公开(公告)号：US20050231180A1

公开(公告)日：2005-10-20

申请号：US11090205

申请日：2005-03-28

申请人： Toshihisa Nagata ,  Kohji Yoshii ,  Yusuke Minakuchi

发明人： Toshihisa Nagata ,  Kohji Yoshii ,  Yusuke Minakuchi

IPC分类号： G05F1/40 ,  G05F1/575

CPC分类号： G05F1/575

摘要： A constant voltage circuit that is capable of realizing high speed response with respect to an abrupt change in an input voltage or a load current is disclosed. The constant voltage circuit includes a first error amplifier with a high direct current gain and a second error amplifier with high speed responsiveness with respect to a change in an output voltage. The constant voltage circuit uses the first and second error amplifiers to conduct operation control of an output voltage control transistor in response to a change in the output voltage.

摘要翻译： 公开了能够相对于输入电压或负载电流的突然变化实现高速响应的恒压电路。 恒压电路包括具有高直流增益的第一误差放大器和相对于输出电压的变化具有高速响应性的第二误差放大器。 恒压电路使用第一误差放大器和第二误差放大器来响应于输出电压的变化来对输出电压控制晶体管进行操作控制。

公开(公告)号：US07368896B2

公开(公告)日：2008-05-06

申请号：US11090205

申请日：2005-03-28

申请人： Toshihisa Nagata ,  Kohji Yoshii ,  Yusuke Minakuchi

发明人： Toshihisa Nagata ,  Kohji Yoshii ,  Yusuke Minakuchi

IPC分类号： G05F1/573

CPC分类号： G05F1/575

摘要： A constant voltage circuit that is capable of realizing high speed response with respect to an abrupt change in an input voltage or a load current is disclosed. The constant voltage circuit includes a first error amplifier with a high direct current gain and a second error amplifier with high speed responsiveness with respect to a change in an output voltage. The constant voltage circuit uses the first and second error amplifiers to conduct operation control of an output voltage control transistor in response to a change in the output voltage.

摘要翻译： 公开了能够相对于输入电压或负载电流的突然变化实现高速响应的恒压电路。 恒压电路包括具有高直流增益的第一误差放大器和相对于输出电压的变化具有高速响应性的第二误差放大器。 恒压电路使用第一误差放大器和第二误差放大器来响应于输出电压的变化来对输出电压控制晶体管进行操作控制。

公开(公告)号：US07948223B2

公开(公告)日：2011-05-24

申请号：US12057294

申请日：2008-03-27

申请人： Toshihisa Nagata ,  Kohji Yoshii ,  Yusuke Minakuchi

发明人： Toshihisa Nagata ,  Kohji Yoshii ,  Yusuke Minakuchi

IPC分类号： G05F1/56

CPC分类号： G05F1/575

摘要： A constant voltage circuit that is capable of realizing high speed response with respect to an abrupt change in an input voltage or a load current is disclosed. The constant voltage circuit includes a first error amplifier with a high direct current gain and a second error amplifier with high speed responsiveness with respect to a change in an output voltage. The constant voltage circuit uses the first and second error amplifiers to conduct operation control of an output voltage control transistor in response to a change in the output voltage.

摘要翻译： 公开了能够相对于输入电压或负载电流的突然变化实现高速响应的恒压电路。 恒压电路包括具有高直流增益的第一误差放大器和相对于输出电压的变化具有高速响应性的第二误差放大器。 恒压电路使用第一误差放大器和第二误差放大器来响应于输出电压的变化来对输出电压控制晶体管进行操作控制。

公开(公告)号：US20080238385A1

公开(公告)日：2008-10-02

申请号：US12057294

申请日：2008-03-27

申请人： Toshihisa Nagata ,  Kohji Yoshii ,  Yusuke Minakuchi

发明人： Toshihisa Nagata ,  Kohji Yoshii ,  Yusuke Minakuchi

IPC分类号： G05F1/00

CPC分类号： G05F1/575

摘要： A constant voltage circuit that is capable of realizing high speed response with respect to an abrupt change in an input voltage or a load current is disclosed. The constant voltage circuit includes a first error amplifier with a high direct current gain and a second error amplifier with high speed responsiveness with respect to a change in an output voltage. The constant voltage circuit uses the first and second error amplifiers to conduct operation control of an output voltage control transistor in response to a change in the output voltage.

