公开(公告)号：US20130176015A1

公开(公告)日：2013-07-11

申请号：US13347197

申请日：2012-01-10

申请人： Tetsuo Sato ,  Ryotaro Kudo ,  Hideo Ishii ,  Kenichi Nakano

发明人： Tetsuo Sato ,  Ryotaro Kudo ,  Hideo Ishii ,  Kenichi Nakano

IPC分类号： G05F3/16

CPC分类号： H02M1/088 ,  H02M3/158 ,  H02M2001/0054 ,  Y02B70/1491

摘要： A step down convertor with a distributed driving system. In one embodiment, an apparatus is disclosed that includes an inductor coupled to an output node. The apparatus also includes first and second circuits. The first circuit can transmit current to the output node via the inductor, and the second can transmit current to the output node via the inductor. The apparatus also includes a third circuit for modifying operational aspects of the first circuit or the second circuit based on a magnitude of current flowing through the inductor.

摘要翻译： 具有分布式驱动系统的降压转换器。 在一个实施例中，公开了一种包括耦合到输出节点的电感器的装置。 该装置还包括第一和第二电路。 第一个电路可以通过电感将电流传输到输出节点，而第二个电路可以通过电感将电流传输到输出节点。 该装置还包括第三电路，用于基于流过电感器的电流的大小来修改第一电路或第二电路的操作方面。

公开(公告)号：US08314606B2

公开(公告)日：2012-11-20

申请号：US12620438

申请日：2009-11-17

申请人： Tetsuo Sato ,  Matsuura Nobuyoshi ,  Ryotaro Kudo ,  Hideo Ishii ,  Shin Chiba

发明人： Tetsuo Sato ,  Matsuura Nobuyoshi ,  Ryotaro Kudo ,  Hideo Ishii ,  Shin Chiba

IPC分类号： G01R19/00 ,  G01R31/26

CPC分类号： G01R19/0092

摘要： A method can include obtaining a voltage across a first transistor as an obtained voltage. The method can also include multiplying the obtained voltage by a predetermined multiple M to yield a multiplied voltage. The method can further include applying the multiplied voltage to a second transistor, wherein the second transistor is N times smaller than the first transistor. The method can additionally include providing an output current of the second transistor as an M/N scaled estimate of an output current of the first transistor.

摘要翻译： 一种方法可以包括获得跨第一晶体管的电压作为获得的电压。 该方法还可以包括将获得的电压乘以预定的倍数M以产生倍增的电压。 该方法还可以包括将倍增电压施加到第二晶体管，其中第二晶体管比第一晶体管小N倍。 该方法还可以包括提供第二晶体管的输出电流作为第一晶体管的输出电流的M / N定标估计。

公开(公告)号：US20110204858A1

公开(公告)日：2011-08-25

申请号：US13102106

申请日：2011-05-06

申请人： Ryotaro Kudo

发明人： Ryotaro Kudo

IPC分类号： G05F1/563

CPC分类号： H02M3/1584 ,  H01L24/06 ,  H01L24/48 ,  H01L24/49 ,  H01L2224/05554 ,  H01L2224/0603 ,  H01L2224/451 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2224/4903 ,  H01L2224/49111 ,  H01L2224/49113 ,  H01L2224/49431 ,  H01L2924/00014 ,  H01L2924/12032 ,  H01L2924/13091 ,  H01L2924/14 ,  H02M2001/007 ,  H01L2224/45099 ,  H01L2924/00

摘要： The power supply apparatus realizes a high-speed response, a stable operation, and a low output ripple with low power consumption. The first stage switching regulator receives an input voltage and forms a first voltage. The second stage switching regulator receives the first voltage and forms a second voltage. The second stage switching regulator includes an N-phase (N is two or more) switching regulator, and the first voltage is set to be N times a target value of the second voltage. The input voltage is set to be higher than the first voltage.

