公开(公告)号：US07323850B2

公开(公告)日：2008-01-29

申请号：US11195835

申请日：2005-08-02

申请人： Takashi Ryu ,  Takuya Ishii ,  Mikio Motomori ,  Hirohisa Tanabe ,  Tomoya Shigemi

发明人： Takashi Ryu ,  Takuya Ishii ,  Mikio Motomori ,  Hirohisa Tanabe ,  Tomoya Shigemi

IPC分类号： G05F1/00

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： A current detection circuit of the present invention has a switching device 1; an auxiliary switching device 2; an offset voltage source comprising an offset resistor device 7 and a current source circuit 8; a compensation circuit, comprising a differential amplifier 4 and a compensation transistor 5, for adjusting the output current of the auxiliary switching device 2 so that the potential obtained by subtracting the voltage drop across the offset resistor device 7 from the output potential of the switching device 1 is equal to the output potential of the auxiliary switching device 2, being configured that the detection level of the current flowing in the switching device 1 is shifted by an offset amount.

摘要翻译： 本发明的电流检测电路具有开关元件1， 辅助切换装置2; 偏移电压源，包括偏移电阻器件7和电流源电路8; 补偿电路，包括差分放大器4和补偿晶体管5，用于调整辅助开关器件2的输出电流，使得通过从开关器件的输出电位减去偏移电阻器件7上的电压降而获得的电位 1等于辅助开关装置2的输出电位，被配置为使在开关装置1中流动的电流的检测电平偏移了偏移量。

公开(公告)号：US07282894B2

公开(公告)日：2007-10-16

申请号：US11207937

申请日：2005-08-22

申请人： Richard K. Oswald ,  Tamotsu Yamamoto ,  Takashi Ryu

发明人： Richard K. Oswald ,  Tamotsu Yamamoto ,  Takashi Ryu

IPC分类号： G05F1/613

CPC分类号： G01R19/0092 ,  H02M3/156 ,  H02M2001/0009

摘要： A current sensing circuit for use in a switching regulator having a high-side switch. The current sensing circuit includes a first sensing circuit coupled to the high-side switch for measuring current flowing in a positive direction through the high-side switch. The first sensing circuit includes a first replica device for generating a current which is a scaled version of the positive current flowing through the high-side switch. The current sensing circuit further includes a second sensing circuit coupled to the high-side switch for measuring current flowing in a negative direction through the high-side switch. The second sensing circuit includes a second replica device for generating a current which is a scaled version of the negative current flowing through the high-side switch.

摘要翻译： 一种用于具有高侧开关的开关调节器的电流感测电路。 电流检测电路包括耦合到高侧开关的第一感测电路，用于测量通过高侧开关在正方向上流动的电流。 第一感测电路包括用于产生电流的第一复制装置，该电流是流过高侧开关的正电流的缩放版本。 电流感测电路还包括耦合到高侧开关的第二感测电路，用于测量通过高侧开关沿负方向流动的电流。 第二感测电路包括用于产生电流的第二复制装置，该电流是流经高侧开关的负电流的缩放版本。

公开(公告)号：US20070145965A1

公开(公告)日：2007-06-28

申请号：US11633635

申请日：2006-12-05

申请人： Richard Oswald ,  Tamotsu Yamamoto ,  Takashi Ryu ,  Hirohisa Tanabe ,  Masaaki Koto

发明人： Richard Oswald ,  Tamotsu Yamamoto ,  Takashi Ryu ,  Hirohisa Tanabe ,  Masaaki Koto

IPC分类号： G05F1/00

CPC分类号： H02M3/1563

摘要： A switching regulator circuit including a high-side switch and a low-side switch; an inductor having a first terminal coupled to a common terminal between the high-side switch and the low-side switch, and a second terminal coupled to an output terminal of the switching regulator circuit; a low-pass filter coupled to the first terminal of the inductor, where the low-pass filter is operative for generating a ramp signal based on the voltage signal present at the first terminal of the inductor; and a hysteretic comparator coupled to the low pass filter, where the hysteretic comparator receives the ramp signal as an input signal, and generates an output signal which is operative for controlling the operation of the high-side switch and the low-side switch.

