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公开(公告)号：US07638954B2
公开(公告)日：2009-12-29
申请号：US11623363
申请日：2007-01-16
IPC分类号： G05F1/00
CPC分类号： H05B33/0815 , H05B33/0809
摘要： There is provided a light emitting diode drive apparatus which decreases a conducted emission. The light emitting diode drive apparatus includes a light emitting diode to which a voltage is applied from a voltage source, a choke coil connected in series to the light emitting diode, a rectifier diode connected in parallel to the light emitting diode and the choke coil to supply a back electromotive force generated in the choke coil to the light emitting diode, and a switching drive circuit including a switching element and a control circuit block. The switching element determines whether a current is applied or not applied to the light emitting diode. The control circuit block controls on/off timing of the switching element to control the current flowing into the light emitting diode. The choke coil is connected between the light emitting diode and the switching element.
摘要翻译： 提供了减少传导发射的发光二极管驱动装置。 发光二极管驱动装置包括从电压源施加电压的发光二极管，与发光二极管串联连接的扼流线圈，并联连接到发光二极管和扼流线圈的整流二极管， 将在扼流线圈中产生的反电动势提供给发光二极管，以及包括开关元件和控制电路块的开关驱动电路。 开关元件确定电流是施加还是不施加到发光二极管。 控制电路块控制开关元件的开/关定时以控制流入发光二极管的电流。 扼流线圈连接在发光二极管和开关元件之间。
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2.发明授权LED driving semiconductor circuit and LED driving apparatus including the same 有权LED驱动半导体电路和包括该LED驱动的LED驱动装置公开(公告)号：US07115888B2
公开(公告)日：2006-10-03
申请号：US11236818
申请日：2005-09-28
申请人： Yoshiaki Hachiya , Ryutaro Arakawa
发明人： Yoshiaki Hachiya , Ryutaro Arakawa
CPC分类号： H05B33/0815 , Y02B20/347
摘要： A LED driving semiconductor circuit of the present invention includes a first input terminal connected to a light-emitting diode, a switching device block having a first FET and a first switching device, a reference voltage terminal which is connected to the first FET and outputs the reference voltage, a start/stop circuit which outputs a start signal when the reference voltage is equal to or larger than a predetermined value and outputs a stop signal when the reference voltage is less than the predetermined value, a current detection circuit which detects the current flowing through the first switching device, and a control circuit which controls ON/OFF of the first switching device intermittently at the predetermined frequency based on the output signal of the start/stop circuit and the output signal of the current detection circuit so that the constant current flows through the light-emitting diode.
摘要翻译： 本发明的LED驱动半导体电路包括与发光二极管连接的第一输入端子，具有第一FET和第一开关器件的开关器件块，与第一FET连接的基准电压端子， 参考电压，当所述参考电压等于或大于预定值时输出起始信号的起动/停止电路，并且当所述参考电压小于所述预定值时输出停止信号;检测电流的电流检测电路 流过第一开关装置的控制电路，以及基于开始/停止电路的输出信号和电流检测电路的输出信号以预定频率间歇地控制第一开关装置的接通/断开的控制电路，使得常数 电流流过发光二极管。
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3.发明授权Reference supply voltage circuit using more than two reference supply voltages 失效参考电源电压电路使用两个以上的参考电源电压公开(公告)号：US07508254B2
公开(公告)日：2009-03-24
申请号：US11723530
申请日：2007-03-20
IPC分类号： G05F1/10
CPC分类号： G05F3/24
摘要： A reference supply voltage circuit includes a detecting device for detecting a first reference voltage, a comparator, and a preventing circuit for preventing any false operation during pre-operation indefinite time interval. The comparator outputs a signal which controls an operation circuit whose supply voltage is a second reference voltage equal to or lower than the first reference voltage. The preventing circuit maintains the second reference voltage to a circuit reference potential when the first reference voltage is lower than a first predetermined voltage, sets the second reference voltage to a voltage equal to the first reference voltage when the first reference voltage is equal to or higher than the first predetermined voltage and lower than a second predetermined voltage, and sets the second reference voltage to a voltage proportional to the first reference voltage when the first reference voltage is equal to or higher than the second predetermined voltage.
摘要翻译： 参考电源电压电路包括用于检测第一参考电压的检测装置，比较器和防止电路，用于在预先操作的不确定时间间隔期间防止任何假操作。 比较器输出控制其电源电压为第一参考电压等于或低于第一参考电压的运算电路的信号。 当第一参考电压低于第一预定电压时，防止电路将第二参考电压保持为电路参考电位，当第一参考电压等于或等于更高时，将第二参考电压设置为等于第一参考电压的电压 并且当第一参考电压等于或高于第二预定电压时，将第二参考电压设置为与第一参考电压成比例的电压。
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公开(公告)号：US07348766B2
公开(公告)日：2008-03-25
申请号：US11441374
申请日：2006-05-25
CPC分类号： B23K9/1056 , Y10T307/74
摘要： The peak current flowing to the switching device drops in a no-load state with PWM control, but because the number of switching operations is constant regardless of the load, further reducing power consumption is difficult. The switching power supply device has a PWM signal generator for generating a PWM signal, a switching device Q1 for switching the first supply voltage VIN based on the PWM signal, converters for outputting the difference between a second supply voltage and a reference voltage as a difference signal, and an intermittent oscillation control circuit for stopping the switching operation of the first switching device when the difference signal is less than a predetermined first threshold value (Vp1). The PWM signal generator changes the pulse width based on the difference signal to generate the PWM signal.
