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1. 发明授权

US08552942B2 LED drive circuit for SCR dimming 有权
标题翻译： LED驱动电路用于SCR调光
公开(公告)号：US08552942B2
公开(公告)日：2013-10-08
申请号：US12831239
申请日：2010-07-06
申请人： Guichao Hua , Xinke Wu , Xiaoli Yao , Liangan Ge
发明人： Guichao Hua , Xinke Wu , Xiaoli Yao , Liangan Ge
IPC分类号： G09G3/32
CPC分类号： H05B33/0815 , H02M3/156 , H02M3/33507 , Y02B20/346 , Y02B20/347 , Y02B20/348 , Y02B20/383
摘要： A LED drive circuit for SCR dimming including an external controller configured to receive AC voltage from a power network to convert the AC voltage to an AC voltage with a lacked phase by phase controlling the voltage through a thyristor, and a LED driver that includes a bridge rectifier configured to shape the AC voltage with the lacked phase output into a unidirectional pulse DC voltage, and a phase angle detecting circuit configured to shape the AC voltage signal output with lacked phase from the external controller into a saw-tooth wave pulse signal.
摘要翻译：一种用于SCR调光的LED驱动电路，包括外部控制器，该外部控制器被配置为从电力网络接收AC电压，通过相位控制通过晶闸管的电压将AC电压转换为具有缺相的AC电压;以及包括桥接器的LED驱动器整流器被配置成将具有缺相输出的交流电压整形为单向脉冲直流电压;以及相位角检测电路，其被配置为将来自外部控制器的缺相输出的交流电压信号成形为锯齿波脉冲信号。

2. 发明授权

US08294381B2 PWM dimming circuit for LED 有权
标题翻译： LED调光电路
公开(公告)号：US08294381B2
公开(公告)日：2012-10-23
申请号：US12860776
申请日：2010-08-20
申请人： Liangan Ge , Xiaoli Yao , Guichao Hua , Lijun Ren
发明人： Liangan Ge , Xiaoli Yao , Guichao Hua , Lijun Ren
IPC分类号： H05B37/02 , H05B41/36
CPC分类号： H05B33/0815
摘要： A PWM dimming circuit for a LED load including a LED load connected to the main LED drive circuit, a current loop configured to measure output current from the LED load, a current loop regulation circuit connected to the current loop, a main control circuit configured to receive a signal from the current loop when the LED load produces an output current, and a PWM dimming controller configured to provide a signal to control the current loop regulation circuit and to make the current loop operate in a closed-loop mode when the LED load produces the output current and to provide a shutdown signal to the main control circuit when the LED load does not produce the output current. When the output current is detected, the main control circuit controls the main LED drive circuit to set its output current at a predetermined load current.
摘要翻译：一种用于LED负载的PWM调光电路，包括连接到主LED驱动电路的LED负载，被配置为测量来自LED负载的输出电流的电流回路，连接到电流回路的电流回路调节电路，主控制电路，被配置为当LED负载产生输出电流时，接收来自电流回路的信号，并且PWM调光控制器被配置为提供信号以控制电流回路调节电路，并使电流回路在闭环模式下工作，当LED负载产生输出电流，并且当LED负载不产生输出电流时，向主控制电路提供关断信号。当检测到输出电流时，主控制电路控制主LED驱动电路以将其输出电流设定在预定的负载电流。

3. 发明申请

US20110080144A1 CIRCUIT TO IMPROVE LIGHT LOAD POWER FACTOR OF POWER SUPPLY 有权
标题翻译：电路改进电源的轻负载功率因数
公开(公告)号：US20110080144A1
公开(公告)日：2011-04-07
申请号：US12896259
申请日：2010-10-01
申请人： Guichao Hua , Xiaoli Yao , Liangan GE , Lijun Ren
发明人： Guichao Hua , Xiaoli Yao , Liangan GE , Lijun Ren
IPC分类号： G05F1/70
CPC分类号： H02M1/4225 , H02J7/041 , H02J7/345 , H02M2001/0032 , Y02B40/90 , Y02B70/126 , Y02B70/16 , Y02P80/112
摘要： A circuit to improve the power factor of a power supply at light load, the circuit including a rectifier bridge, a filter positioned before or after the rectifier bridge, a logic control and power drive circuit, a switching transistor, a light load detecting circuit configured to output a control signal to the logic control and power drive circuit which controls the switching transistor to conduct when a heavy load is experienced and to cut off when a light load is experienced, in order to control the working status of the filter capacitor, and a power factor correction circuit.
摘要翻译：一种提高轻载电源功率因数的电路，该电路包括整流桥，位于整流桥之前或之后的滤波器，逻辑控制和功率驱动电路，开关晶体管，轻载检测电路配置向控制开关晶体管导通的逻辑控制和电力驱动电路输出控制信号，以便在经历轻负载时切断，以便控制滤波电容器的工作状态，以及功率因数校正电路。