摘要翻译： 公开了能够相对于输入电压或负载电流的突然变化实现高速响应的恒压电路。 恒压电路包括具有高直流增益的第一误差放大器和相对于输出电压的变化具有高速响应性的第二误差放大器。 恒压电路使用第一误差放大器和第二误差放大器来响应于输出电压的变化来对输出电压控制晶体管进行操作控制。

公开(公告)号：US20070115045A1

公开(公告)日：2007-05-24

申请号：US11653872

申请日：2007-01-17

申请人： Toshihisa Nagata ,  Hideki Agari ,  Kohji Yoshii

发明人： Toshihisa Nagata ,  Hideki Agari ,  Kohji Yoshii

IPC分类号： G05F1/10

CPC分类号： G05F1/573

摘要： A constant voltage circuit is disclosed that includes an output control transistor and an overcurrent protection circuit. The overcurrent protection circuit includes a proportional current generation circuit part, a current division circuit part, a division ratio control circuit part, a current-voltage conversion circuit part, and an output current control circuit part. When the output voltage of the current-voltage conversion circuit part reaches a predetermined voltage, the output current control circuit part prevents an increase in the output current of the output control transistor so as to reduce a voltage output from an output terminal. When the voltage output from the output terminal is reduced to a predetermined limit voltage, the division ratio control circuit part changes the division ratio of the current division circuit part so that a current supplied to the current-voltage conversion circuit part increases so as to reduce the output current of the output control transistor.

公开(公告)号：US07215180B2

公开(公告)日：2007-05-08

申请号：US10902957

申请日：2004-08-02

申请人： Toshihisa Nagata ,  Hideki Agari ,  Kohji Yoshii

发明人： Toshihisa Nagata ,  Hideki Agari ,  Kohji Yoshii

IPC分类号： G05F1/10

CPC分类号： G05F1/573

摘要： A constant voltage circuit is disclosed that includes an output control transistor and an overcurrent protection circuit. The overcurrent protection circuit includes a proportional current generation circuit part, a current division circuit part, a division ratio control circuit part, a current-voltage conversion circuit part, and an output current control circuit part. When the output voltage of the current-voltage conversion circuit part reaches a predetermined voltage, the output current control circuit part prevents an increase in the output current of the output control transistor so as to reduce a voltage output from an output terminal. When the voltage output from the output terminal is reduced to a predetermined limit voltage, the division ratio control circuit part changes the division ratio of the current division circuit part so that a current supplied to the current-voltage conversion circuit part increases so as to reduce the output current of the output control transistor.

摘要翻译： 公开了一种包括输出控制晶体管和过电流保护电路的恒压电路。 过电流保护电路包括比例电流产生电路部分，分流电路部分，分频比控制电路部分，电流 - 电压转换电路部分和输出电流控制电路部分。 当电流 - 电压转换电路部分的输出电压达到预定电压时，输出电流控制电路部分防止输出控制晶体管的输出电流增加，从而降低从输出端输出的电压。 当从输出端子输出的电压降低到预定极限电压时，分频比控制电路部分改变分流电路部分的分频比，使得提供给电流 - 电压转换电路部分的电流增加，以减少 输出控制晶体管的输出电流。

公开(公告)号：US20050036246A1

公开(公告)日：2005-02-17

申请号：US10902957

申请日：2004-08-02

申请人： Toshihisa Nagata ,  Hideki Agari ,  Kohji Yoshii

发明人： Toshihisa Nagata ,  Hideki Agari ,  Kohji Yoshii

IPC分类号： G05F1/573 ,  H02H7/00

CPC分类号： G05F1/573

摘要： A constant voltage circuit is disclosed that includes an output control transistor and an overcurrent protection circuit. The overcurrent protection circuit includes a proportional current generation circuit part, a current division circuit part, a division ratio control circuit part, a current-voltage conversion circuit part, and an output current control circuit part. When the output voltage of the current-voltage conversion circuit part reaches a predetermined voltage, the output current control circuit part prevents an increase in the output current of the output control transistor so as to reduce a voltage output from an output terminal. When the voltage output from the output terminal is reduced to a predetermined limit voltage, the division ratio control circuit part changes the division ratio of the current division circuit part so that a current supplied to the current-voltage conversion circuit part increases so as to reduce the output current of the output control transistor.

摘要翻译： 公开了一种包括输出控制晶体管和过电流保护电路的恒压电路。 过电流保护电路包括比例电流产生电路部分，分流电路部分，分频比控制电路部分，电流 - 电压转换电路部分和输出电流控制电路部分。 当电流 - 电压转换电路部分的输出电压达到预定电压时，输出电流控制电路部分防止输出控制晶体管的输出电流增加，从而降低从输出端输出的电压。 当从输出端子输出的电压降低到预定极限电压时，分频比控制电路部分改变分流电路部分的分频比，使得提供给电流 - 电压转换电路部分的电流增加，从而减小 输出控制晶体管的输出电流。