摘要翻译： 流入开关装置的峰值电流在空载状态下通过PWM控制下降，但由于不管负载如何，切换次数都是恒定的，所以进一步降低功耗是困难的。 开关电源装置具有用于产生PWM信号的PWM信号发生器，用于基于PWM信号切换第一电源电压VIN的开关器件Q1，用于将第二电源电压和参考电压之间的差作为输出的转换器，作为 差分信号和用于当差信号小于预定的第一阈值（Vp 1）时停止第一开关装置的开关操作的间歇振荡控制电路。 PWM信号发生器根据差分信号改变脉冲宽度，产生PWM信号。
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公开(公告)号：US20080018267A1
公开(公告)日：2008-01-24
申请号：US11795152
申请日：2006-01-12
IPC分类号： H01L33/00
CPC分类号： H05B33/0848 , H05B33/0815 , H05B33/0854 , H05B33/0887
摘要： An LED driving semiconductor apparatus having a larger electric power conversion efficiency and is suitable for miniaturization, and an LED driving apparatus using the same are provided. The LED driving semiconductor apparatus for driving at least one LED includes an input terminal, an output terminal, a switching element block and a controller. The input terminal is connected to a high voltage side of a rectifying circuit for rectifying an alternating current voltage, and inputs the voltage from the rectifying circuit. The output terminal is provided for supplying a current to the LED. The switching element block is connected between the input terminal and the output terminal, and has a first switching element. The controller includes a regulator for generating a power source voltage for driving and controlling the switching element block, and a drain current detector for detecting a drain current of the switching element block, and performs on/off control of the first switching element to block the drain current of the switching element block when the drain current reaches a predetermined threshold.
摘要翻译： 提供具有较大电力转换效率并适于小型化的LED驱动半导体装置，以及使用该LED驱动装置的LED驱动装置。 用于驱动至少一个LED的LED驱动半导体装置包括输入端子，输出端子，开关元件块和控制器。 输入端子连接到整流电路的高压侧，用于整流交流电压，并输入来自整流电路的电压。 输出端子用于向LED提供电流。 开关元件块连接在输入端子和输出端子之间，并具有第一开关元件。 控制器包括用于产生用于驱动和控制开关元件块的电源电压的调节器和用于检测开关元件块的漏极电流的漏极电流检测器，并且执行第一开关元件的接通/断开控制以阻止 当漏极电流达到预定阈值时开关元件块的漏极电流。
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6.发明授权Led driving semiconductor apparatus provided with controller including regulator and drain current detector of switching element block 有权LED驱动半导体装置设置有包括开关元件块的调节器和漏极电流检测器的控制器公开(公告)号：US07834828B2
公开(公告)日：2010-11-16
申请号：US11795152
申请日：2006-01-12
IPC分类号： H01L33/00
CPC分类号： H05B33/0848 , H05B33/0815 , H05B33/0854 , H05B33/0887
摘要： The LED driving semiconductor apparatus for driving at least one LED includes an input terminal, an output terminal, a switching element block and a controller. The input terminal is connected to a high voltage side of a rectifying circuit for rectifying an alternating current voltage, and inputs the voltage from the rectifying circuit. The output terminal is provided for supplying a current to the LED. The switching element block is connected between the input terminal and the output terminal, and has a first switching element. The controller includes a regulator for generating a power source voltage for driving and controlling the switching element block, and a drain current detector for detecting a drain current of the switching element block, and performs on/off control of the first switching element to block the drain current of the switching element block when the drain current reaches a predetermined threshold.
摘要翻译： 用于驱动至少一个LED的LED驱动半导体装置包括输入端子，输出端子，开关元件块和控制器。 输入端子连接到整流电路的高压侧，用于整流交流电压，并输入来自整流电路的电压。 输出端子用于向LED提供电流。 开关元件块连接在输入端子和输出端子之间，并具有第一开关元件。 控制器包括用于产生用于驱动和控制开关元件块的电源电压的调节器和用于检测开关元件块的漏极电流的漏极电流检测器，并且执行第一开关元件的接通/断开控制以阻止 当漏极电流达到预定阈值时开关元件块的漏极电流。
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公开(公告)号：US20060072324A1
公开(公告)日：2006-04-06
申请号：US11236818
申请日：2005-09-28
申请人： Yoshiaki Hachiya , Ryutaro Arakawa
发明人： Yoshiaki Hachiya , Ryutaro Arakawa
IPC分类号： F21V21/26
CPC分类号： H05B33/0815 , Y02B20/347
摘要： A LED driving semiconductor circuit of the present invention includes a first input terminal connected to a light-emitting diode, a switching device block having a first FET and a first switching device, a reference voltage terminal which is connected to the first FET and outputs the reference voltage, a start/stop circuit which outputs a start signal when the reference voltage is equal to or larger than a predetermined value and outputs a stop signal when the reference voltage is less than the predetermined value, a current detection circuit which detects the current flowing through the first switching device, and a control circuit which controls ON/OFF of the first switching device intermittently at the predetermined frequency based on the output signal of the start/stop circuit and the output signal of the current detection circuit so that the constant current flows through the light-emitting diode.
