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1. 发明申请

US20100066336A1 POWER CONTROL CIRCUIT 有权
标题翻译：电源控制电路
公开(公告)号：US20100066336A1
公开(公告)日：2010-03-18
申请号：US12447766
申请日：2007-10-29
申请人： Kyoichiro Araki , Hironori Nakahara , Yoshinori Imanaka , Isao Yamamoto
发明人： Kyoichiro Araki , Hironori Nakahara , Yoshinori Imanaka , Isao Yamamoto
IPC分类号： G05F1/10
CPC分类号： H02M3/156 , H02M1/32
摘要： A control circuit 10 according to the present invention transits to a first current limiter mode when an output current of a DC-DC converter circuit reaches an upper limit current or greater in a normal mode; transits to the normal mode when the output current falls below the upper limit current in the first current limiter mode; transits to a second current limiter mode when a first predetermined period elapses without a transition to the normal mode in the first current limiter mode; and transits to the normal mode when a second predetermined period elapses in the second current limiter mode.
摘要翻译：当DC-DC转换器电路的输出电流在正常模式下达到上限电流或更大时，根据本发明的控制电路10转换到第一限流模式; 当输出电流低于第一限流器模式中的上限电流时，转换到正常模式; 当在第一限流器模式中经过第一预定时间而没有转换到正常模式时，转换到第二限流器模式; 并且当在第二限流器模式中经过第二预定时间时，转换到正常模式。

2. 发明授权

US08093876B2 Power control circuit to prevent a malfunction of a protection circuit 有权
标题翻译：电源控制电路，以防止保护电路发生故障
公开(公告)号：US08093876B2
公开(公告)日：2012-01-10
申请号：US12447766
申请日：2007-10-29
申请人： Kyoichiro Araki , Hironori Nakahara , Yoshinori Imanaka , Isao Yamamoto
发明人： Kyoichiro Araki , Hironori Nakahara , Yoshinori Imanaka , Isao Yamamoto
IPC分类号： G05F1/00
CPC分类号： H02M3/156 , H02M1/32
摘要： A control circuit 10 according to the present invention transits to a first current limiter mode when an output current of a DC-DC converter circuit reaches an upper limit current or greater in a normal mode; transits to the normal mode when the output current falls below the upper limit current in the first current limiter mode; transits to a second current limiter mode when a first predetermined period elapses without a transition to the normal mode in the first current limiter mode; and transits to the normal mode when a second predetermined period elapses in the second current limiter mode.
摘要翻译：当DC-DC转换器电路的输出电流在正常模式下达到上限电流或更大时，根据本发明的控制电路10转换到第一限流模式; 当输出电流低于第一限流器模式中的上限电流时，转换到正常模式; 当在第一限流器模式中经过第一预定时间而没有转换到正常模式时，转换到第二限流器模式; 并且当在第二限流器模式中经过第二预定时间时，转换到正常模式。

3. 发明授权

US08004213B2 Power supply, light emission control device and display device 有权
标题翻译：电源，发光控制装置及显示装置
公开(公告)号：US08004213B2
公开(公告)日：2011-08-23
申请号：US12093641
申请日：2007-02-06
申请人： Yoshinori Imanaka
发明人： Yoshinori Imanaka
IPC分类号： H05B37/02
CPC分类号： H02M3/07 , H02M3/073 , H02M2003/075
摘要： The power supply of the present invention is composed of: a charge pump circuit (54) that periodically turns on and off a plurality of charge-transfer switches (Q1 to Q4) according to clock signals (c1 and c2), thereby charges and discharges a charge storage capacitor (C1) and thus produces the desired output voltage (Vo) from an input voltage (Vi) to supply it to a load (LED); an output current detection circuit 57 for detecting an output current Io (a reference current (Im) thereof in FIG. 1) to the load; and means (a frequency conversion circuit 52 in FIG. 1) that varies the frequency of the clock signals c1 and c2 based on the result of the detection of the output current Io. With this configuration, it is possible to achieve high electric power efficiency irrespective of the magnitude of a load.
摘要翻译：本发明的电源包括：根据时钟信号（c1和c2）周期性地接通和断开多个电荷转移开关（Q1至Q4）的电荷泵电路（54），由此充电和放电电荷存储电容器（C1），从而从输入电压（Vi）产生期望的输出电压（Vo），以将其提供给负载（LED）; 输出电流检测电路57，用于检测负载的输出电流Io（图1中的基准电流（Im））; 以及基于输出电流Io的检测结果来改变时钟信号c1和c2的频率的装置（图1中的频率转换电路52）。利用这种结构，无论负载的大小如何，都可以实现高的电力效率。

