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1. 发明申请

US20120126873A1 CONSTANT CURRENT CIRCUIT AND REFERENCE VOLTAGE CIRCUIT 有权
标题翻译：恒定电流电路和参考电压电路
公开(公告)号：US20120126873A1
公开(公告)日：2012-05-24
申请号：US13292451
申请日：2011-11-09
申请人： Yuji Kobayashi , Takashi Imura , Masakazu Sugiura , Atsushi Igarashi
发明人： Yuji Kobayashi , Takashi Imura , Masakazu Sugiura , Atsushi Igarashi
IPC分类号： H03L5/00
CPC分类号： G05F3/26 , G05F3/242
摘要： Provided is a constant current circuit and a reference voltage circuit with improved line regulation without needing a start-up circuit. The constant current circuit includes: a constant current generation circuit including NMOS transistors and a resistor; a current mirror circuit including a pair of depletion mode NMOS transistors, for allowing a current of the constant current generation circuit to flow; and a feedback circuit for maintaining constant voltages of source terminals of the pair of depletion mode NMOS transistors.
摘要翻译：提供了一种具有改进的线路调节的恒流电路和参考电压电路，而不需要启动电路。恒流电路包括：包括NMOS晶体管和电阻器的恒流产生电路; 包括一对耗尽型NMOS晶体管的电流镜电路，用于使恒流产生电路的电流流动; 以及用于维持该对耗尽型NMOS晶体管的源极的恒定电压的反馈电路。

2. 发明授权

US08476967B2 Constant current circuit and reference voltage circuit 有权
标题翻译：恒流电路和参考电压电路
公开(公告)号：US08476967B2
公开(公告)日：2013-07-02
申请号：US13292451
申请日：2011-11-09
申请人： Yuji Kobayashi , Takashi Imura , Masakazu Sugiura , Atsushi Igarashi
发明人： Yuji Kobayashi , Takashi Imura , Masakazu Sugiura , Atsushi Igarashi
IPC分类号： G05F1/575
CPC分类号： G05F3/26 , G05F3/242
摘要： Provided is a constant current circuit and a reference voltage circuit with improved line regulation without needing a start-up circuit. The constant current circuit includes: a constant current generation circuit including NMOS transistors and a resistor; a current mirror circuit including a pair of depletion mode NMOS transistors, for allowing a current of the constant current generation circuit to flow; and a feedback circuit for maintaining constant voltages of source terminals of the pair of depletion mode NMOS transistors.
摘要翻译：提供了一种具有改进的线路调节的恒流电路和参考电压电路，而不需要启动电路。恒流电路包括：包括NMOS晶体管和电阻器的恒流产生电路; 包括一对耗尽型NMOS晶体管的电流镜电路，用于使恒流产生电路的电流流动; 以及用于维持该对耗尽型NMOS晶体管的源极的恒定电压的反馈电路。

