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1. 发明专利

JP2010035357A Power supplying apparatus 有权
标题翻译：电源设备
公开(公告)号：JP2010035357A
公开(公告)日：2010-02-12
申请号：JP2008195612
申请日：2008-07-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASE TAKASHI , KANOUDA TAMAHIKO , TSUYUKI YOSUKE
IPC分类号： H02M3/155 , H02M3/28
CPC分类号： H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： PROBLEM TO BE SOLVED: To reduce both switching loss and control power for enhancing efficiency at a light load, in a primary system feedback control power supply apparatus (tentative name).
SOLUTION: At the time of light load, the inductor current is detected, by using a second CR smoothing filter; and when a determination is made that the load is light, upper and lower power MOSFETs and a PWM oscillator are turned off, to set a sleep mode. When the output voltage drops to reach the lower limit threshold of a transient variation detecting circuit, the upper power MOSFET is turned on to recover the output voltage; and when the output voltage reaches a predetermined level, the upper power MOSFET is turned off and sets the mode to the sleep mode again.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：在主系统反馈控制电源装置（暂定名称）中，为了降低开关损耗和控制功率，以提高轻负载时的效率。解决方案：轻载时，通过使用第二CR平滑滤波器检测电感电流; 并且当确定负载很轻时，上下功率MOSFET和PWM振荡器关闭，以设置睡眠模式。当输出电压下降到瞬态变化检测电路的下限阈值时，上功率MOSFET导通，恢复输出电压; 并且当输出电压达到预定电平时，上功率MOSFET被关断并且将模式再次设置为睡眠模式。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2011166949A Power-supply device, hard disk drive, and switching method of power-supply device 有权
标题翻译：电源设备，硬盘驱动器和供电设备的切换方法
公开(公告)号：JP2011166949A
公开(公告)日：2011-08-25
申请号：JP2010027352
申请日：2010-02-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASE TAKASHI , KANOUDA TAMAHIKO , TSUYUKI YOSUKE
IPC分类号： H02M3/28 , G11B19/00
CPC分类号： H02M3/33592 , H02M2001/0032 , H02M2001/0048 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491 , Y02B70/16
摘要： PROBLEM TO BE SOLVED: To improve efficiency during a light load by changing the operation timing of synchronous rectifier switches on the secondary side without complicating the power circuit in the power-supply device of an insulated DC-DC converter.
SOLUTION: Arm switches MH1-MH4 of a full bridge circuit 10 and synchronous rectifier switches ML1 and ML2 of a rectifying and smoothing circuit 20 are subjected to ON/OFF control by a control circuit with a timing variable device, and energy stored in the rectifying and smoothing circuit 20 is returned back to the full bridge circuit 10 so that it acts equivalently to the increased output current Io during the light load thus increasing the current flowing to the full bridge circuit 10. Zero volt switching is performed by ensuring a resonance peak voltage required for zero volt switching that depends on the output currents flowing to the output terminals VoH and VoL, the resonance inductor Lr, and the resonance capacitor Cr1 or Cr2.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：通过改变次级侧的同步整流开关的操作时序而不使绝缘DC-DC转换器的电源装置中的电源电路复杂化，来提高轻载时的效率。解决方案：整流和平滑电路20的全桥电路10的臂式开关MH1-MH4和整流平滑电路20的同步整流开关ML1和ML2由具有定时可变装置的控制电路进行ON / OFF控制，并且存储能量在整流和平滑电路20中返回到全桥电路10，使得其在轻负载期间等效于增加的输出电流Io，从而增加流入全桥电路10的电流。零伏特切换通过确保零电压开关所需的谐振峰值电压，取决于流向输出端子VoH和VoL的输出电流，谐振电感器Lr和谐振电容器Cr1或Cr2。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2010213430A Power supply device, hard disk device, and method for switching power supply device 有权
标题翻译：电源装置，硬盘装置和用于切换电源装置的方法
公开(公告)号：JP2010213430A
公开(公告)日：2010-09-24
申请号：JP2009055872
申请日：2009-03-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASE TAKASHI , KANOUDA TAMAHIKO , TSUYUKI YOSUKE
IPC分类号： H02M3/28
CPC分类号： H02M3/33576 , Y02B70/1433
摘要： PROBLEM TO BE SOLVED: To enhance efficiency under a light load by changing the operating timing of a secondary synchronous rectification switch without complicating the circuit in a power section, in a power supply device for an insulated DC-DC converter.
