公开(公告)号：US08971076B2

公开(公告)日：2015-03-03

申请号：US13366623

申请日：2012-02-06

申请人： Satoru Nate ,  Yoshinori Sato

发明人： Satoru Nate ,  Yoshinori Sato

IPC分类号： H02M1/42

CPC分类号： H02M1/4225 ,  Y02B70/126

摘要： A first error amplification circuit amplifies a difference between a predetermined reference voltage and a first detection voltage that corresponds to the output voltage of a DC/DC converter, so as to generate a second voltage. A voltage level judgment circuit generates a third voltage having a discrete level that corresponds to the amplitude of a first voltage. A multiplying/dividing circuit multiplies the first voltage by the second voltage, and divides the resulting product by the third voltage, so as to generate a fourth voltage. A comparator compares the fourth voltage with a second detection voltage that corresponds to a current that flows through a switching transistor included in the DC/DC comparator. A driving circuit turns on the switching transistor for each predetermined period, and turns off the switching transistor according to the output of the comparator every time the second detection voltage becomes higher than the fourth voltage.

摘要翻译： 第一误差放大电路放大对应于DC / DC转换器的输出电压的预定参考电压和第一检测电压之间的差，以产生第二电压。 电压电平判断电路产生具有对应于第一电压的振幅的离散电平的第三电压。 乘法/除法电路将第一电压乘以第二电压，并将所得乘积除以第三电压，以产生第四电压。 比较器将第四电压与对应于流经包括在DC / DC比较器中的开关晶体管的电流相对应的第二检测电压进行比较。 驱动电路在每个预定周期中导通开关晶体管，并且每当第二检测电压变得高于第四电压时，根据比较器的输出关断开关晶体管。

公开(公告)号：US08724346B2

公开(公告)日：2014-05-13

申请号：US13325123

申请日：2011-12-14

申请人： Satoru Nate

发明人： Satoru Nate

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

摘要： A DC/DC converter includes a transformer including primary and secondary coils and an auxiliary coil disposed in a primary coil side; a first output capacitor including a first end having a fixed electric potential and a second end; a first diode disposed in a direction where a cathode of the first diode faces the first output capacitor, between the second end of the first output capacitor and one end of the secondary coil; a switching transistor disposed on a path of the primary coil; a second output capacitor including a first end having a fixed electric potential and a second end; a second diode and a switch disposed between the second end of the second output capacitor and the first port of the auxiliary coil; and a control circuit receiving voltage generated in the second output capacitor through a power supply port and controlling turn-on/off of the switching transistor.

摘要翻译： 一个DC / DC转换器包括一个包括初级和次级线圈的变压器和一个设置在初级线圈侧的辅助线圈; 包括具有固定电位的第一端和第二端的第一输出电容器; 第一二极管，其设置在第一二极管的阴极面向第一输出电容器的方向上，第一输出电容器的第二端与次级线圈的一端之间; 设置在所述初级线圈的路径上的开关晶体管; 第二输出电容器，包括具有固定电位的第一端和第二端; 设置在第二输出电容器的第二端和辅助线圈的第一端口之间的第二二极管和开关; 以及控制电路，通过电源端口接收在第二输出电容器中产生的电压并控制开关晶体管的导通/截止。

公开(公告)号：US07898217B2

公开(公告)日：2011-03-01

申请号：US11801323

申请日：2007-05-09

申请人： Satoru Nate ,  Isao Yamamoto

发明人： Satoru Nate ,  Isao Yamamoto

IPC分类号： H02J7/00

CPC分类号： H02J7/0052 ,  H02J7/0068

摘要： In a charge control circuit that adjusts a charging current flowing through a battery to be charged from a power supply, a sense resistor is provided on a charging path to the battery from an external power supply. A charging current adjustment circuit adjusts the charging current based on an error voltage between a voltage drop across the sense resistor and a predetermined reference voltage. The charging control circuit is integrated in a package. The charging current is inputted to a current input terminal. A battery terminal outputs the charging current to the battery. The current input terminal and the battery terminal also function as terminals used to measure a resistance value of the sense resistor. A voltage monitoring terminal is provided to measure the reference voltage in an inspection process.

