公开(公告)号：US08994323B2

公开(公告)日：2015-03-31

申请号：US13602001

申请日：2012-08-31

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: H02J7/00 ,  G01R25/00 ,  H03K5/22 ,  H03K17/687

CPC classification number: H02J7/0034 ,  G01R25/00 ,  H03K5/22 ,  H03K17/687

Abstract: A charging circuit includes a power path control unit which switches a first switch connected between a system connection terminal and a battery connection terminal on while not charging, and switches the first switch on and a second switch connected between an external power supply input terminal and the system connection terminal on while charging so as to supply power to a system and charge a battery. A voltage difference between the external power supply input terminal and the battery connection terminal is detected, a current flowing between the external power supply input terminal and the system connection terminal is detected, and it is determined that an external power supply is disconnected based on the detection results of the voltage differences and the current.

Abstract translation: 充电电路包括电源路径控制单元，其在不充电的同时切换连接在系统连接端子和电池连接端子之间的第一开关，并且将第一开关接通和连接在外部电源输入端子与第二开关之间的第二开关 系统连接端子在充电时打开，以向系统供电并为电池充电。 检测外部电源输入端子和电池连接端子之间的电压差，检测在外部电源输入端子与系统连接端子之间流动的电流，并且基于该外部电源输入端子与系统连接端子断开外部电源 电压差和电流的检测结果。

公开(公告)号：US08760139B2

公开(公告)日：2014-06-24

申请号：US13607199

申请日：2012-09-07

Applicant: Junji Nishida ,  Masaya Uchida

Inventor： Junji Nishida ,  Masaya Uchida

IPC: G05F1/00

CPC classification number: H02M3/1588 ,  H02M2001/0003 ,  H02M2001/0009 ,  H02M2001/0022 ,  Y02B70/1466 ,  Y10T307/50

Abstract: A DC-DC converter control circuit, to control a DC-DC converter having an inductor and two switches, including a first feedback circuit; a second feedback circuit; a synthesis circuit to add a first feedback voltage indicating a DC component of an inductor current based on an output current of the DC-DC converter and a second feedback voltage indicating an AC component thereof to generate a third feedback voltage; a comparator to compare the third feedback voltage with a reference voltage to output a comparison result; and an on-time adjusting circuit to adjust on/off time of the switches based on the comparison result for outputting a control signal depending on the adjusting result. The second feedback voltage is generated based on a difference between input and output voltages of the DC-DC converter when the control signal is low and based on the output voltage when the control signal is high.

Abstract translation: 一种DC-DC转换器控制电路，用于控制具有电感器的DC-DC转换器和包括第一反馈电路的两个开关; 第二个反馈电路; 合成电路，其基于所述DC-DC转换器的输出电流和表示其AC分量的第二反馈电压来添加指示电感器电流的直流分量的第一反馈电压以产生第三反馈电压; 比较器，用于将第三反馈电压与参考电压进行比较以输出比较结果; 以及基于用于根据调整结果输出控制信号的比较结果来调节开关的接通/断开时间的接通时间调节电路。 当控制信号为低时，基于控制信号为高电平时的输出电压，基于DC-DC转换器的输入和输出电压之间的差异产生第二反馈电压。

公开(公告)号：US08129970B2

公开(公告)日：2012-03-06

申请号：US12034377

申请日：2008-02-20

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/00

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：US07684163B2

公开(公告)日：2010-03-23

申请号：US11517962

申请日：2006-09-07

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: H02H3/08 ,  H02H9/02

CPC classification number: H02H11/005

Abstract: A device for detecting an abnormal connection status of a load connected between a first connection terminal and a second connection terminal is disclosed. An abnormal connection detecting circuit includes a first transistor configured to receive a predetermined first bias voltage, and output a current according to a voltage of the second connection terminal; and an abnormality detector configured to detect the current output from the first transistor, and detect the abnormal connection status based on the detected current.

Abstract translation: 公开了一种用于检测连接在第一连接端子和第二连接端子之间的负载的异常连接状态的装置。 异常连接检测电路包括：第一晶体管，被配置为接收预定的第一偏置电压，并根据第二连接端子的电压输出电流; 以及异常检测器，被配置为检测来自第一晶体管的电流输出，并且基于检测到的电流来检测异常连接状态。

公开(公告)号：US07514910B2

公开(公告)日：2009-04-07

申请号：US12020023

申请日：2008-01-25

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/40

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：US20090085540A1

公开(公告)日：2009-04-02

申请号：US12224560

申请日：2008-01-16

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/00

CPC classification number: H02M3/1588 ,  H02M3/1582 ,  Y02B70/1466

Abstract: A voltage rising/falling type switching regulator includes an inductor, a voltage-falling switching element, a voltage-falling rectifier element, a voltage-rising switching element, a voltage-rising synchronous rectification switching element, a control circuit part, and a reverse current detecting part. The control circuit part is arranged so that the voltage-falling switching element is switched ON and set in a conduction state at the time of voltage-rising operation, and the voltage-rising synchronous rectification switching element is switched ON and set in a conduction state at the time of voltage-falling operation. If the reverse current detecting part detects a reverse current, the voltage-falling switching element is switched OFF and set in a cut-off state.