SOLUTION: Under a light load, a resonant peak voltage necessary for zero-volt switching decided by the output current flowing into output terminals VoH, VoL, a resonant inductor Lr, and a resonant capacitor capacitance Cr1 or Cr2 are secured to perform zero-volt switching by on/off controlling the switches MH1 to MH4 of a full-bridge circuit 10 and the synchronous rectification switches ML1, ML2 of a rectification smoothing circuit 20, and returning the energy stored in the rectification smoothing circuit 20 to the full-bridge circuit 10 so as to act as in the case that an output current Io is increased, thereby increasing current flowing in the full-bridge circuit 10.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：在绝缘DC-DC转换器的电源装置中，通过改变次级同步整流开关的操作时间而不使电源部分的电路复杂化，来提高轻负载下的效率。解决方案：在轻负载下，确保由流入输出端子VoH，VoL，谐振电感器Lr和谐振电容器电容Cr1或Cr2的输出电流决定的零伏开关所需的谐振峰值电压，以执行通过开/关控制全桥电路10的开关MH1〜MH4和整流平滑电路20的同步整流开关ML1，ML2进行零伏开关，并将整流平滑电路20中存储的能量恢复到满以便在输出电流Io增加的情况下起作用，从而增加在全桥电路10中流动的电流。（C）2010，JPO和INPIT

4. 发明专利

JP2005151608A Resonance converter and its control method 审中-公开
标题翻译：谐振转换器及其控制方法
公开(公告)号：JP2005151608A
公开(公告)日：2005-06-09
申请号：JP2003380846
申请日：2003-11-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASE TAKASHI , KANOUDA TAMAHIKO , NAGAYAMA TETSUYA , HASHIMOTO TADAHIKO
IPC分类号： H02M7/21 , H02M3/28 , H02M3/335 , H02M3/337
CPC分类号： H02M3/3376 , H02M3/33592 , H02M2001/007 , Y02B70/1433 , Y02B70/1475
摘要： PROBLEM TO BE SOLVED: To surely realize soft switching operation of a resonance converter, while facilitating the design and eliminating adjustment, and to enhance the efficiency.
SOLUTION: A PLL circuit PLL is employed as the driver DRV of a main switching element and such a frequency tracking control as the driving frequency fsw tracks the resonance frequency fr (or 1/N of fr, N: odd number) is applied. In addition, the phase of the fsw is advanced constant from the current zero phase of the fr for a desired time, thus sustaining optimal conditions for firing the main switching element immediately before the zero-cross point of a resonance current.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：确保实现谐振转换器的软开关操作，同时方便设计和消除调节，并提高效率。解决方案：使用PLL电路PLL作为主开关元件的驱动器DRV，并且像驱动频率fsw跟踪谐振频率fr（或fr，N：奇数的1 / N）的频率跟踪控制是应用。此外，fsw的相位从fr的当前零相位提前恒定一段期望的时间，从而在谐振电流的零交叉点之前维持用于点火主开关元件的最佳条件。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2012125099A Power supply device, and led illuminating fixture and hard disk device using the same 有权
标题翻译：电源装置和LED照明装置及使用其的硬盘装置
公开(公告)号：JP2012125099A
公开(公告)日：2012-06-28
申请号：JP2010275764
申请日：2010-12-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASE TAKASHI , KANOUDA TAMAHIKO , TSUYUKI YOSUKE
IPC分类号： H02M7/12 , G11B31/00 , G11B33/12 , H05B37/02
CPC分类号： H05B33/0809 , H02M7/217 , H05B33/0815 , Y02B20/348
摘要： PROBLEM TO BE SOLVED: To provide a power supply device having no diode bridges and enabling further reduction in the number of components, in the power supply device using a step-down converter.SOLUTION: A power supply device constituted by two step-down converters having a coupling inductor Lo obtained by coupling two inductors L1 and L2, and an output capacitor Co. In the power supply device, a first step-down converter of the two step-down converters is operated for a positive half cycle period of an AC input voltage, a second step-down converter is operated for a negative half cycle period of the AC input voltage. Thereby, a DC output voltage can be obtained from the AC input voltage to both ends of the output capacitor.
