公开(公告)号：US20080018387A1

公开(公告)日：2008-01-24

申请号：US11843896

申请日：2007-08-23

申请人： Takashi Ryu ,  Takuya Ishii ,  Mikio Motomori ,  Hirohisa Tanabe ,  Tomoya Shigemi

发明人： Takashi Ryu ,  Takuya Ishii ,  Mikio Motomori ,  Hirohisa Tanabe ,  Tomoya Shigemi

IPC分类号： G05F1/10

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： A current detection circuit of the present invention has a switching device 1; an auxiliary switching device 2; an offset voltage source comprising an offset resistor device 7 and a current source circuit 8; a compensation circuit, comprising a differential amplifier 4 and a compensation transistor 5, for adjusting the output current of the auxiliary switching device 2 so that the potential obtained by subtracting the voltage drop across the offset resistor device 7 from the output potential of the switching device 1 is equal to the output potential of the auxiliary switching device 2, being configured that the detection level of the current flowing in the switching device 1 is shifted by an offset amount.

摘要翻译： 本发明的电流检测电路具有开关元件1， 辅助切换装置2; 偏移电压源，包括偏移电阻器件7和电流源电路8; 补偿电路，包括差分放大器4和补偿晶体管5，用于调整辅助开关器件2的输出电流，使得通过从开关器件的输出电位减去偏移电阻器件7上的电压降而获得的电位 1等于辅助开关装置2的输出电位，被配置为使在开关装置1中流动的电流的检测电平偏移了偏移量。

公开(公告)号：US20070273430A1

公开(公告)日：2007-11-29

申请号：US11753671

申请日：2007-05-25

申请人： Hiroki Akashi ,  Takuya Ishii ,  Yoshiyuki Konishi ,  Makoto Ishimaru

发明人： Hiroki Akashi ,  Takuya Ishii ,  Yoshiyuki Konishi ,  Makoto Ishimaru

IPC分类号： G05F1/10

CPC分类号： H02M3/07

摘要： For downsizing a charge pump circuit which selects a voltage multiple ratio, converts its input voltage and outputs the converted voltage, the number of switching devices of the charge pump circuit is reduced. The control circuit of the charge pump circuit is configured to carry out switching control for multiple switching devices and charge/discharge at least a first capacitor and a second capacitor so as to have at least a 2Vi mode for alternately repeating a first state and a second state, and a 1.5Vi mode for alternately repeating a third state and a fourth state, thereby carrying out boosting depending on the detected input voltage.

摘要翻译： 为了减小选择电压倍数的电荷泵电路，转换其输入电压并输出转换的电压，减少了电荷泵电路的开关器件的数量。 电荷泵电路的控制电路被配置为对多个开关器件执行开关控制，并且至少对第一电容器和第二电容器进行充电/放电，以具有至少2Vi模式，用于交替地重复第一状态和第二状态 状态和用于交替重复第三状态和第四状态的1.5Vi模式，从而根据检测到的输入电压进行升压。

公开(公告)号：US07282900B2

公开(公告)日：2007-10-16

申请号：US11206977

申请日：2005-08-19

申请人： Richard K. Oswald ,  Tamotsu Yamamoto ,  Takashi Ryu ,  Mikio Motomori ,  Takuya Ishii

发明人： Richard K. Oswald ,  Tamotsu Yamamoto ,  Takashi Ryu ,  Mikio Motomori ,  Takuya Ishii

IPC分类号： G05F1/40

CPC分类号： H02M3/1588 ,  Y02B70/1466

摘要： A method of regulating an output voltage by utilizing a switching regulator, where the switching regulator includes a high side switch, a low side switch having an active diode, a controller coupled to the high side switch and the low side switch, and a current measuring circuit coupled to the high side switch. The method includes the steps of: measuring the output voltage and if the output voltage is below a desired level, activating the high side switch so as to provide current to a load capacitor via a load inductor, if the voltage is above the desired level, activating the low side switch so as to sink current from the load capacitor via the load inductor; and utilizing the current measuring circuit to measure the current flowing through the high side switch in either a positive direction or a negative direction, where the controller is operable for controlling the current measuring circuit and disabling active components contained in the current measuring circuit and the active diode when the active components are not utilized during operation of the switching regulator so as to reduce operational power requirements of the switching regulator.

