公开(公告)号：US08289000B2

公开(公告)日：2012-10-16

申请号：US12666136

申请日：2008-09-01

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: H02J7/04 ,  H02J7/16 ,  H02J7/06

CPC classification number: H02M3/1588 ,  H01M10/44 ,  H02J7/041 ,  H02J7/045 ,  Y02B40/90 ,  Y02B70/1466

Abstract: When a control circuit detects from a signal CPO4 that a battery voltage is less than a sixth reference voltage, a constant current operation in VFM control is performed with respect to a switching transistor and a synchronous rectification transistor in accordance with signals RVDET and CPO3. Furthermore, when the control circuit detects from the signal CPO4 that the battery voltage becomes equal to or greater than the sixth reference voltage, the constant current operation in PWM control is performed in accordance with a signal CPO2. When an output signal CVDET from a constant current/constant voltage switching detection circuit becomes high level, operation control with respect to the switching transistor and the synchronous rectification transistor is switched from the PWM control of constant current operations to the PWM control of constant voltage operations in accordance with a signal CPO1.

Abstract translation: 当控制电路从信号CPO4检测到电池电压小于第六参考电压时，根据信号RVDET和CPO3对开关晶体管和同步整流晶体管执行VFM控制中的恒定电流操作。 此外，当控制电路从信号CPO4检测到电池电压变得等于或大于第六参考电压时，根据信号CPO2执行PWM控制中的恒定电流操作。 当来自恒定电流/恒定电压切换检测电路的输出信号CVDET变为高电平时，相对于开关晶体管和同步整流晶体管的操作控制从恒定电流操作的PWM控制切换到恒定电压操作的PWM控制 根据信号CPO1。

公开(公告)号：US07782011B2

公开(公告)日：2010-08-24

申请号：US10920810

申请日：2004-08-18

Applicant: Junji Nishida ,  Shinya Manabe

Inventor： Junji Nishida ,  Shinya Manabe

IPC: H02J7/00

CPC classification number: H02J7/0077 ,  H02J7/0021

Abstract: A charging apparatus for charging a plurality of detachable battery packs includes a charging device for charging the plurality of battery packs one after another. A monitoring device is included to monitor attachment of a battery pack. A memory is included to store attachment history data of a battery pack based upon a monitoring result. A switching device is included to switch from one of the battery packs to the next battery pack. A voltage detecting device is included to detect a voltage of the next battery pack before charging. A charging manner setting device is included to set any one of constant current charging and constant voltage charging in accordance with the detected voltage. A charge current detecting device is also included to detect a current during charging of the next battery pack.

Abstract translation: 一种用于对多个可拆卸电池组充电的充电装置，包括一个接一个地对多个电池组充电的充电装置。 包括监视装置以监视电池组的附件。 包括存储器以基于监视结果来存储电池组的附件历史数据。 包括开关装置以从一个电池组切换到下一个电池组。 包括电压检测装置以在充电之前检测下一个电池组的电压。 包括充电方式设定装置，以根据检测到的电压来设定恒流充电和恒压充电中的任一种。 还包括充电电流检测装置以在下一个电池组的充电期间检测电流。

公开(公告)号：US07679942B2

公开(公告)日：2010-03-16

申请号：US11716591

申请日：2007-03-12

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/40

CPC classification number: H02M3/1588 ,  H02M3/1584 ,  Y02B70/1466

Abstract: A step-down DC-to-DC converter includes an input terminal, an output terminal, a switching transistor, and a rectifying transistor. The switching circuit is connected between the input terminal and the output terminal and is configured to reduce an input voltage down to a predetermined voltage and to output the predetermined voltage from the output terminal to an external load. The series circuit includes a switching transistor and an inductor. The switching transistor is connected between the input terminal and the inductor, and is configured to perform a switching operation. The inductor is connected between the switching transistor and the output terminal. The rectifying transistor includes a P-type transistor and connected between a connected point between the switching transistor and a common ground. The rectifying transistor has a gate connected to the connected point.

Abstract translation: 降压DC-DC转换器包括输入端子，输出端子，开关晶体管和整流晶体管。 开关电路连接在输入端子和输出端子之间，并且被配置为将输入电压降低到预定电压并将预定电压从输出端子输出到外部负载。 串联电路包括开关晶体管和电感器。 开关晶体管连接在输入端子和电感器之间，并被配置为执行开关操作。 电感器连接在开关晶体管和输出端子之间。 整流晶体管包括P型晶体管，并连接在开关晶体管和公共地之间的连接点之间。 整流晶体管具有连接到连接点的栅极。

公开(公告)号：US07659706B2

公开(公告)日：2010-02-09

申请号：US11714365

申请日：2007-03-05

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F3/16 ,  G05F3/20

CPC classification number: H02H3/087 ,  G01R19/0092 ,  H02M3/156 ,  H02M2001/0009 ,  H03K17/0822 ,  H03K17/145 ,  H03K17/6872 ,  Y10S323/907

Abstract: A current detector circuit for detecting a load current flowing through a load includes a first series circuit having a first element and the load connected in series, a second series circuit having a second element and a resistor connected in series, the second element having a temperature characteristic equal to the temperature characteristic of the resistance of the first element, a power supply configured to supply voltage to the first series circuit and the second series circuit, and a control circuit configured to control the voltage drop across the second element so that the voltage drop across the second element is equal to the voltage drop across the first element. A current detection signal corresponding to the load current is generated based on a current flowing through the second element.