3. 发明申请

US20100321845A1 OVERHEAT PROTECTION CIRCUIT AND POWER SUPPLY INTEGRATED CIRCUIT 有权
标题翻译：超声波保护电路和电源集成电路
公开(公告)号：US20100321845A1
公开(公告)日：2010-12-23
申请号：US12790070
申请日：2010-05-28
申请人： Takashi Imura , Takao Nakashimo , Masakazu Sugiura , Atsushi Igarashi , Masahiro Mitani
发明人： Takashi Imura , Takao Nakashimo , Masakazu Sugiura , Atsushi Igarashi , Masahiro Mitani
IPC分类号： H02H5/04
CPC分类号： G05F1/569
摘要： Provided is a power supply integrated circuit including an overheat protection circuit with high detection accuracy. The overheat protection circuit includes: a current generation circuit including: a first metal oxide semiconductor (MOS) transistor including a gate terminal and a drain terminal that are connected to each other, the first MOS transistor operating in a weak inversion region; a second MOS transistor including a gate terminal connected to the gate terminal of the first MOS transistor, the second MOS transistor having the same conductivity type as the first MOS transistor and operating in a weak inversion region; and a first resistive element connected to a source terminal of the second MOS transistor; and a comparator for comparing a reference voltage having positive temperature characteristics and a temperature voltage having negative temperature characteristics, which are obtained based on a current generated by the current generation circuit.
摘要翻译：提供了一种具有高检测精度的过热保护电路的电源集成电路。过热保护电路包括：电流产生电路，包括：第一金属氧化物半导体（MOS）晶体管，其包括彼此连接的栅极端子和漏极端子，所述第一MOS晶体管在弱反转区域中工作; 第二MOS晶体管，包括连接到第一MOS晶体管的栅极端子的栅极端子，第二MOS晶体管具有与第一MOS晶体管相同的导电类型并且在弱反转区域中操作; 以及连接到所述第二MOS晶体管的源极端子的第一电阻元件; 以及比较器，用于比较具有正温度特性的参考电压和具有负温度特性的温度电压，其基于由电流产生电路产生的电流获得。

4. 发明授权

US08451571B2 Overheat protection circuit and power supply integrated circuit 有权
标题翻译：过热保护电路和电源集成电路
公开(公告)号：US08451571B2
公开(公告)日：2013-05-28
申请号：US12790070
申请日：2010-05-28
申请人： Takashi Imura , Takao Nakashimo , Masakazu Sugiura , Atsushi Igarashi , Masahiro Mitani
发明人： Takashi Imura , Takao Nakashimo , Masakazu Sugiura , Atsushi Igarashi , Masahiro Mitani
IPC分类号： H02H3/00
CPC分类号： G05F1/569
摘要： Provided is a power supply integrated circuit including an overheat protection circuit with high detection accuracy. The overheat protection circuit includes: a current generation circuit including: a first metal oxide semiconductor (MOS) transistor including a gate terminal and a drain terminal that are connected to each other, the first MOS transistor operating in a weak inversion region; a second MOS transistor including a gate terminal connected to the gate terminal of the first MOS transistor, the second MOS transistor having the same conductivity type as the first MOS transistor and operating in a weak inversion region; and a first resistive element connected to a source terminal of the second MOS transistor; and a comparator for comparing a reference voltage having positive temperature characteristics and a temperature voltage having negative temperature characteristics, which are obtained based on a current generated by the current generation circuit.
摘要翻译：提供了一种具有高检测精度的过热保护电路的电源集成电路。过热保护电路包括：电流产生电路，包括：第一金属氧化物半导体（MOS）晶体管，其包括彼此连接的栅极端子和漏极端子，所述第一MOS晶体管在弱反转区域中工作; 第二MOS晶体管，包括连接到第一MOS晶体管的栅极端子的栅极端子，第二MOS晶体管具有与第一MOS晶体管相同的导电类型并且在弱反转区域中操作; 以及连接到所述第二MOS晶体管的源极端子的第一电阻元件; 以及比较器，用于比较具有正温度特性的参考电压和具有负温度特性的温度电压，其基于由电流产生电路产生的电流获得。

5. 发明授权

US08436603B2 Voltage regulator operable to switch between a two-stage structure operation and a three-stage structure operation 有权
标题翻译：电压调节器可操作以在两级结构操作和三级结构操作之间切换
公开(公告)号：US08436603B2
公开(公告)日：2013-05-07
申请号：US12888899
申请日：2010-09-23
申请人： Takashi Imura
发明人： Takashi Imura
IPC分类号： G05F3/04 , G05F3/08 , G05F3/16 , G05F3/20
CPC分类号： G05F1/565 , H03F2200/555 , H03F2203/45244 , H03F2203/45366 , H03F2203/45466 , H03F2203/45506 , H03F2203/45618 , H03F2203/45648
摘要： Provided is a voltage regulator having a structure in which an output terminal of a first differential amplifier circuit is connected to a second differential amplifier circuit to control an output transistor by the second differential amplifier circuit. When low current consumption is required, the first differential amplifier circuit is suspended. When high-speed response is required, the first differential amplifier circuit is activated. The low-current consumption operation and the high-speed operation are switched with a minimum circuit area.
摘要翻译：提供一种电压调节器，其具有第一差分放大器电路的输出端子连接到第二差分放大器电路以通过第二差分放大器电路来控制输出晶体管的结构。当需要低电流消耗时，第一差分放大器电路被暂停。当需要高速响应时，第一个差分放大器电路被激活。低电流消耗操作和高速操作以最小电路面积切换。