摘要翻译： 在从电源调整流过待充电电池的充电电流的充电控制电路中，从外部电源向充电路径提供感测电阻。 充电电流调节电路基于检测电阻器两端的电压降与预定参考电压之间的误差电压来调节充电电流。 充电控制电路集成在一个封装中。 充电电流被输入到电流输入端。 电池端子输出到电池的充电电流。 电流输入端子和电池端子也用作测量检测电阻的电阻值的端子。 提供电压监视端子以在检查过程中测量参考电压。

公开(公告)号：US08717781B2

公开(公告)日：2014-05-06

申请号：US13360844

申请日：2012-01-30

申请人： Satoru Nate

发明人： Satoru Nate

IPC分类号： H02M3/335 ,  H02H7/122

CPC分类号： H02M3/33553 ,  H02M1/36

摘要： A direct current (DC)/DC converter capable of lowering power consumption and capable of being started in a short time is provided. A voltage generated at a second output capacitor is input to a power supply terminal. An input voltage is input to a high voltage terminal. A charging transistor is a N-channel Metal Oxide Semiconductor Field Effect Transistor disposed between the high voltage terminal and the power supply terminal and applied with a bias so that the charging transistor is normally on. In a first state, in which the voltage of the power supply terminal is lower than a specified first threshold voltage, a current limiting circuit limits a charging current flowing from the high voltage terminal to the power supply terminal, and in a second state in which the voltage is higher than a second threshold voltage, the current limiting circuit lowers the charging current substantially to zero.

摘要翻译： 提供能够在短时间内降低功耗并能够启动的直流（DC）/ DC转换器。 在第二输出电容器产生的电压被输入到电源端子。 输入电压输入到高电压端子。 充电晶体管是N沟道金属氧化物半导体场效应晶体管，其设置在高电压端子和电源端子之间，施加偏置，使得充电晶体管正常导通。 在电源端子的电压低于规定的第一阈值电压的第一状态下，限流电路限制从高压端子流向电源端子的充电电流，在第二状态下， 电压高于第二阈值电压，限流电路将充电电流基本上降至零。

公开(公告)号：US09252669B2

公开(公告)日：2016-02-02

申请号：US13555384

申请日：2012-07-23

申请人： Satoru Nate ,  Hiroshi Hayashi

发明人： Satoru Nate ,  Hiroshi Hayashi

IPC分类号： H02M3/335 ,  H02M1/32

CPC分类号： H02M3/335 ,  H02M2001/322

摘要： The present invention provides an Alternating Current/Direct Current (AC/DC) converter employing measures not only against residual voltage but also to reduce power consumption. The AC/DC converter receives an Alternating Current (AC) voltage through a concentric plug and converts the AC voltage into a Direct Current (DC) voltage. A discharge path is disposed on a path from a discharge terminal to a ground terminal. A detection circuit compares a wave detection voltage with a predetermined threshold voltage, and enables the discharge path to be turned on when the wave detection voltage is continuously lower than the threshold voltage for a predetermined detection time.

摘要翻译： 本发明提供一种交流/直流（AC / DC）转换器，其采用不仅抵抗残余电压而且还降低功耗的措施。 AC / DC转换器通过同心插头接收交流电压，并将交流电压转换为直流（DC）电压。 放电路径设置在从放电端子到接地端子的路径上。 检测电路将波检测电压与预定阈值电压进行比较，并且当波检测电压在预定检测时间内连续低于阈值电压时，能够使放电路径导通。

