公开(公告)号：US20090072796A1

公开(公告)日：2009-03-19

申请号：US12058728

申请日：2008-03-30

申请人： Shih-Yuan WANG ,  Yung-Hsin Chiang ,  Yu-Ming Hsu

发明人： Shih-Yuan WANG ,  Yung-Hsin Chiang ,  Yu-Ming Hsu

IPC分类号： H02J7/06

CPC分类号： H02M3/155 ,  H02J7/0052 ,  H02J2007/0059

摘要： A USB charger circuit includes at least a converter, a control circuitry, a first resistor, a second resistor, an error amplifier, a sense resistor and a diode. The converter has a transistor. The control circuitry is coupled to the transistor. The control circuitry is used for producing a drive signal to the transistor. The first resistor is connected between the output node of the converter and a first node. The second resistor is connected between the first node and a second node. The error amplifier is coupled to receive a voltage divided by the first resistor and the second resistor to compare to a reference voltage. The sense resistor is connected between the second node and ground. The diode is connected between the output node of the converter and a first node.

摘要翻译： USB充电器电路至少包括转换器，控制电路，第一电阻器，第二电阻器，误差放大器，检测电阻器和二极管。 该转换器有一个晶体管。 控制电路耦合到晶体管。 控制电路用于产生到晶体管的驱动信号。 第一个电阻连接在转换器的输出节点和第一个节点之间。 第二电阻器连接在第一节点和第二节点之间。 误差放大器被耦合以接收由第一电阻器和第二电阻器分压的电压以与参考电压进行比较。 感测电阻连接在第二节点和地之间。 二极管连接在转换器的输出节点和第一个节点之间。

公开(公告)号：US08072186B2

公开(公告)日：2011-12-06

申请号：US12058728

申请日：2008-03-30

申请人： Shih-Yuan Wang ,  Yung-Hsin Chiang ,  Yu-Ming Hsu

发明人： Shih-Yuan Wang ,  Yung-Hsin Chiang ,  Yu-Ming Hsu

IPC分类号： H02J7/04

CPC分类号： H02M3/155 ,  H02J7/0052 ,  H02J2007/0059

摘要： A USB charger circuit includes at least a converter, a control circuitry, a first resistor, a second resistor, an error amplifier, a sense resistor and a diode. The converter has a transistor. The control circuitry is coupled to the transistor. The control circuitry is used for producing a drive signal to the transistor. The first resistor is connected between the output node of the converter and a first node. The second resistor is connected between the first node and a second node. The error amplifier is coupled to receive a voltage divided by the first resistor and the second resistor to compare to a reference voltage. The sense resistor is connected between the second node and ground. The diode is connected between the output node of the converter and a first node.

摘要翻译： USB充电器电路至少包括转换器，控制电路，第一电阻器，第二电阻器，误差放大器，检测电阻器和二极管。 该转换器有一个晶体管。 控制电路耦合到晶体管。 控制电路用于产生到晶体管的驱动信号。 第一个电阻连接在转换器的输出节点和第一个节点之间。 第二电阻器连接在第一节点和第二节点之间。 误差放大器被耦合以接收由第一电阻器和第二电阻器分压的电压以与参考电压进行比较。 感测电阻连接在第二节点和地之间。 二极管连接在转换器的输出节点和第一个节点之间。

公开(公告)号：US20080144236A1

公开(公告)日：2008-06-19

申请号：US11675094

申请日：2007-02-15

申请人： Yung-Hsin Chiang ,  Shih-Yuan Wang

发明人： Yung-Hsin Chiang ,  Shih-Yuan Wang

IPC分类号： H02H7/00

CPC分类号： H05B33/0827 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/341

摘要： A driving circuit includes a first light-emitting device, a first constant-current supplier, a voltage regulator circuit, an analysis and decision circuit, and a first switch. The first constant-current supplier provides a constant current to the first light-emitting device. The voltage regulator circuit provides a driving voltage to the first light-emitting device and adjusts driving voltage according to a feedback signal. The analysis and decision circuit is coupled to the voltage regulator circuit and the first light-emitting device. The analysis and decision circuit generates a first switch control signal. The first switch is coupled to the first light-emitting device, the analysis and decision circuit, and the voltage regulator circuit. The first switch is turned on and off according to the first switch control signal.

