公开(公告)号：US08390222B2

公开(公告)日：2013-03-05

申请号：US12720830

申请日：2010-03-10

Applicant: Kunio Seki ,  Kazutaka Inoue ,  Hiroyuki Kikuta ,  Yuichi Ohkubo

Inventor： Kunio Seki ,  Kazutaka Inoue ,  Hiroyuki Kikuta ,  Yuichi Ohkubo

IPC: H02P6/00 ,  H02P6/14

CPC classification number: H02P6/085 ,  H02M1/32 ,  H02M7/5387 ,  H02P6/34 ,  H02P29/0241

Abstract: The present disclosure provides a brushless motor driving circuit capable of clamping an output voltage at a proper voltage, even when a power source voltage changes. Namely, a pre-driver circuit generates a voltage for driving a brushless motor from a source voltage by turning on/off first and second PMOS transistors and first and second NMOS transistors in an H bridge circuit of a drive voltage generating circuit, and applies the voltage to a coil of the brushless motor. A first clamp circuit turns on/off the first NMOS transistor on the ground side so that the output voltage at a first output terminal becomes equal to or lower than the source voltage. A second clamp circuit turns on/off the second NMOS transistor on the ground side so that output voltage at a second output terminal becomes equal to or lower than the source voltage.

Abstract translation: 本发明提供一种能够将输出电压钳位在适当电压下的无刷电动机驱动电路，即使电源电压变化。 也就是说，预驱动器电路通过在驱动电压产生电路的H桥电路中接通/关闭第一和第二PMOS晶体管以及第一和第二NMOS晶体管，从源极电压产生用于驱动无刷电动机的电压， 电压到无刷电机的线圈。 第一钳位电路接地/关断接地侧的第一NMOS晶体管，使得第一输出端子处的输出电压变得等于或低于源极电压。 第二钳位电路在接地侧接通/关断第二NMOS晶体管，使得第二输出端子处的输出电压变得等于或低于源极电压。

公开(公告)号：US20100237813A1

公开(公告)日：2010-09-23

申请号：US12719525

申请日：2010-03-08

Applicant: Kunio Seki ,  Kazutaka Inoue ,  Hiroyuki Kikuta ,  Yuichi Ohkubo

Inventor： Kunio Seki ,  Kazutaka Inoue ,  Hiroyuki Kikuta ,  Yuichi Ohkubo

IPC: H02P6/14

CPC classification number: H02P6/085 ,  H02P6/26

Abstract: A brushless motor driving apparatus that includes a rotation signal output component, a half-cycle signal generating component, a plurality of counters, and a duty control signal generating component is provided. The plurality of counters, each of which uses a different bit number to count, repeatedly resets a count value and restarts a count operation for every bit number, resets a count value together with rising or falling of a half-cycle signal, and outputs a pulse signal which is inverted for every reset that occurs while the count operation is being performed. The duty control signal generating component generates a duty control signal to determine a duty ratio of a control signal to control driving of a single-phase brushless motor, based on at least two pulse signals selected from the pulse signals output from the plurality of counters.

Abstract translation: 提供一种包括旋转信号输出部件，半周期信号生成部件，多个计数器和占空比控制信号生成部件的无刷电动机驱动装置。 多个计数器中的每一个使用不同的位数进行计数，重复复位计数值并重新开始每个位数的计数操作，与半周期信号的上升或下降一起复位计数值，并输出一个 脉冲信号对于在执行计数操作时发生的每个复位而被反转。 占空比控制信号产生部件基于从多个计数器输出的脉冲信号中选择的至少两个脉冲信号，产生占空比控制信号，以确定用于控制单相无刷电动机的驱动的控制信号的占空比。

公开(公告)号：US5621288A

公开(公告)日：1997-04-15

申请号：US340372

申请日：1994-11-14

Applicant: Kunio Seki ,  Toshiyuki Tsunoda ,  Yuichi Ohkubo

Inventor： Kunio Seki ,  Toshiyuki Tsunoda ,  Yuichi Ohkubo

IPC: G11B19/20 ,  G11B19/28 ,  H02P6/06 ,  H02P6/16 ,  H02P6/20 ,  H02P1/18

CPC classification number: H02P6/20 ,  G11B19/20 ,  G11B19/28 ,  H02P6/06

Abstract: A motor speed regulating circuit includes a speed signal generator for generating a speed signal having a frequency proportional to the speed of the motor, synchronously with the rotation of the motor. A time difference detector is used for detecting a time difference between the period of the speed signal and a predetermined standard time. A control voltage generator is used for generating a speed control voltage to be applied to the motor in accordance with a detected time difference and feedback-controlling the speed of the motor in accordance with the standard time. A starter is used for starting the motor after the motor is stopped. The motor can be reliably restarted after it has been stopped.