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8.发明申请Reference supply voltage circuit using more than two reference supply voltages 失效参考电源电压电路使用两个以上的参考电源电压公开(公告)号：US20070229148A1
公开(公告)日：2007-10-04
申请号：US11723530
申请日：2007-03-20
IPC分类号： G05F1/10
CPC分类号： G05F3/24
摘要： A reference supply voltage circuit includes a detecting device for detecting a first reference voltage, a comparator, and a preventing circuit for preventing any false operation during pre-operation indefinite time interval. The comparator outputs a signal which controls an operation circuit whose supply voltage is a second reference voltage equal to or lower than the first reference voltage. The preventing circuit maintains the second reference voltage to a circuit reference potential when the first reference voltage is lower than a first predetermined voltage, sets the second reference voltage to a voltage equal to the first reference voltage when the first reference voltage is equal to or higher than the first predetermined voltage and lower than a second predetermined voltage, and sets the second reference voltage to a voltage proportional to the first reference voltage when the first reference voltage is equal to or higher than the second predetermined voltage.
摘要翻译： 参考电源电压电路包括用于检测第一参考电压的检测装置，比较器和防止电路，用于在预先操作的不确定时间间隔期间防止任何假操作。 比较器输出控制其电源电压为第一参考电压等于或低于第一参考电压的运算电路的信号。 当第一参考电压低于第一预定电压时，防止电路将第二参考电压保持为电路参考电位，当第一参考电压等于或等于更高时，将第二参考电压设置为等于第一参考电压的电压 并且当第一参考电压等于或高于第二预定电压时，将第二参考电压设置为与第一参考电压成比例的电压。
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公开(公告)号：US20070170874A1
公开(公告)日：2007-07-26
申请号：US11623363
申请日：2007-01-16
IPC分类号： H05B41/36
CPC分类号： H05B33/0815 , H05B33/0809
摘要： There is provided a light emitting diode drive apparatus which decreases a conducted emission. The light emitting diode drive apparatus includes a light emitting diode to which a voltage is applied from a voltage source, a choke coil connected in series to the light emitting diode, a rectifier diode connected in parallel to the light emitting diode and the choke coil to supply a back electromotive force generated in the choke coil to the light emitting diode, and a switching drive circuit including a switching element and a control circuit block. The switching element determines whether a current is applied or not applied to the light emitting diode. The control circuit block controls on/off timing of the switching element to control the current flowing into the light emitting diode. The choke coil is connected between the light emitting diode and the switching element.
摘要翻译： 提供了减少传导发射的发光二极管驱动装置。 发光二极管驱动装置包括从电压源施加电压的发光二极管，与发光二极管串联连接的扼流线圈，并联连接到发光二极管和扼流线圈的整流二极管， 将在扼流线圈中产生的反电动势提供给发光二极管，以及包括开关元件和控制电路块的开关驱动电路。 开关元件确定电流是施加还是不施加到发光二极管。 控制电路块控制开关元件的开/关定时以控制流入发光二极管的电流。 扼流线圈连接在发光二极管和开关元件之间。
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公开(公告)号：US20060273662A1
公开(公告)日：2006-12-07
申请号：US11441374
申请日：2006-05-25
IPC分类号： B23K11/24
CPC分类号： B23K9/1056 , Y10T307/74
摘要： The peak current flowing to the switching device drops in a no-load state with PWM control, but because the number of switching operations is constant regardless of the load, further reducing power consumption is difficult. The switching power supply device has a PWM signal generator for generating a PWM signal, a switching device Q1 for switching the first supply voltage VIN based on the PWM signal, converters for outputting the difference between a second supply voltage and a reference voltage as a difference signal, and an intermittent oscillation control circuit for stopping the switching operation of the first switching device when the difference signal is less than a predetermined first threshold value (Vp1). The PWM signal generator changes the pulse width based on the difference signal to generate the PWM signal.
摘要翻译： 流入开关装置的峰值电流在空载状态下通过PWM控制下降，但由于不管负载如何，切换次数都是恒定的，所以进一步降低功耗是困难的。 开关电源装置具有用于产生PWM信号的PWM信号发生器，用于基于PWM信号切换第一电源电压VIN的开关器件Q1，用于将第二电源电压和参考电压之间的差作为输出的转换器，作为 差分信号和用于当差信号小于预定的第一阈值（Vp 1）时停止第一开关装置的开关操作的间歇振荡控制电路。 PWM信号发生器根据差分信号改变脉冲宽度，产生PWM信号。
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