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    Power converter, control method of power converter, and hard disk drive
    21.
    发明授权
    Power converter, control method of power converter, and hard disk drive 有权
    电源转换器，电源转换器的控制方法和硬盘驱动器

    公开(公告)号：US08605464B2

    公开(公告)日：2013-12-10

    申请号：US13591264

    申请日：2012-08-22

    申请人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Tsuyuki ,  Hiroyuki Shoji

    发明人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Tsuyuki ,  Hiroyuki Shoji

    IPC分类号： H02M3/335

    CPC分类号： H02M1/4258 ,  H02M2001/0064 ,  Y02B70/126

    摘要： A power converter includes a first inductor, a rectifier arm, a first switch arm including a first and second switch circuits, a second switch arm including a third switch circuit and a first capacitor, a LC serial circuit, a Transformer, a rectification and smoothing circuit connected to secondary winding of the transformer, and a control circuit to perform on-off control of the three switch circuits. The rectifier arm, the first and second switch arms and the LC serial circuit are connected in parallel with each other. The LC serial circuit and primary winding of the transformer are connected. AC power supply is connected to the rectifier arm via the first inductor. The control circuit includes an output voltage control circuit to control output voltage at specific setting value, an intermediate voltage control circuit to control intermediate voltage at specific setting value, and a power factor correction control circuit.

    摘要翻译： 电力转换器包括第一电感器，整流器臂，包括第一和第二开关电路的第一开关臂，包括第三开关电路和第一电容器的第二开关臂，LC串联电路，变压器，整流和平滑 连接到变压器的次级绕组的电路，以及用于执行三个开关电路的开关控制的控制电路。 整流臂，第一和第二开关臂和LC串联电路彼此并联连接。 变压器的LC串联电路和初级绕组连接。 交流电源通过第一电感连接到整流臂。 控制电路包括用于以特定设定值控制输出电压的输出电压控制电路，以特定设定值控制中间电压的中间电压控制电路和功率因数校正控制电路。

    SWITCHING POWER SUPPLY
    22.
    发明申请
    SWITCHING POWER SUPPLY 失效
    切换电源

    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。

    Power supply driver circuit
    23.
    发明授权
    Power supply driver circuit 失效

    公开(公告)号：US07138786B2

    公开(公告)日：2006-11-21

    申请号：US11287293

    申请日：2005-11-28

    申请人： Takuya Ishigaki ,  Takashi Sase ,  Akihiko Kanouda ,  Koji Tateno ,  Ryotaro Kudo

    发明人： Takuya Ishigaki ,  Takashi Sase ,  Akihiko Kanouda ,  Koji Tateno ,  Ryotaro Kudo

    IPC分类号： G05F1/613

    CPC分类号： H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

    摘要： A power supply driver circuit with low power losses and desired response characteristics with respect to changes in output and its miniaturization is provided. In a driver IC constituting a switched-mode power supply equipment controlling the switching, by pulse width modulation, of first and second power transistors passing a current in a coil, and outputting a voltage bucked or boosted from an input voltage, current sensing with desired responsiveness is enabled by providing a switching transistor between an inverted input terminal and a non-inverted input terminal of an operational amplifier, preventing, while the second power transistor is ON, the generation of a potential which is undefined when first power transistor is ON, i.e. when the second power transistor is OFF, and maintaining a node potential in a state in which the potential is well defined.

    Resonant converter and control method thereof
    24.
    发明授权
    Resonant converter and control method thereof 失效
    谐振转换器及其控制方法

