公开(公告)号：US07250746B2

公开(公告)日：2007-07-31

申请号：US11092814

申请日：2005-03-30

申请人： Richard K. Oswald ,  Tamotsu Yamamoto ,  Hiroshi Saito ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Takeshi Tanaka

发明人： Richard K. Oswald ,  Tamotsu Yamamoto ,  Hiroshi Saito ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Takeshi Tanaka

IPC分类号： G05F1/618 ,  G05F1/575

CPC分类号： H02M3/156

摘要： A power supply switching regulator including a common terminal; an input terminal for supplying a direct current input; an output terminal; a recirculating diode having a first terminal connected to the common terminal; an inductor having a first terminal connected to a second terminal of the recirculation diode and a second terminal connected to the output terminal; a capacitor having a first terminal connected to the output terminal and a second terminal connected to the common terminal; a switch connected between the input terminal and the first terminal of the inductor, the switch operable for switching between an ON state in which the direct current input is coupled to the inductor, and an OFF state in which the direct current input is isolated from the inductor; and a controller coupled to the switch and operable for controlling the amount of time the switch is in the ON state and the OFF state such that the duration of time the switch is in the ON state is inversely proportional to the difference between the voltage at the input terminal and the voltage at the output terminal.

摘要翻译： 一种电源开关调节器，包括公共端子; 用于提供直流输入的输入端; 输出端子; 循环二极管，其具有连接到所述公共端子的第一端子; 电感器，其具有连接到所述再循环二极管的第二端子的第一端子和连接到所述输出端子的第二端子; 电容器，其具有连接到所述输出端子的第一端子和连接到所述公共端子的第二端子; 连接在电感器的输入端子和第一端子之间的开关，所述开关可操作用于在其中直流输入耦合到电感器的导通状态和直流输入与电感器隔离的截止状态之间切换 电感; 以及控制器，其耦合到所述开关并且可操作用于控制所述开关处于导通状态和断开状态的时间量，使得所述开关处于导通状态的持续时间与所述开关处于所述开关状态的电压之间的差成反比 输入端子和输出端子的电压。

公开(公告)号：US08686704B2

公开(公告)日：2014-04-01

申请号：US12721054

申请日：2010-03-10

申请人： Takuya Ishii ,  Takashi Ryu ,  Satoshi Wada

发明人： Takuya Ishii ,  Takashi Ryu ,  Satoshi Wada

IPC分类号： G05F1/56 ,  G05F1/565 ,  G05F1/575

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： A current sense circuit for use with a switching regulator including a first transistor, connected to an inductor, configured to switch a current flowing through the inductor from a power supply; and a second transistor, connected to a node to which the inductor and the first transistor are connected, configured to be turned on during a part of an OFF period of the first transistor. The current sense circuit includes a current generator configured to generate a sense current corresponding to a current flowing through the first transistor; a hold circuit configured to output a voltage corresponding to the sense current during an ON period of the first transistor, and to hold and output the voltage corresponding to the sense current during the OFF period of the first transistor; and an output transistor configured to generate a current corresponding to the voltage output by the hold circuit.

摘要翻译： 一种用于开关调节器的电流检测电路，包括连接到电感器的第一晶体管，其被配置为从电源切换流过电感器的电流; 以及连接到所述电感器和所述第一晶体管连接到的节点的第二晶体管，被配置为在所述第一晶体管的OFF周期的一部分期间导通。 电流检测电路包括电流发生器，其被配置为产生与流过第一晶体管的电流相对应的感测电流; 保持电路，被配置为在所述第一晶体管的导通时段期间输出与所述感测电流相对应的电压，并且在所述第一晶体管的所述断开期间保持并输出与所述感测电流对应的电压; 以及输出晶体管，被配置为产生与由保持电路输出的电压相对应的电流。

公开(公告)号：US08149021B2

公开(公告)日：2012-04-03

申请号：US12643292

申请日：2009-12-21

申请人： Kouichi Mikami ,  Takuya Ishii ,  Takashi Ryu

发明人： Kouichi Mikami ,  Takuya Ishii ,  Takashi Ryu

IPC分类号： H02M11/00

CPC分类号： H03F3/45475 ,  G01R19/0092 ,  H03F2203/45138

摘要： A first auxiliary switch circuit is connected to one terminal and a first terminal of a main switch circuit and generates a first auxiliary detection current. A second auxiliary switch circuit is connected to the other terminal and a second terminal of the main switch circuit and generates a second auxiliary detection current. A current adjustment detection circuit adjusts the first auxiliary detection current so that the potentials of the other terminal and the first terminal are equal and passes the first auxiliary detection current in a direction of receiving the current from the first auxiliary switch circuit and adjusts the second auxiliary detection current so that the potentials of the one terminal and the second terminal are equal and passes the second auxiliary detection current in a direction of outputting the current to the second auxiliary switch circuit, thereby generating a detection current being proportional to the output current.