摘要翻译： 电源装置实现了高速响应，稳定的操作和低功耗的低输出纹波。 第一级开关调节器接收输入电压并形成第一电压。 第二级开关调节器接收第一电压并形成第二电压。 第二级开关调节器包括N相（N是两个或更多个）开关调节器，并且第一电压被设置为第二电压的目标值的N倍。 输入电压设定为高于第一电压。

公开(公告)号：US07898233B2

公开(公告)日：2011-03-01

申请号：US12101665

申请日：2008-04-11

申请人： Tetsuo Sato ,  Masato Ono ,  Ryotaro Kudo

发明人： Tetsuo Sato ,  Masato Ono ,  Ryotaro Kudo

IPC分类号： G05F1/40

CPC分类号： H02M3/1584 ,  H02M1/36

摘要： A multiphase voltage regulator system comprises a microcontroller unit (MCU) including a reference voltage generator, and a timing generator for generating n-phase start timing signals; a load for receiving an output voltage; a comparator comparing the reference voltage and output voltage to generate a comparison result; and at least n points of load (POLs) coupled between the MCU and load for controlling output voltage in response to the n-phase start timing signals and the comparison result. Each POL may include a high-side and low-side transistor; and a D-FlipFlop, the D terminal coupled High, the clock terminal coupled to receive a control signal based on a respective one of the n-phase start timing signals, the Q terminal coupled to drive the high-side transistor, the /Q terminal coupled to drive the low-side transistor, and the reset terminal coupled to receive a reset control signal based on the comparison result.

摘要翻译： 多相电压调节器系统包括一个包括参考电压发生器的微控制器单元（MCU）和用于产生n相启动定时信号的定时发生器; 用于接收输出电压的负载; 比较器比较参考电压和输出电压以产生比较结果; 以及耦合在MCU和负载之间的至少n个负载点（POL），用于响应于n相开始定时信号和比较结果来控制输出电压。 每个POL可以包括高边和低边晶体管; 和D-FlipFlop，D端耦合高电平，时钟端子被耦合以基于n相开始定时信号中的相应一个接收控制信号，Q端耦合以驱动高侧晶体管，/ Q 端子耦合以驱动低侧晶体管，并且复位端子被耦合以基于比较结果接收复位控制信号。

公开(公告)号：US20110002358A1

公开(公告)日：2011-01-06

申请号：US12574588

申请日：2009-10-06

申请人： Tetsuo Sato ,  Ryotaro Kudo

发明人： Tetsuo Sato ,  Ryotaro Kudo

IPC分类号： G01K7/00

CPC分类号： G01K7/00 ,  G01K1/026 ,  G01K3/00 ,  G01K7/01 ,  G01K2003/145 ,  G06F1/206 ,  G06F1/26 ,  H01L23/34 ,  H01L2924/0002 ,  H05K1/0201 ,  H05K1/0262 ,  H05K2201/10151 ,  H05K2201/10166 ,  H05K2203/163 ,  Y02D10/16 ,  H01L2924/00

摘要： An apparatus, in one embodiment, can include a configuration including a plurality of heat generation devices. The apparatus also includes a plurality of thermal sensors respectively, operably connected to each of the plurality of heat generation devices, wherein each thermal sensor of the plurality of thermal sensors includes a respective output terminal configured to provide a voltage representative of the temperature of the respective heat generation device. The apparatus further includes an output circuit configured to output the highest temperature information among the heat generation devices. The output terminals of the plurality of thermal sensors are tied together. A corresponding method is also discussed.

摘要翻译： 在一个实施例中，装置可以包括包括多个发热装置的构造。 该装置还包括分别可操作地连接到多个发热装置中的每一个的多个热传感器，其中多个热传感器中的每个热传感器包括相应的输出端子，其被配置为提供代表相应 发热装置。 该装置还包括：输出电路，被配置为在发热装置之间输出最高温度信息。 多个热传感器的输出端子被连接在一起。 还讨论了相应的方法。

公开(公告)号：US20090219002A1

公开(公告)日：2009-09-03

申请号：US12463790

申请日：2009-05-11

申请人： Nobuyuki Shirai ,  Ryotaro Kudo

发明人： Nobuyuki Shirai ,  Ryotaro Kudo

IPC分类号： G05F1/10

CPC分类号： H03K17/6871 ,  H02M3/1588 ,  H02M2001/0032 ,  H02M2001/0048 ,  H03K17/165 ,  Y02B70/1466 ,  Y02B70/1491 ,  Y02B70/16

摘要： A capacitor is disposed between the output side and the ground potential of an inductor which creates an output voltage. A first switch element supplies a current from an input voltage to an input side of the inductor, and a second switch element which is turned on when the first switch element is off sets the input side of the inductor to a prescribed potential. A control circuit detects the arrival of the voltage on the input side of the inductor at a high voltage corresponding to the input voltage when the load circuit is in a light load state and the second switch element is off, and turns on the first switch element. It invalidates the detection output of the voltage detecting circuit when the load circuit is in a heavy load state and, after the second switch element is turned off, turns on the first switch element.

