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    • 51. 发明申请
    • LED DRIVING CIRCUIT AND PROTECTING CIRCUIT THEREOF
    • LED驱动电路及其保护电路
    • US20120286667A1
    • 2012-11-15
    • US13107946
    • 2011-05-15
    • Chen-Hsung Wang
    • Chen-Hsung Wang
    • H05B37/02H02H9/04
    • H05B33/0887Y02B20/341
    • An LED driving circuit for driving an LED module is provided. The LED module is coupled to an inductor and a flywheel unit to provide a continuous current conduction of the inductor. A terminal of a converting switch is coupled to the LED module, and another terminal thereof is coupled to ground through a current detection unit that generates a current feedback signal to a controller, so as to stabilize a current flowing through the LED module. The LED driving circuit also includes a protecting circuit, which detects a potential of one end of the LED module to generate a detection signal and makes/has the converting switch to be turned off responsive to the detection signal. If the converting switch is turned off, driving of the LED module is stopped.
    • 提供一种用于驱动LED模块的LED驱动电路。 LED模块耦合到电感器和飞轮单元以提供电感器的连续电流传导。 转换开关的端子耦合到LED模块,并且其另一端子通过电流检测单元耦合到地,该电流检测单元向控制器产生电流反馈信号,以便稳定流过LED模块的电流。 LED驱动电路还包括保护电路,其检测LED模块的一端的电位以产生检测信号,并使得/使转换开关响应于检测信号而被切断。 如果转换开关关闭,则LED模块的驱动停止。
    • 52. 发明授权
    • Power conversion driving circuit and fluorescent lamp driving circuit
    • 电源转换驱动电路和荧光灯驱动电路
    • US08310169B2
    • 2012-11-13
    • US12829363
    • 2010-07-01
    • Chung-Che Yu
    • Chung-Che Yu
    • H05B41/16H05B41/24H05B41/36H05B37/00H05B39/00
    • H05B33/089H05B41/2985
    • A power conversion driving circuit is provided. The power conversion drive circuit includes a converting circuit, a control circuit and a load circuit. The converting circuit is coupled to an input voltage. The control circuit is coupled to the converting circuit for controlling the converting circuit to convert the input voltage to an output voltage. The load circuit includes a load detecting unit and a load. The load is coupled to the output voltage, and the load detecting unit is coupled to a detecting voltage source. The load detecting unit generates a load detecting signal to re-start the control circuit when the load circuit is inserted into the power conversion driving circuit.
    • 提供电力转换驱动电路。 电力转换驱动电路包括转换电路,控制电路和负载电路。 转换电路耦合到输入电压。 控制电路耦合到转换电路,用于控制转换电路将输入电压转换为输出电压。 负载电路包括负载检测单元和负载。 负载耦合到输出电压,并且负载检测单元耦合到检测电压源。 当负载电路插入电力转换驱动电路时,负载检测单元产生负载检测信号以重新启动控制电路。
    • 53. 发明申请
    • LED DRIVING CIRCUIT AND LED DRIVING CONTROLLER
    • LED驱动电路和LED驱动控制器
    • US20120235570A1
    • 2012-09-20
    • US13354343
    • 2012-01-20
    • Chung-Che Yu
    • Chung-Che Yu
    • H05B37/02
    • H05B33/0815H05B33/0848
    • The present invention discloses an LED driving circuit and controller, capable of maintaining an average value of a current flowing through an LED module at a predetermined current value. The LED driving circuit and controller compensates influences of any factors deviating the average value of the current flowing through the LED module by modulating a period of constant on time or constant off time, or by modulating the determining value(s) of current peak value and/or current valley value according to a difference between an actual average value and the preset current value.
    • 本发明公开了一种LED驱动电路和控制器,其能够将流过LED模块的电流的平均值保持在预定电流值。 LED驱动电路和控制器通过调制恒定导通时间或恒定关闭时间的周期,或通过调制电流峰值的确定值来补偿影响流过LED模块的电流的平均值的任何因素的影响, /或当前谷值根据实际平均值和预置电流值之间的差值。
    • 56. 发明申请
    • LED DRIVING CIRCUIT AND FEEDBACK CONTROL CIRCUIT THEREOF
    • LED驱动电路及其反馈控制电路
    • US20120176048A1
    • 2012-07-12
    • US13241299
    • 2011-09-23
    • Hai-Po LIShian-Sung SHIULi-Min LEE
    • Hai-Po LIShian-Sung SHIULi-Min LEE
    • H05B37/02
    • H05B33/0815H05B33/0818H05B33/0827H05B33/0845Y02B20/346
    • An LED (Light-Emitting Diode) driving circuit to drive an LED module is provided. The LED driving circuit includes a converting circuit and a feedback control circuit. The converting circuit is coupled to the LED module, and converts an input voltage into an output voltage according to at least one control signal. The feedback control circuit generates the control signal to control the converting circuit to perform voltage conversion according to a feedback signal. In addition, the feedback control circuit receives a dimming signal, and is operated in a first state or a second state in response to the dimming signal, wherein the feedback control circuit adjusts the duty cycle of the control signal to have the duty cycle larger than or equal to a predetermined duty cycle in a predetermined period right after the feedback control circuit is operated from the second state to the first state.