摘要翻译： 第一辅助开关电路连接到主开关电路的一个端子和第一端子，并产生第一辅助检测电流。 第二辅助开关电路连接到主开关电路的另一端子和第二端子，并产生第二辅助检测电流。 电流调节检测电路调节第一辅助检测电流，使得另一端子和第一端子的电位相等并且在从第一辅助开关电路接收电流的方向上通过第一辅助检测电流，并且调整第二辅助检测电流 检测电流使得一端子和第二端子的电位相等并且在向第二辅助开关电路输出电流的方向上通过第二辅助检测电流，从而产生与输出电流成比例的检测电流。

公开(公告)号：US08040121B2

公开(公告)日：2011-10-18

申请号：US12974624

申请日：2010-12-21

申请人： Makoto Ishida ,  Takashi Ryu ,  Takuya Ishii

发明人： Makoto Ishida ,  Takashi Ryu ,  Takuya Ishii

IPC分类号： G05F1/575 ,  G05F1/618

CPC分类号： H02M3/1563 ,  H02M1/32

摘要： A switching regulator is configured to generate an output voltage by stepping down an input voltage by switching control of a switching element. The switching regulator includes a first comparator configured to compare a feedback voltage of the output voltage and a target voltage; a second comparator configured to compare magnitude of a current flowing through the switching element and a predetermined value; an on-time timer configured to measure fixed on-time for on-control of the switching element; an off-time timer configured to measure fixed off-time for off-control of the switching element; and a control circuit configured to perform the on-control of the switching element with the fixed on-time in accordance with an output of the first comparator, and the off-control of the switching element with the fixed off-time in accordance with an output of the second comparator.

摘要翻译： 开关稳压器被配置为通过切换开关元件的控制来降低输入电压来产生输出电压。 开关稳压器包括：第一比较器，被配置为比较输出电压的反馈电压和目标电压; 第二比较器，被配置为比较流经所述开关元件的电流的大小和预定值; 接通时间定时器，其被配置为测量固定导通时间以对所述开关元件进行导通控制; 断开时间定时器，其被配置为测量用于切换元件的非控制的固定关闭时间; 以及控制电路，被配置为根据第一比较器的输出，以固定的导通时间执行开关元件的接通控制，并且根据一个第二比较器的固定关断时间对开关元件的断开控制 输出第二比较器。

公开(公告)号：US20100289473A1

公开(公告)日：2010-11-18

申请号：US12721054

申请日：2010-03-10

申请人： Takuya Ishii ,  Takashi Ryu ,  Satoshi Wada

发明人： Takuya Ishii ,  Takashi Ryu ,  Satoshi Wada

IPC分类号： G05F1/10

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： A current sense circuit for use with a switching regulator including a first transistor, connected to an inductor, configured to switch a current flowing through the inductor from a power supply; and a second transistor, connected to a node to which the inductor and the first transistor are connected, configured to be turned on during a part of an OFF period of the first transistor. The current sense circuit includes a current generator configured to generate a sense current corresponding to a current flowing through the first transistor; a hold circuit configured to output a voltage corresponding to the sense current during an ON period of the first transistor, and to hold and output the voltage corresponding to the sense current during the OFF period of the first transistor; and an output transistor configured to generate a current corresponding to the voltage output by the hold circuit.

摘要翻译： 一种用于开关调节器的电流检测电路，包括连接到电感器的第一晶体管，其被配置为从电源切换流过电感器的电流; 以及连接到所述电感器和所述第一晶体管连接到的节点的第二晶体管，被配置为在所述第一晶体管的OFF周期的一部分期间导通。 电流检测电路包括电流发生器，其被配置为产生与流过第一晶体管的电流相对应的感测电流; 保持电路，被配置为在所述第一晶体管的导通时段期间输出与所述感测电流相对应的电压，并且在所述第一晶体管的所述断开期间保持并输出与所述感测电流对应的电压; 以及输出晶体管，被配置为产生与由保持电路输出的电压相对应的电流。

公开(公告)号：US20050218877A1

公开(公告)日：2005-10-06

申请号：US11092814

申请日：2005-03-30

申请人： Richard Oswald ,  Tamotsu Yamamoto ,  Hiroshi Saito ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Takeshi Tanaka

