公开(公告)号：US06741105B2

公开(公告)日：2004-05-25

申请号：US10418197

申请日：2003-04-18

申请人： Katsuyuki Yasukouchi ,  Ayuko Watabe ,  Katsuya Shimizu

发明人： Katsuyuki Yasukouchi ,  Ayuko Watabe ,  Katsuya Shimizu

IPC分类号： G11C2702

CPC分类号： H03K5/2418

摘要： A peak hold circuit which improves the precision of a hold voltage. The peak hold circuit includes a first input transistor which receives an input voltage and a second input transistor which receives the hold voltage. The peak hold circuit further includes a hold capacitor, a hold-voltage setting transistor and a bypass circuit. The hold capacitor supplies the hold voltage to the second input transistor. The hold-voltage setting transistor receives base current from the collector of the first input transistor and makes the hold voltage coincide with the input voltage in accordance with the base current. The bypass circuit bypasses bias current to be supplied to the second input transistor when the hold-voltage setting transistor is turned off.

摘要翻译： 一种提高保持电压精度的峰值保持电路。 峰值保持电路包括接收输入电压的第一输入晶体管和接收保持电压的第二输入晶体管。 峰值保持电路还包括保持电容器，保持电压设置晶体管和旁路电路。 保持电容将保持电压提供给第二输入晶体管。 保持电压设定晶体管从第一输入晶体管的集电极接收基极电流，并使保持电压根据基极电流与输入电压一致。 当保持电压设定晶体管截止时，旁路电路绕过要提供给第二输入晶体管的偏置电流。

公开(公告)号：US06806770B2

公开(公告)日：2004-10-19

申请号：US10419233

申请日：2003-04-21

申请人： Katsuyuki Yasukouchi ,  Ayuko Watabe

发明人： Katsuyuki Yasukouchi ,  Ayuko Watabe

IPC分类号： H03F345

CPC分类号： H03F3/45094 ,  H03F3/3067 ,  H03F2203/45028 ,  H03F2203/45308

摘要： An operational amplifier for increasing the response speed of its output voltage relative to an input signal while increasing the tolerable amplitude of the output voltage. The operational amplifier includes a PNP output transistor connected to a high potential power supply, an NPN output transistor connected between the PNP output transistor and a low potential power supply, and a drive unit, which drives each output transistor in accordance with an input current. The drive unit includes a current source, a first current mirror circuit, and a second mirror circuit. The input current is supplied to a node between the first and second current mirror circuits. The base of the NPN output transistor is connected to the node, and the base of the PNP output transistor is connected to a further node between the current source and the first current mirror circuit.

摘要翻译： 一个运算放大器，用于增加输出电压相对于输入信号的响应速度，同时增加输出电压的容许幅度。 运算放大器包括连接到高电位电源的PNP输出晶体管，连接在PNP输出晶体管和低电位电源之间的NPN输出晶体管，以及根据输入电流驱动每个输出晶体管的驱动单元。 驱动单元包括电流源，第一电流镜电路和第二镜电路。 输入电流被提供给第一和第二电流镜电路之间的节点。 NPN输出晶体管的基极连接到节点，PNP输出晶体管的基极连接到电流源和第一电流镜电路之间的另一个节点。

公开(公告)号：US07113041B2

公开(公告)日：2006-09-26

申请号：US11108815

申请日：2005-04-19

申请人： Katsuyuki Yasukouchi ,  Ayuko Watabe

发明人： Katsuyuki Yasukouchi ,  Ayuko Watabe

IPC分类号： H03F3/26

CPC分类号： H03F3/3067 ,  H03F3/45475 ,  H03F2203/30012

摘要： An operational amplifier that decreases idling current, widens a voltage output range, and increases load driving capacity. The operational amplifier includes a first output transistor connected to a high potential power supply. A second output transistor is connected between the first output transistor and a low potential power supply. The first and second output transistors generate an output signal at a node between the first output transistor and the second output transistor. An idling current control circuit controls the collector current of the first output transistor in accordance with the base voltage of the second output transistor to control the idling current of the first and second output transistors.

公开(公告)号：US20050179496A1

公开(公告)日：2005-08-18

申请号：US11108815

申请日：2005-04-19

申请人： Katsuyuki Yasukouchi ,  Ayuko Watabe

发明人： Katsuyuki Yasukouchi ,  Ayuko Watabe

IPC分类号： H03F1/02 ,  H03F3/30 ,  H03F3/45 ,  H03F3/26

CPC分类号： H03F3/3067 ,  H03F3/45475 ,  H03F2203/30012

摘要： An operational amplifier that decreases idling current, widens a voltage output range, and increases load driving capacity. The operational amplifier includes a first output transistor connected to a high potential power supply. A second output transistor is connected between the first output transistor and a low potential power supply. The first and second output transistors generate an output signal at a node between the first output transistor and the second output transistor. An idling current control circuit controls the collector current of the first output transistor in accordance with the base voltage of the second output transistor to control the idling current of the first and second output transistors.