摘要翻译： 一种包括高侧开关和低侧开关的开关调节器电路; 电感器，其具有耦合到所述高侧开关和所述低侧开关之间的公共端子的第一端子，以及耦合到所述开关调节器电路的输出端子的第二端子; 耦合到电感器的第一端子的低通滤波器，其中低通滤波器用于基于存在于电感器的第一端子处的电压信号产生斜坡信号; 以及耦合到低通滤波器的迟滞比较器，其中滞后比较器接收斜坡信号作为输入信号，并且产生用于控制高侧开关和低侧开关的操作的输出信号。

公开(公告)号：US07199636B2

公开(公告)日：2007-04-03

申请号：US11094369

申请日：2005-03-31

申请人： Richard K. Oswald ,  Tamotsu Yamamoto ,  Takashi Ryu ,  Hideki Shirokoshi

发明人： Richard K. Oswald ,  Tamotsu Yamamoto ,  Takashi Ryu ,  Hideki Shirokoshi

IPC分类号： H03L5/00

CPC分类号： H02M3/1588 ,  H03K2017/307 ,  Y02B70/1466

摘要： An active diode including a NMOS transistor having a source terminal, a drain terminal, a gate terminal and a back gate terminal, where the source terminal is connected to the back gate terminal and forms the anode terminal of the active diode, and the drain terminal forms the cathode terminal of the active diode. The active diode further includes an offset bias voltage source having a first terminal and a second terminal; and an amplifier having a non-inverting input terminal and an inverting input terminal, and an output terminal, where the inverting input terminal is connected to the drain terminal of the transistor, the non-inverting input terminal is connected to the first terminal of the offset bias source, the output terminal is connected to the gate terminal of the transistor, and the second terminal of the offset bias source is connected to the source terminal of the transistor.

摘要翻译： 一种有源二极管，包括具有源极端子，漏极端子，栅极端子和背栅极端子的NMOS晶体管，其中源极端子连接到背栅极端子并形成有源二极管的阳极端子，并且漏极端子 形成有源二极管的阴极端子。 有源二极管还包括具有第一端子和第二端子的偏移偏置电压源; 以及放大器，其具有非反相输入端子和反相输入端子，以及输出端子，其中反相输入端子连接到晶体管的漏极端子，非反相输入端子连接到晶体管的第一端子 偏移偏置源，输出端子连接到晶体管的栅极端子，偏移偏置源的第二端子连接到晶体管的源极端子。

公开(公告)号：US20060255774A1

公开(公告)日：2006-11-16

申请号：US11414373

申请日：2006-05-01

申请人： Mikio Motomori ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Hirohisa Tanabe ,  Makoto Ishimaru ,  Tomoya Shigemi

发明人： Mikio Motomori ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Hirohisa Tanabe ,  Makoto Ishimaru ,  Tomoya Shigemi

IPC分类号： G05F1/613

CPC分类号： H02M3/1588 ,  Y02B70/1466

摘要： A step-up converter includes an inductor which receives input voltage Vi at one end, a first FET of the first conduction type which functions as a switch for determining whether or not energy is accumulated in the inductor, a second FET of the second conduction type which rectifies a current output from the other end of the inductor, an output capacitor having an end connected to the source of the second FET, a current detection circuit, and a feedback control circuit. The current detection circuit detects a current flowing through the first N-channel FET to output current detection signal Vc. The feedback control circuit controls the operations of the first N-channel FET and a P-channel FET based on current detection signal Vc.

公开(公告)号：US20060164021A1

公开(公告)日：2006-07-27

申请号：US11333312

申请日：2006-01-18

申请人： Takashi Ryu ,  Takuya Ishii ,  Mikio Motomori ,  Hiroki Akashi ,  Hirohisa Tanabe ,  Makoto Ishimaru ,  Tomoya Shigemi

发明人： Takashi Ryu ,  Takuya Ishii ,  Mikio Motomori ,  Hiroki Akashi ,  Hirohisa Tanabe ,  Makoto Ishimaru ,  Tomoya Shigemi

IPC分类号： H05B39/04

CPC分类号： H02M1/08 ,  H02M2001/0025

摘要： An output detection feedback section (5) for controlling the power supply output voltage of a converter unit (4) in response to an error signal Ve has an error amplifier (26) for outputting the error signal Ve, a phase compensation circuit (41), a state detection circuit (42), and a response compensation circuit (43) for setting the voltage of a capacitor (29) of the phase compensation circuit (41) to a predetermined value. When output voltage is switched, the output voltage is fixed at the predetermined value in a DC manner while a transitional response of the error signal (Ve) is accelerated, so that the output voltage is changed at a high speed to a desired value and the overshoot and undershoot are suppressed around the desired value.

