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公开(公告)号：US08994277B2
公开(公告)日：2015-03-31
申请号：US13293860
申请日：2011-11-10
CPC分类号： H05B33/0806 , H05B33/0818 , H05B33/0845
摘要： A light-emitting diode (LED) driving circuit includes an LED control circuit and a power stage circuit. The LED control circuit shifts an input pulse width modulation (PWM) signal toward a higher frequency direction in a frequency domain to generate an output PWM signal having a duty cycle substantially the same as a duty cycle of the input PWM signal. The power stage circuit outputs an LED driving current according to the output PWM signal.
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公开(公告)号：US20130049612A1
公开(公告)日：2013-02-28
申请号：US13293860
申请日：2011-11-10
IPC分类号： H05B37/02
CPC分类号： H05B33/0806 , H05B33/0818 , H05B33/0845
摘要： A light-emitting diode (LED) driving circuit includes an LED control circuit and a power stage circuit. The LED control circuit shifts an input pulse width modulation (PWM) signal toward a higher frequency direction in a frequency domain to generate an output PWM signal having a duty cycle substantially the same as a duty cycle of the input PWM signal. The power stage circuit outputs an LED driving current according to the output PWM signal.
摘要翻译： 发光二极管（LED）驱动电路包括LED控制电路和功率级电路。 LED控制电路在频域中将输入脉宽调制（PWM）信号向较高频率方向移位，以产生具有与输入PWM信号的占空比基本相同的占空比的输出PWM信号。 功率级电路根据输出PWM信号输出LED驱动电流。
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3.发明授权Dimmer circuit of light emitting diode and isolated voltage generator and dimmer method thereof 失效发光二极管的调光电路和隔离电压发生器及其调光方法公开(公告)号：US08278832B2
公开(公告)日：2012-10-02
申请号：US12623449
申请日：2009-11-23
申请人： Chen-Ming Hung , Maung Maung Win , Lan-Ting Hsu , Chih-Yuan Hsieh
发明人： Chen-Ming Hung , Maung Maung Win , Lan-Ting Hsu , Chih-Yuan Hsieh
IPC分类号： H05B37/02
CPC分类号： H05B33/0854 , H05B33/0815
摘要： An isolated configuration dimmer circuit of a light emitting diode (LED) applied to a conventional triac dimmer and a dimmer method are provided. When a dimmer phase angle of the triac dimmer is regulated, a second side winding of a transformer of the isolated configuration produces a pulse width corresponding to a modulated alternating current (AC) voltage, so as to regulate the pulse width of a driving signal output by the second side winding of the transformer. In addition, the dimmer circuit regulates the magnitude of a current flowing through the light emitting diode (LED) according to the pulse width corresponding to the modulated AC voltage. Accordingly, the dimmer circuit regulates the pulse width and the magnitude of the current flowing through the LED according to the dimmer phase angle of the triac dimmer. Therefore, a dimmer range of the LED can be increased.
摘要翻译： 提供了应用于常规三端双向可控硅调光器的发光二极管（LED）的隔离配置调光电路和调光方法。 当三端双向可控硅调光器的调光相位角被调节时，隔离结构的变压器的第二侧绕组产生对应于调制交流（AC）电压的脉冲宽度，以便调节驱动信号输出的脉冲宽度 通过变压器的第二侧绕组。 此外，调光电路根据与调制的交流电压对应的脉冲宽度来调节流过发光二极管（LED）的电流的大小。 因此，调光电路根据三端双向可控硅调光器的调光相位角来调节脉冲宽度和流过LED的电流的大小。 因此，LED的调光范围可以增加。
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4.发明申请DIMMER CIRCUIT OF LIGHT EMITTING DIODE AND ISOLATED VOLTAGE GENERATOR AND DIMMER METHOD THEREOF 失效发光二极管和隔离电压发生器的调光器电路及其调光方法公开(公告)号：US20110037399A1
公开(公告)日：2011-02-17
申请号：US12623449
申请日：2009-11-23
申请人： Chen-Ming Hung , Maung Maung Win , Lan-Ting Hsu , Chih-Yuan Hsieh
发明人： Chen-Ming Hung , Maung Maung Win , Lan-Ting Hsu , Chih-Yuan Hsieh
IPC分类号： H05B37/02
CPC分类号： H05B33/0854 , H05B33/0815
摘要： An isolated configuration dimmer circuit of a light emitting diode (LED) applied to a conventional triac dimmer and a dimmer method are provided. When a dimmer phase angle of the triac dimmer is regulated, a second side winding of a transformer of the isolated configuration produces a pulse width corresponding to a modulated alternating current (AC) voltage, so as to regulate the pulse width of a driving signal output by the second side winding of the transformer. In addition, the dimmer circuit regulates the magnitude of a current flowing through the light emitting diode (LED) according to the pulse width corresponding to the modulated AC voltage. Accordingly, the dimmer circuit regulates the pulse width and the magnitude of the current flowing through the LED according to the dimmer phase angle of the triac dimmer. Therefore, a dimmer range of the LED can be increased.
摘要翻译： 提供了应用于常规三端双向可控硅调光器的发光二极管（LED）的隔离配置调光电路和调光方法。 当三端双向可控硅调光器的调光相位角被调节时，隔离结构的变压器的第二侧绕组产生对应于调制交流（AC）电压的脉冲宽度，以便调节驱动信号输出的脉冲宽度 通过变压器的第二侧绕组。 此外，调光电路根据与调制的交流电压对应的脉冲宽度来调节流过发光二极管（LED）的电流的大小。 因此，调光电路根据三端双向可控硅调光器的调光相位角来调节脉冲宽度和流过LED的电流的大小。 因此，LED的调光范围可以增加。
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