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：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.

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。

公开(公告)号：US08654551B2

公开(公告)日：2014-02-18

申请号：US13214540

申请日：2011-08-22

申请人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Tsuyuki

发明人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Tsuyuki

IPC分类号： H02M7/08 ,  H02J1/10

CPC分类号： H05B33/0809 ,  H02M7/217 ,  H05B33/0815 ,  Y02B20/348

摘要： A power supply device includes two buck converters, having a coupling inductor Lo composed of two mutually-coupled inductors L1, L2, and a output capacitor Co, wherein of the two buck converters, a first buck converter is operated during a positive half-cycle period of an AC input voltage, and a second buck converter is operated during a negative half-cycle period of the AC input voltage, to obtain a DC output voltage at both ends of the output capacitor Co from the AC input voltage, is provided. Herewith, is provided the power-supply device using the buck converter, which can be reduced in the number of components and produced in a low cost without a diode bridge.

摘要翻译： 电源装置包括两个降压转换器，其具有由两个相互耦合的电感器L1，L2和输出电容器Co组成的耦合电感器Lo，其中在两个降压转换器中，第一降压转换器在正半周期期间操作 AC输入电压的周期，并且在AC输入电压的负半周期期间操作第二降压转换器，以从AC输入电压获得输出电容器Co两端的DC输出电压。 因此，提供了使用降压转换器的电源装置，其可以减少元件的数量并且在没有二极管桥的情况下以低成本生产。

公开(公告)号：US08199530B2

公开(公告)日：2012-06-12

申请号：US12544135

申请日：2009-08-19

申请人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Tsuyuki

发明人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Tsuyuki

IPC分类号： H02M3/335 ,  H02M3/24

CPC分类号： H02M3/33576 ,  Y02B70/1433

摘要： Zero volt switching during a light load is performed in such a manner that through an ON/OFF control of switches provided for a full bridge circuit and the synchronous rectifier switches in a rectifier and smoothing circuit, a resonant peak voltage necessary for the zero voltage switching determined by the output current flowing to output terminals, a resonant inductor and a resonant capacitor capacitance is ensured so that an energy accumulated in the rectifier and smoothing circuit is returned to the full bridge circuit so as to act as equivalent as when the output current is increased and to increase the current flowing through the full bridge circuit.

摘要翻译： 轻负载时的零伏开关以这样的方式执行，即通过对全桥电路和同步整流器的开/关控制切换整流器和平滑电路，零电压开关所需的谐振峰值电压 由流过输出端子的输出电流确定谐振电感器和谐振电容器电容，使得积分在整流器和平滑电路中的能量返回到全桥电路，以便当输出电流为 增加并增加流过全桥电路的电流。

公开(公告)号：US20110194206A1

公开(公告)日：2011-08-11

申请号：US12869176

申请日：2010-08-26

申请人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Tsuyuki

发明人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Tsuyuki

IPC分类号： G11B21/02 ,  H02M3/335

CPC分类号： H02M3/33592 ,  H02M2001/0032 ,  H02M2001/0048 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491 ,  Y02B70/16

摘要： A power-supply unit which comprises a transformer, a full bridge circuit consisting of four arm switches provided on a primary side of the transformer, a rectifier and smoothing circuit including two synchronous rectifier switches provided on a secondary side of the transformer, a choke coil, and a capacitor, an output terminal provided in the rectifier and smoothing circuit, a control circuit controlling ON/OFF of the four arm switches of the full bridge circuit and the two synchronous rectifier switches of the rectifier and smoothing circuit, a resonant inductor consisting of a leakage inductor component of the transformer and a parasitic inductor component of wirings on the primary side of the transformer, and a resonant capacitor consisting of a parasitic capacitor component of the arm switches of the full bridge circuit, and in which the control circuit comprises timing variable means which varies switching timings of the two synchronous rectifier switches of the rectifier and smoothing circuit based on an output current flowing in the output terminal provided in the rectifier and smoothing circuit.

摘要翻译： 包括变压器的电源单元，设置在变压器的初级侧的四个臂开关构成的全桥电路，包括设置在变压器次级侧的两个同步整流开关的整流器和平滑电路，扼流圈 以及电容器，设置在整流器和平滑电路中的输出端子，控制电路，控制全桥电路的四个臂开关和整流器和平滑电路的两个同步整流开关的接通/断开，谐振电感器包括 的变压器的漏电感器部件和变压器的初级侧的布线的寄生电感器部件以及由全桥电路的臂开关的寄生电容器部件组成的谐振电容器，并且其中控制电路包括 定时可变装置，其改变整流器和smo的两个同步整流开关的开关定时 基于在整流器和平滑电路中提供的输出端中流过的输出电流的电路。

