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公开(公告)号：US20160187203A1
公开(公告)日：2016-06-30
申请号：US14969653
申请日：2015-12-15
Applicant: Seiko Instruments Inc.
Inventor： Masakazu SUGIURA , Hideyuki SAWAI
Abstract: Provided is an overheat detection circuit that is capable of quickly outputting an overheated state detection signal in an overheated state without outputting an unintended erroneous output caused by disturbance noise, such as momentary voltage fluctuations in the power supply. The overheat detection circuit includes: a temperature sensor; a comparison section; and a disturbance noise removal section configured to output an overheated state detection signal to an output section after a predetermined delay time has elapsed. The delay time is reduced in proportion to temperature.
Abstract translation: 提供一种能够在过热状态下快速输出过热状态检测信号而不输出由诸如电源中的瞬时电压波动的干扰噪声引起的意外错误输出的过热检测电路。 过热检测电路包括：温度传感器; 比较部分; 以及干扰噪声去除部，被配置为在经过了预定的延迟时间之后将过热状态检测信号输出到输出部。 延迟时间与温度成比例地降低。
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Patent Agency Ranking
公开(公告)号：US20150214838A1
公开(公告)日：2015-07-30
申请号：US14596816
申请日：2015-01-14
Applicant: Seiko Instruments Inc.
Inventor： Tsutomu TOMIOKA , Masakazu SUGIURA
IPC: H02M3/156
Abstract: To provide a voltage regulator capable of preventing a reduction in output voltage and an increase in output noise in a steady state without performing suppression of an overshoot. A voltage regulator is equipped with an overshoot detection circuit which detects an overshoot on the basis of an output voltage, an overshoot suppression circuit which controls an output terminal of an error amplifier circuit, based on the output of the overshoot detection circuit, and a driver state discrimination circuit which discriminates the state of an output transistor, based on an output voltage of the error amplifier circuit. The driver state discrimination circuit is configured to control the operation of the overshoot suppression circuit.
Abstract translation: 提供能够防止在稳定状态下输出电压降低和输出噪声增加而不进行过冲抑制的电压调节器。 电压调节器配备有基于输出电压检测过冲的过冲检测电路，基于过冲检测电路的输出来控制误差放大器电路的输出端子的过冲抑制电路和驱动器 状态判别电路，其基于误差放大器电路的输出电压来辨别输出晶体管的状态。 驱动器状态判别电路被配置为控制过冲抑制电路的操作。
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公开(公告)号：US20150171731A1
公开(公告)日：2015-06-18
申请号：US14568973
申请日：2014-12-12
Applicant: Seiko Instruments Inc.
Inventor： Tsutomu TOMIOKA , Masakazu SUGIURA
CPC classification number: H02M1/088 , G05F1/56 , Y10T307/549
Abstract: Provided is a voltage regulator configured to suppress a variation of an output voltage so as to stably operate even when a power supply voltage varies. The voltage regulator includes a control circuit having an input terminal connected to a drain of an output transistor, and an output terminal connected to an error amplifier circuit. The control circuit is configured to cause a boost current to flow through an error amplifier circuit when the output voltage varies beyond a predetermined value.
Abstract translation: 提供了一种电压调节器，其被配置为抑制输出电压的变化，以便即使当电源电压变化时也能够稳定地操作。 电压调节器包括具有连接到输出晶体管的漏极的输入端子和连接到误差放大器电路的输出端子的控制电路。 控制电路被配置为当输出电压变化超过预定值时，使升压电流流过误差放大器电路。
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公开(公告)号：US20160161532A1
公开(公告)日：2016-06-09
申请号：US14956900
申请日：2015-12-02
Applicant: Seiko Instruments Inc.
Inventor： Masakazu SUGIURA
CPC classification number: H03K5/24 , G01R19/0084 , H03K5/2472
Abstract: To provide a voltage detection circuit which avoids unintentional on/off-control of an output transistor immediately after starting a power supply. A voltage detection circuit is configured to be equipped with a comparator which compares a detected voltage and a reference voltage, and an inverter which drives an output transistor, based on an output of the comparator and to supply the operating current of the inverter by a current source.
Abstract translation: 提供电压检测电路，其在开始电源之后立即避免输出晶体管的无意的导通/关断。 电压检测电路被配置为配备比较检测电压和参考电压的比较器，以及基于比较器的输出驱动输出晶体管的逆变器，并且通过电流提供逆变器的工作电流 资源。
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15.发明申请公开(公告)号：US20150311691A1
公开(公告)日：2015-10-29
申请号：US14693425
申请日：2015-04-22
Applicant: Seiko Instruments Inc.
Inventor： Masakazu SUGIURA
CPC classification number: G05F1/56 , G05F1/573 , H03K17/0822
Abstract: To provide an overcurrent protection circuit which prevents an excessive current from flowing to an output terminal for a long time, and a semiconductor device and a voltage regulator each equipped with the overcurrent protection circuit. An overcurrent protection circuit is configured to include a first transistor which allows a current proportional to an output current flowing through an output transistor to flow, a constant current circuit which allows a reference current to flow, a comparison circuit which compares the current flowing through the first transistor and the reference current, and a control circuit which controls a gate of the output transistor by a signal outputted from the comparison circuit.
Abstract translation: 提供一种能够防止过大的电流长时间流向输出端子的过电流保护电路，以及配备有过电流保护电路的半导体装置和电压调节器。 过电流保护电路被配置为包括第一晶体管，其允许与流过输出晶体管的输出电流成比例的电流流动，允许参考电流流动的恒流电路;比较电路，其比较流过 第一晶体管和参考电流;以及控制电路，其通过从比较电路输出的信号来控制输出晶体管的栅极。
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公开(公告)号：US20150212536A1
公开(公告)日：2015-07-30
申请号：US14596923
申请日：2015-01-14
Applicant: Seiko Instruments Inc.
Inventor： Masakazu SUGIURA , Tsutomu TOMIOKA
IPC: G05F3/16
CPC classification number: G05F3/16 , G05F3/24 , Y10T307/549
Abstract: To provide a reference voltage circuit capable of outputting a reference voltage excellent in temperature characteristic. A reference voltage circuit includes a first constant current circuit, a first transistor of a first conductivity type which has a source connected to the first constant current circuit and is operated as a first stage source follower, a second constant current circuit, and a second transistor of a second conductivity type which has a gate connected to the source of the first transistor and a source connected to the second constant current circuit and is operated as a second stage source follower. The reference voltage circuit is configured to output a reference voltage from the source of the second transistor.
Abstract translation: 提供能够输出温度特性优异的参考电压的参考电压电路。 参考电压电路包括第一恒流电路，第一导电类型的第一晶体管，其具有连接到第一恒流电路的源极，并作为第一级源极跟随器工作，第二恒流电路和第二晶体管 第二导电类型的栅极连接到第一晶体管的源极，源极连接到第二恒流电路并作为第二级源极跟随器工作。 参考电压电路被配置为从第二晶体管的源极输出参考电压。
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