摘要翻译：要解决的问题：在使用降压转换器的电源装置中，提供一种不具有二极管电桥并能够进一步减少部件数量的电源装置。解决方案：一种由具有通过耦合两个电感器L1和L2而获得的耦合电感器Lo的两个降压转换器和输出电容器Co构成的电源装置。在电源装置中，第一降压转换器两个降压转换器在交流输入电压的正半周期工作，第二降压转换器在交流输入电压的负半周期工作。由此，可以从输入电容器的两端的交流输入电压获得直流输出电压。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2007218671A Overcurrent detector circuit and detection method of power supply device 有权
标题翻译：过电流检测电路及电源装置检测方法
公开(公告)号：JP2007218671A
公开(公告)日：2007-08-30
申请号：JP2006037871
申请日：2006-02-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASE TAKASHI , KANOUDA TAMAHIKO , KAWAKUBO YOSUKE , KURITA KOZABURO
IPC分类号： G01R19/165 , G01R19/04 , H02M3/155
CPC分类号： H02M1/32 , H02M3/156 , H02M2001/0009
摘要： PROBLEM TO BE SOLVED: To provide an overcurrent detector circuit that has resistance to a process of a main MOSFET, is hardly affected by switching noise, and uses ON voltage of the main MOSFET.
SOLUTION: A sense MOSFET (Q3) with a size of 1/m of that of the main MOSFET is disposed separately from the main MOSFET (Q1), and is always set at on, and the on voltage of the DC occurring when current of 1/m corresponding to an overcurrent equivalent value is made to flow in the sense MOSFET is obtained as a reference voltage for setting overcurrent. While, the main MOSFET sampling-holds the on voltage in turning on it and obtains as an DC voltage. These DC voltages are compared with each other by a comparator (COMP).
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供对主MOSFET的工艺具有阻力的过电流检测电路，几乎不受开关噪声的影响，并且使用主MOSFET的导通电压。
解决方案：主MOSFET的尺寸为1 / m的感测MOSFET（Q3）与主MOSFET（Q1）分开设置，并且始终置于导通状态，并且DC的导通电压发生获得对应于过电流当量值的1 / m的电流作为用于设定过电流的基准电压的有源MOSFET的流过。虽然，主MOSFET采样保持导通电压，并获得作为直流电压。这些直流电压通过比较器（COMP）进行比较。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2007080288A Interface device 有权
标题翻译：接口设备
公开(公告)号：JP2007080288A
公开(公告)日：2007-03-29
申请号：JP2006307900
申请日：2006-11-14
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIKUCHI MUTSUMI , MURABAYASHI FUMIO , SASE TAKASHI , WATANABE TOKUO , AJIRO YUUJI
IPC分类号： G06F3/00
CPC分类号： H01L2924/14
摘要： PROBLEM TO BE SOLVED: To provide an interface device using a dielectrically isolated substrate that sufficiently suppresses malfunction and characteristic degradation due to noise.
SOLUTION: In the interface device, in which an SOI substrate 414 is divided, by a buried insulation film 412 and a region insulation part 410, into a semiconductor support substrate region 411, a controller side region 407, and a network side region 408, and capacitive isolator circuits 405 and 406 are partly formed in the network side region 408, the semiconductor support substrate region 411 and the network side region 408 are connected to a network power supply to continuously maintain the same potential.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种使用能够充分抑制因噪声引起的故障和特性劣化的介电隔离基板的接口装置。解决方案：在其中SOI衬底414被掩埋绝缘膜412和区域绝缘部分410分成半导体支撑衬底区域411，控制器侧区域407和网络侧的接口器件中区域408和电容隔离电路405和406部分地形成在网络侧区域408中，半导体支撑衬底区域411和网络侧区域408连接到网络电源以连续地保持相同的电位。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2005209831A Programmable rom, integrated power supply device and driver integrated circuit 审中-公开
标题翻译：可编程ROM，集成电源设备和驱动器集成电路
公开(公告)号：JP2005209831A
公开(公告)日：2005-08-04
申请号：JP2004013924
申请日：2004-01-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATO KAZUO , SHIRAHAMA HIDEFUMI , SASE TAKASHI
IPC分类号： G11C17/08 , G11C17/18 , H01L27/10