公开(公告)号：US06903609B2

公开(公告)日：2005-06-07

申请号：US10108341

申请日：2002-03-29

申请人： Katsuyuki Yasukouchi ,  Ayuko Watabe

发明人： Katsuyuki Yasukouchi ,  Ayuko Watabe

IPC分类号： H03F1/02 ,  H03F3/30 ,  H03F3/45 ,  H03F3/26

CPC分类号： H03F3/3067 ,  H03F3/45475 ,  H03F2203/30012

摘要： An operational amplifier that decreases idling current, widens a voltage output range, and increases load driving capacity. The operational amplifier includes a first output transistor connected to a high potential power supply. A second output transistor is connected between the first output transistor and a low potential power supply. The first and second output transistors generate an output signal at a node between the first output transistor and the second output transistor. An idling current control circuit controls the collector current of the first output transistor in accordance with the base voltage of the second output transistor to control the idling current of the first and second output transistors.

摘要翻译： 降低空载电流的运算放大器，加大电压输出范围，增加负载驱动能力。 运算放大器包括连接到高电位电源的第一输出晶体管。 第二输出晶体管连接在第一输出晶体管和低电位电源之间。 第一和第二输出晶体管在第一输出晶体管和第二输出晶体管之间的节点处产生输出信号。 空载电流控制电路根据第二输出晶体管的基极电压控制第一输出晶体管的集电极电流，以控制第一和第二输出晶体管的空载电流。

公开(公告)号：US20050285579A1

公开(公告)日：2005-12-29

申请号：US10973257

申请日：2004-10-27

申请人： Katsuyuki Yasukouchi ,  Hidenobu Ito

发明人： Katsuyuki Yasukouchi ,  Hidenobu Ito

IPC分类号： H02M3/155 ,  G05F1/40 ,  H02M3/158

CPC分类号： H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： In a DC-DC converter of synchronous rectifying system, a control circuit of DC-DC converter capable of improving the control voltage value of output voltage at light load and enhancing the power conversion efficiency, and its control method are presented. An inverting input terminal of comparator COMP2 of which non-inverting input terminal is connected to a grounding potential is connected to one terminal of choke coil L1 by way of terminal (X). An output terminal (N1) of comparator COMP2 is connected to a delay circuit DL, and an output terminal (N2) of delay circuit DL is connected to AND gate circuit AND1. The delay circuit DL is a circuit for delaying the transition from high level to low level of input terminal (N1). Excessive power supplied more than demanded by the load at light load is returned to choke coil L1. Elevation of output voltage VOUT due to excess power accumulated in output capacitor C1 can be suppressed.

摘要翻译： 在同步整流系统的DC-DC转换器中，提出了一种能够提高轻载输出电压控制电压值，提高功率转换效率的DC-DC转换器控制电路及其控制方法。 通过端子（X）将同相输入端子连接到接地电位的比较器COMP 2的反相输入端子连接到扼流线圈L 1的一端。 比较器COMP2的输出端（N1）连接到延迟电路DL，并且延迟电路DL的输出端（N 2）连接到与门电路AND 1。 延迟电路DL是用于延迟从高电平到低电平的输入端子（N 1）的转换的电路。 在负载较轻的情况下供电超过供电的功率过大返回扼流圈L1。 可以抑制由于在输出电容器C 1中蓄积的过剩功率而导致的输出电压VOUT的升高。

公开(公告)号：US20050212499A1

公开(公告)日：2005-09-29

申请号：US10948644

申请日：2004-09-24

申请人： Katsuyuki Yasukouchi

发明人： Katsuyuki Yasukouchi

IPC分类号： H02M3/155 ,  G05F1/40 ,  G05F1/565 ,  H02M3/156 ,  H03F1/08

CPC分类号： H02M3/156 ,  H03F1/086 ,  H03F2200/78

摘要： Provides a switching regulator control circuit, a switching regulator and a switching regulator control method for achieving low current consumption and quick response at normal operating time. A change-over switch MFB for opening/closing the phase compensation is provided to establish both the quick responsibility using a gain of an error amplifier EA provided with no phase compensation and stability of control system provided with phase compensation. By turning the change-over switch MFB non-conductive at a timing in which the PMOS transistor M1 turns to conductive, the phase compensation between the input and output of the error amplifier EA is cut off. A detection voltage VM is amplified in term of error with a gain of the error amplifier EA itself. A quick transient response to changes in the output voltage VOUT is achieved corresponding to maximum response characteristic. Phase compensation between the input and output of the error amplifier EA is formed by turning the change-over switch MFB conductive at a timing in which the PMOS transistor M1 turns to non-conductive. Consequently, stability of the control system can be secured.

