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Patent Agency Ranking
公开(公告)号：US09385584B2
公开(公告)日：2016-07-05
申请号：US14504133
申请日：2014-10-01
Applicant: Seiko Instruments Inc.
Inventor： Yuji Kobayashi , Teruo Suzuki
Abstract: Provided is a voltage regulator including a leakage current correction circuit capable of keeping the accuracy of an output voltage of the voltage regulator even when an output voltage of a reference voltage circuit is decreased due to the influence of a leakage current. The voltage regulator includes: a reference voltage circuit configured to output a reference voltage; an output transistor configured to output an output voltage; a voltage divider circuit configured to divide the output voltage to output a feedback voltage; an error amplifier circuit configured to amplify a difference between the reference voltage and the feedback voltage, and output the amplified difference to control a gate of the output transistor; and a leakage current correction circuit connected to an output terminal of the voltage divider circuit. The leakage current correction circuit is configured to decrease the feedback voltage to prevent the output voltage from dropping at high temperature.
Abstract translation: 提供了一种包括漏电流校正电路的电压调节器，即使当由于漏电流的影响而导致参考电压电路的输出电压降低时，也能够保持电压调节器的输出电压的精度。 电压调节器包括：参考电压电路，被配置为输出参考电压; 输出晶体管，被配置为输出输出电压; 分压电路，被配置为分压输出电压以输出反馈电压; 误差放大器电路，被配置为放大参考电压和反馈电压之间的差，并输出放大的差值以控制输出晶体管的栅极; 以及漏电流校正电路，连接到分压电路的输出端。 泄漏电流校正电路被配置为减小反馈电压以防止输出电压在高温下下降。
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2.发明授权Voltage regulator having a temperature sensitive leakage current sink circuit 有权电压调节器具有温度敏感的漏电流吸收电路公开(公告)号：US09372489B2
公开(公告)日：2016-06-21
申请号：US14517153
申请日：2014-10-17
Applicant: Seiko Instruments Inc.
Inventor： Yuji Kobayashi , Teruo Suzuki
Abstract: Provided is a voltage regulator including a leakage current sink circuit capable of suppressing an influence of a leakage current of an output transistor at high temperature, and reducing power consumption of the voltage regulator at normal temperature. The voltage regulator includes: a reference voltage circuit configured to output a reference voltage; an output transistor configured to output an output voltage; a voltage divider circuit configured to divide the output voltage to output a feedback voltage; an error amplifier circuit configured to amplify a difference between the reference voltage and the feedback voltage, and output the amplified difference to control a gate of the output transistor; and a leakage current sink circuit connected to an output terminal and configured to be prevented from operating at normal temperature, and suppress an influence of a leakage current from the output transistor only at high temperature.
Abstract translation: 提供一种电压调节器，其包括能够抑制高温下的输出晶体管的漏电流的影响的泄漏电流吸收电路，并且降低正常温度下的电压调节器的功耗。 电压调节器包括：参考电压电路，被配置为输出参考电压; 输出晶体管，被配置为输出输出电压; 分压电路，被配置为分压输出电压以输出反馈电压; 误差放大器电路，被配置为放大参考电压和反馈电压之间的差，并输出放大的差值以控制输出晶体管的栅极; 以及泄漏电流吸收电路，连接到输出端子并被配置为防止在常温下工作，并且仅在高温下抑制来自输出晶体管的漏电流的影响。
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公开(公告)号：US09618951B2
公开(公告)日：2017-04-11
申请号：US14512732
申请日：2014-10-13
Applicant: Seiko Instruments Inc.
Inventor： Yuji Kobayashi , Manabu Fujimura
Abstract: Provided is a voltage regulator capable of keeping the accuracy of an output voltage thereof even at high temperature. The voltage regulator includes: a reference voltage circuit configured to output a reference voltage; an output transistor configured to output an output voltage; a voltage divider circuit configured to divide the output voltage to output a divided voltage; an error amplifier circuit configured to amplify a difference between the reference voltage and the divided voltage, and output the amplified difference to control a gate of the output transistor; a switching circuit configured to switch the divided voltage of the voltage divider circuit; and a temperature detection circuit configured to output a signal in accordance with temperature to control the switching circuit.
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公开(公告)号：US09000749B2
公开(公告)日：2015-04-07
申请号：US13660408
申请日：2012-10-25
Applicant: Seiko Instruments Inc.
Inventor： Yuji Kobayashi
CPC classification number: G05F3/242
Abstract: Provided is a constant current circuit in which an enhancement N-channel transistor can operate in a weak-inversion state even at high temperatures. A constant current circuit includes a current mirror circuit, a constant-current generation block circuit, and an off-leak circuit, wherein the off-leak circuit is constituted by a first enhancement N-channel transistor having a gate and a source connected to an earth terminal and a drain connected to an output of the constant current circuit. This suppresses an increase in a gate-to-source voltage of the enhancement N-channel transistor which generates a constant current, thereby maintaining its operation in a weak-inversion state.
Abstract translation: 提供了即使在高温下，增强型N沟道晶体管也能够在弱反转状态下工作的恒流电路。 恒流电路包括电流镜电路，恒流产生模块电路和漏电电路，其中所述漏电电路由具有栅极和源极的第一增强N沟道晶体管构成， 接地端子和连接到恒流电路的输出的漏极。 这抑制了产生恒定电流的增强型N沟道晶体管的栅极 - 源极电压的增加，从而将其工作维持在弱反转状态。
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公开(公告)号：US08957659B2
公开(公告)日：2015-02-17
申请号：US13779197
申请日：2013-02-27
Applicant: Seiko Instruments Inc.
Inventor： Manabu Fujimura , Takashi Imura , Yuji Kobayashi
Abstract: Provided is a voltage regulator having improved transient response characteristics even when a load current is switched from a light load to a heavy load. The voltage regulator includes, to a gate of a detection transistor constituting an output current detection circuit: a resistive element for interrupting the gate of the detection transistor from an output terminal of a differential amplifier circuit in an AC manner; and a capacitive element connected to an output terminal of the voltage regulator in an AC manner.
Abstract translation: 提供了即使当负载电流从轻负载切换到重负载时，具有改善的瞬态响应特性的电压调节器。 电压调节器包括构成输出电流检测电路的检测晶体管的栅极：用于以AC方式从差分放大器电路的输出端中断检测晶体管的栅极的电阻元件; 以及以AC方式连接到电压调节器的输出端子的电容元件。
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