    • 提供了用于驱动LED模块的LED(发光二极管)驱动电路。 LED驱动电路包括转换电路和反馈控制电路。 转换电路耦合到LED模块,并根据至少一个控制信号将输入电压转换成输出电压。 反馈控制电路产生控制信号以根据反馈信号控制转换电路进行电压转换。 此外,反馈控制电路接收调光信号,并响应于调光信号而在第一状态或第二状态下操作,其中反馈控制电路调节控制信号的占空比以使占空比大于 或等于在反馈控制电路从第二状态操作到第一状态之后的预定周期内的预定占空比。
    • 58. 发明申请
    • CONVERTING CONTROL CIRCUIT
    • 转换控制电路
    • US20120112646A1
    • 2012-05-10
    • US13253954
    • 2011-10-05
    • Shian-Sung SHIUHai-Po LIChih-Chun SUNGJuan-Juan LIU
    • Shian-Sung SHIUHai-Po LIChih-Chun SUNGJuan-Juan LIU
    • H05B37/02
    • H05B33/0827H05B33/0818H05B33/0824Y02B20/347
    • A converting control circuit, adapted to control a converting circuit to convert an input voltage into an output voltage for driving a load, is provided. The converting control circuit comprises a current control circuit, a first detecting circuit, a second detecting circuit, a feedback controller and a feedback circuit. The current control circuit comprises at least one control end coupled to the load to adjust a current flowing through the load. The first detecting circuit is coupled to the current control circuit and generates a first detecting signal according to the voltage at the least one control end. The second detecting signal is coupled to the converting circuit and generates a second detecting signal according to the output voltage. The feedback circuit is coupled to the first and second detecting circuit and modulates a level of the second signal according to the first detecting signal.
    • 提供了一种转换控制电路,其适于控制转换电路以将输入电压转换为用于驱动负载的输出电压。 转换控制电路包括电流控制电路,第一检测电路,第二检测电路,反馈控制器和反馈电路。 电流控制电路包括耦合到负载以调节流过负载的电流的至少一个控制端。 第一检测电路耦合到电流控制电路,并根据至少一个控制端的电压产生第一检测信号。 第二检测信号耦合到转换电路,并根据输出电压产生第二检测信号。 反馈电路耦合到第一和第二检测电路,并根据第一检测信号调制第二信号的电平。
    • 60. 发明申请
    • CIRCUIT FOR RESTRAINING SHOOT THROUGH CURRENT
    • 通过电流限制拍摄的电路
    • US20120068731A1
    • 2012-03-22
    • US13225565
    • 2011-09-06
    • Li-Min LEEChung-Che YU
    • Li-Min LEEChung-Che YU
    • H03K19/003
    • H03K19/00361
    • A circuit for restraining a shoot through current comprises a master selecting unit and a logic unit. The master selecting unit receives an input signal, and outputs first and second master selecting signals. The logic unit comprises first and second logic elements which generate first and second control signals for controlling two transistor switches connected in series. The first and second logic elements change the logic states of the first and second control signals according to the first and second master selecting signals. When the input signal is at a first logic level, the first logic element acquires a control privilege to change the logic state of the first control signal and trigger the second logic element to change the logic state of the second control signal. When the input signal is at a second logic, the second logic element acquires the control privilege.
    • 用于限制拍摄电流的电路包括主选择单元和逻辑单元。 主选择单元接收输入信号,并输出第一和第二主选择信号。 逻辑单元包括第一和第二逻辑元件,其产生用于控制串联连接的两个晶体管开关的第一和第二控制信号。 第一和第二逻辑元件根据第一和第二主选择信号改变第一和第二控制信号的逻辑状态。 当输入信号处于第一逻辑电平时,第一逻辑元件获取改变第一控制信号的逻辑状态并触发第二逻辑元件以改变第二控制信号的逻辑状态的控制权限。 当输入信号处于第二逻辑时,第二逻辑元件获取控制特权。