6. 发明申请

US20110074496A1 REFERENCE VOLTAGE CIRCUIT 有权
标题翻译：参考电压电路
公开(公告)号：US20110074496A1
公开(公告)日：2011-03-31
申请号：US12888799
申请日：2010-09-23
申请人： Hideo Yoshino , Takashi Imura
发明人： Hideo Yoshino , Takashi Imura
IPC分类号： G05F3/02
CPC分类号： G05F3/242
摘要： Provided is a reference voltage circuit in which a temperature characteristic of a reference voltage is excellent and a circuit scale is small. In the reference voltage circuit, for example, a temperature correction circuit separated from the reference voltage circuit is not used and a difference voltage between threshold voltages of two E-type NMOS transistors (14 and 15) is added to a threshold voltage of a D-type NMOS transistor to generate a reference voltage (Vref). Therefore, the influence of the D-type NMOS transistor on the reference voltage (Vref), which is a degradation factor of the temperature characteristic of the reference voltage (Vref), may be reduced to suppress a change in tilt and curve of the reference voltage (Vref) with respect to a temperature.
摘要翻译：提供了一种参考电压电路，其中参考电压的温度特性优异且电路规模小。在参考电压电路中，例如，不使用与参考电压电路分离的温度校正电路，并且将两个E型NMOS晶体管（14和15）的阈值电压之间的差分电压加到D的阈值电压型NMOS晶体管，以产生参考电压（Vref）。因此，可以减小D型NMOS晶体管对作为参考电压（Vref）的温度特性的劣化因子的参考电压（Vref）的影响，以抑制参考电压的倾斜和曲线的变化电压（Vref）相对于温度。

7. 发明申请

US20100201331A1 Voltage regulator 有权
标题翻译：电压调节器
公开(公告)号：US20100201331A1
公开(公告)日：2010-08-12
申请号：US12703454
申请日：2010-02-10
申请人： Takashi Imura
发明人： Takashi Imura
IPC分类号： H02J3/12
CPC分类号： G05F1/56
摘要： To provide a voltage regulator having improved response characteristics in case of overshoot. The voltage regulator includes: a transistor (303) for detecting an overshoot at an output terminal; and a current mirror circuit connected to the transistor (303). If the transistor (303) detects the overshoot, a control transistor (16) is turned ON to discharge a voltage of the output terminal.
摘要翻译：提供一种在过冲情况下具有改进的响应特性的电压调节器。电压调节器包括：用于检测输出端子处的过冲的晶体管（303）; 以及连接到晶体管（303）的电流镜电路。如果晶体管（303）检测到过冲，则控制晶体管（16）导通以放电输出端子的电压。