Abstract translation: 电压上升/下降型开关调节器包括电感器，降压开关元件，降压整流元件，升压开关元件，升压同步整流开关元件，控制电路部分和反向 电流检测部分。 控制电路部分被布置成使得降压开关元件被接通并在升压操作时设定为导通状态，并且升压同步整流开关元件接通并设置在导通状态 在电压下降操作时。 如果反向电流检测部分检测到反向电流，则降压开关元件被切断并设置在截止状态。

公开(公告)号：US20080218144A1

公开(公告)日：2008-09-11

申请号：US10587622

申请日：2005-02-17

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/565

CPC classification number: H02M7/2176 ,  H02M2001/007

Abstract: A power-supply apparatus for outputting from an output terminal via one or more switching elements, each having a control electrode, a voltage input to an input terminal, is disclosed. The apparatus includes a voltage-generating circuit for generating an output voltage Vo proportional to a voltage between an input end and an output end of the switching element so as to output the generated voltage, and a control circuit for controlling an operation of the switching element depending on the output voltage Vo of the voltage-generating circuit. The control circuit causes the switching element to reduce an output current when the output voltage Vo of the voltage-generating circuit exceeds a predetermined voltage Vs.

Abstract translation: 公开了一种用于从输出端子经由一个或多个开关元件输出的电源装置，每个开关元件具有控制电极，输入到输入端子的电压。 该装置包括用于产生与开关元件的输入端和输出端之间的电压成比例的输出电压Vo以产生所产生的电压的电压产生电路，以及用于控制开关元件的操作的控制电路 取决于发电电路的输出电压Vo。 当发电电路的输出电压Vo超过规定的电压Vs时，控制电路使开关元件降低输出电流。

公开(公告)号：US20070263334A1

公开(公告)日：2007-11-15

申请号：US11714365

申请日：2007-03-05

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: H02H5/04

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

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

Abstract translation: 公开了一种检测流过负载的负载电流的电流检测器电路。 电流检测器电路包括具有第一导体和串联连接的负载的第一串联电路; 第二串联电路，具有串联连接的第二导体和电阻器，所述第二导体的温度特性等于所述第一导体的电阻的温度特性; 电源，被配置为向所述第一串联电路和所述第二串联电路提供电压; 以及控制电路，被配置为控制跨越第二导体的电压降，使得跨越第二导体的电压降等于第一导体上的电压降。 基于流经第二导体的电流产生对应于负载电流的电流检测信号。

公开(公告)号：US20070057655A1

公开(公告)日：2007-03-15

申请号：US10572618

申请日：2005-07-15

Applicant: Junji Nishida

Inventor： Junji Nishida

IPC: G05F1/00

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。

公开(公告)号：US20060087290A1

公开(公告)日：2006-04-27

申请号：US11295450

申请日：2005-12-07

Applicant: Junji Nishida ,  Shinya Manabe

Inventor： Junji Nishida ,  Shinya Manabe

IPC: H02J7/00

CPC classification number: H02J7/0073 ,  H02J7/0093 ,  H02J7/041 ,  H02J7/045 ,  H02J7/082 ,  H02J7/085

Abstract: A charging circuit for a secondary battery includes a constant-voltage circuit part outputting one of a plurality of predetermined constant voltages and charges the secondary battery by applying the constant voltage thereto, a detection circuit part detecting a battery voltage of the secondary battery, and a control circuit part controlling the selection of the constant-voltage in response to the detected battery voltage. Another charging circuit includes a constant-current circuit part outputting, to the secondary battery, one of two predetermined constant currents, a constant-voltage circuit part charging the secondary battery by applying a predetermined constant voltage thereto, a battery voltage detection circuit part detecting a battery voltage of the secondary battery, a charge current detection circuit part outputting a predetermined charge completion signal, and a charge control circuit part stopping operations of the constant-current circuit part and constant-voltage circuit part when receiving the charge completion signal.