公开(公告)号：US08207789B2

公开(公告)日：2012-06-26

申请号：US13070151

申请日：2011-03-23

申请人： Toshiyuki Tsuzaki

发明人： Toshiyuki Tsuzaki

IPC分类号： H03F3/45

CPC分类号： H03F3/45179

摘要： Provided is a differential amplifier circuit with a small circuit size. When a differential voltage (Vinp−Vinn) is higher than a predetermined voltage, a PMOS transistor (4) is turned ON. At this time, a current source (12) is connected in parallel to a current source (11), and the current source (12) supplies a drive current to a differential amplifier circuit (10). In other words, the current sources (11 and 12), rather than only the current source (11), supply a total current (I11+I12) to the differential amplifier circuit (10) as the drive current. Accordingly, a slew rate of an output voltage (Vout) is increased. Two PMOS transistors and the current source (12) are simply required for controlling the slew rate of the output voltage (Vout), and hence the differential amplifier circuit (10) is small in circuit size.

摘要翻译： 提供具有小电路尺寸的差分放大器电路。 当差分电压（Vinp-Vinn）高于预定电压时，PMOS晶体管（4）导通。 此时，电流源（12）与电流源（11）并联连接，电流源（12）向差动放大电路（10）供给驱动电流。 换句话说，电流源（11和12）而不是仅电流源（11）向差分放大器电路（10）提供总电流（I11 + I12）作为驱动电流。 因此，输出电压（Vout）的转换速率增加。 仅需要两个PMOS晶体管和电流源（12）来控制输出电压（Vout）的转换速率，因此差分放大器电路（10）的电路尺寸小。

公开(公告)号：US08193861B2

公开(公告)日：2012-06-05

申请号：US12888884

申请日：2010-09-23

申请人： Toshiyuki Tsuzaki

发明人： Toshiyuki Tsuzaki

IPC分类号： H03F3/45

CPC分类号： H03F3/45192 ,  H03F3/3022 ,  H03F2203/45091 ,  H03F2203/45366 ,  H03F2203/45631

摘要： A Provided is a differential amplifier in which a current flowing into an output transistor may be adjusted to a constant value even when a voltage of a non-inverting input terminal changes. A current flowing through the differential amplifier circuit is controlled by a current source, a current value of which is changed depending on the voltage of the non-inverting input terminal.

摘要翻译： A提供了一种差分放大器，其中即使当非反相输入端子的电压改变时，流入输出晶体管的电流也可以被调节为恒定值。 流过差分放大器电路的电流由电流源控制，电流源根据非反相输入端子的电压而改变。

公开(公告)号：US08115539B2

公开(公告)日：2012-02-14

申请号：US12887862

申请日：2010-09-22

申请人： Toshiyuki Tsuzaki ,  Akira Takeda

发明人： Toshiyuki Tsuzaki ,  Akira Takeda

IPC分类号： H03F1/02

CPC分类号： H03F3/45968 ,  H03F3/45475 ,  H03F2203/45138 ,  H03F2203/45212

摘要： Provided is an operational amplifier capable of correcting an offset voltage of an element to be connected to an input terminal. The operational amplifier includes a main amplifier and an offset correction amplifier, which include input terminals connected in common. The main amplifier includes: a first transconductance amplifier for measurement; a second transconductance amplifier for offset correction; and a first capacitor connected to an input terminal of the second transconductance amplifier. The offset correction amplifier includes: a third transconductance amplifier for measurement; a fourth transconductance amplifier for offset correction; and a second capacitor connected to one input terminal of the fourth transconductance amplifier. An offset voltage adjustment circuit is provided to another input terminal of the fourth transconductance amplifier included in the offset correction amplifier.

摘要翻译： 提供了能够校正要连接到输入端子的元件的偏移电压的运算放大器。 运算放大器包括主放大器和偏移校正放大器，其包括共同连接的输入端子。 主放大器包括：用于测量的第一跨导放大器; 用于偏移校正的第二跨导放大器; 以及连接到第二跨导放大器的输入端的第一电容器。 偏移校正放大器包括：用于测量的第三跨导放大器; 用于偏移校正的第四跨导放大器; 以及连接到第四跨导放大器的一个输入端的第二电容器。 偏移电压调整电路被提供给包括在偏移校正放大器中的第四跨导放大器的另一输入端。