摘要翻译： 用于响应于误差信号Ve控制转换器单元（4）的电源输出电压的输出检测反馈部分（5）具有用于输出误差信号Ve的误差放大器（26），相位补偿电路（41） 状态检测电路（42）以及用于将相位补偿电路（41）的电容器（29）的电压设定为规定值的响应补偿电路（43）。 当切换输出电压时，在加速误差信号（Ve）的过渡响应的同时，以直流方式将输出电压固定为规定值，使得输出电压以高速变化为期望值， 过冲和下冲被抑制在所需值附近。

公开(公告)号：US20060103332A1

公开(公告)日：2006-05-18

申请号：US11280314

申请日：2005-11-17

申请人： Mikio Motomori ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Hirohisa Tanabe ,  Makoto Ishimaru ,  Tomoya Shigemi

发明人： Mikio Motomori ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Hirohisa Tanabe ,  Makoto Ishimaru ,  Tomoya Shigemi

IPC分类号： H05B41/36

CPC分类号： H02M3/1588 ,  H02M2001/0025 ,  H02M2001/0029 ,  Y02B70/1466

摘要： A DC-DC converter has switching means which generates a continuous switching voltage having a specified period from an input voltage and outputs the generated switching voltage, output voltage generating means which receives the switching voltage at an inductor and generates an output voltage obtained by rectifying and smoothing a voltage generated in the inductor, lamp signal generating means which generates a lamp signal and outputs the generated lamp signal, and control means which performs an arithmetic operation using a current signal relative to a current flowing in the inductor, an error signal relative to the output voltage, and the lamp signal to generate a control signal for controlling the operation of the switching means and outputs the generated control signal to the switching means. The lamp signal generating means includes first signal generating means for generating a first output signal based on a frequency divided signal having first and second periods obtained by dividing the time of a clock signal having the specified period and second signal generating means for generating a second output signal having a phase 180 degrees different from the phase of the first output signal based on the frequency divided signal, generates the lamp signal which rises after being held at a constant value for a specified time period in each of the first and second periods, and outputs the generated lamp signal.

公开(公告)号：US20060044843A1

公开(公告)日：2006-03-02

申请号：US11207937

申请日：2005-08-22

申请人： Richard Oswald ,  Tamotsu Yamamoto ,  Takashi Ryu

发明人： Richard Oswald ,  Tamotsu Yamamoto ,  Takashi Ryu

IPC分类号： H02M3/335

CPC分类号： G01R19/0092 ,  H02M3/156 ,  H02M2001/0009

摘要： A current sensing circuit for use in a switching regulator having a high-side switch. The current sensing circuit includes a first sensing circuit coupled to the high-side switch for measuring current flowing in a positive direction through the high-side switch. The first sensing circuit includes a first replica device for generating a current which is a scaled version of the positive current flowing through the high-side switch. The current sensing circuit further includes a second sensing circuit coupled to the high-side switch for measuring current flowing in a negative direction through the high-side switch. The second sensing circuit includes a second replica device for generating a current which is a scaled version of the negative current flowing through the high-side switch.

摘要翻译： 一种用于具有高侧开关的开关调节器的电流感测电路。 电流检测电路包括耦合到高侧开关的第一感测电路，用于测量通过高侧开关在正方向上流动的电流。 第一感测电路包括用于产生电流的第一复制装置，该电流是流过高侧开关的正电流的缩放版本。 电流感测电路还包括耦合到高侧开关的第二感测电路，用于测量通过高侧开关沿负方向流动的电流。 第二感测电路包括用于产生电流的第二复制装置，该电流是流经高侧开关的负电流的缩放版本。

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