公开(公告)号：US07894717B2

公开(公告)日：2011-02-22

申请号：US12096803

申请日：2006-12-06

申请人： Yoichi Tamegai ,  Satoru Nate ,  Isao Yamamoto

发明人： Yoichi Tamegai ,  Satoru Nate ,  Isao Yamamoto

IPC分类号： G03B7/26

CPC分类号： G03B15/05 ,  G03B2215/05 ,  H02M3/156

摘要： A switching transistor is connected to the primary coil of a transformer. A first resistor is provided such that one end thereof is connected to the switching transistor, and the other end thereof is grounded. A first voltage comparator compares a first detection voltage with a first threshold voltage. A second voltage comparator compares a second detection voltage with a second threshold voltage. A switching control unit controls the ON/OFF state of the switching transistor according to the output signals of the first voltage comparator and the second voltage comparator. A first electrode pad through a fourth electrode pad are provided to the respective nodes of the switching transistor and the first resistor.

摘要翻译： 开关晶体管连接到变压器的初级线圈。 提供第一电阻器，使得其一端连接到开关晶体管，并且其另一端接地。 第一电压比较器将第一检测电压与第一阈值电压进行比较。 第二电压比较器将第二检测电压与第二阈值电压进行比较。 开关控制单元根据第一电压比较器和第二电压比较器的输出信号来控制开关晶体管的导通/截止状态。 通过第四电极焊盘的第一电极焊盘设置到开关晶体管和第一电阻器的各个节点。

公开(公告)号：US20120262950A1

公开(公告)日：2012-10-18

申请号：US13511778

申请日：2010-11-25

申请人： Satoru Nate ,  Tadayuki Sakamoto ,  Hiroshi Hayashi

发明人： Satoru Nate ,  Tadayuki Sakamoto ,  Hiroshi Hayashi

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H01M10/46 ,  H02J7/04 ,  H02J9/005 ,  H02J2009/007 ,  H02M1/36 ,  H02M2001/0032 ,  Y02B70/16

摘要： A power supply adapter receives an AC voltage, converts the AC voltage into a DC voltage, and supplies the DC voltage to an electronic device. A DC/DC converter converts the voltage smoothed by a smoothing capacitor into the DC voltage. A device-side connector is connected to the DC/DC converter via a cable, and is configured to be detachably connected to the electronic device. The device-side connector includes a detection unit detecting whether or not the electronic device is connected, and generates a connection detection signal indicating whether or not the electronic device is connected. A control circuit of the DC/DC converter is connected to the detection unit of the device-side connector via the cable, and is set to an operating state when the connection detection signal indicates that the electronic device is connected, and is set to a non-operating state when the connection detection signal indicates that the electronic device is not connected.

摘要翻译： 电源适配器接收AC电压，将AC电压转换为DC电压，并将DC电压提供给电子设备。 DC / DC转换器将平滑电容器平滑的电压转换成直流电压。 设备侧连接器通过电缆连接到DC / DC转换器，并且被配置为可拆卸地连接到电子设备。 设备侧连接器包括检测电子设备是否连接的检测单元，并且生成指示电子设备是否连接的连接检测信号。 DC / DC转换器的控制电路通过电缆连接到设备侧连接器的检测单元，并且当连接检测信号指示电子设备连接时被设置为操作状态，并且被设置为 当连接检测信号指示电子设备未连接时的非操作状态。

公开(公告)号：US08134106B2

公开(公告)日：2012-03-13

申请号：US12088172

申请日：2006-09-14

申请人： Yoichi Tamegai ,  Satoru Nate ,  Isao Yamamoto

发明人： Yoichi Tamegai ,  Satoru Nate ,  Isao Yamamoto

IPC分类号： G01J1/32 ,  H01J40/14 ,  H03K17/78 ,  H04B10/00 ,  H04N3/14

CPC分类号： G01J1/46 ,  G01R19/0092 ,  H01L31/14 ,  H04N5/2351 ,  H04N5/2354

摘要： A first transistor may be provided on a current path of a photo transistor. The bias current path may include a bias switch and a first bias resistor connected in series and is provided in parallel with a main current path including the phototransistor. A second transistor may configure a current mirror circuit with the first transistor, and generates second current formed by multiplying the first current flowing in the first transistor by a predetermined factor. The second current is charged in the charging capacitor and converted into a voltage. The bias current path turns on prior to the start of light reception of the phototransistor and turns off after a predetermined period has elapsed from the start of light reception of the phototransistor.