摘要翻译： 一种通过利用开关调节器调节输出电压的方法，其中开关调节器包括高侧开关，具有有源二极管的低侧开关，耦合到高侧开关和低侧开关的控制器以及电流测量 电路耦合到高侧开关。 该方法包括以下步骤：测量输出电压，并且如果输出电压低于期望电平，则激活高侧开关以便通过负载电感器向负载电容器提供电流，如果电压高于所需电平， 激活低侧开关，以便经由负载电感器从负载电容器吸收电流; 并利用电流测量电路来测量在正方向或负方向上流过高侧开关的电流，其中控制器可操作用于控制电流测量电路并禁用包含在电流测量电路中的有源元件和有源 当在开关调节器的操作期间不使用有源组件以减少开关调节器的操作功率需求时，二极管。

公开(公告)号：US07250746B2

公开(公告)日：2007-07-31

申请号：US11092814

申请日：2005-03-30

申请人： Richard K. Oswald ,  Tamotsu Yamamoto ,  Hiroshi Saito ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Takeshi Tanaka

发明人： Richard K. Oswald ,  Tamotsu Yamamoto ,  Hiroshi Saito ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Takeshi Tanaka

IPC分类号： G05F1/618 ,  G05F1/575

CPC分类号： H02M3/156

摘要： A power supply switching regulator including a common terminal; an input terminal for supplying a direct current input; an output terminal; a recirculating diode having a first terminal connected to the common terminal; an inductor having a first terminal connected to a second terminal of the recirculation diode and a second terminal connected to the output terminal; a capacitor having a first terminal connected to the output terminal and a second terminal connected to the common terminal; a switch connected between the input terminal and the first terminal of the inductor, the switch operable for switching between an ON state in which the direct current input is coupled to the inductor, and an OFF state in which the direct current input is isolated from the inductor; and a controller coupled to the switch and operable for controlling the amount of time the switch is in the ON state and the OFF state such that the duration of time the switch is in the ON state is inversely proportional to the difference between the voltage at the input terminal and the voltage at the output terminal.

摘要翻译： 一种电源开关调节器，包括公共端子; 用于提供直流输入的输入端; 输出端子; 循环二极管，其具有连接到所述公共端子的第一端子; 电感器，其具有连接到所述再循环二极管的第二端子的第一端子和连接到所述输出端子的第二端子; 电容器，其具有连接到所述输出端子的第一端子和连接到所述公共端子的第二端子; 连接在电感器的输入端子和第一端子之间的开关，所述开关可操作用于在其中直流输入耦合到电感器的导通状态和直流输入与电感器隔离的截止状态之间切换 电感; 以及控制器，其耦合到所述开关并且可操作用于控制所述开关处于导通状态和断开状态的时间量，使得所述开关处于导通状态的持续时间与所述开关处于所述开关状态的电压之间的差成反比 输入端子和输出端子的电压。

公开(公告)号：US20070085566A1

公开(公告)日：2007-04-19

申请号：US11495774

申请日：2006-07-31

申请人： Masaaki Koto ,  Kazuhito Kimura ,  Takuya Ishii ,  Kazuyuki Moritake

发明人： Masaaki Koto ,  Kazuhito Kimura ,  Takuya Ishii ,  Kazuyuki Moritake

IPC分类号： H03K19/0175

CPC分类号： H03K3/356104

摘要： A level shift circuit has a driving circuit and an output circuit. The driving circuit has a clamp circuit for receiving first and second bias potentials, outputting first and second drive signals which are not less than a reference potential, less than the first bias potential, and complementary to each other, and also outputting third and fourth drive signals which are higher than the second bias potential, not more than a power source potential, and complementary to each other. The output circuit has a first output transistor of a first conductivity type and a second output transistor of a second conductivity type which are connected in series to each other. The first output transistor has a gate for receiving the first drive signal and one electrode for receiving the reference potential. The second output transistor has a gate for receiving the third drive signal and one electrode for receiving the power source potential.