4. 发明申请

US20110080115A1 CONSTANT CURRENT CONTROL CIRCUIT WITH MULTIPLE OUTPUTS FOR LED DRIVER 有权
标题翻译：具有多个LED驱动器输出的恒定电流控制电路
公开(公告)号：US20110080115A1
公开(公告)日：2011-04-07
申请号：US12896445
申请日：2010-10-01
申请人： Liangan Ge , Guichao Hua , Xiaoli Yao , Xinke Wu
发明人： Liangan Ge , Guichao Hua , Xiaoli Yao , Xinke Wu
IPC分类号： H05B41/36
CPC分类号： H05B33/0812 , H05B33/0824 , Y02B20/345
摘要： A constant current control circuit with multiple outputs for a LED driver, the circuit including a single-output constant current power supply, and multiple output circuits, each output circuit comprising a current sharing circuit, a current sharing control circuit and a LED load. The LED load and the current sharing circuit are in series and form a series loop with a first terminal and a second terminal of the series loop connected to a first output terminal and a second output terminal of the constant current power supply.
摘要翻译：一种用于LED驱动器的多个输出的恒定电流控制电路，包括单输出恒流电源的电路和多个输出电路，每个输出电路包括电流共享电路，电流共享控制电路和LED负载。 LED负载和电流共享电路串联并形成串联回路，其中串联回路的第一端子和第二端子连接到恒流电源的第一输出端子和第二输出端子。

5. 发明申请

US20110001766A1 LED Drive Circuit For SCR Dimming 有权
标题翻译： LED驱动电路用于SCR调光
公开(公告)号：US20110001766A1
公开(公告)日：2011-01-06
申请号：US12831239
申请日：2010-07-06
申请人： Guichao Hua , Xinke Wu , Xiaoli Yao , Liangan Ge
发明人： Guichao Hua , Xinke Wu , Xiaoli Yao , Liangan Ge
IPC分类号： G09G5/10
CPC分类号： H05B33/0815 , H02M3/156 , H02M3/33507 , Y02B20/346 , Y02B20/347 , Y02B20/348 , Y02B20/383
摘要： A LED drive circuit for SCR dimming including an external controller configured to receive AC voltage from a power network to convert the AC voltage to an AC voltage with a lacked phase by phase controlling the voltage through a thyristor, and a LED driver that includes a bridge rectifier configured to shape the AC voltage with the lacked phase output into a unidirectional pulse DC voltage, and a phase angle detecting circuit configured to shape the AC voltage signal output with lacked phase from the external controller into a saw-tooth wave pulse signal.
摘要翻译：一种用于SCR调光的LED驱动电路，包括外部控制器，该外部控制器被配置为从电力网络接收AC电压，通过相位控制通过晶闸管的电压将AC电压转换为具有缺相的AC电压;以及包括桥接器的LED驱动器整流器被配置成将具有缺相输出的交流电压整形为单向脉冲直流电压;以及相位角检测电路，其被配置为将来自外部控制器的缺相输出的交流电压信号成形为锯齿波脉冲信号。

6. 发明授权

US08659919B2 Circuit to improve light load power factor of power supply 有权
标题翻译：电路改善电源的轻载功率因数
公开(公告)号：US08659919B2
公开(公告)日：2014-02-25
申请号：US12896259
申请日：2010-10-01
申请人： Guichao Hua , Xiaoli Yao , Liangan Ge , Lijun Ren
发明人： Guichao Hua , Xiaoli Yao , Liangan Ge , Lijun Ren
IPC分类号： H02M1/14 , H02M1/42
CPC分类号： H02M1/4225 , H02J7/041 , H02J7/345 , H02M2001/0032 , Y02B40/90 , Y02B70/126 , Y02B70/16 , Y02P80/112
摘要： A circuit to improve the power factor of a power supply at light load, the circuit including a rectifier bridge, a filter positioned before or after the rectifier bridge, a logic control and power drive circuit, a switching transistor, a light load detecting circuit configured to output a control signal to the logic control and power drive circuit which controls the switching transistor to conduct when a heavy load is experienced and to cut off when a light load is experienced, in order to control the working status of the filter capacitor, and a power factor correction circuit.
摘要翻译：一种提高轻载电源功率因数的电路，该电路包括整流桥，位于整流桥之前或之后的滤波器，逻辑控制和功率驱动电路，开关晶体管，轻载检测电路配置向控制开关晶体管导通的逻辑控制和电力驱动电路输出控制信号，以便在经历轻负载时切断，以便控制滤波电容器的工作状态，以及功率因数校正电路。