8. 发明申请

US20090045870A1 Reference voltage circuit 有权
标题翻译：参考电压电路
公开(公告)号：US20090045870A1
公开(公告)日：2009-02-19
申请号：US12228805
申请日：2008-08-15
申请人： Takashi Imura
发明人： Takashi Imura
IPC分类号： G05F1/10
CPC分类号： G05F1/56
摘要： Provided is a reference voltage circuit whose power supply rejection ratio is large even in a case where a power supply voltage is low. Even in a case where the power supply voltage of a power supply terminal (10) becomes lower and thus an NMOS transistor (71) operates in non-saturation to reduce an output resistance (ro71) of the NMOS transistor (71), when a gain (Ao) of a differential amplifier circuit (60) is large, the power supply rejection ratio (PSRRLF) is also large. Therefore, even when a minimum operating voltage of the reference voltage circuit is low, the power supply rejection ratio (PSRRLF) can be made larger. In other words, since the gain (Ao) of the differential amplifier circuit (60) contributes to the power supply rejection ratio (PSRRLF), when the gain (Ao) of the differential amplifier circuit (60) increases, the power supply rejection ratio (PSRRLF) also becomes larger by the increase.
摘要翻译：提供了即使在电源电压低的情况下电源抑制比大的基准电压电路。即使在电源端子（10）的电源电压变低的情况下，NMOS晶体管（71）工作在非饱和状态，以降低NMOS晶体管（71）的输出电阻（ro71），当差分放大电路（60）的增益（Ao）大，电源抑制比（PSRRLF）也大。因此，即使基准电压电路的最小工作电压低，也可以使电源抑制比（PSRRLF）更大。换句话说，由于差分放大电路（60）的增益（Ao）有助于电源抑制比（PSRRLF），当差分放大电路（60）的增益（Ao）增加时，电源抑制比（PSRRLF）也随着增加而变大。

9. 发明授权

US09110487B2 Voltage regulator 有权
标题翻译：电压调节器
公开(公告)号：US09110487B2
公开(公告)日：2015-08-18
申请号：US13462440
申请日：2012-05-02
申请人： Kaoru Sakaguchi , Takashi Imura
发明人： Kaoru Sakaguchi , Takashi Imura
IPC分类号： G05F3/16 , G05F1/573
CPC分类号： G05F1/573
摘要： Provided is a voltage regulator including an overcurrent protection circuit, which does not need a test circuit. The voltage regulator has a configuration in which a reference voltage circuit includes an element that determines a reference voltage and an overcurrent protection circuit includes an element that determines a maximum output current, the element of the reference voltage circuit and the element of the overcurrent protection circuit having the same characteristics. Accordingly, there is a correlation between an output voltage before trimming and the maximum output current for overcurrent protection. Thus, a maximum output current before trimming can be estimated without performing evaluation by a test circuit.
摘要翻译：提供了包括不需要测试电路的过电流保护电路的电压调节器。电压调节器具有这样的配置，其中参考电压电路包括确定参考电压的元件，并且过电流保护电路包括确定最大输出电流的元件，参考电压电路的元件和过电流保护电路的元件具有相同的特征。因此，在修整前的输出电压与过电流保护的最大输出电流之间存在相关性。因此，可以在不进行测试电路的评估的情况下估计修整之前的最大输出电流。

10. 发明授权

US08502513B2 Voltage regulator 有权
标题翻译：电压调节器
公开(公告)号：US08502513B2
公开(公告)日：2013-08-06
申请号：US12653535
申请日：2009-12-15
申请人： Takashi Imura
发明人： Takashi Imura
IPC分类号： G05F1/40 , H02H7/00
CPC分类号： G05F1/56
摘要： A voltage regulator has an output transistor that outputs an output voltage. A first circuit controls a control terminal voltage to increase the output voltage when an undershoot has occurred in the output voltage. A second circuit controls the control terminal voltage to prevent an output current from exceeding an overcurrent when the output current becomes the overcurrent, and disables the first circuit when the output current is prevented from exceeding the overcurrent so that the first circuit does not control the control terminal voltage to increase the output voltage.
摘要翻译：电压调节器具有输出输出电压的输出晶体管。当在输出电压中发生下冲时，第一电路控制控制端电压以增加输出电压。当输出电流变为过电流时，第二电路控制控制端电压以防止输出电流超过过电流，并且当防止输出电流超过过电流时禁止第一电路，使得第一电路不控制控制端电压增加输出电压。

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