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公开(公告)号:US20060071614A1
公开(公告)日:2006-04-06
申请号:US10539981
申请日:2003-12-11
IPC分类号: H05B41/36
CPC分类号: H05B33/0815 , H05B33/0818 , H05B33/0851 , H05B33/0893 , Y02B20/341 , Y02B20/347
摘要: The power supply (20) for LEDs provides power to a LED light source (10) having a variable number of LEDs wired in series and/or in parallel. The power supply (20) uses current and voltage feedback to adjust power to the LEDs and provides protection to the LED light source (10). A feedback controller (27) compares sensed current and sensed voltage to a reference signal and generates a feedback signal, which is processed by a power factor corrector (124) to adjust the current flow through the transformer supplying current to the LEDs. A LED control switch (24) clamps a peak of the current to the LEDs to provide further protection to the LED light source (10). A short/open detection circuit (30) indicates any detection of a “LED outage” of the LED light source (10).
摘要翻译: 用于LED的电源(20)为具有串联和/或并联布线的可变数量的LED的LED光源(10)提供电力。 电源(20)使用电流和电压反馈来调节LED的功率并为LED光源(10)提供保护。 反馈控制器(27)将感测的电流和检测到的电压与参考信号进行比较,并产生反馈信号,该反馈信号由功率因数校正器(124)处理,以调节通过变压器向LED提供电流的电流。 LED控制开关(24)将电流的峰值钳位到LED以向LED光源(10)提供进一步的保护。 短路/开路检测电路(30)表示对LED光源(10)的“LED中断”的任何检测。
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公开(公告)号:US07262559B2
公开(公告)日:2007-08-28
申请号:US10539981
申请日:2003-12-11
IPC分类号: H01B37/02
CPC分类号: H05B33/0815 , H05B33/0818 , H05B33/0851 , H05B33/0893 , Y02B20/341 , Y02B20/347
摘要: The power supply (20) for LEDs provides power to a LED light source (10) having a variable number of LEDs wired in series and/or in parallel. The power supply (20) uses current and voltage feedback to adjust power to the LEDs and provides protection to the LED light source (10). A feedback controller (27) compares sensed current and sensed voltage to a reference signal and generates a feedback signal, which is processed by a power factor corrector (124) to adjust the current flow through the transformer supplying current to the LEDs. A LED control switch (24) clamps a peak of the current to the LEDs to provide further protection to the LED light source (10). A short/open detection circuit (30) indicates any detection of a “LED outage” of the LED light source (10).
摘要翻译: 用于LED的电源(20)为具有串联和/或并联布线的可变数量的LED的LED光源(10)提供电力。 电源(20)使用电流和电压反馈来调节LED的功率并为LED光源(10)提供保护。 反馈控制器(27)将感测的电流和检测到的电压与参考信号进行比较,并产生反馈信号,该反馈信号由功率因数校正器(124)处理,以调节通过变压器向LED提供电流的电流。 LED控制开关(24)将电流的峰值钳位到LED以向LED光源(10)提供进一步的保护。 短路/开路检测电路(30)表示对LED光源(10)的“LED中断”的任何检测。
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