公开(公告)号：US20160099645A1

公开(公告)日：2016-04-07

申请号：US14968062

申请日：2015-12-14

Applicant: Seiko Instruments Inc.

Inventor： Manabu FUJIMURA ,  Minoru SUDO

IPC: H02M3/158

CPC classification number: H02M3/158 ,  G05F1/56 ,  G05F1/575

Abstract: To provide a voltage regulator capable of using as a capacitor of a phase compensation circuit, a capacitor large in capacitance value per unit area and thin in oxidation film thickness. A voltage limitation circuit that limits so that a voltage applied across a capacitor of a phase compensation circuit does not reach a predetermined value or greater is provided in parallel with the capacitor.

Abstract translation: 为了提供能够用作相位补偿电路的电容器的电压调节器，每单位面积的电容值大，氧化膜厚度薄的电容器。 与电容器并联地设置限制电压限制电路，使得施加在相位补偿电路的电容器上的电压未达到规定值以上。

公开(公告)号：US20130234687A1

公开(公告)日：2013-09-12

申请号：US13779197

申请日：2013-02-27

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Manabu FUJIMURA ,  Takashi IMURA ,  Yuji KOBAYASHI

IPC: G05F1/10

CPC classification number: G05F1/10 ,  G05F1/575

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: 提供即使当负载电流从轻负载切换到重负载时，也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。

公开(公告)号：US20160105113A1

公开(公告)日：2016-04-14

申请号：US14969688

申请日：2015-12-15

Applicant: Seiko Instruments Inc.

Inventor： Toshiyuki TSUZAKI ,  Tadashi KUROZO ,  Manabu FUJIMURA

IPC: H02M3/158

CPC classification number: H02M3/158 ,  G05F1/571 ,  G05F1/573 ,  H02M1/32

Abstract: Provided is a voltage regulator capable of stably suppressing overshoot. The voltage regulator includes a non-regulated state detection circuit for detecting a non-regulated state, and an overshoot suppression circuit. The overshoot suppression circuit is configured to operate when the non-regulated state detection circuit detects the non-regulated state.

Abstract translation: 提供能够稳定地抑制过冲的电压调节器。 电压调节器包括用于检测非调节状态的非调节状态检测电路和过冲抑制电路。 超调抑制电路被配置为在非调节状态检测电路检测到非调节状态时动作。

公开(公告)号：US20150102789A1

公开(公告)日：2015-04-16

申请号：US14512732

申请日：2014-10-13

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Yuji KOBAYASHI ,  Manabu FUJIMURA

IPC: H02M3/158

CPC classification number: G05F1/56 ,  G05F1/468 ,  G05F1/567

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.

Abstract translation: 提供了即使在高温也能够保持其输出电压的精度的电压调节器。 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分压; 误差放大器电路，被配置为放大参考电压和分压之间的差，并输出放大的差值以控制输出晶体管的栅极; 切换电路，被配置为切换分压电路的分压; 以及温度检测电路，被配置为根据温度输出信号以控制开关电路。

公开(公告)号：US20140070778A1

公开(公告)日：2014-03-13

申请号：US14015112

申请日：2013-08-30

Applicant: Seiko Instruments Inc.

Inventor： Yotaro NIHEI ,  Manabu FUJIMURA

IPC: G05F1/10

CPC classification number: G05F1/571 ,  G05F1/575

Abstract: Provided is a voltage regulator capable of suppressing excessive overshoot at the output terminal when the power supply fluctuates in a non-regulate state. The voltage regulator includes: an error amplification circuit that amplifies a difference between reference voltage and divided voltage, thus controlling a gate of an output transistor; an amplifier that compares the reference voltage and the divided voltage to detect overshoot at the output voltage; a first transistor that lets current that is proportional to current flowing through the output transistor pass therethrough; a current mirror circuit that mirrors current that is proportional to the current flowing through the output transistor; and a first bias circuit connected to the amplifier via the current mirror circuit, the first bias circuit increasing bias current of the amplifier to increase a response speed.

Abstract translation: 提供一种电压调节器，当电源在非调节状态波动时，能够抑制输出端子处的过度过冲。 电压调节器包括：误差放大电路，其放大参考电压和分压之间的差，从而控制输出晶体管的栅极; 放大器，用于比较参考电压和分压，以检测输出电压的过冲; 使流过输出晶体管的电流成比例的电流的第一晶体管通过其中; 电流镜电路，其反映与流过输出晶体管的电流成比例的电流; 以及通过电流镜电路连接到放大器的第一偏置电路，第一偏置电路增加放大器的偏置电流以增加响应速度。