摘要翻译： 电平移位电路具有驱动电路和输出电路。 驱动电路具有用于接收第一和第二偏置电位的钳位电路，输出小于第一偏置电位并且彼此互补的不小于参考电位的第一和第二驱动信号，并且还输出第三和第四驱动 高于第二偏置电位的信号，不大于电源电位，彼此互补。 输出电路具有彼此串联连接的第一导电类型的第一输出晶体管和第二导电类型的第二输出晶体管。 第一输出晶体管具有用于接收第一驱动信号的栅极和用于接收参考电位的一个电极。 第二输出晶体管具有用于接收第三驱动信号的栅极和用于接收电源电位的一个电极。

公开(公告)号：US20070063685A1

公开(公告)日：2007-03-22

申请号：US11523699

申请日：2006-09-20

申请人： Takuya Ishii ,  Takashi Ryu ,  Hirohisa Tanabe ,  Masaaki Koto

发明人： Takuya Ishii ,  Takashi Ryu ,  Hirohisa Tanabe ,  Masaaki Koto

IPC分类号： G05F1/00

CPC分类号： H02M3/156

摘要： A DC-DC converter for converting an input DC voltage to an output DC voltage has a switch element which is turned ON/OFF by a drive signal, a reference voltage source for outputting a first reference voltage when the switch element is ON or outputting a second reference voltage when the switch element is OFF, a capacitive element having one terminal connected to the reference voltage source, a charge/discharge circuit for discharging the capacitive element when the switch element is ON and charging the capacitive element when the switch element is OFF, a switch circuit for short-circuiting the capacitive element when the switch element is turned ON and OFF, and a comparison circuit for comparing the output DC voltage or a voltage at which the output DC voltage is detected with a voltage at the other terminal of the capacitive element and generating the drive signal.

公开(公告)号：US20060280392A1

公开(公告)日：2006-12-14

申请号：US11436624

申请日：2006-05-19

申请人： Katsuhisa Ishii ,  Toshihiko Aoki ,  Takuya Ishii ,  Minoru Todo ,  Kazutoshi Nozaki ,  Atsushi Honda ,  Masafumi Kinoshita ,  Hirofumi Ota

发明人： Katsuhisa Ishii ,  Toshihiko Aoki ,  Takuya Ishii ,  Minoru Todo ,  Kazutoshi Nozaki ,  Atsushi Honda ,  Masafumi Kinoshita ,  Hirofumi Ota

IPC分类号： F16C33/10

CPC分类号： F16C33/1065 ,  F16C17/102

摘要： A lubrication groove is formed on a sliding face of a bushing, both ends of which open to the same end face of the bushing. The lubrication groove has inclined portions that extend from the openings in directions that approach each other, and a parallel portion that is in communication with the ends of the inclined portions via curved portions. Oil is guided to the lubrication groove so as to form an oil film on the sliding face. Sealability is achieved because the lubrication groove only opens to one end face of the bushing.

摘要翻译： 润滑槽形成在衬套的滑动面上，其两端开口于衬套的相同端面。 润滑槽具有从彼此接近的方向上的开口延伸的倾斜部分，以及经由弯曲部分与倾斜部分的端部连通的平行部分。 油被引导到润滑槽，以在滑动面上形成油膜。 实现了密封性，因为润滑槽仅通向套管的一个端面。

公开(公告)号：US07119521B2

公开(公告)日：2006-10-10

申请号：US10811675

申请日：2004-03-29

申请人： Takuya Ishii ,  Hiroshi Saito ,  Kazuhiko Nagaoka

发明人： Takuya Ishii ,  Hiroshi Saito ,  Kazuhiko Nagaoka

IPC分类号： G05F1/10 ,  H02M7/00 ,  H02H3/18

CPC分类号： H02M3/33561

摘要： A multi-output DC-DC converter comprising a plurality of converters configured so that an inductor 2 and a main switch 31 are used in common, wherein a first output voltage Vo1 is output from a circuit comprising a diode 41 and a first output capacitor 51, and a second output voltage Vo2 is output from a circuit comprising an auxiliary switch 32, a diode 42 and a second output capacitor 52. The control circuit 80 of the multi-output DC-DC converter has an output detection circuit 81, an oscillation circuit 82, a PWM circuit 83, a frequency divider circuit 84 and a drive circuit 85, and controls a plurality of outputs at high efficiency and reliability.