发明人： Richard Oswald ,  Tamotsu Yamamoto ,  Hiroshi Saito ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Takeshi Tanaka

IPC分类号： H02M3/155 ,  G05F1/40 ,  H02M3/156

CPC分类号： H02M3/156

摘要： A power supply switching regulator including a common terminal; an input terminal for supplying a direct current input; an output terminal; a recirculating diode having a first terminal connected to the common terminal; an inductor having a first terminal connected to a second terminal of the recirculation diode and a second terminal connected to the output terminal; a capacitor having a first terminal connected to the output terminal and a second terminal connected to the common terminal; a switch connected between the input terminal and the first terminal of the inductor, the switch operable for switching between an ON state in which the direct current input is coupled to the inductor, and an OFF state in which the direct current input is isolated from the inductor; and a controller coupled to the switch and operable for controlling the amount of time the switch is in the ON state and the OFF state such that the duration of time the switch is in the ON state is inversely proportional to the difference between the voltage at the input terminal and the voltage at the output terminal.

摘要翻译： 一种电源开关调节器，包括公共端子; 用于提供直流输入的输入端; 输出端子; 循环二极管，其具有连接到所述公共端子的第一端子; 电感器，其具有连接到所述再循环二极管的第二端子的第一端子和连接到所述输出端子的第二端子; 电容器，其具有连接到所述输出端子的第一端子和连接到所述公共端子的第二端子; 连接在电感器的输入端子和第一端子之间的开关，所述开关可操作用于在其中直流输入耦合到电感器的导通状态和直流输入与电感器隔离的截止状态之间切换 电感; 以及控制器，其耦合到所述开关并且可操作用于控制所述开关处于导通状态和断开状态的时间量，使得所述开关处于导通状态的持续时间与所述开关处于所述开关状态的电压之间的差成反比 输入端子和输出端子的电压。

公开(公告)号：US08384367B2

公开(公告)日：2013-02-26

申请号：US12567149

申请日：2009-09-25

申请人： Maki Murakami ,  Takuya Ishii ,  Takashi Ryu

发明人： Maki Murakami ,  Takuya Ishii ,  Takashi Ryu

IPC分类号： G05F1/40

CPC分类号： H02M3/156 ,  H02J7/0065 ,  H02M2001/0022

摘要： A step-down switching regulator includes a switching device coupled to an input terminal to which an input voltage is applied, an inductor having a first end and a second end, the first end being connected to the switching device, a smoothing unit having an output terminal and configured to smooth a voltage at the second end of the inductor and generate an output voltage at the output terminal, a rectifier configured to flow a current to the inductor when the switching device is in an OFF state, and a control circuit configured to drive the switching device so that the output voltage becomes equal to a set target voltage. The control circuit detects a difference voltage between the input voltage and the output voltage or a difference voltage between the input voltage and the set target voltage, and causes the switching device to be in an ON state when the difference voltage is lower than or equal to a predetermined voltage value.

摘要翻译： 降压开关调节器包括耦合到施加有输入电压的输入端子的开关装置，具有第一端和第二端的电感器，第一端连接到开关装置，平滑单元，具有输出端 并且被配置为平滑电感器的第二端处的电压并在输出端产生输出电压，整流器被配置为当开关器件处于断开状态时将电流流向电感器，并且控制电路被配置为 驱动开关器件，使得输出电压等于设定的目标电压。 控制电路检测输入电压和输出电压之间的差分电压或输入电压与设定的目标电压之间的差分电压，并且当差值电压低于或等于 预定的电压值。

公开(公告)号：US20100156383A1

公开(公告)日：2010-06-24

申请号：US12643292

申请日：2009-12-21

申请人： Kouichi Mikami ,  Takuya Ishii ,  Takashi Ryu

发明人： Kouichi Mikami ,  Takuya Ishii ,  Takashi Ryu

IPC分类号： G05F3/08 ,  H03K5/22 ,  H03F3/45

CPC分类号： H03F3/45475 ,  G01R19/0092 ,  H03F2203/45138

摘要： A first auxiliary switch circuit is connected to one terminal and a first terminal of a main switch circuit and generates a first auxiliary detection current. A second auxiliary switch circuit is connected to the other terminal and a second terminal of the main switch circuit and generates a second auxiliary detection current. A current adjustment detection circuit adjusts the first auxiliary detection current so that the potentials of the other terminal and the first terminal are equal and passes the first auxiliary detection current in a direction of receiving the current from the first auxiliary switch circuit and adjusts the second auxiliary detection current so that the potentials of the one terminal and the second terminal are equal and passes the second auxiliary detection current in a direction of outputting the current to the second auxiliary switch circuit, thereby generating a detection current being proportional to the output current.