摘要翻译： 提供开关稳压器控制电路，开关稳压器和开关稳压器控制方法，用于在正常工作时间实现低电流消耗和快速响应。 提供了用于打开/关闭相位补偿的转换开关MFB，以利用不具有相位补偿的误差放大器EA的增益和具有相位补偿的控制系统的稳定性来建立快速责任。 通过在PMOS晶体管M 1变为导通的时刻转动不导通的切换开关MFB，误差放大器EA的输入和输出之间的相位补偿被切断。 检测电压VM以误差放大器EA本身的增益的方式放大。 对应于最大响应特性实现对输出电压VOUT变化的快速瞬态响应。 误差放大器EA的输入和输出之间的相位补偿是通过在PMOS晶体管M1变为不导通的定时转换转换开关MFB来形成的。 因此，可以确保控制系统的稳定性。

公开(公告)号：US08593126B2

公开(公告)日：2013-11-26

申请号：US13471604

申请日：2012-05-15

申请人： Shinichiro Suga ,  Kenta Ido ,  Tomohiro Suzuki ,  Hiroaki Sumiya ,  Katsuyuki Yasukouchi ,  Takahiro Yoshino

发明人： Shinichiro Suga ,  Kenta Ido ,  Tomohiro Suzuki ,  Hiroaki Sumiya ,  Katsuyuki Yasukouchi ,  Takahiro Yoshino

IPC分类号： G05F1/575 ,  G05F1/618

CPC分类号： H02M3/158 ,  H02M3/156 ,  H02M2001/0025

摘要： A power supply device that includes a switch circuit to which an input voltage is supplied, a coil coupled between the switch circuit and an output terminal from which an output voltage is outputted. A voltage adding circuit adds a slope voltage to a reference voltage. A control unit compares a feedback voltage corresponding to the output voltage and the reference voltage and switches the switch circuit at a timing corresponding to a comparison result of the feedback voltage and the reference voltage. A slope adjustment circuit differentiates a current flowing in the coil and adjusts a slope amount of the slope based on a differentiation result of the current.

摘要翻译： 一种电源装置，包括提供输入电压的开关电路，耦合在开关电路和输出端之间的线圈，输出端从输出端输出。 电压加法电路将斜率电压加到基准电压上。 控制单元将对应于输出电压的反馈电压和参考电压进行比较，并在与反馈电压和参考电压的比较结果相对应的定时切换开关电路。 斜率调整电路对流过线圈的电流进行微分，并根据电流的微分结果调整斜率的斜率。

公开(公告)号：US08203817B2

公开(公告)日：2012-06-19

申请号：US12369907

申请日：2009-02-12

申请人： Morihito Hasegawa ,  Hidenobu Ito ,  Kwok Fai Hui ,  Toshihiko Kasai ,  Katsuyuki Yasukouchi

发明人： Morihito Hasegawa ,  Hidenobu Ito ,  Kwok Fai Hui ,  Toshihiko Kasai ,  Katsuyuki Yasukouchi

IPC分类号： H02H9/08

摘要： A power supply circuit includes an output transistor including a source coupled to power supply voltage, and a drain from which output voltage is outputted; a first error amplifier powered by the power supply voltage and outputting a signal based on a potential difference between the output voltage and a reference voltage; a buffer transistor including a gate coupled to the output of the first error amplifier, and a source coupled via a constant current source to the power supply voltage and coupled to a gate of the output transistor; a current detection transistor coupled to the output transistor such that a gate and source are shared; and an overcurrent protection circuit configured to limit the drain current of the buffer transistor based on the increase of the drain current of the current detection transistor and thereby control the output current of the output transistor.

公开(公告)号：US20090184699A1

公开(公告)日：2009-07-23

申请号：US12354413

申请日：2009-01-15

申请人： Masahiro Natsume ,  Katsuyuki Yasukouchi

发明人： Masahiro Natsume ,  Katsuyuki Yasukouchi

IPC分类号： G05F1/10

CPC分类号： H02M3/158 ,  H02M2001/0045 ,  H02M2001/007 ,  H02M2001/009

摘要： A power supply apparatus is described that includes a first switch, a second switch, a first comparator, a signal generator and a controller. The first switch is provided between an inductor and a terminal having a reference voltage. The second switch is provided between the inductor and an output terminal. The first comparator compares an input voltage and a first comparison voltage. The signal generator outputs a frequency signal based on an output of the first comparator. The first controller controls current flowing into the inductor by controlling the first switch and the second switch based on the output of the signal generator.

摘要翻译： 描述了一种电源装置，其包括第一开关，第二开关，第一比较器，信号发生器和控制器。 第一开关设置在电感器和具有参考电压的端子之间。 第二开关设置在电感器和输出端子之间。 第一比较器比较输入电压和第一比较电压。 信号发生器基于第一比较器的输出输出频率信号。 第一控制器通过基于信号发生器的输出来控制第一开关和第二开关来控制流入电感器的电流。