |
CN102264180A (zh) | 2011-11-30 |
US8294388B2 (en) | 2012-10-23 |
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TWI565361B (zh) | 2017-01-01 |
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