摘要翻译： 第一辅助开关电路连接到主开关电路的一个端子和第一端子，并产生第一辅助检测电流。 第二辅助开关电路连接到主开关电路的另一端子和第二端子，并产生第二辅助检测电流。 电流调节检测电路调节第一辅助检测电流，使得另一端子和第一端子的电位相等并且在从第一辅助开关电路接收电流的方向上通过第一辅助检测电流，并且调整第二辅助检测电流 检测电流使得一端子和第二端子的电位相等并且在向第二辅助开关电路输出电流的方向上通过第二辅助检测电流，从而产生与输出电流成比例的检测电流。

公开(公告)号：US20080211475A1

公开(公告)日：2008-09-04

申请号：US11905399

申请日：2007-09-28

申请人： Takuya Ishii ,  Mikio Motomori ,  Junichi Morita ,  Takashi Ryu ,  Masaaki Koto ,  Makoto Ishimaru ,  Kazuhito Kimura ,  Satoshi Wada

发明人： Takuya Ishii ,  Mikio Motomori ,  Junichi Morita ,  Takashi Ryu ,  Masaaki Koto ,  Makoto Ishimaru ,  Kazuhito Kimura ,  Satoshi Wada

IPC分类号： G05F1/565

CPC分类号： H02M3/156

摘要： The present invention provides a current-mode control step-up converter capable of reducing the minimum duty ratio to a sufficiently small value and facilitating the setting of the maximum duty ratio. The step-up converter comprises a current detector 9 for generating a current detection signal Vc corresponding to the current of a rectifier 4; an error amplifier 8 for generating an error signal Ve corresponding to an output DC voltage Vo; and a control circuit 10 for turning ON/OFF the main switch 3 on the basis of the current detection signal Vc and the error signal Ve. The control circuit 10 comprises a comparator 11 and a timer circuit 12. With this configuration, the ON time of the main switch 3 is set at a predetermined value, and the valley value of an inductor current changing in a triangular waveform is controlled. Hence, the OFF time of the main switch is adjusted to stabilize the output. Since the ON time of the main switch 3 can be set as desired, the minimum duty ratio can be reduced to zero or a sufficiently small value.

摘要翻译： 本发明提供了一种电流模式控制升压转换器，其能够将最小占空比降低到足够小的值，并且有助于设定最大占空比。 升压转换器包括用于产生与整流器4的电流相对应的电流检测信号Vc的电流检测器9; 用于产生对应于输出DC电压Vo的误差信号Ve的误差放大器8; 以及用于根据电流检测信号Vc和误差信号Ve导通/断开主开关3的控制电路10。 控制电路10包括比较器11和定时器电路12。 利用这种配置，主开关3的接通时间被设定为预定值，并且控制以三角波形变化的电感器电流的谷值。 因此，主开关的断开时间被调节以稳定输出。 由于可以根据需要设定主开关3的导通时间，所以可以将最小占空比降低到零或足够小的值。

公开(公告)号：US06831448B2

公开(公告)日：2004-12-14

申请号：US10427487

申请日：2003-05-01

申请人： Takuya Ishii ,  Hiroshi Saito ,  Hironori Kamiya ,  Takashi Ryu

发明人： Takuya Ishii ,  Hiroshi Saito ,  Hironori Kamiya ,  Takashi Ryu

IPC分类号： G05F140

CPC分类号： H02M3/158 ,  H02M3/1582

摘要： In order to increase the transient response speed of a DC-to-DC converter capable of voltage step-up and voltage step-down, to which a DC voltage is input from a battery or the like and from which a controlled DC voltage is supplied to a load, a first voltage E1 lower than an output setting voltage Eset by a predetermined voltage is defined and is compared with a DC output voltage Eo by a first comparator, and the result of the comparison is output. @a A second voltage E2 lower than a DC input voltage Ei by a predetermined voltage is defined and is compared with the DC output voltage Eo by a second comparator 133, and the result of the comparison is also output. When the results of the comparisons are represented by Eo

摘要翻译： 为了增加能够进行升压和降压的DC-DC转换器的瞬态响应速度，从电池等输入直流电压并从其提供受控直流电压 定义一个低于输出设定电压Eset的预定电压的第一电压E1并通过第一比较器与直流输出电压Eo进行比较，并输出比较结果。 定义了低于直流输入电压Ei的预定电压的第二电压E2，并且通过第二比较器133与直流输出电压Eo进行比较，并且还输出比较结果。 当比较结果由Eo