    公开(公告)号：US07088594B2

    公开(公告)日：2006-08-08

    申请号：US10984846

    申请日：2004-11-10

    申请人： Takashi Sase ,  Akihiko Kanouda ,  Tetsuya Nagayama ,  Tadahiko Hashimoto

    发明人： Takashi Sase ,  Akihiko Kanouda ,  Tetsuya Nagayama ,  Tadahiko Hashimoto

    IPC分类号： H02M3/335

    CPC分类号： H02M3/3376 ,  H02M3/33592 ,  H02M2001/007 ,  Y02B70/1433 ,  Y02B70/1475

    摘要： A resonant converter which can realize its easy design, eliminate the need for its adjustment, realize reliable soft switching operation, and increase an efficiency. A driver DRV of a main switching device uses a PLL circuit PLL to apply frequency tracking control in such a manner that a driving frequency fsw is made to track a resonant frequency fr (or 1/N thereof, N being an odd number) and that the phase of the driving frequency fsw leads the current zero phase of the resonant frequency fr always by a desired time. As a result, such an optimum condition can be kept that the main switching device is triggered immediately before the zero-cross point of a resonant current. Thus the resonant converter which can always satisfy the optimum operational conditions, realize soft switching operation, and increase an efficiency can be realized with an easy design and a manufacturing adjustment-free arrangement.

    摘要翻译： 谐振变换器可以实现其易于设计，无需调整，实现可靠的软开关操作，提高效率。 主开关装置的驱动器DRV使用PLL电路PLL以使驱动频率fsw跟踪谐振频率fr（或其1 / N，N为奇数）的方式施加频率跟踪控制，并且 驱动频率fsw的相位总是导致谐振频率fr的当前零相位期望所需时间。 结果，可以保持在谐振电流的零交叉点之前立即触发主开关装置的最佳状态。 因此，可以通过简单的设计和无制造调整的布置来实现总是能够满足最佳操作条件，实现软开关操作和提高效率的谐振转换器。

    POWER-SUPPLY DEVICE
    25.
    发明申请
    POWER-SUPPLY DEVICE 有权
    电源设备

    公开(公告)号：US20050029997A1

    公开(公告)日：2005-02-10

    申请号：US10937397

    申请日：2004-09-10

    申请人： Takashi Sase ,  Koji Tateno ,  Akihiko Kanouda ,  Katsunori Hayashi ,  Shinichi Yoshida

    发明人： Takashi Sase ,  Koji Tateno ,  Akihiko Kanouda ,  Katsunori Hayashi ,  Shinichi Yoshida

    IPC分类号： H02M3/158 ,  H02M3/335 ,  G05F1/40

    CPC分类号： H02M3/1584 ,  H02M3/1588 ,  H02M3/33507 ,  Y02B70/1466

    摘要： A step-down type DC-DC power-supply device implements both the stabilization of the control loop and the responsibility at the same time. In the power-supply device, an output power signal is fed back to an error amplifier after having passed through a CR smoothing filter provided independently of a power LC smoothing filter. Also, independently of the duty controls over Power MOSFETs, i.e., upper-side/lower-side semiconductor switching components in the steady state, an output from the power LC smoothing filter is added to an upper and lower limit-mode-equipped control circuit, thereby, at the transient state, forcefully setting the duty α at either 0% or 100%.

    摘要翻译： 降压型DC-DC电源装置同时实现控制回路的稳定和责任。 在电源装置中，在通过独立于功率LC平滑滤波器设置的CR平滑滤波器之后，输出功率信号被反馈到误差放大器。 而且，独立于功率MOSFET的占空比控制，即处于稳定状态的上侧/下侧半导体开关元件，来自功率LC平滑滤波器的输出被加到上限和下限模式配置的控制电路 因此，在瞬态状态下，强制将占空比α设置为0％或100％。

    Digital control switching power-supply device and information processing equipment
    26.
    再颁专利
    Digital control switching power-supply device and information processing equipment 有权
    数字控制开关电源装置及信息处理设备

    公开(公告)号：USRE43946E1

    公开(公告)日：2013-01-29

    申请号：US13399572

    申请日：2012-02-17

    申请人： Takashi Sase ,  Yosuke Kawakubo

    发明人： Takashi Sase ,  Yosuke Kawakubo

    IPC分类号： G05F1/575

    CPC分类号： H02M3/157

    摘要： To provide a A digital control switching power-supply device is provided which is capable of suitably achieving fast transient response at the time of a sudden load change. In parallel with normal digital signal processing means that outputs a PWM pulse signal having a desired duty, transient variation detection means composed of a CR filter provided across an output inductor and a window comparator is provided in preparation for a sudden load change. If a sudden decrease in load is detected, a PWM pulse signal having a duty of 0% is forcedly output, and if a sudden increase in load is detected, a PWM pulse signal having a duty of 100% is forcedly output.