Abstract translation: 电动机速度调节电路包括速度信号发生器，用于与电动机的旋转同步地产生具有与电动机速度成比例的频率的速度信号。 时差检测器用于检测速度信号的周期与预定的标准时间之间的时间差。 控制电压发生器用于根据检测到的时间差产生要施加到电动机的速度控制电压，并根据标准时间反馈控制电动机的速度。 电机停止后，起动器用于启动电机。 电机停止后可以可靠地重新起动。

公开(公告)号：US5428281A

公开(公告)日：1995-06-27

申请号：US152670

申请日：1993-11-16

Applicant: Kunio Seki ,  Yuichi Ohkubo

Inventor： Kunio Seki ,  Yuichi Ohkubo

IPC: H02P6/06 ,  H02P6/08 ,  H02P6/02

CPC classification number: H02P6/08

Abstract: A semiconductor integrated circuit device incorporates a voltage step-up (boost) circuit which produces a stepped-up (boosted) voltage higher than the power voltage based on a periodic pulse signal generated internally or supplied from the outside. The stepped-up voltage is supplied to the emitter of a pnp driving transistor that produces a drive current for the output transistor on the voltage source side which is the one of a pair of npn output transistors in push-pull configuration. The voltage step-up circuit has its current supply capacity varied in response to the current flowing through the output transistor or driving transistor.

Abstract translation: 半导体集成电路装置包括升压（升压）电路，其基于内部产生的或从外部供应的周期性脉冲信号产生比电源电压高的升压（升压）电压。 升压电压被提供给pnp驱动晶体管的发射极，该pnp驱动晶体管产生用于推挽配置的一对npn输出晶体管中的一个的电压源侧的输出晶体管的驱动电流。 电压升压电路的电流供应容量随流过输出晶体管或驱动晶体管的电流而变化。

公开(公告)号：US4520282A

公开(公告)日：1985-05-28

申请号：US411997

申请日：1982-08-27

Applicant: Kazuo Watanabe ,  Yuichi Ohkubo ,  Akira Haeno ,  Fumihiko Yokogawa

Inventor： Kazuo Watanabe ,  Yuichi Ohkubo ,  Akira Haeno ,  Fumihiko Yokogawa

IPC: H03G3/10 ,  H03F3/45 ,  H03H11/02 ,  H03H11/46 ,  H03K3/023 ,  H03H11/00

CPC classification number: H03F3/45479 ,  H03H11/46

Abstract: An electronic impedance circuit is constructed of a voltage-current converter and a variable gain current amplifier. The voltage-current converter includes first and second transistors of the PNP-type differentially connected. The variable gain current amplifier includes third and fourth transistors of the NPN-type differentially connected, and fifth and sixth transistors of the PNP-type as load means. The bases of the third and fourth transistors are respectively driven by collector signals of the first and second transistors, and a collector signal of the third transistor is fed back to the base of the second transistor. In order to reduce a d.c. offset attributed to a current flowing between the base of the second transistor and the collector of the third transistor, a compensation circuit is connected to the variable gain amplifier. This compensation circuit can provide compensation by producing a compensation current for cancelling the current between the base of the second transistor and the collector of the third transistor.

Abstract translation: 电子阻抗电路由电压 - 电流转换器和可变增益电流放大器构成。 电压 - 电流转换器包括PNP型差分连接的第一和第二晶体管。 可变增益电流放大器包括NPN型差分连接的第三和第四晶体管，以及PNP型作为负载装置的第五和第六晶体管。 第三和第四晶体管的基极分别由第一和第二晶体管的集电极信号驱动，第三晶体管的集电极信号被反馈到第二晶体管的基极。 为了减少直流 归因于在第二晶体管的基极和第三晶体管的集电极之间流动的电流的补偿，补偿电路连接到可变增益放大器。 该补偿电路可以通过产生用于消除第二晶体管的基极和第三晶体管的集电极之间的电流的补偿电流来提供补偿。