Abstract translation: 用于检测流过负载的负载电流的电流检测器电路包括具有第一元件和串联连接的负载的第一串联电路，具有串联连接的第二元件和电阻器的第二串联电路，第二元件具有温度 特性等于第一元件的电阻的温度特性，被配置为向第一串联电路和第二串联电路供应电压的电源;以及控制电路，被配置为控制跨越第二元件的电压，使得电压 跨越第二元件的电压等于第一元件上的电压降。 基于流过第二元件的电流产生对应于负载电流的电流检测信号。

公开(公告)号：US07605573B2

公开(公告)日：2009-10-20

申请号：US11547325

申请日：2006-03-02

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/00

CPC classification number: H02M3/33523

Abstract: A CMC-type switching regulator is disclosed that includes: a switching element switching to control outputting of input voltage; a smoothing circuit outputting the smoothed output voltage of the switching element to an output terminal; a voltage divider dividing the output voltage; an error amplifier amplifying the difference between reference voltage and the divided voltage; a slope voltage generator generating slope voltage according to the reference voltage, correcting the slope of the slope voltage in accordance with the input-output voltage difference, detecting current flowing through the switching element and generating voltage according to the detected current, and outputting the generated voltage and the corrected slope voltage; a pulse generator outputting a pulse signal having time width according to the output voltages of the error amplifier and the slope voltage generator; and a switching controller controlling the switching of the switching element in accordance with the output signal of the pulse generator.

Abstract translation: 公开了一种CMC型开关调节器，其包括：开关元件切换以控制输入电压的输出; 平滑电路，将所述开关元件的平滑输出电压输出到输出端子; 分压输出电压的分压器; 放大参考电压和分压之间的差的误差放大器; 斜率电压发生器，根据参考电压生成斜坡电压，根据输入输出电压差校正斜率电压的斜率，检测流过开关元件的电流，并根据检测到的电流产生电压，并输出所产生的 电压和校正斜率电压; 脉冲发生器输出具有根据误差放大器和斜坡电压发生器的输出电压的时间宽度的脉冲信号; 以及开关控制器，其根据脉冲发生器的输出信号控制开关元件的开关。

公开(公告)号：US07589509B2

公开(公告)日：2009-09-15

申请号：US11898623

申请日：2007-09-13

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/00

CPC classification number: H03K4/502

Abstract: A switching regulator that includes a switching transistor configured to control an output current by switching, a proportional current generator configured to generate a current proportional to a current flowing through the switching transistor, a first slope voltage generator configured to generate a linear slope voltage, a second slope voltage generator configured to generate a slope voltage having a secondary curve characteristic by integrating the current proportional to the current flowing through the switching transistor, and a slope voltage compensation circuit to generate a superimposed slope voltage formed by superimposing an output voltage of the first slope voltage generator on an output voltage of the second slope voltage generator.

Abstract translation: 一种开关调节器，包括被配置为通过切换来控制输出电流的开关晶体管，配置成产生与流过开关晶体管的电流成比例的电流的比例电流发生器，被配置为产生线性斜率电压的第一斜坡电压发生器， 第二斜坡电压发生器，被配置为通过积分与流过开关晶体管的电流成比例的电流产生具有二次曲线特性的斜率电压，以及斜率电压补偿电路，以产生叠加的斜率电压，该叠加斜坡电压通过叠加第一 斜坡电压发生器在第二斜坡电压发生器的输出电压上。

公开(公告)号：US20090174384A1

公开(公告)日：2009-07-09

申请号：US12297806

申请日：2008-02-05

Applicant: Yuusuke Michishita ,  Junji Nishida

Inventor： Yuusuke Michishita ,  Junji Nishida

IPC: H02M3/155

CPC classification number: H02M3/158

Abstract: A disclosed switching regulator converts an input voltage to an output voltage of a predetermined level and outputs the output voltage. The disclosed switching regulator includes a switching transistor configured to be turned on and off according to a control signal; an inductor configured to be charged by the input voltage when the switching transistor is turned on; a mode switching circuit configured to generate a switching signal for switching a control mode of the switching transistor between a PWM control mode and a VFM control mode; and a control circuit configured to control the switching transistor in the PWM control mode or the VFM control mode depending on the switching signal from the mode switching circuit so that the output voltage is maintained at the predetermined level.

