公开(公告)号：US07764056B2

公开(公告)日：2010-07-27

申请号：US12477434

申请日：2009-06-03

申请人： Takao Nakashimo

发明人： Takao Nakashimo

IPC分类号： G05F1/00

CPC分类号： G05F1/569

摘要： Provided is a voltage control circuit which suppresses a calorific value that generates when short-circuit fault occurs even if a voltage value of an input voltage is large. At the time of short-circuit fault, an additional control voltage Va whose voltage value becomes larger when the voltage value of the input voltage Vin is larger is input to the voltage control p-channel MOS transistor (110) from a transistor control MOS transistor (160), to thereby increase resistance of the voltage control p-channel MOS transistor (110) to suppress a short-circuit current. As a result, when the input voltage Vin is larger, the current value of a holding current or a calorific value after the short-circuit protecting operation has been conducted can be suppressed.

摘要翻译： 提供一种电压控制电路，其抑制即使输入电压的电压值大时发生短路故障时产生的发热量。 在短路故障时，当输入电压Vin的电压值较大时，其电压值变大的附加控制电压Va从晶体管控制MOS晶体管输入到电压控制p沟道MOS晶体管（110） （160），从而增加电压控制p沟道MOS晶体管（110）的电阻以抑制短路电流。 结果，当输入电压Vin较大时，可以抑制进行短路保护动作之后的保持电流或发热量的电流值。

公开(公告)号：US20090243567A1

公开(公告)日：2009-10-01

申请号：US12477434

申请日：2009-06-03

申请人： Takao Nakashimo

发明人： Takao Nakashimo

IPC分类号： G05F1/10

CPC分类号： G05F1/569

摘要： Provided is a voltage control circuit which suppresses a calorific value that generates when short-circuit fault occurs even if a voltage value of an input voltage is large. At the time of short-circuit fault, an additional control voltage Va whose voltage value becomes larger when the voltage value of the input voltage Vin is larger is input to the voltage control p-channel MOS transistor (110) from a transistor control MOS transistor (160), to thereby increase resistance of the voltage control p-channel MOS transistor (110) to suppress a short-circuit current. As a result, when the input voltage Vin is larger, the current value of a holding current or a calorific value after the short-circuit protecting operation has been conducted can be suppressed.

摘要翻译： 提供一种电压控制电路，其抑制即使输入电压的电压值大时发生短路故障时产生的发热量。 在短路故障时，当输入电压Vin的电压值较大时，其电压值变大的附加控制电压Va从晶体管控制MOS晶体管输入到电压控制p沟道MOS晶体管（110） （160），从而增加电压控制p沟道MOS晶体管（110）的电阻以抑制短路电流。 结果，当输入电压Vin较大时，可以抑制进行短路保护动作之后的保持电流或发热量的电流值。

公开(公告)号：US20070188142A1

公开(公告)日：2007-08-16

申请号：US11651736

申请日：2007-01-10

申请人： Takao Nakashimo

发明人： Takao Nakashimo

IPC分类号： H02J7/00

CPC分类号： H02J7/0031 ,  H02J7/0086

摘要： Provided is a charging and discharging control circuit in which a delay circuit is built in an over discharge detector circuit, an over-charge detector circuit, or the like, and a delay time of the detector circuit can be changed from an external without adding a control terminal, thereby reducing a test time of the detector circuit. A voltage detector circuit is disposed between a power supply terminal and a power supply voltage detection terminal of the charging and discharging control circuit, and the voltage detector circuit detects a specified voltage or higher, to thereby shorten the delay time of the internal control circuit.