公开(公告)号：US20100237818A1

公开(公告)日：2010-09-23

申请号：US12722172

申请日：2010-03-11

Applicant: Yuichi Ohkubo ,  Hiroyuki Kikuta ,  Norihiro Kawagishi ,  Kazuyoshi Asakawa

Inventor： Yuichi Ohkubo ,  Hiroyuki Kikuta ,  Norihiro Kawagishi ,  Kazuyoshi Asakawa

IPC: H02K29/08

CPC classification number: H02P6/16 ,  H02P6/08 ,  H02P6/26

Abstract: A driving circuit feeds driving current to a coil in a brushless motor, and feeds bias current to a Hall element that senses the rotational position of the motor. The driving current and bias current are supplied from the same power supply, but the bias current passes through a load element that reduces power dissipation by the Hall bias circuit by causing some of the power to be dissipated by the load element instead. The Hall bias circuit can therefore be combined with the other driving circuitry into a single integrated circuit, even if the brushless motor is driven at a comparatively high voltage.

Abstract translation: 驱动电路将驱动电流馈送到无刷电动机中的线圈，并将偏置电流馈送到感测电动机的旋转位置的霍尔元件。 驱动电流和偏置电流由相同的电源供电，但是偏置电流通过负载元件，通过使负载元件消耗一些功率来降低霍尔偏置电路的功率消耗。 因此，即使在较高电压下驱动无刷电动机，霍尔偏置电路也可以与其他驱动电路组合成单个集成电路。

公开(公告)号：US5053650A

公开(公告)日：1991-10-01

申请号：US457308

申请日：1989-12-26

Applicant: Yuichi Ohkubo ,  Satoru Sekiguchi ,  Toshihiko Watanabe ,  Nobuaki Yoneya

Inventor： Yuichi Ohkubo ,  Satoru Sekiguchi ,  Toshihiko Watanabe ,  Nobuaki Yoneya

IPC: H01L27/04 ,  H01L21/822 ,  H03F3/45 ,  H03G5/04 ,  H03H3/00 ,  H03H11/04

CPC classification number: H03G5/04 ,  H03F3/45071 ,  H03H3/00 ,  H03F2203/45048 ,  H03F2203/45466

Abstract: A monolithic semiconductor integrated circuit device includes a differentially operative circuit section, an amplifying element connected to define a current flowing in the differentially operative circuit section and a circuit for adjusting a current flowing in the amplifying element to thereby compensate for variations of electric characteristics from one semiconductor device to another. The current adjusting circuit includes at least one amplifying element and a load resistance for the amplifying element in the current adjusting circuit. The load resistance has a structure suitable for a trimming operation to adjustably determine the resistance value of the load resistance. The amplifying elements are in a current mirror circuit connection with their control electrodes being concerned with each other so that the electric current flowing in the current path between the current receiving and delivering electrodes of the amplifying element connected to define the current flowing in the differentially operative circuit section is controlled by the adjustably determined resistance of the load resistance.

Abstract translation: 单片半导体集成电路装置包括差分操作电路部分，连接以限定在差分操作电路部分中流动的电流的放大元件和用于调节在放大元件中流动的电流的电路，从而补偿来自一个的电特性的变化 半导体器件到另一个。 电流调节电路包括至少一个放大元件和用于电流调节电路中的放大元件的负载电阻。 负载电阻具有适于修整操作的结构，以可调整地确定负载电阻的电阻值。 放大元件处于与其控制电极相互关联的电流镜电路连接中，使得在放大元件的电流接收和输出电极之间的电流路径中流动的电流连接以限定在差分操作中流动的电流 电路部分由可调节确定的负载电阻的电阻控制。

公开(公告)号：US20100237898A1

公开(公告)日：2010-09-23

申请号：US12724782

申请日：2010-03-16

Applicant: Hiroyuki KIKUTA ,  Norihiro KAWAGISHI ,  Yuichi OHKUBO

Inventor： Hiroyuki KIKUTA ,  Norihiro KAWAGISHI ,  Yuichi OHKUBO

IPC: G01R31/36

CPC classification number: H02M1/32 ,  G01R19/165 ,  G01R31/40

Abstract: An overcurrent detecting circuit includes a comparison transistor, a constant current source circuit, a subtraction circuit, and a comparison circuit. The comparison transistor is used for comparison with a main transistor provided in the power circuit. The constant current source circuit supplies a constant current to the comparison transistor. The subtraction circuit subtracts a voltage corresponding to a power supply voltage from a voltage between a drain and a source of the comparison transistor and outputs a voltage indicating the subtraction result. The comparison circuit compares the voltage output from the subtraction circuit with a voltage corresponding to a source voltage of the main transistor and outputs a voltage indicating the comparison result.