公开(公告)号：US07615980B2

公开(公告)日：2009-11-10

申请号：US11320872

申请日：2005-12-30

申请人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Kawakubo

发明人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Kawakubo

IPC分类号： G05F1/40

CPC分类号： H02M3/156 ,  H02M2001/0025

摘要： A power-supply device including a marginal check voltage setting circuit that is easily adaptable to downsizing of the device and to configuration using ICs. The power-supply device of this invention includes a marginal check voltage setting circuit that sets a desired marginal check voltage, an error amplifier that delivers output of an error signal, a pulse width modulation oscillator that modulates the pulse width of the output from the error amplifier, a driver circuit that generates driving signal from the pulse signal originating from the pulse width modulation oscillator, and a pair of power semiconductor switching devices that work to step down the input voltage and generate an output voltage based on the driving signal. Furthermore, the power-supply device is also provided with an over-voltage detection circuit and a power-good circuit both circuits being positioned at the output terminal of the marginal check voltage setting circuit.

摘要翻译： 一种电源装置，包括边缘检查电压设置电路，其容易适应于设备的小型化以及使用IC的配置。 本发明的电源装置包括设置期望的边缘检查电压的边缘检查电压设置电路，提供误差信号的输出的误差放大器，调制脉冲宽度的脉冲宽度的脉冲宽度调制振荡器 放大器，根据源自脉宽调制振荡器的脉冲信号产生驱动信号的驱动电路，以及一对功率半导体开关器件，用于降低输入电压并基于驱动信号产生输出电压。 此外，电源装置还设置有过电压检测电路和电源良好电路，两个电路位于边缘检查电压设置电路的输出端。

公开(公告)号：US20130194698A1

公开(公告)日：2013-08-01

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 ,  G11B21/02

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。

公开(公告)号：US08305065B2

公开(公告)日：2012-11-06

申请号：US12370640

申请日：2009-02-13

申请人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Tsuyuki

发明人： Takashi Sase ,  Akihiko Kanouda ,  Yosuke Tsuyuki

IPC分类号： G05F1/00

CPC分类号： H02M3/156 ,  H02M2001/0032 ,  Y02B70/16

摘要： A first-order feedback control power supply apparatus being arranged in such a manner that when the apparatus is driven under light load condition, a current flowing through an inductor is detected by employing a second CR smoothing filter; when the present load condition is judged as a light load condition based upon the detected inductor current, both upper-sided/lower-sided power MOSFETs and a PWM oscillator are turned OFF so as to be brought into sleep states; when an output voltage of the power supply apparatus is lowered and the lowered output voltage reaches a lower limit threshold of a transient variation detecting circuit, the upper-sided power MOSFET is turned ON to recover the output voltage; and when the output voltage of the power supply voltage reaches a predetermined voltage, the upper-sided power MOSFET is turned OFF so as to be again brought into the sleep state.

摘要翻译： 第一级反馈控制电源装置以这样的方式布置，即当该装置在轻负载条件下被驱动时，通过采用第二CR平滑滤波器来检测流经电感器的电流; 当根据检测到的电感电流将当前的负载状态判定为轻负载状态时，上下两侧功率MOSFET和PWM振荡器都被截止从而处于睡眠状态; 当电源装置的输出电压降低并且降低的输出电压达到瞬态变化检测电路的下限阈值时，上侧功率MOSFET导通以恢复输出电压; 并且当电源电压的输出电压达到预定电压时，将上侧功率MOSFET关断，从而再次进入睡眠状态。

公开(公告)号：US20100232180A1

公开(公告)日：2010-09-16

申请号：US12544135

申请日：2009-08-19

申请人： Takashi SASE ,  Akihiko Kanouda ,  Yosuke Tsuyuki

发明人： Takashi SASE ,  Akihiko Kanouda ,  Yosuke Tsuyuki

IPC分类号： H02M3/335

CPC分类号： H02M3/33576 ,  Y02B70/1433

摘要： Zero volt switching during a light load is performed in such a manner that through an ON/OFF control of switches provided for a full bridge circuit and the synchronous rectifier switches in a rectifier and smoothing circuit, a resonant peak voltage necessary for the zero voltage switching determined by the output current flowing to output terminals, a resonant inductor and a resonant capacitor capacitance is ensured so that an energy accumulated in the rectifier and smoothing circuit is returned to the full bridge circuit so as to act as equivalent as when the output current is increased and to increase the current flowing through the full bridge circuit.

摘要翻译： 轻负载时的零伏开关以这样的方式执行，即通过对全桥电路和同步整流器的开/关控制切换整流器和平滑电路，零电压开关所需的谐振峰值电压 由流过输出端子的输出电流确定谐振电感器和谐振电容器电容，使得积分在整流器和平滑电路中的能量返回到全桥电路，以便当输出电流为 增加并增加流过全桥电路的电流。