摘要翻译： 提供了一种充放电控制电路，其中延迟电路内置在过放电检测器电路，过充电检测器电路等中，并且检测器电路的延迟时间可以从外部改变而不添加 控制端子，从而减少检测电路的测试时间。 在充放电控制电路的电源端子和电源电压检测端子之间配置电压检测电路，电压检测电路检测规定电压以上，从而缩短内部控制电路的延迟时间。

公开(公告)号：US20120194947A1

公开(公告)日：2012-08-02

申请号：US13355746

申请日：2012-01-23

申请人： Takao Nakashimo

发明人： Takao Nakashimo

IPC分类号： H02H7/20

CPC分类号： G05F1/573

摘要： Provided is a voltage regulator capable of providing overcurrent protection without increasing current consumption even when an output current increases. An overcurrent protection circuit includes: a sense resistor provided to a drain of an output transistor, for sensing an output current; an offset comparator for comparing voltages at both terminals of the sense resistor; and a first transistor including a gate connected to an output of the offset comparator. A current path between a detection transistor and the sense resistor is eliminated, and hence a current for detection does not increase even when an output current is large.

摘要翻译： 提供了即使输出电流增加也能够提供过电流保护而不增加电流消耗的电压调节器。 过电流保护电路包括：检测电阻器，其设置在输出晶体管的漏极上，用于感测输出电流; 用于比较检测电阻器两端的电压的偏移比较器; 以及第一晶体管，其包括连接到偏移比较器的输出的栅极。 消除了检测晶体管和检测电阻之间的电流路径，因此即使输出电流较大，检测用电流也不会增加。

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。

公开(公告)号：US06720754B2

公开(公告)日：2004-04-13

申请号：US10287071

申请日：2002-11-04

申请人： Takao Nakashimo

发明人： Takao Nakashimo

IPC分类号： G05F140

CPC分类号： G05F1/575

摘要： There is provided a voltage regulator in which a ratio of a maximum current and a short circuit current is adjusted so that the maximum current is greatly increased and a short circuit current is made small. A first current limiting circuit for limiting a current value of an output voltage terminal is composed of P-channel MOS transistors (2, 4), an N-channel MOS transistor (3), and resistors (21 and 22). A second current limiting circuit for detecting a reduction in voltage of the output voltage terminal and limiting a current value of the output voltage terminal is composed of P-channel MOS transistors (2, 4), an N-channel MOS transistor (3), and resistors (20, 21, and 22). By using these circuits, the maximum current can be greatly increased and the short circuit current can be reduced.

摘要翻译： 提供了一种电压调节器，其中调节最大电流和短路电流的比率，使得最大电流大大增加并且使短路电流变小。 用于限制输出电压端子的电流值的第一限流电路由P沟道MOS晶体管（2,4），N沟道MOS晶体管（3）和电阻（21和22）组成。 用于检测输出电压端子的电压降低并限制输出电压端子的电流值的第二限流电路由P沟道MOS晶体管（2,4），N沟道MOS晶体管（3）， 和电阻器（20,21和22）。 通过使用这些电路，可以大大提高最大电流，并且可以减小短路电流。

公开(公告)号：US20110074370A1

公开(公告)日：2011-03-31

申请号：US12891341

申请日：2010-09-27

申请人： Takashi Imura ,  Teruo Suzuki ,  Takao Nakashimo ,  Yotaro Nihei

发明人： Takashi Imura ,  Teruo Suzuki ,  Takao Nakashimo ,  Yotaro Nihei

IPC分类号： G05F1/573

CPC分类号： G05F1/573

摘要： Provided is a voltage regulator capable of setting an accurate short-circuit current. Used as a circuit for determining a current value of a short-circuit current of an overcurrent protection circuit is not a resistor for converting current into voltage but a circuit for controlling in the form of current, that is, a circuit of an N-channel depletion type transistor including a gate and a drain that are connected to each other and operating in a non-saturated state. The N-channel depletion type transistor has process fluctuations that are linked with those of a detection transistor, and hence an accurate short-circuit current may be set without trimming.