公开(公告)号：US08446215B2

公开(公告)日：2013-05-21

申请号：US11653872

申请日：2007-01-17

申请人： Toshihisa Nagata ,  Hideki Agari ,  Kohji Yoshii

发明人： Toshihisa Nagata ,  Hideki Agari ,  Kohji Yoshii

IPC分类号： G05F1/10

CPC分类号： G05F1/573

摘要： A constant voltage circuit is disclosed that includes an output control transistor and an overcurrent protection circuit. The overcurrent protection circuit includes a proportional current generation circuit part, a current division circuit part, a division ratio control circuit part, a current-voltage conversion circuit part, and an output current control circuit part. When the output voltage of the current-voltage conversion circuit part reaches a predetermined voltage, the output current control circuit part prevents an increase in the output current of the output control transistor so as to reduce a voltage output from an output terminal. When the voltage output from the output terminal is reduced to a predetermined limit voltage, the division ratio control circuit part changes the division ratio of the current division circuit part so that a current supplied to the current-voltage conversion circuit part increases so as to reduce the output current of the output control transistor.

摘要翻译： 公开了一种包括输出控制晶体管和过电流保护电路的恒压电路。 过电流保护电路包括比例电流产生电路部分，分流电路部分，分频比控制电路部分，电流 - 电压转换电路部分和输出电流控制电路部分。 当电流 - 电压转换电路部分的输出电压达到预定电压时，输出电流控制电路部分防止输出控制晶体管的输出电流增加，从而降低从输出端输出的电压。 当从输出端子输出的电压降低到预定极限电压时，分频比控制电路部分改变分流电路部分的分频比，使得提供给电流 - 电压转换电路部分的电流增加，从而减小 输出控制晶体管的输出电流。

公开(公告)号：US08253404B2

公开(公告)日：2012-08-28

申请号：US12747202

申请日：2008-12-04

申请人： Kohji Yoshii

发明人： Kohji Yoshii

IPC分类号： G05F1/40 ,  G05F1/56

CPC分类号： H03F3/347 ,  H03F3/45475 ,  H03F2203/45138

摘要： A disclosed constant voltage circuit is configured to become active or inactive and convert an input voltage applied to an input terminal into a predetermined constant voltage for output from an output terminal. The circuit includes an output transistor for supplying, from the input terminal to the output terminal, an output current, an error amplifier circuit unit for controlling operations of the output transistor to make a first proportional voltage, which is proportional to the output voltage from the output terminal, equal to a predetermined reference voltage, a ramp voltage generating circuit unit for generating and outputting a ramp voltage whose voltage level increases at a predetermined speed from start-up, and an amplifier circuit unit for amplifying the voltage difference between the ramp voltage and a second proportional voltage, which is proportional to the output voltage, and outputting the amplified voltage difference to a control electrode of the output transistor.

摘要翻译： 所公开的恒压电路被配置为变为有效或无效，并将施加到输入端的输入电压转换成预定的恒定电压，以从输出端输出。 该电路包括用于从输入端子输出到输出端子的输出晶体管，用于控制输出晶体管的操作以产生第一比例电压的误差放大器电路单元，该第一比例电压与来自 输出端子等于预定的参考电压;斜坡电压产生电路单元，用于产生并输出其电压电平以启动状态以预定速度增加的斜坡电压;以及放大器电路单元，用于放大斜坡电压 以及与输出电压成比例的第二比例电压，并将放大的电压差输出到输出晶体管的控制电极。

公开(公告)号：US20100320993A1

公开(公告)日：2010-12-23

申请号：US12747202

申请日：2008-12-04

申请人： Kohji Yoshii

发明人： Kohji Yoshii

IPC分类号： G05F3/02

CPC分类号： H03F3/347 ,  H03F3/45475 ,  H03F2203/45138

摘要： A disclosed constant voltage circuit is configured to become active or inactive and convert an input voltage applied to an input terminal into a predetermined constant voltage for output from an output terminal. The circuit includes an output transistor for supplying, from the input terminal to the output terminal, an output current, an error amplifier circuit unit for controlling operations of the output transistor to make a first proportional voltage, which is proportional to the output voltage from the output terminal, equal to a predetermined reference voltage, a ramp voltage generating circuit unit for generating and outputting a ramp voltage whose voltage level increases at a predetermined speed from start-up, and an amplifier circuit unit for amplifying the voltage difference between the ramp voltage and a second proportional voltage, which is proportional to the output voltage, and outputting the amplified voltage difference to a control electrode of the output transistor.

摘要翻译： 所公开的恒压电路被配置为变为有效或无效，并将施加到输入端的输入电压转换成预定的恒定电压，以从输出端输出。 该电路包括用于从输入端子输出到输出端子的输出晶体管，用于控制输出晶体管的操作以产生第一比例电压的误差放大器电路单元，该第一比例电压与来自 输出端子等于预定的参考电压;斜坡电压产生电路单元，用于产生并输出其电压电平以启动状态以预定速度增加的斜坡电压;以及放大器电路单元，用于放大斜坡电压 以及与输出电压成比例的第二比例电压，并将放大的电压差输出到输出晶体管的控制电极。