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公开(公告)号：US09639101B2
公开(公告)日：2017-05-02
申请号：US14664361
申请日：2015-03-20
Applicant: Seiko Instruments Inc.
Inventor： Teruo Suzuki
Abstract: To provide a voltage regulator capable of maintaining the accuracy of an output voltage even if it is set to an arbitrary output voltage. A voltage regulator includes an output transistor comprised of an NMOS transistor having a backgate grounded, an error amplifier circuit configured to amplify and output a difference between a divided voltage obtained by dividing an output voltage outputted from the output transistor and a reference voltage and thereby to control a gate of the output transistor, a constant voltage circuit, and a transistor having a gate inputted with a voltage of the constant voltage circuit, a drain connected to the gate of the output transistor, and a source connected to a source of the output transistor.
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公开(公告)号：US09459641B2
公开(公告)日：2016-10-04
申请号：US13754102
申请日：2013-01-30
Applicant: Seiko Instruments Inc.
Inventor： Kaoru Sakaguchi , Teruo Suzuki
CPC classification number: G05F1/5735 , G05F1/56 , G05F1/569 , G05F1/573 , H02H9/02 , H02H9/025 , H02M2001/0025
Abstract: Provided is a variable output voltage regulator capable of reducing heat generation during an overcurrent protection operation even when a setting value of an output voltage is high. The variable output voltage regulator can change an output voltage by trimming a resistor of a voltage dividing circuit in response to a trimming signal output from a trimming signal generation circuit. The trimming signal is used to change a limiting voltage of a fold-back type overcurrent protection circuit.
Abstract translation: 提供了即使当输出电压的设定值高时也能够在过电流保护动作中减少发热的可变输出电压调节器。 可变输出电压调节器可以响应于从微调信号发生电路输出的微调信号来修整分压电路的电阻来改变输出电压。 修整信号用于改变折返式过电流保护电路的限制电压。
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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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4.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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