摘要翻译： 驱动电路包括第一发光器件，第一恒流供应器，稳压器电路，分析和判定电路以及第一开关。 第一恒流供应商向第一发光装置提供恒定电流。 电压调节器电路向第一发光装置提供驱动电压，并根据反馈信号调节驱动电压。 分析和判定电路耦合到电压调节器电路和第一发光器件。 分析和判定电路产生第一开关控制信号。 第一开关耦合到第一发光装置，分析和判定电路以及电压调节器电路。 根据第一开关控制信号，第一开关被接通和断开。

公开(公告)号：US07675246B2

公开(公告)日：2010-03-09

申请号：US11675094

申请日：2007-02-15

申请人： Yung-Hsin Chiang ,  Shih-Yuan Wang

发明人： Yung-Hsin Chiang ,  Shih-Yuan Wang

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/341

摘要： A driving circuit includes at least one light-emitting device, a voltage regulator circuit, an analysis and decision circuit, and a selecting circuit. The voltage regulator circuit is coupled to the light-emitting device for providing a driving voltage to drive the light-emitting device. The analysis and decision circuit is coupled to the light-emitting device for determining whether the light-emitting device is open-circuited to generate a decision result. The selecting circuit is coupled between the analysis and decision circuit and the voltage regulator circuit for selecting a maximum forward bias voltage corresponding to the light-emitting device to generate a feedback signal according to the decision result and for transmitting the feedback signal to the voltage regulator circuit. The voltage regulator circuit adjusts the driving voltage according to the feedback signal.

摘要翻译： 驱动电路包括至少一个发光装置，电压调节器电路，分析和判定电路以及选择电路。 电压调节器电路耦合到发光器件，用于提供驱动电压以驱动发光器件。 分析和判定电路耦合到发光器件，用于确定发光器件是否被开路以产生判定结果。 选择电路耦合在分析和判定电路和电压调节器电路之间，用于选择与发光器件相对应的最大正向偏置电压，以根据判定结果生成反馈信号，并将反馈信号发送到电压调节器 电路。 电压调节器电路根据反馈信号调节驱动电压。

公开(公告)号：US20140035471A1

公开(公告)日：2014-02-06

申请号：US13596073

申请日：2012-08-28

申请人： Yung-Hsin Chiang ,  Yi-Mei Li

发明人： Yung-Hsin Chiang ,  Yi-Mei Li

IPC分类号： H05B37/00

CPC分类号： H05B33/0851 ,  H05B33/0827

摘要： A current distributor includes a plurality of current adjustment units and a reference voltage adjustment unit. The plurality of current adjustment units is for distributing currents flowing through plural sets of light emitting diodes. The reference voltage adjustment unit is coupled to the plurality of current adjustment units for controlling the plurality of current adjustment units according to a reference voltage.

摘要翻译： 电流分配器包括多个电流调节单元和参考电压调节单元。 多个电流调节单元用于分配流过多组发光二极管的电流。 参考电压调整单元耦合到多个电流调节单元，用于根据参考电压控制多个电流调节单元。

公开(公告)号：US20110254467A1

公开(公告)日：2011-10-20

申请号：US12796674

申请日：2010-06-09

申请人： Yung-Hsin Chiang ,  Yi-Mei Li

发明人： Yung-Hsin Chiang ,  Yi-Mei Li

IPC分类号： H05B41/36 ,  G05F3/16

CPC分类号： H05B33/0821

摘要： A two-terminal current controller regulates a first current flowing through a load, which is coupled in parallel with the two-terminal current controller, according to a voltage established across the two-terminal current controller. When the voltage established across the two-terminal current controller does not exceed a first voltage, the two-terminal current controller conducts a second current related to a rectified AC voltage, thereby limiting the first current to zero and regulating the second current according to the load voltage. When the voltage established across the two-terminal current controller is between the first voltage and a second voltage, the two-terminal current controller conducts the second current, thereby limiting the first current to zero and limiting the second current to a constant value larger than zero. When the voltage established across the two-terminal current controller is greater than second voltage, the two-terminal current controller is turned off.

摘要翻译： 两端电流控制器根据两端电流控制器上建立的电压来调节流过负载的第一电流，该负载与两端电流控制器并联耦合。 当跨两端电流控制器建立的电压不超过第一电压时，两端电流控制器传导与整流交流电压相关的第二电流，从而将第一电流限制为零，并根据第 负载电压。 当跨两端电流控制器建立的电压在第一电压和第二电压之间时，两端电流控制器传导第二电流，从而将第一电流限制为零，并将第二电流限制在大于 零。 当两端电流控制器上建立的电压大于第二电压时，两端电流控制器关闭。

公开(公告)号：US20060279262A1

公开(公告)日：2006-12-14

申请号：US11160109

申请日：2005-06-09

申请人： Yung-Hsin Chiang ,  Lai-Hua Luo

发明人： Yung-Hsin Chiang ,  Lai-Hua Luo

IPC分类号： G05F1/00

CPC分类号： H05B33/089 ,  H01L27/0248 ,  H01L29/747 ,  H05B33/083 ,  H05B37/036 ,  Y02B20/341

摘要： An integrated circuit provides a load with back-flow and open-circuit protection and includes a load, a trigger circuit, and a shunt circuit. The integrated circuit provides large-size LED displays having series LED connection with back-flow and open-circuit protection. The shunt circuit of the integrated circuit shunts the back-flow current from the LED when an ESD is applied, and offers an alternative current path when an LED fails so that other functioning LEDs can still emit light.