Abstract translation: 公开的开关调节器将输入电压转换为预定电平的输出电压并输出输出电压。 所公开的开关调节器包括根据控制信号导通和断开的开关晶体管; 电感器，被配置为当所述开关晶体管导通时由所述输入电压充电; 模式切换电路，被配置为产生用于在PWM控制模式和VFM控制模式之间切换所述开关晶体管的控制模式的切换信号; 以及控制电路，被配置为根据来自模式切换电路的切换信号来控制PWM控制模式或VFM控制模式中的开关晶体管，使得输出电压保持在预定电平。

公开(公告)号：US20080203990A1

公开(公告)日：2008-08-28

申请号：US12034377

申请日：2008-02-20

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/10

CPC classification number: H02M3/1582

Abstract: A switching regulator that includes an inductor, a first step-down switch to store charge in the inductor, a second step-down switch to discharge the charge, a first step-up switch to store charge in the inductor, a second step-up switch to discharge the charge, a reverse current detector to detect a reverse current from an output terminal to the inductor through the second step-up switch, or an indication of the reverse current, based on a detection voltage, and a controller to control the first and second step-down switches, and the first and second step-up switches to output a predetermined constant voltage, and to shut off the second step-up switch to make shutdown condition when the detector detects the reverse current or an indication of the reverse current. The reverse current detector may have a threshold value in the step-down operation that is different from a threshold value in the step-up operation.

Abstract translation: 一种开关调节器，包括电感器，用于在电感器中存储电荷的第一降压开关，用于放电电荷的第二降压开关，用于在电感器中存储电荷的第一升压开关，第二升压 切换到放电电荷，反向电流检测器，通过第二升压开关检测从输出端子到电感器的反向电流，或者基于检测电压的反向电流的指示，以及控制器 第一和第二降压开关，以及第一和第二升压开关，以输出预定的恒定电压，并且当检测器检测到反向电流时，关闭第二升压开关以进行关断状态，或者指示 反向电流。 反向电流检测器可以在降压操作中具有与升压操作中的阈值不同的阈值。

公开(公告)号：US07348765B2

公开(公告)日：2008-03-25

申请号：US11698461

申请日：2007-01-25

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/56

CPC classification number: H02M3/156 ,  H02M2001/0025

Abstract: This patent specification describes a DC-DC converter which includes a switch configured to control an output voltage, a driver circuit configured to drive the switch, a flip-flop configured to control the driver circuit, an error amplifier configured to compare a feedback voltage of the output voltage with a reference voltage, a detector configured to sense an output current, a control voltage generator configured to generate a control voltage being ramped and a PWM comparator configured to compare the control voltage with an output voltage of the error amplifier and output a reset signal to the flip-flop. Ramping speed of the control voltage is changed in accordance with an external-control voltage input at an external-control terminal.

Abstract translation: 该专利说明书描述了一种DC-DC转换器，其包括被配置为控制输出电压的开关，被配置为驱动开关的驱动器电路，被配置为控制驱动器电路的触发器，误差放大器，被配置为将 具有参考电压的输出电压，被配置为感测输出电流的检测器，被配置为产生斜坡控制电压的控制电压发生器和被配置为将所述控制电压与所述误差放大器的输出电压进行比较并输出 复位信号到触发器。 根据外部控制端子输入的外部控制电压来改变控制电压的斜坡速度。

公开(公告)号：US07319311B2

公开(公告)日：2008-01-15

申请号：US10572618

申请日：2005-07-15

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/56

CPC classification number: H01M10/44 ,  H01M10/48 ,  H02M3/156

Abstract: A switching regulator is disclosed that is able to prevent reverse direction current flow without using a dedicated diode even when a PMOS transistor is used as a switching transistor of a step-down switching regulator. A selection circuit is provided to control connection of the substrate gate of the switching transistor, and a control circuit controls the selection circuit to connect the substrate gate to the drain of the switching transistor when the voltage on an input terminal of the switching regulator is less than or equal to the voltage on the output terminal of the switching regulator, and connect the substrate gate to the source of the switching transistor when the voltage on the input terminal is greater than the voltage on the output terminal.

Abstract translation: 公开了一种开关调节器，其即使当PMOS晶体管用作降压型开关调节器的开关晶体管时也能够防止逆向电流流动而不使用专用二极管。 提供选择电路以控制开关晶体管的衬底栅极的连接，并且当开关调节器的输入端子上的电压较小时，控制电路控制选择电路将衬底栅极连接到开关晶体管的漏极 大于或等于开关调节器的输出端子上的电压，并且当输入端子上的电压大于输出端子上的电压时，将衬底栅极连接到开关晶体管的源极。