4. 发明授权

US07936137B2 Inverter 有权
标题翻译：逆变器
公开(公告)号：US07936137B2
公开(公告)日：2011-05-03
申请号：US12210079
申请日：2008-09-12
申请人： Yoshinori Imanaka , Kenichi Fukumoto
发明人： Yoshinori Imanaka , Kenichi Fukumoto
IPC分类号： H05B39/00 , H05B39/04
CPC分类号： H05B41/2806 , Y02B20/22
摘要： A soft start circuit generates a soft start voltage Vss which changes with time at a starting time of lighting an EEFL. A pulse width modulator generates a PWM signal Vpwm whose duty ratio is feedback-controlled so that a feedback voltage Vfb corresponding to an output voltage Vdrv of an inverter conforms to the soft start voltage Vss. A logical control unit performs switching control of a voltage of a primary coil of a transformer on the basis of the PWM signal Vpwm from the pulse width modulator. The soft start circuit executes at least one striking operation in which the soft start voltage Vss is raised with time, lowered when being reached to a first voltage level VH, and raised again when being lowered to a second voltage level VL lower than the first voltage level VH.
摘要翻译：软启动电路产生在点亮EEFL的开始时刻随时间而变化的软启动电压Vss。脉冲宽度调制器产生其负载比被反馈控制的PWM信号Vpwm，使得与反相器的输出电压Vdrv相对应的反馈电压Vfb符合软启动电压Vss。逻辑控制单元根据来自脉宽调制器的PWM信号Vpwm，对变压器的初级线圈的电压进行切换控制。软启动电路执行软启动电压Vss随时间升高的至少一个打击操作，当达到第一电压电平VH时降低，并且当降低到低于第一电压的第二电压电平VL时，再次升高级VH。

5. 发明授权

US07724551B2 Step-up circuit and portable device using it 有权
标题翻译：升压电路和使用它的便携式设备
公开(公告)号：US07724551B2
公开(公告)日：2010-05-25
申请号：US11667627
申请日：2005-10-19
申请人： Osamu Yanagida , Yoshinori Imanaka
发明人： Osamu Yanagida , Yoshinori Imanaka
IPC分类号： H02M3/18 , H02M7/00
CPC分类号： H02M3/073 , H02M2001/0045
摘要： According to the invention, as an input voltage of a certain step-up unit of a plurality of stages of step-up units, a stepped-up output of a step-up unit in a stage preceding the certain step-up unit is inputted. This makes it possible to increase the level of a voltage stepped up by each step-up unit, and reduce the number of units. Furthermore, according to the invention, when an output voltage of a step-up unit that performs stepping-up operation according to a reference constant current is lower than a reference voltage, a reference constant current is produced; when the output voltage thereof exceeds the reference voltage, the reference constant current is stopped. This makes it possible to provide stable output of an output voltage at a predetermined level, and reduce an inrush current during start-up to a predetermined current level.
摘要翻译：根据本发明，作为多级升压单元的某个升压单元的输入电压，输入在某个升压单元之前的级中的升压单元的升压输出。这使得可以增加每个升压单元升压的电平，并且减少单元数量。此外，根据本发明，当根据参考恒定电流进行升压操作的升压单元的输出电压低于参考电压时，产生参考恒定电流; 当其输出电压超过参考电压时，参考恒定电流停止。这使得可以将输出电压的稳定输出提供在预定电平，并且可以将启动期间的浪涌电流降低到预定电流水平。