公开(公告)号：US20110234319A1

公开(公告)日：2011-09-29

申请号：US13070151

申请日：2011-03-23

申请人： Toshiyuki Tsuzaki

发明人： Toshiyuki Tsuzaki

IPC分类号： H03F3/45

CPC分类号： H03F3/45179

摘要： Provided is a differential amplifier circuit with a small circuit size. When a differential voltage (Vinp−Vinn) is higher than a predetermined voltage, a PMOS transistor (4) is turned ON. At this time, a current source (12) is connected in parallel to a current source (11), and the current source (12) supplies a drive current to a differential amplifier circuit (10). In other words, the current sources (11 and 12), rather than only the current source (11), supply a total current (I11+I12) to the differential amplifier circuit (10) as the drive current. Accordingly, a slew rate of an output voltage (Vout) is increased. Two PMOS transistors and the current source (12) are simply required for controlling the slew rate of the output voltage (Vout), and hence the differential amplifier circuit (10) is small in circuit size.

摘要翻译： 提供具有小电路尺寸的差分放大器电路。 当差分电压（Vinp-Vinn）高于预定电压时，PMOS晶体管（4）导通。 此时，电流源（12）与电流源（11）并联连接，电流源（12）向差动放大电路（10）供给驱动电流。 换句话说，电流源（11和12）而不是仅电流源（11）向差分放大器电路（10）提供总电流（I11 + I12）作为驱动电流。 因此，输出电压（Vout）的转换速率增加。 仅需要两个PMOS晶体管和电流源（12）来控制输出电压（Vout）的转换速率，因此差分放大器电路（10）的电路尺寸小。

公开(公告)号：US20080007239A1

公开(公告)日：2008-01-10

申请号：US11823089

申请日：2007-06-26

申请人： Toshiyuki Tsuzaki ,  Michiyasu Deguchi

发明人： Toshiyuki Tsuzaki ,  Michiyasu Deguchi

IPC分类号： G05F1/44

CPC分类号： H02M1/36 ,  H02M3/1588 ,  Y02B70/1466 ,  Y10S323/901 ,  Y10S323/908

摘要： Provided is a switching regulator for preventing generation of an inrush current flowing through a switching element of an output stage, which is provided in the switching regulator. A soft start control circuit (116) detects a current flowing through a PMOS transistor (104) serving as a switching element of an output stage. When the detected current is equal to or larger than a current limiting value for limiting the current flowing through the PMOS transistor (104), the soft start control circuit (116) controls the PMOS transistor (104) to be turned off. Accordingly, it is possible to prevent generation of the inrush current flowing through the PMOS transistor (104).

摘要翻译： 提供了一种用于防止产生流过开关调节器中的输出级的开关元件的浪涌电流的开关稳压器。 软启动控制电路（116）检测流过用作输出级的开关元件的PMOS晶体管（104）的电流。 当检测电流等于或大于限制流过PMOS晶体管（104）的电流的限流值时，软启动控制电路（116）控制PMOS晶体管（104）截止。 因此，可以防止流过PMOS晶体管（104）的涌入电流的产生。

公开(公告)号：US20110074507A1

公开(公告)日：2011-03-31

申请号：US12888884

申请日：2010-09-23

申请人： Toshiyuki Tsuzaki

发明人： Toshiyuki Tsuzaki

IPC分类号： H03F3/45

CPC分类号： H03F3/45192 ,  H03F3/3022 ,  H03F2203/45091 ,  H03F2203/45366 ,  H03F2203/45631

摘要： A Provided is a differential amplifier in which a current flowing into an output transistor may be adjusted to a constant value even when a voltage of a non-inverting input terminal changes. A current flowing through the differential amplifier circuit is controlled by a current source, a current value of which is changed depending on the voltage of the non-inverting input terminal.

摘要翻译： A提供了一种差分放大器，其中即使当非反相输入端子的电压改变时，流入输出晶体管的电流也可以被调节为恒定值。 流过差分放大器电路的电流由电流源控制，电流源根据非反相输入端子的电压而改变。

公开(公告)号：US07598719B2

公开(公告)日：2009-10-06

申请号：US11633296

申请日：2006-12-04

申请人： Toshiyuki Tsuzaki

发明人： Toshiyuki Tsuzaki

IPC分类号： G05F1/575

CPC分类号： H02M3/156

摘要： Provided is a switching regulator having an improved power supply voltage variation response characteristic while maintaining the stability of an output voltage to oscillation. An output resistance of an error amplifier is adjusted by a power supply voltage variation response improving circuit to allow a gain of the error amplifier to change.