    摘要翻译： 提供一种A数字控制开关电源装置，其能够在突然的负载变化时适当地实现快速的瞬态响应。 与正常的数字信号处理装置并行地输出具有期望占空比的PWM脉冲信号，提供由跨过输出电感器提供的CR滤波器和窗口比较器组成的瞬态变化检测装置，用于突然的负载变化。 如果检测到负载突然减小，则强制输出占空比为0％的PWM脉冲信号，如果检测到负载突然增加，则强制输出占空比为100％的PWM脉冲信号。

    Digital control switching power-supply device and information processing equipment
    28.
    发明授权
    Digital control switching power-supply device and information processing equipment 有权
    数字控制开关电源装置及信息处理设备

    公开(公告)号：US07990122B2

    公开(公告)日：2011-08-02

    申请号：US11853916

    申请日：2007-09-12

    申请人： Takashi Sase ,  Yosuke Kawakubo

    发明人： Takashi Sase ,  Yosuke Kawakubo

    IPC分类号： G05F1/575

    CPC分类号： H02M3/157

    摘要： To provide a digital control switching power-supply device capable of suitably achieving fast transient response at the time of a sudden load change. In parallel with normal digital signal processing means that outputs a PWM pulse signal having a desired duty, transient variation detection means composed of a CR filter provided across an output inductor and a window comparator is provided in preparation for a sudden load change. If a sudden decrease in load is detected, a PWM pulse signal having a duty of 0% is forcedly output, and if a sudden increase in load is detected, a PWM pulse signal having a duty of 100% is forcedly output.

    摘要翻译： 提供能够在突然负载变化时适当地实现快速瞬态响应的数字控制开关电源装置。 与正常的数字信号处理装置并行地输出具有期望占空比的PWM脉冲信号，提供由跨过输出电感器提供的CR滤波器和窗口比较器组成的瞬态变化检测装置，用于突然的负载变化。 如果检测到负载突然减小，则强制输出占空比为0％的PWM脉冲信号，如果检测到负载突然增加，则强制输出占空比为100％的PWM脉冲信号。

    DIGITAL CONTROL SWITCHING POWER-SUPPLY DEVICE AND INFORMATION PROCESSING EQUIPMENT
    29.
    发明申请
    DIGITAL CONTROL SWITCHING POWER-SUPPLY DEVICE AND INFORMATION PROCESSING EQUIPMENT 有权
    数字控制开关电源设备和信息处理设备

    公开(公告)号：US20080252277A1

    公开(公告)日：2008-10-16

    申请号：US11853916

    申请日：2007-09-12

    申请人： Takashi Sase ,  Yosuke Kawakubo

    发明人： Takashi Sase ,  Yosuke Kawakubo

    IPC分类号： G05F1/575

    CPC分类号： H02M3/157

    摘要： To provide a digital control switching power-supply device capable of suitably achieving fast transient response at the time of a sudden load change. In parallel with normal digital signal processing means that outputs a PWM pulse signal having a desired duty, transient variation detection means composed of a CR filter provided across an output inductor and a window comparator is provided in preparation for a sudden load change. If a sudden decrease in load is detected, a PWM pulse signal having a duty of 0% is forcedly output, and if a sudden increase in load is detected, a PWM pulse signal having a duty of 100% is forcedly output.

    摘要翻译： 提供能够在突然负载变化时适当地实现快速瞬态响应的数字控制开关电源装置。 与正常的数字信号处理装置并行地输出具有期望占空比的PWM脉冲信号，提供由跨过输出电感器提供的CR滤波器和窗口比较器组成的瞬态变化检测装置，用于突然的负载变化。 如果检测到负载突然减小，则强制输出占空比为0％的PWM脉冲信号，如果检测到负载突然增加，则强制输出占空比为100％的PWM脉冲信号。