摘要： PROBLEM TO BE SOLVED: To provide a compact, economical programmable ROM which breaks an emitter junction by applying a pulse voltage. SOLUTION: A plurality of writing emitter junctions are disposed in an identical isolation well for miniaturization. It is found out that a high breakdown resistance and low energy region exists where only the designated emitter junction is broken among then and its collector and the adjacent emitter junctions are not affected. From such a viewpoint, a plurality of writing semiconductor junctions are disposed in the identical isolation well. Thus, the economical area of a ROM transistor can be fairly reduced. In particular, an effect in a high voltage transistor process and a multi-bit application is large and an application range is enlarged. Further, as a write current is reduced, a write circuit or a write probe is economical. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种紧凑，经济的可编程ROM，其通过施加脉冲电压来断开发射结。解决方案：将多个写入发射极结设置在相同的隔离阱中以实现小型化。发现存在高耐击穿性和低能量区，其中只有指定的发射极结在其中被破坏，其集电极和相邻的发射极结不受影响。从这样的观点出发，将多个写入半导体结设置在相同的隔离阱中。因此，可以相当地减少ROM晶体管的经济区域。特别地，高压晶体管工艺和多位应用中的效果大，应用范围扩大。此外，随着写入电流的减小，写入电路或写入探头是经济的。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2004064994A Switching power supply and switching power supply system 有权
标题翻译：切换电源和切换电源系统
公开(公告)号：JP2004064994A
公开(公告)日：2004-02-26
申请号：JP2003147151
申请日：2003-05-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YOSHIDA SHINICHI , TAZAWA TOMOHIRO , SASE TAKASHI , TATENO KOJI
IPC分类号： H02M3/137 , H02M3/156 , H02M3/338
CPC分类号： H02M3/1588 , H02M3/1563 , H02M3/3385 , H02M2001/0009 , Y02B70/1466
摘要： PROBLEM TO BE SOLVED: To provide a switching power supply which is excellent in response characteristics to fluctuations of an output current and in which power loss can be reduced. SOLUTION: The switching power supply is composed of a switching regulator in a hysteresis-current mode control method. And, the switching regulator is so constituted that a sense resistance to be connected with a coil in series is removed, instead, a resistance (R1) and a capacitance (C1) in a serial form are connected in parallel with the coil (L1), the switch (SW1) is on/off-controlled by inputting potential of a connecting node (n2) of the resistance and the capacitance to a comparator circuit (H-CMP) having hysteresis characteristics and by comparing it with a reference voltage. COPYRIGHT: (C)2004,JPO
摘要翻译：解决的问题：提供对输出电流的波动的响应特性优异且能够降低功率损耗的开关电源。
解决方案：开关电源由迟滞电流模式控制方式的开关稳压器组成。并且，开关调节器被构造成与串联连接的线圈的感测电阻被去除，而是串联的电阻（R1）和电容（C1）与线圈（L1）并联连接，通过将电阻和电容的连接节点（n2）的电位输入到具有滞后特性的比较器电路（H-CMP）并将其与参考电压进行比较来开关（SW1）。版权所有（C）2004，JPO

10. 发明专利

JP2005184870A Power supply and hard disc drive employing it 有权
标题翻译：使用电源和硬盘驱动器
公开(公告)号：JP2005184870A
公开(公告)日：2005-07-07
申请号：JP2003417425
申请日：2003-12-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASE TAKASHI , KANOUDA TAMAHIKO , HAYASHI KATSUNORI
IPC分类号： G11B33/00 , G05F1/613 , H02M3/155 , H02M3/156
CPC分类号： H02M3/156 , H02M2001/0025
摘要： PROBLEM TO BE SOLVED: To compensate for the influence of a voltage drop appearing in an output voltage due to the equivalent series resistance of a power system output filter in a power supply.
SOLUTION: The power supply comprises a power system output filter passing output power, and first and second filters provided independently from the power system output filter wherein a first filter provided separately is connected with one input of an error amplifier, the difference voltage between the output from a second filter provided separately and the output from a power system output filter is added to a reference voltage to obtain a new reference voltage which is then connected with the other input of the error amplifier thus feeding the output signal back to the error amplifier. According to the arrangement, a voltage drop due to the equivalent series resistance appearing in the output voltage from the power supply can be compensated.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了补偿由于电源中的电力系统输出滤波器的等效串联电阻而在输出电压中出现的电压降的影响。电源包括通过输出功率的电力系统输出滤波器，以及独立于电力系统输出滤波器提供的第一和第二滤波器，其中单独提供的第一滤波器与误差放大器的一个输入端连接，差分电压在单独提供的第二滤波器的输出和来自电力系统输出滤波器的输出之间被添加到参考电压以获得新的参考电压，然后将其连接到误差放大器的另一个输入端，从而将输出信号反馈回到误差放大器根据该结构，可以补偿出现在来自电源的输出电压中的等效串联电阻的电压降。版权所有（C）2005，JPO＆NCIPI

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