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公开(公告)号：US20220075403A1
公开(公告)日：2022-03-10
申请号：US17458048
申请日：2021-08-26
申请人： Kohei SAKURAI , Shinichiro MAKI
发明人： Kohei SAKURAI , Shinichiro MAKI
摘要： A power supply semiconductor IC includes: an output transistor connected between a voltage-input terminal and a voltage-output terminal; a control circuit that controls the output transistor based on a feedback voltage of an output voltage; a current-limit circuit that limits an output current of the output transistor such that the output current is not equal to or greater than a current limit; a first transistor constituting a current-mirror circuit with the output transistor; a short-circuit-fault detection circuit that detects a short circuit of the voltage-output terminal based on a voltage across a resistor connected in series to the first transistor; and a first output terminal that outputs a detection result of the short-circuit-fault detection circuit. The current limit is within a detection range of the short-circuit-fault detection circuit. The short-circuit-fault detection circuit detects a short circuit of the voltage-output terminal even while the current limit circuit limits the output current.
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公开(公告)号：US20220075004A1
公开(公告)日：2022-03-10
申请号：US17458113
申请日：2021-08-26
申请人： Kohei SAKURAI , Shinichiro MAKI
发明人： Kohei SAKURAI , Shinichiro MAKI
IPC分类号： G01R31/52 , H03K3/037 , H03K5/24 , G05F1/56 , G01R19/165
摘要： A power supply semiconductor integrated circuit includes an output transistor, a control circuit, a first-fault detection circuit, a second-fault detection circuit, a delay circuit, and a latch circuit. The output transistor is connected between a voltage-input terminal to which a DC voltage is input and a voltage-output terminal. The control circuit controls the output transistor. The first-fault detection circuit detects a first fault. The second-fault detection circuit detects a second fault different from the first fault. The delay circuit delays an output of the first-fault detection circuit and an output of the second-fault detection circuit. The latch circuit captures and holds an output of the delay circuit. The delay circuit includes: a constant current source for charging a delay capacitor; a discharge switch for discharging the delay capacitor; and a voltage comparator circuit that compares a charge voltage across the delay capacitor and a predetermined voltage.
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公开(公告)号：US20210191440A1
公开(公告)日：2021-06-24
申请号：US17117705
申请日：2020-12-10
申请人： Yoichi TAKANO , Shinichiro MAKI
发明人： Yoichi TAKANO , Shinichiro MAKI
摘要： Disclosed is a semiconductor integrated circuit for a regulator, including: a voltage control transistor connected between a voltage input terminal to which a DC voltage is input and an output terminal; a control circuit that controls the voltage control transistor according to a feedback voltage of an output; a first transistor which is provided in parallel with the voltage control transistor and to which an electric current in a proportional reduction from an electric current flowing to the voltage control transistor flows; a first comparison circuit that determines which of the electric current flowing to the first transistor and a predetermined current value is larger; and a first output terminal for outputting the determination result. An output of the first comparison circuit is inverted in response to the flowing to the first transistor of the electric current smaller than a preset rotation lock detection current value.
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4.发明申请公开(公告)号：US20190302821A1
公开(公告)日：2019-10-03
申请号：US16352765
申请日：2019-03-13
摘要： A semiconductor apparatus for power supply control includes the following. A voltage control transistor is connected between a voltage input terminal and an output terminal. A control circuit controls the voltage control transistor according to an output feedback voltage. A first external terminal is supplied with an output control signal to control output voltage is input. The control circuit further includes the following. A first error amplifier outputs a voltage according to an electric potential difference between a voltage divided by a first voltage dividing circuit which divides the output voltage of the output terminal and a predetermined reference voltage. An output changing circuit displaces the reference voltage input in the first error amplifier or the voltage divided by the first voltage dividing circuit according to a voltage input in the first external terminal to change the output voltage to a voltage according to the output control signal.
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公开(公告)号：US20130099771A1
公开(公告)日：2013-04-25
申请号：US13658958
申请日：2012-10-24
申请人： Akihiro TERADA , Shinichiro MAKI
发明人： Akihiro TERADA , Shinichiro MAKI
IPC分类号： G05F3/16
CPC分类号： G01R19/16566
摘要： Disclosed is a low voltage detection circuit. The low voltage detection circuit includes, a voltage comparison circuit, an output stage, an electric current circuit, and a judgment circuit. When the voltage comparison circuit detects that the voltage of the detection target is a predetermined voltage value or less, an output state of the output stage is promptly changed. When the voltage comparison circuit detects that the voltage of the detection target is a predetermined voltage value or more, the output state of the output stage is changed after a delay time obtained by the electric current circuit.