摘要翻译： 提供能够设定精确的短路电流的电压调节器。 用作确定过电流保护电路的短路电流的电流值的电路不是用于将电流转换为电压的电阻，而是用于以电流形式控制的电路，即，N沟道的电路 耗尽型晶体管，其包括彼此连接并在非饱和状态下工作的栅极和漏极。 N沟道耗尽型晶体管具有与检测晶体管相连的工艺波动，因此可以在不进行修整的情况下设定精确的短路电流。

公开(公告)号：US20090206807A1

公开(公告)日：2009-08-20

申请号：US12378185

申请日：2009-02-11

申请人： Takashi Imura ,  Takao Nakashimo

发明人： Takashi Imura ,  Takao Nakashimo

IPC分类号： G05F1/573

CPC分类号： G05F1/573

摘要： Provided is a voltage regulator including an overcurrent protection circuit, which is capable of enhancing accuracy of a limit current value and a short-circuit current value, and suppressing electric power loss when an overcurrent flows through an output transistor. The overcurrent protection circuit includes: an output current detection transistor controlled by an output voltage of an error amplifier circuit, for feeding a detection current; a detection resistor for generating a detection voltage based on the detection current; a second error amplifier circuit for amplifying a difference between a voltage set by a second reference voltage and a divided voltage, and the voltage of the detection resistor, and outputting the amplified difference; and an output current limiting circuit in which a gate thereof is controlled by an output of the second error amplifier circuit, for controlling a gate voltage of the output transistor. Further, the second reference voltage is supplied from a temperature detection circuit.

摘要翻译： 提供一种包括过电流保护电路的电压调节器，其能够提高极限电流值和短路电流值的精度，并且当过电流流过输出晶体管时抑制电力损耗。 过电流保护电路包括：输出电流检测晶体管，由误差放大器电路的输出电压控制，用于馈送检测电流; 检测电阻，用于根据检测电流产生检测电压; 第二误差放大器电路，用于放大由第二参考电压设定的电压与分压之间的差值和检测电阻器的电压，并输出放大的差值; 以及输出限流电路，其中栅极由第二误差放大器电路的输出控制，用于控制输出晶体管的栅极电压。 此外，第二参考电压由温度检测电路提供。

公开(公告)号：US06373227B1

公开(公告)日：2002-04-16

申请号：US09778458

申请日：2001-02-07

申请人： Takao Nakashimo

发明人： Takao Nakashimo

IPC分类号： H01M1046

摘要： In a charging and discharging control circuit that controls the charging and discharging operation of a secondary battery and a charging type power supply device for the secondary battery which includes the charging and discharging control circuit therein, there is provided a charging and discharging control circuit that enters a test mode where the delay time of the internal control circuit is shortened when a voltage equal to or higher than a regulated voltage is applied to the charger connection terminal of a charging type power supply device.

公开(公告)号：US08450986B2

公开(公告)日：2013-05-28

申请号：US12891341

申请日：2010-09-27

申请人： Takashi Imura ,  Teruo Suzuki ,  Takao Nakashimo ,  Yotaro Nihei

发明人： Takashi Imura ,  Teruo Suzuki ,  Takao Nakashimo ,  Yotaro Nihei

IPC分类号： G05F1/573

CPC分类号： G05F1/573

摘要： Provided is a voltage regulator capable of setting an accurate short-circuit current. Used as a circuit for determining a current value of a short-circuit current of an overcurrent protection circuit is not a resistor for converting current into voltage but a circuit for controlling in the form of current, that is, a circuit of an N-channel depletion type transistor including a gate and a drain that are connected to each other and operating in a non-saturated state. The N-channel depletion type transistor has process fluctuations that are linked with those of a detection transistor, and hence an accurate short-circuit current may be set without trimming.

摘要翻译： 提供能够设定精确的短路电流的电压调节器。 用作确定过电流保护电路的短路电流的电流值的电路不是用于将电流转换为电压的电阻，而是用于以电流形式控制的电路，即，N沟道的电路 耗尽型晶体管，其包括彼此连接并在非饱和状态下工作的栅极和漏极。 N沟道耗尽型晶体管具有与检测晶体管相连的工艺波动，因此可以在不进行修整的情况下设定精确的短路电流。