摘要翻译： 电感器设置在产生输出电压的电感器的输出侧和接地电位之间。 第一开关元件将电流从输入电压提供给电感器的输入侧，并且当第一开关元件断开时导通的第二开关元件将电感器的输入侧设定为规定电位。 当负载电路处于轻负载状态并且第二开关元件断开时，控制电路以对应于输入电压的高电压检测电感器的输入侧的电压到达，并且接通第一开关元件 。 当负载电路处于重负载状态时，使电压检测电路的检测输出无效，并且在第二开关元件断开之后，导通第一开关元件。

公开(公告)号：US07548050B2

公开(公告)日：2009-06-16

申请号：US11979093

申请日：2007-10-31

申请人： Nobuyuki Shirai ,  Ryotaro Kudo

发明人： Nobuyuki Shirai ,  Ryotaro Kudo

IPC分类号： G05F1/40

CPC分类号： H03K17/6871 ,  H02M3/1588 ,  H02M2001/0032 ,  H02M2001/0048 ,  H03K17/165 ,  Y02B70/1466 ,  Y02B70/1491 ,  Y02B70/16

摘要： A capacitor is disposed between the output side and the ground potential of an inductor which creates an output voltage. A first switch element supplies a current from an input voltage to an input side of the inductor, and a second switch element which is turned on when the first switch element is off sets the input side of the inductor to a prescribed potential. A control circuit detects the arrival of the voltage on the input side of the inductor at a high voltage corresponding to the input voltage when the load circuit is in a light load state and the second switch element is off, and turns on the first switch element. It invalidates the detection output of the voltage detecting circuit when the load circuit is in a heavy load state and, after the second switch element is turned off, turns on the first switch element.

摘要翻译： 电感器设置在产生输出电压的电感器的输出侧和接地电位之间。 第一开关元件将电流从输入电压提供给电感器的输入侧，并且当第一开关元件断开时导通的第二开关元件将电感器的输入侧设定为规定电位。 当负载电路处于轻负载状态并且第二开关元件断开时，控制电路以对应于输入电压的高电压检测电感器的输入侧的电压到达，并且接通第一开关元件 。 当负载电路处于重负载状态时，使电压检测电路的检测输出无效，并且在第二开关元件断开之后，导通第一开关元件。

公开(公告)号：US20070262761A1

公开(公告)日：2007-11-15

申请号：US11621664

申请日：2007-01-10

申请人： Takuya ISHIGAKI ,  Takashi Sase ,  Akihiko Kanouda ,  Koji Kateno ,  Ryotaro Kudo

发明人： Takuya ISHIGAKI ,  Takashi Sase ,  Akihiko Kanouda ,  Koji Kateno ,  Ryotaro Kudo

IPC分类号： G05F1/46

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： In a switching power supply apparatus for performing a switching control of a power MOS transistor that flows current to a coil and converting input voltage into output voltage, even if there occurs offset voltage in a current sensing operational amplifier, source potential of a current sensing MOS transistor is precisely kept at source potential of a low side power MOS transistor. For example, an offset cancel capacitor is arranged at an inverting input terminal of the current sensing operational amplifier, and voltage in the direction to offset the offset voltage occurring in the operational amplifier is charged to this capacitor.

摘要翻译： 在用于对电流流向线圈并将输入电压转换为输出电压的功率MOS晶体管的开关控制的开关电源装置中，即使在电流感测运算放大器中发生偏移电压，电流感测MOS的源极电位 晶体管被精确地保持在低边功率MOS晶体管的源极电位。 例如，偏移消除电容器被布置在电流感测运算放大器的反相输入端子处，并且将在运算放大器中发生的偏移电压偏移的方向上的电压充电到该电容器。

公开(公告)号：US09418986B2

公开(公告)日：2016-08-16

申请号：US13589160

申请日：2012-08-19

申请人： Tomoaki Uno ,  Yoshitaka Onaya ,  Hirokazu Kato ,  Ryotaro Kudo ,  Koji Saikusa

发明人： Tomoaki Uno ,  Yoshitaka Onaya ,  Hirokazu Kato ,  Ryotaro Kudo ,  Koji Saikusa