摘要翻译： 公开了一种低电压检测电路。 低电压检测电路包括电压比较电路，输出级，电流电路和判断电路。 当电压比较电路检测到检测对象的电压为规定的电压值以下时，输出级的输出状态迅速变化。 当电压比较电路检测到检测对象的电压为预定电压值以上时，输出级的输出状态在由电流电路获得的延迟时间之后变化。
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公开(公告)号：US20190146535A1
公开(公告)日：2019-05-16
申请号：US16186099
申请日：2018-11-09
摘要： A semiconductor integrated circuit for a regulator includes an output controlling transistor, a controller circuit, a breeder resister and a current limiting resistor. The output controlling transistor is connected between an output terminal and a voltage input terminal. The breeder resister is connected between the output terminal and a constant potential point and generates the feedback voltage. The current limiting resistor is connected with the breeder resistor between the output terminal and the constant potential point.
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公开(公告)号：US20170063232A1
公开(公告)日：2017-03-02
申请号：US15238809
申请日：2016-08-17
申请人： Yoichi TAKANO , Shinichiro MAKI
发明人： Yoichi TAKANO , Shinichiro MAKI
摘要： A semiconductor integrated circuit for a regulator includes the following: a voltage controlling transistor; a controlling circuit; a first and second transistor; a first external terminal to connect a current voltage converting element; a first and second voltage comparing circuit which compares a converted voltage with a predetermined comparison voltage and determines which is large or small; and a first and second output terminal which externally outputs a result of comparison by the first and second voltage comparing circuit, respectively. When a current larger than a predetermined open-circuit abnormality detecting current value flows in the first transistor, output of the first voltage comparing circuit is inverted. When a current larger than a predetermined short-circuit abnormality detecting current value flows in the second transistor, output of the second voltage comparing circuit is inverted.
摘要翻译： 用于调节器的半导体集成电路包括：电压控制晶体管; 控制电路; 第一和第二晶体管; 连接电流电压转换元件的第一外部端子; 第一和第二电压比较电路，其将转换的电压与预定的比较电压进行比较，并确定哪个大或小; 以及分别由第一和第二电压比较电路输出比较结果的第一和第二输出端子。 当大于预定的开路异常检测电流值的电流流过第一晶体管时，第一电压比较电路的输出反相。 当大于预定短路异常检测电流值的电流流过第二晶体管时，第二电压比较电路的输出反转。
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8.发明申请公开(公告)号：US20210018947A1
公开(公告)日：2021-01-21
申请号：US17061370
申请日：2020-10-01
摘要： A power supply control apparatus includes a voltage control transistor connected between a DC voltage input terminal and an output terminal; a control circuit controlling the voltage control transistor according to an output feedback voltage; and a first external terminal receiving an output control signal to control an output voltage. The control circuit includes a first error amplifier outputting a voltage according to an electric potential difference between a voltage divided by a first voltage dividing circuit which divides the output voltage of the output terminal and a predetermined reference voltage; and an output changing circuit including a second error amplifier receiving a voltage input in the first external terminal, a transistor having a control terminal receiving the output of the second error amplifier, and a current mirror circuit connected to the voltage input terminal which transfers an electric current flowing in the transistor. The output changing circuit displaces the divided voltage according to a voltage input at the first external terminal to change the output voltage according to the output control signal.
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9.发明申请公开(公告)号：US20210018946A1
公开(公告)日：2021-01-21
申请号：US17061281
申请日：2020-10-01
摘要： A power supply control apparatus includes a voltage control transistor connected between a DC voltage input terminal and an output terminal; a control circuit which controls the voltage control transistor according to an output feedback voltage; and a first external terminal receiving an output control signal to control an output voltage. The control circuit includes a first error amplifier outputting a voltage according to an electric potential difference between a voltage divided by a first voltage dividing circuit which divides the output voltage of the output terminal and a predetermined reference voltage; and an output changing circuit including a second error amplifier receiving a voltage input in the first external terminal, a transistor having a control terminal receiving the output of the second error amplifier, and a current mirror circuit connected to the voltage input terminal which transfers an electric current flowing in the transistor. The current mirror circuit is connected to a node from which the divided voltage is taken out, and the output changing circuit displaces the divided voltage according to a voltage input in the first external terminal to change the output voltage according to the output control signal.
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10.发明申请公开(公告)号：US20200371538A1
公开(公告)日：2020-11-26
申请号：US16861340
申请日：2020-04-29
摘要： A power control semiconductor device includes: a voltage control transistor connected between an input terminal and an output terminal; a control circuit that controls the voltage control transistor in accordance with a voltage of the output terminal; and an external terminal that controls an output voltage externally. The control circuit includes: a first divider which has resistor elements connected in series to the output terminal and which divides the output voltage of the output terminal; a first error amplifier that outputs a voltage corresponding to a potential difference between a predetermined reference voltage and a voltage divided by the first divider; and an output voltage change circuit that changes the divided voltage in accordance with a voltage input to the external terminal to change the output voltage in accordance with the voltage of the external terminal.
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