摘要翻译： 第一晶体管可以设置在光电晶体管的电流路径上。 偏置电流路径可以包括串联连接的偏置开关和第一偏置电阻器，并且与包括光电晶体管的主电流路径平行地设置。 第二晶体管可以配置与第一晶体管的电流镜像电路，并且产生通过将在第一晶体管中流动的第一电流乘以预定因子而形成的第二电流。 第二电流在充电电容器中充电并转换成电压。 在光电晶体管的光接收开始之前，偏置电流路径导通，并且在从光电晶体管的光接收开始经过预定时间之后关断偏置电流。

公开(公告)号：US20090242734A1

公开(公告)日：2009-10-01

申请号：US12088172

申请日：2006-09-14

申请人： Yoichi Tamegai ,  Satoru Nate ,  Isao Yamamoto

发明人： Yoichi Tamegai ,  Satoru Nate ,  Isao Yamamoto

IPC分类号： G01J1/44

CPC分类号： G01J1/46 ,  G01R19/0092 ,  H01L31/14 ,  H04N5/2351 ,  H04N5/2354

摘要： A first transistor may be provided on a current path of a photo transistor. The bias current path may include a bias switch and a first bias resistor connected in series and is provided in parallel with a main current path including the phototransistor. A second transistor may configure a current mirror circuit with the first transistor, and generates second current formed by multiplying the first current flowing in the first transistor by a predetermined factor. The second current is charged in the charging capacitor and converted into a voltage. The bias current path turns on prior to the start of light reception of the phototransistor and turns off after a predetermined period has elapsed from the start of light reception of the phototransistor.

摘要翻译： 第一晶体管可以设置在光电晶体管的电流路径上。 偏置电流路径可以包括串联连接的偏置开关和第一偏置电阻器，并且与包括光电晶体管的主电流路径平行地设置。 第二晶体管可以配置与第一晶体管的电流镜像电路，并且产生通过将在第一晶体管中流动的第一电流乘以预定因子而形成的第二电流。 第二电流在充电电容器中充电并转换成电压。 在光电晶体管的光接收开始之前，偏置电流路径导通，并且在从光电晶体管的光接收开始经过预定时间之后关断偏置电流。

公开(公告)号：US20090129768A1

公开(公告)日：2009-05-21

申请号：US12096803

申请日：2006-12-06

申请人： Yoichi Tamegai ,  Satoru Nate ,  Isao Yamamoto

发明人： Yoichi Tamegai ,  Satoru Nate ,  Isao Yamamoto

IPC分类号： G03B7/26 ,  G05F1/46 ,  H05B37/02

CPC分类号： G03B15/05 ,  G03B2215/05 ,  H02M3/156

摘要： A switching transistor is connected to the primary coil of a transformer. A first resistor is provided such that one end thereof is connected to the switching transistor, and the other end thereof is grounded. A first voltage comparator compares a first detection voltage with a first threshold voltage. A second voltage comparator compares a second detection voltage with a second threshold voltage. A switching control unit controls the ON/OFF state of the switching transistor according to the output signals of the first voltage comparator and the second voltage comparator. A first electrode pad through a fourth electrode pad are provided to the respective nodes of the switching transistor and the first resistor.

摘要翻译： 开关晶体管连接到变压器的初级线圈。 提供第一电阻器，使得其一端连接到开关晶体管，并且其另一端接地。 第一电压比较器将第一检测电压与第一阈值电压进行比较。 第二电压比较器将第二检测电压与第二阈值电压进行比较。 开关控制单元根据第一电压比较器和第二电压比较器的输出信号来控制开关晶体管的导通/截止状态。 通过第四电极焊盘的第一电极焊盘设置到开关晶体管和第一电阻器的各个节点。