7. 发明授权

US08674621B2 Constant current control circuit with multiple outputs for LED driver 有权
标题翻译： LED驱动器的多路输出恒流控制电路
公开(公告)号：US08674621B2
公开(公告)日：2014-03-18
申请号：US12896445
申请日：2010-10-01
申请人： Liangan Ge , Guichao Hua , Xiaoli Yao , Xinke Wu
发明人： Liangan Ge , Guichao Hua , Xiaoli Yao , Xinke Wu
IPC分类号： H05B37/02 , H05B41/36
CPC分类号： H05B33/0812 , H05B33/0824 , Y02B20/345
摘要： A constant current control circuit with multiple outputs for a LED driver, the circuit including a single-output constant current power supply, and multiple output circuits, each output circuit comprising a current sharing circuit, a current sharing control circuit and a LED load. The LED load and the current sharing circuit are in series and form a series loop with a first terminal and a second terminal of the series loop connected to a first output terminal and a second output terminal of the constant current power supply.
摘要翻译：一种用于LED驱动器的多个输出的恒定电流控制电路，包括单输出恒流电源的电路和多个输出电路，每个输出电路包括电流共享电路，电流共享控制电路和LED负载。 LED负载和电流共享电路串联并形成串联回路，其中串联回路的第一端子和第二端子连接到恒流电源的第一输出端子和第二输出端子。

8. 发明申请

US20110080102A1 HIGH EFFICIENCY CONSTANT CURRENT LED DRIVER 审中-公开
标题翻译：高效率恒流LED驱动器
公开(公告)号：US20110080102A1
公开(公告)日：2011-04-07
申请号：US12896346
申请日：2010-10-01
申请人： Liangan Ge , Xiaoli Yao , Guichao Hua
发明人： Liangan Ge , Xiaoli Yao , Guichao Hua
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0827 , Y02B20/348
摘要： The present invention discloses a high efficiency constant current LED driver, which comprises a rectification bridge, a PFC main circuit, an isolated DC/DC converter, a PFC controller and a PFC bus control circuit. Since the input voltage is an intermediate PFC bus voltage, which varies with the output voltage of the DC/DC converter. When the isolated DC/DC converter is an LLC resonant circuit, the operating frequency of the LLC circuit is close to the resonant frequency within a wide output voltage range. Thus, the gain range and the operating frequency is narrow, and can enable the constant current module to work with a high efficiency at a wide output voltage range. When the isolated DC/DC converter is a symmetric half bridge, or an asymmetric half bridge or a full bridge circuit, the duty cycle of DC/DC circuit is close to 50% within a wide output voltage range. Thus, the changing range of the duty cycle of the DC/DC converter will be narrow and can improve the efficiency dramatically.
摘要翻译：本发明公开了一种高效率恒流LED驱动器，其包括整流桥，PFC主电路，隔离DC / DC转换器，PFC控制器和PFC总线控制电路。由于输入电压是中间PFC总线电压，其随着DC / DC转换器的输出电压而变化。当隔离的DC / DC转换器是LLC谐振电路时，LLC电路的工作频率接近于宽输出电压范围内的谐振频率。因此，增益范围和工作频率窄，可以使恒流模块在宽输出电压范围内以高效率工作。当隔离式DC / DC转换器为对称半桥，或非对称半桥或全桥电路时，DC / DC电路的占空比在宽输出电压范围内接近50％。因此，DC / DC转换器的占空比的变化范围将变窄，并且可以显着提高效率。

9. 发明申请

US20110043115A1 PWM DIMMING CIRCUIT FOR LED 有权
标题翻译：用于LED的PWM调制电路
公开(公告)号：US20110043115A1
公开(公告)日：2011-02-24
申请号：US12860776
申请日：2010-08-20
申请人： Liangan GE , Xiaoli YAO , Guichao HUA , Lijun REN
发明人： Liangan GE , Xiaoli YAO , Guichao HUA , Lijun REN
IPC分类号： H05B37/02
CPC分类号： H05B33/0815
摘要： A PWM dimming circuit for a LED load including a LED load connected to the main LED drive circuit, a current loop configured to measure output current from the LED load, a current loop regulation circuit connected to the current loop, a main control circuit configured to receive a signal from the current loop when the LED load produces an output current, and a PWM dimming controller configured to provide a signal to control the current loop regulation circuit and to make the current loop operate in a closed-loop mode when the LED load produces the output current and to provide a shutdown signal to the main control circuit when the LED load does not produce the output current. When the output current is detected, the main control circuit controls the main LED drive circuit to set its output current at a predetermined load current.
摘要翻译：一种用于LED负载的PWM调光电路，包括连接到主LED驱动电路的LED负载，被配置为测量来自LED负载的输出电流的电流回路，连接到电流回路的电流回路调节电路，主控制电路，当LED负载产生输出电流时，接收来自电流回路的信号，并且PWM调光控制器被配置为提供信号以控制电流回路调节电路，并使电流回路在闭环模式下工作，当LED负载产生输出电流，并且当LED负载不产生输出电流时，向主控制电路提供关断信号。当检测到输出电流时，主控制电路控制主LED驱动电路以将其输出电流设定在预定的负载电流。

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