摘要翻译： 提供一种开关调节器，其具有改善的电源电压变化响应特性，同时保持输出电压稳定的振荡。 通过电源电压变化响应改善电路来调整误差放大器的输出电阻，以允许误差放大器的增益改变。

公开(公告)号：US20070132439A1

公开(公告)日：2007-06-14

申请号：US11633296

申请日：2006-12-04

申请人： Toshiyuki Tsuzaki

发明人： Toshiyuki Tsuzaki

IPC分类号： G05F1/00

CPC分类号： H02M3/156

摘要： Provided is a switching regulator having an improved power supply voltage variation response characteristic while maintaining the stability of an output voltage to oscillation. An output resistance of an error amplifier is adjusted by a power supply voltage variation response improving circuit to allow a gain of the error amplifier to change.

摘要翻译： 提供一种开关调节器，其具有改善的电源电压变化响应特性，同时保持输出电压稳定的振荡。 通过电源电压变化响应改善电路调整误差放大器的输出电阻，以允许误差放大器的增益改变。

公开(公告)号：US20110074503A1

公开(公告)日：2011-03-31

申请号：US12887862

申请日：2010-09-22

申请人： Toshiyuki Tsuzaki ,  Akira Takeda

发明人： Toshiyuki Tsuzaki ,  Akira Takeda

IPC分类号： H03F3/68

CPC分类号： H03F3/45968 ,  H03F3/45475 ,  H03F2203/45138 ,  H03F2203/45212

摘要： Provided is an operational amplifier capable of correcting an offset voltage of an element to be connected to an input terminal. The operational amplifier includes a main amplifier and an offset correction amplifier, which include input terminals connected in common. The main amplifier includes: a first transconductance amplifier for measurement; a second transconductance amplifier for offset correction; and a first capacitor connected to an input terminal of the second transconductance amplifier. The offset correction amplifier includes: a third transconductance amplifier for measurement; a fourth transconductance amplifier for offset correction; and a second capacitor connected to one input terminal of the fourth transconductance amplifier. An offset voltage adjustment circuit is provided to another input terminal of the fourth transconductance amplifier included in the offset correction amplifier.

摘要翻译： 提供了能够校正要连接到输入端子的元件的偏移电压的运算放大器。 运算放大器包括主放大器和偏移校正放大器，其包括共同连接的输入端子。 主放大器包括：用于测量的第一跨导放大器; 用于偏移校正的第二跨导放大器; 以及连接到第二跨导放大器的输入端的第一电容器。 偏移校正放大器包括：用于测量的第三跨导放大器; 用于偏移校正的第四跨导放大器; 以及连接到第四跨导放大器的一个输入端的第二电容器。 偏移电压调整电路被提供给包括在偏移校正放大器中的第四跨导放大器的另一输入端。

公开(公告)号：US07800433B2

公开(公告)日：2010-09-21

申请号：US12342232

申请日：2008-12-23

申请人： Kiyoshi Yoshikawa ,  Fumiyasu Utsunomiya ,  Toshiyuki Tsuzaki ,  Hiroyuki Masuko ,  Osamu Uehara ,  Hiroki Wake ,  Michiyasu Deguchi

发明人： Kiyoshi Yoshikawa ,  Fumiyasu Utsunomiya ,  Toshiyuki Tsuzaki ,  Hiroyuki Masuko ,  Osamu Uehara ,  Hiroki Wake ,  Michiyasu Deguchi

IPC分类号： H02M1/10

CPC分类号： H03K17/693 ,  H03K19/017545

摘要： Provided is a power supply switching circuit capable of efficiently supplying a desired voltage among a plurality of voltages to a load. In the case of a P-type semiconductor substrate, N-type MOS transistors are provided between a load and an AC adapter and between the load and a battery, and hence no parasitic diode exists between the load and the AC adapter or the battery, resulting in no current path due to the parasitic diode. Thus, when the AC adapter and the battery are connected to the power supply switching circuit, the N-type MOS transistor is turned off, whereby the current path between the battery and the load is cut off completely and the N-type MOS transistor is turned on. Accordingly, the battery cannot supply a voltage to the load while only the AC adapter can supply a voltage to the load.

摘要翻译： 提供一种能够在多个电压中有效地向负载提供期望电压的电源开关电路。 在P型半导体衬底的情况下，N型MOS晶体管设置在负载和AC适配器之间以及负载和电池之间，因此在负载和AC适配器或电池之间不存在寄生二极管， 由于寄生二极管导致没有电流路径。 因此，当AC适配器和电池连接到电源开关电路时，N型MOS晶体管截止，电池和负载之间的电流路径被完全切断，N型MOS晶体管是 打开。 因此，只有AC适配器可以向负载提供电压，电池不能向负载提供电压。