6. 发明申请

US20090066265A1 INVERTER 有权
标题翻译：逆变器
公开(公告)号：US20090066265A1
公开(公告)日：2009-03-12
申请号：US12210079
申请日：2008-09-12
申请人： Yoshinori Imanaka , Kenichi Fukumoto
发明人： Yoshinori Imanaka , Kenichi Fukumoto
IPC分类号： H05B41/36 , H02M1/36
CPC分类号： H05B41/2806 , Y02B20/22
摘要： A soft start circuit generates a soft start voltage Vss which changes with time at a starting time of lighting an EEFL. A pulse width modulator generates a PWM signal Vpwm whose duty ratio is feedback-controlled so that a feedback voltage Vfb corresponding to an output voltage Vdrv of an inverter conforms to the soft start voltage Vss. A logical control unit performs switching control of a voltage of a primary coil of a transformer on the basis of the PWM signal Vpwm from the pulse width modulator. The soft start circuit executes at least one striking operation in which the soft start voltage Vss is raised with time, lowered when being reached to a first voltage level VH, and raised again when being lowered to a second voltage level VL lower than the first voltage level VH.
摘要翻译：软启动电路产生在点亮EEFL的开始时刻随时间而变化的软启动电压Vss。脉冲宽度调制器产生其负载比被反馈控制的PWM信号Vpwm，使得与反相器的输出电压Vdrv相对应的反馈电压Vfb符合软启动电压Vss。逻辑控制单元根据来自脉宽调制器的PWM信号Vpwm，对变压器的初级线圈的电压进行切换控制。软启动电路执行软启动电压Vss随时间升高的至少一个打击操作，当达到第一电压电平VH时降低，并且当降低到低于第一电压的第二电压电平VL时，再次升高级VH。

7. 发明授权

US08159151B2 Control circuit for inverter 有权
标题翻译：逆变器控制电路
公开(公告)号：US08159151B2
公开(公告)日：2012-04-17
申请号：US12668887
申请日：2008-07-04
申请人： Yoshinori Imanaka
发明人： Yoshinori Imanaka
IPC分类号： G05F1/00
CPC分类号： H05B41/2822 , H05B41/3921 , Y10S315/04
摘要： A reference voltage source generates a reference voltage for adjusting an electric current for a dimming operation. The first current source generates a first current. A first current mirror circuit includes multiple output terminals, duplicates the first current, and outputs multiple first duplicated currents via the multiple output terminals. Multiple first switches are provided on paths for the respective multiple first duplicated currents. A converting resistor, with one terminal set to a fixed electric potential, is provided on a path for the multiple first duplicated currents output from the first current mirror circuit. A decoder circuit receives a control signal from an external circuit, and controls the ON/OFF operations of the multiple first switches. The reference voltage source outputs, as the reference voltage, a voltage that corresponds to a voltage drop that occurs at a converting resistor.
摘要翻译：参考电压源产生用于调节用于调光操作的电流的参考电压。第一个电流源产生第一个电流。第一电流镜电路包括多个输出端，复制第一电流，并经由多个输出端输出多个第一复制电流。在相应的多个第一复制电流的路径上提供多个第一开关。在从第一电流镜电路输出的多个第一复制电流的路径上设置将一个端子设置为固定电位的转换电阻器。解码器电路从外部电路接收控制信号，并控制多个第一开关的ON / OFF操作。参考电压源作为参考电压输出对应于在转换电阻器处发生的电压降的电压。

8. 发明授权

US08742691B2 Load driving circuit 有权
标题翻译：负载驱动电路
公开(公告)号：US08742691B2
公开(公告)日：2014-06-03
申请号：US13169112
申请日：2011-06-27
申请人： Yoshinori Imanaka
发明人： Yoshinori Imanaka
IPC分类号： H05B37/02 , H02M1/00
CPC分类号： H05B41/2828 , H05B33/0815 , H05B33/0827 , H05B33/0851
摘要： A main transformer is arranged such that a load is connected to its secondary winding side. A first error amplifier generates a feedback signal that corresponds to the difference between a detection signal which indicates the electrical state of the load and a predetermined first reference voltage. A current generating resistor is arranged between a current generating transistor and a fixed voltage terminal. A second error amplifier is arranged such that the first input terminal receives the electric potential at a node that connects the current generating transistor and the current generating resistor, a predetermined second reference voltage is input to the second input terminal thereof, and the output terminal thereof is connected to the control terminal of the current generating transistor. An adjustment resistor is arranged between the output terminal of the first error amplifier and a node that connects the current generating transistor and the current generating resistor.
摘要翻译：主变压器被布置成使得负载连接到其次级绕组侧。第一误差放大器产生对应于指示负载的电状态的检测信号与预定的第一参考电压之间的差的反馈信号。电流产生电阻器布置在电流产生晶体管和固定电压端子之间。第二误差放大器被布置成使得第一输入端子在连接电流产生晶体管和电流产生电阻器的节点处接收电位，预定的第二参考电压被输入到其第二输入端子，并且其输出端子连接到电流产生晶体管的控制端子。在第一误差放大器的输出端子和连接电流产生晶体管和电流产生电阻器的节点之间布置调整电阻器。