摘要翻译： 一种多输出DC-DC转换器，包括多个转换器，其被配置为使得电感器2和主开关31共同使用，其中第一输出电压Vo 1从包括二极管41和第一输出电容器 51，并且从包括辅助开关32，二极管42和第二输出电容器52的电路输出第二输出电压Vo 2。 多输出DC-DC转换器的控制电路80具有输出检测电路81，振荡电路82，PWM电路83，分频器电路84和驱动电路85，并以高效率控制多个输出 和可靠性。

公开(公告)号：US06882130B2

公开(公告)日：2005-04-19

申请号：US10451508

申请日：2002-04-17

申请人： Hiroyuki Handa ,  Takuya Ishii ,  Yasufumi Nakajima ,  Yasuhiko Bito ,  Shinji Kasamatsu ,  Yoshiaki Nitta

发明人： Hiroyuki Handa ,  Takuya Ishii ,  Yasufumi Nakajima ,  Yasuhiko Bito ,  Shinji Kasamatsu ,  Yoshiaki Nitta

IPC分类号： H02J7/00 ,  H02M3/155 ,  H02M3/158 ,  H01M10/46

CPC分类号： H02J7/0065 ,  H02M3/155 ,  H02M3/1582

摘要： The present invention provides a battery-driven electronic device for which a long time use of the battery can be achieved and mobile communications equipment such as a portable telephone. Even if the time at which the output voltage of a battery 201 becomes below the supply voltage required by a load 206 including a power amplifier for wireless communications comes earlier than a conventional lithium ion battery because of its discharge characteristics that the battery voltage change ratio is 0.25 or more, a step-up and -down converter 200 operates as follows. When the output voltage of the battery is higher than the supply voltage required by the load, the voltage is set to a predetermined supply voltage by the step-down operation mode. When the output voltage of the battery is decreased and becomes lower than the supply voltage required by the load, the voltage is set to a predetermined supply voltage by the step-up operation mode. Thus, even for a battery employing a new material having a high energy density, a long term use of the battery can be achieved.

摘要翻译： 本发明提供了一种电池驱动的电子设备，其可以实现电池的长时间使用和诸如便携式电话的移动通信设备。 即使电池201的输出电压低于包括无线通信功率放大器的负载206所需的电源电压的时间比常规的锂离子电池要早，因为其放电特性使电池电压变化率为 升压和降压转换器200如下操作。 当电池的输出电压高于负载所需的电源电压时，通过降压操作模式将电压设定为预定的电源电压。 当电池的输出电压降低并且变得低于负载所需的电源电压时，通过升压操作模式将电压设置为预定的电源电压。 因此，即使对于采用具有高能量密度的新材料的电池，也可以长期使用电池。

公开(公告)号：US5644479A

公开(公告)日：1997-07-01

申请号：US325928

申请日：1994-10-18

申请人： Koji Yoshida ,  Takuya Ishii

发明人： Koji Yoshida ,  Takuya Ishii

IPC分类号： H02M3/28 ,  H02M1/00 ,  H02M3/335

CPC分类号： H02M3/33569

摘要： A switching power supply device which includes a series circuit constituted by a first switching element which is connected to an input voltage and which is at least repeatedly turned on and off and a second switching element which is repeatedly turned on and off alternating with the first switching element. A first capacitor is connected to one end of the second switching element. A transformer having a primary winding is connected to the second switching element and the first capacitor. A series circuit constituted by a second capacitor and a rectifier diode is connected across the secondary winding of the transformer, and a series circuit constituted by an inductance element and a smoothing capacitor is connected across the rectifier diode. A control circuit controls the turning on and off of the first and second switching elements based on the voltage across the smoothing capacitor. The voltage across the smoothing capacitor is supplied as the output.

摘要翻译： 一种开关电源装置，包括由连接到输入电压并且至少重复接通和断开的第一开关元件和与第一开关交替重复接通和断开的第二开关元件构成的串联电路 元件。 第一电容器连接到第二开关元件的一端。 具有初级绕组的变压器连接到第二开关元件和第一电容器。 由变压器的次级绕组连接由第二电容器和整流二极管构成的串联电路，并且由整流二极管连接由电感元件和平滑电容器构成的串联电路。 控制电路基于平滑电容器两端的电压来控制第一和第二开关元件的接通和断开。 平滑电容器两端的电压作为输出提供。