摘要翻译： 集成电路为负载提供逆流和开路保护，并包括负载，触发电路和分流电路。 集成电路提供具有串联LED连接的大尺寸LED显示屏，具有回流和开路保护。 当施加ESD时，集成电路的分流电路分流来自LED的回流电流，并且当LED发生故障时提供备用电流路径，以便其他功能的LED仍能发光。

公开(公告)号：US08547025B2

公开(公告)日：2013-10-01

申请号：US13612869

申请日：2012-09-13

申请人： Yung-Hsin Chiang ,  Yi-Mei Li

发明人： Yung-Hsin Chiang ,  Yi-Mei Li

IPC分类号： H05B37/00

CPC分类号： H05B33/0821 ,  H05B33/083

摘要： An LED lighting device includes a first luminescent device for providing light according to a first current, a second luminescent device coupled in series to the first luminescent device for providing light according to a second current, a silicon-controlled rectifier coupled in parallel to the first luminescent device and configured to conduct a third current when a voltage established across the first luminescent device exceeds a break-over voltage, and a two-terminal current controller coupled in parallel with the first luminescent device and in series to the second luminescent device and configured to regulate the second current according to a voltage established across the two-terminal current controller.

摘要翻译： LED照明装置包括用于根据第一电流提供光的第一发光装置，与第一发光装置串联连接的第二发光装置，用于根据第二电流提供光;与第一发光装置并联的硅控整流器 并且被配置为当跨越第一发光装置建立的电压超过断开电压时导通第三电流;以及两端电流控制器，与第一发光装置并联并串联连接到第二发光装置，并且被配置 根据在两端电流控制器上建立的电压来调节第二电流。

公开(公告)号：US20130002158A1

公开(公告)日：2013-01-03

申请号：US13612869

申请日：2012-09-13

申请人： Yung-Hsin Chiang ,  Yi-Mei Li

发明人： Yung-Hsin Chiang ,  Yi-Mei Li

IPC分类号： H05B37/02

CPC分类号： H05B33/0821 ,  H05B33/083

摘要： An LED lighting device includes a first luminescent device for providing light according to a first current, a second luminescent device coupled in series to the first luminescent device for providing light according to a second current, a silicon-controlled rectifier coupled in parallel to the first luminescent device and configured to conduct a third current when a voltage established across the first luminescent device exceeds a break-over voltage, and a two-terminal current controller coupled in parallel with the first luminescent device and in series to the second luminescent device and configured to regulate the second current according to a voltage established across the two-terminal current controller.

摘要翻译： LED照明装置包括用于根据第一电流提供光的第一发光装置，与第一发光装置串联连接的第二发光装置，用于根据第二电流提供光;与第一发光装置并联的硅控整流器 并且被配置为当跨越第一发光装置建立的电压超过断开电压时导通第三电流;以及两端电流控制器，与第一发光装置并联并串联连接到第二发光装置，并且被配置 根据在两端电流控制器上建立的电压来调节第二电流。

公开(公告)号：US08314600B2

公开(公告)日：2012-11-20

申请号：US12754616

申请日：2010-04-06

申请人： Yung-Hsin Chiang

发明人： Yung-Hsin Chiang

IPC分类号： G05F1/565

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： Constant current driving circuit includes a latch, an ON timer, and an OFF timer. The latch outputs a switch control signal according to an ON signal and an OFF signal for controlling a power switch. The power switch is coupled between an input voltage source and an inductor. When the switch control signal controls the power switch to turn on/off, the input voltage source is able/unable to couple to the inductor through the power switch. The inductor provides an output current and an output voltage. The ON timer detects if the output current reaches a peak value for accordingly outputting the OFF signal. The OFF timer outputs the ON signal according to the output voltage and the switch control signal for control the interval of the switch control signal representing “OFF”.

摘要翻译： 恒流驱动电路包括锁存器，ON定时器和OFF定时器。 锁存器根据ON信号和OFF信号输出开关控制信号，用于控制电源开关。 电源开关耦合在输入电压源和电感之间。 当开关控制信号控制电源开关打开/关闭时，输入电压源可以/不能通过电源开关耦合到电感器。 电感提供输出电流和输出电压。 ON定时器检测输出电流是否达到峰值，从而相应地输出OFF信号。 OFF定时器根据输出电压和开关控制信号输出ON信号，以控制表示OFF的开关控制信号的间隔。