9. 发明申请

US20100194310A1 CONTROL CIRCUIT FOR INVERTER 有权
标题翻译：逆变器控制电路
公开(公告)号：US20100194310A1
公开(公告)日：2010-08-05
申请号：US12668887
申请日：2008-07-04
申请人： Yoshinori Imanaka
发明人： Yoshinori Imanaka
IPC分类号： H05B37/02
CPC分类号： H05B41/2822 , H05B41/3921 , Y10S315/04
摘要： A reference voltage source generates a reference voltage for adjusting an electric current for a dimming operation. The first current source generates a first current. A first current mirror circuit includes multiple output terminals, duplicates the first current, and outputs multiple first duplicated currents via the multiple output terminals. Multiple first switches are provided on paths for the respective multiple first duplicated currents. A converting resistor, with one terminal set to a fixed electric potential, is provided on a path for the multiple first duplicated currents output from the first current mirror circuit. A decoder circuit receives a control signal from an external circuit, and controls the ON/OFF operations of the multiple first switches. The reference voltage source outputs, as the reference voltage, a voltage that corresponds to a voltage drop that occurs at a converting resistor.
摘要翻译：参考电压源产生用于调节用于调光操作的电流的参考电压。第一个电流源产生第一个电流。第一电流镜电路包括多个输出端，复制第一电流，并经由多个输出端输出多个第一复制电流。在相应的多个第一复制电流的路径上提供多个第一开关。在从第一电流镜电路输出的多个第一复制电流的路径上设置将一个端子设置为固定电位的转换电阻器。解码器电路从外部电路接收控制信号，并控制多个第一开关的ON / OFF操作。参考电压源作为参考电压输出对应于在转换电阻器处发生的电压降的电压。

10. 发明申请

US20090160367A1 POWER SUPPLY, LIGHT EMISSION CONTROL DEVICE AND DISPLAY DEVICE 有权
标题翻译：电源，光发射控制装置和显示装置
公开(公告)号：US20090160367A1
公开(公告)日：2009-06-25
申请号：US12093641
申请日：2007-02-06
申请人： Yoshinori Imanaka
发明人： Yoshinori Imanaka
IPC分类号： H03K3/01 , H05B37/02
CPC分类号： H02M3/07 , H02M3/073 , H02M2003/075
摘要： The power supply of the present invention is composed of: a charge pump circuit (54) that periodically turns on and off a plurality of charge-transfer switches (Q1 to Q4) according to clock signals (c1 and c2), thereby charges and discharges a charge storage capacitor (C1) and thus produces the desired output voltage (Vo) from an input voltage (Vi) to supply it to a load (LED); an output current detection circuit 57 for detecting an output current Io (a reference current (Im) thereof in FIG. 1) to the load; and means (a frequency conversion circuit 52 in FIG. 1) that varies the frequency of the clock signals c1 and c2 based on the result of the detection of the output current Io. With this configuration, it is possible to achieve high electric power efficiency irrespective of the magnitude of a load.
摘要翻译：本发明的电源包括：根据时钟信号（c1和c2）周期性地接通和断开多个电荷转移开关（Q1至Q4）的电荷泵电路（54），由此充电和放电电荷存储电容器（C1），从而从输入电压（Vi）产生期望的输出电压（Vo），以将其提供给负载（LED）; 输出电流检测电路57，用于检测负载的输出电流Io（图1中的基准电流（Im））; 以及基于输出电流Io的检测结果来改变时钟信号c1和c2的频率的装置（图1中的频率转换电路52）。利用这种结构，无论负载的大小如何，都可以实现高的电力效率。

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