IPC分类号： H01L27/088 ,  H01L23/495 ,  H01L25/16 ,  H02M1/32 ,  H02M3/156 ,  H01L21/8234 ,  H01L23/00 ,  H01L25/07 ,  H02M1/00

CPC分类号： H01L27/088 ,  H01L21/823487 ,  H01L23/49524 ,  H01L23/49562 ,  H01L23/49575 ,  H01L24/37 ,  H01L24/40 ,  H01L24/73 ,  H01L25/074 ,  H01L25/16 ,  H01L2224/05554 ,  H01L2224/0603 ,  H01L2224/32245 ,  H01L2224/37011 ,  H01L2224/371 ,  H01L2224/37124 ,  H01L2224/37147 ,  H01L2224/3754 ,  H01L2224/40095 ,  H01L2224/40245 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2224/73221 ,  H01L2224/73265 ,  H01L2224/8385 ,  H01L2224/84801 ,  H01L2224/8485 ,  H01L2924/13091 ,  H01L2924/181 ,  H01L2924/30107 ,  H02M1/32 ,  H02M3/156 ,  H02M2001/0009 ,  H01L2924/00012 ,  H01L2924/00 ,  H01L2924/00014

摘要： A semiconductor device is improved in reliability. A power MOSFET for switching, and a sense MOSFET for sensing a current flowing in the power MOSFET, which is smaller in area than the power MOSFET, are formed in one semiconductor chip. The semiconductor chip is mounted over a chip mounting portion, and sealed in a resin. To first and second source pads for outputting the current flowing in the power MOSFET, a metal plate is bonded. A third source pad for sensing the source voltage of the power MOSFET is at a position not overlapping the metal plate. A coupled portion between a source wire forming the third pad and another source wire forming the first and second pads is at a position overlapping the metal plate.

摘要翻译： 提高了半导体器件的可靠性。 在一个半导体芯片中形成用于切换的功率MOSFET和用于感测功率MOSFET中流过的电流的感测MOSFET，该功率MOSFET的面积小于功率MOSFET。 半导体芯片安装在芯片安装部分上，并密封在树脂中。 对于用于输出在功率MOSFET中流动的电流的第一和第二源极焊盘，金属板被接合。 用于感测功率MOSFET的源极电压的第三源极焊盘位于与金属板不重叠的位置。 形成第三焊盘的源极线和形成第一和第二焊盘的另一源极之间的耦合部分处于与金属板重叠的位置。

公开(公告)号：US08519687B2

公开(公告)日：2013-08-27

申请号：US12911098

申请日：2010-10-25

申请人： Ryotaro Kudo

发明人： Ryotaro Kudo

IPC分类号： G05F1/00

CPC分类号： H02M3/1588 ,  H01L24/34 ,  H01L24/37 ,  H01L2224/37147 ,  H01L2224/37599 ,  H01L2224/48247 ,  H01L2224/73221 ,  H01L2224/83801 ,  H01L2224/8385 ,  H01L2224/84801 ,  H01L2224/8485 ,  H01L2924/181 ,  H02M3/1584 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16 ,  H01L2924/00012 ,  H01L2924/00014

摘要： A power source device capable of improving the power conversion efficiency at a light load independent of an input power source voltage is realized. For example, a clock signal is output from a common control unit to a PWM-mounted drive unit including a reverse-current detection circuit in addition to a peak current control method. This clock signal is selected by a mode setting signal from either of a clock signal with a constant frequency or a clock signal which is generated via a one-shot pulse generation circuit every time an output voltage at an output power source node decreases. When the latter is selected, the switching frequency at a light load decreases and the power conversion efficiency improves. Furthermore, the peak current control method can reduce the input power source voltage dependence of the switching frequency.

摘要翻译： 实现了能够在轻负载下独立于输入电源电压来提高功率转换效率的电源装置。 例如，除了峰值电流控制方法之外，时钟信号从公共控制单元输出到包括反向电流检测电路的PWM安装的驱动单元。 该时钟信号由来自具有恒定频率的时钟信号的模式设置信号或通过单输出脉冲发生电路每当输出电源节点的输出电压降低时产生的时钟信号选择。 当选择后者时，轻负载时的开关频率降低，并且电力转换效率提高。 此外，峰值电流控制方法可以降低开关频率的输入电源电压依赖性。