Abstract translation: 过电流检测电路包括比较晶体管，恒流源电路，减法电路和比较电路。 比较晶体管用于与设置在电源电路中的主晶体管进行比较。 恒流源电路向比较晶体管提供恒定电流。 减法电路从比较晶体管的漏极和源极之间的电压中减去与电源电压相对应的电压，并输出表示减法结果的电压。 比较电路将来自减法电路的电压输出与对应于主晶体管的源极电压的电压进行比较，并输出表示比较结果的电压。

公开(公告)号：US4525636A

公开(公告)日：1985-06-25

申请号：US413147

申请日：1982-08-30

Applicant: Yasuo Kominami ,  Yuichi Ohkubo ,  Kohki Aizawa ,  Satoshi Sasaki

Inventor： Yasuo Kominami ,  Yuichi Ohkubo ,  Kohki Aizawa ,  Satoshi Sasaki

IPC: H03G3/10 ,  H03F1/30 ,  H03H11/02 ,  H03H11/46 ,  H03K3/023 ,  H03K17/16

CPC classification number: H03H11/46 ,  H03F1/305

Abstract: A variable electronic impedance circuit contains a voltage-current converter having an input terminal which is supplied with an input signal voltage, and a variable-gain current amplifier having an input terminal which is supplied with an output current of the voltage-current converter. The output signal current of the amplifier is fed back to the input terminal of the voltage-current converter.In order to prevent undesirable oscillation immediately after the closure of a power supply switch, the variable electronic impedance circuit includes a control circuit which substantially inhibits the operation of the voltage-current converter for a predetermined time after the closure of the power supply switch.

Abstract translation: 可变电子阻抗电路包括具有输入信号电压的输入端的电压 - 电流转换器和具有输入端的可变增益电流放大器，该输入端被提供有电压 - 电流转换器的输出电流。 放大器的输出信号电流反馈到电压 - 电流转换器的输入端。 为了防止在电源开关闭合后立即产生不期望的振荡，可变电子阻抗电路包括控制电路，其在电源开关闭合之后的预定时间内基本上禁止电压 - 电流转换器的操作。

公开(公告)号：US20100237812A1

公开(公告)日：2010-09-23

申请号：US12719393

申请日：2010-03-08

Applicant: Kunio SEKI ,  Kazutaka INOUE ,  Hiroyuki KIKUTA ,  Yuichi OHKUBO

Inventor： Kunio SEKI ,  Kazutaka INOUE ,  Hiroyuki KIKUTA ,  Yuichi OHKUBO

IPC: H02P6/18

CPC classification number: H02P6/18

Abstract: A motor driving apparatus that includes a current changing component, a detecting component, a control component, a back electromotive voltage zero cross detecting component, and a change control component. The current changing component drives a motor. The detecting component detects a point where a value of a magnitude of a current flowing into a coil of the motor changes from a decrease to an increase. The control component controls so that supply of the current to the coil is shut down, when the point is detected and the back electromotive voltage zero cross detecting component detects a zero cross of a back electromotive voltage generated in the coil. The change control component controls so that the direction of the current flowing into the coil changes to a reverse direction opposite to the predetermined direction, when the zero cross is detected.

Abstract translation: 一种电动机驱动装置，包括电流变化部件，检测部件，控制部件，反电动势电压零交叉检测部件和变更控制部件。 电流变化部件驱动电机。 检测部件检测流入电动机的线圈的电流的大小的值从减小变化到增加的点。 控制部件控制使得当检测到该点并且反向电动势电压零交叉检测部件检测到在线圈中产生的反电动势电压的零交叉时，关闭到线圈的电流的供应。 改变控制部件控制使得当检测到零交叉时，流入线圈的电流的方向变为与预定方向相反的相反方向。