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1. 发明专利

JP2007236124A Power supply and method of supplying power 有权
标题翻译：电力供应及供电方法
公开(公告)号：JP2007236124A
公开(公告)日：2007-09-13
申请号：JP2006055413
申请日：2006-03-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KAWAKUBO YOSUKE , INOUE TETSUYA , SONE MASAHIRO , SUZUKI HIROSHI
IPC分类号： H02J9/06 , G05F1/00 , G06F1/26 , H02J1/00 , H02J1/10
CPC分类号： G06F11/2015 , G06F1/263 , G06F1/30 , G06F11/201 , G06F11/2089 , Y10T307/305 , Y10T307/344 , Y10T307/391 , Y10T307/544 , Y10T307/696 , Y10T307/858
摘要： PROBLEM TO BE SOLVED: To supply power with high reliability while suppressing cost increase even when a large number of load groups exist. SOLUTION: Each normal power supply unit 1A, 1B normally supplies power to each load group 2A, 2B through a normal route 7A, 7B. Only one redundant power supply unit 1C is provided for a plurality of normal power supply units 1A and 1B. When any one of the normal power supply units 1A and 1B fails, the redundant power supply unit 1C continues power supply to the load group 2A or 2B through a redundant route 8A, 8B. A diode D2 for connecting the redundant route with the normal route is provided in each normal power supply unit 1A, 1B, and the redundant route passing each normal power supply unit 1A, 1B is connected while intersecting between the normal power supply units 1A and 1B. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使存在大量负载组，也可以在抑制成本增加的同时提供高可靠性的电力。
解决方案：每个正常供电单元1A，1B通常通过正常路线7A，7B向每个负载组2A，2B供电。仅为多个正常供电单元1A和1B提供一个冗余电源单元1C。当正常供电单元1A和1B中的任何一个发生故障时，冗余电源单元1C通过冗余路线8A，8B继续向负载组2A或2B供电。在每个正常供电单元1A，1B中设置用于将冗余路径与正常路径连接的二极管D2，并且通过每个正常供电单元1A，1B的冗余路径连接在正常供电单元1A和1B之间。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2005228254A Memory device 审中-公开
标题翻译：内存设备
公开(公告)号：JP2005228254A
公开(公告)日：2005-08-25
申请号：JP2004038599
申请日：2004-02-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KAWAKUBO YOSUKE
IPC分类号： G06F1/26 , G06F11/00
CPC分类号： G06F11/2015 , G06F1/30 , G06F11/1441
摘要： PROBLEM TO BE SOLVED: To provide a feeding technology of memory storage in which feeding from optimum power source can be performed according to operating mode of cache memories and by which feeding with less voltage variation and with high voltage accuracy can be realized while being able to perform especially steady switching of feeding route. SOLUTION: A feeding system 1 in a RAID system having hardware disk drives 11, disk adapters 12, channel adapters 13, and cache memories 14 etc. is provided with DC-DC power sources(2) 23 which supply the cache memories 14 with voltage of normal operating mode writing/reading data to the cache memories 14, and DC-DC power sources(3) 24 which supply the cache memories 14 with voltage of back-up operating mode holding data stored in the cache memories 14, and performs feeding by switching these power sources according to operating mode of the cache memories 14. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种存储器存储器的馈电技术，其中可以根据高速缓存存储器的操作模式进行从最佳电源馈送，并且可以实现具有较低电压变化和高电压精度的馈电，能够进行特别稳定的进给路线切换。解决方案：具有硬盘驱动器11，盘适配器12，通道适配器13和高速缓冲存储器14等的RAID系统中的馈送系统1设置有DC-DC电源（2）23，DC-DC电源（2）23向高速缓冲存储器在具有向高速缓冲存储器14写入/读取数据的正常工作模式的电压的情况下，向高速缓冲存储器14提供保存在高速缓存存储器14中的备用操作模式保持数据的电压的DC-DC电源（3）并根据高速缓存存储器14的工作模式切换这些电源来进行馈送。（C）2005年，JPO＆NCIPI

3. 发明专利

JP2007282407A Driving method of storage device and disk subsystem having storage device 有权
标题翻译：存储设备的驱动方法和具有存储设备的盘子系统
公开(公告)号：JP2007282407A
公开(公告)日：2007-10-25
申请号：JP2006106877
申请日：2006-04-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： INOUE TETSUYA , SUZUKI HIROSHI , SONE MASAHIRO , KAWAKUBO YOSUKE , NAGAMORI TOSHIYUKI
IPC分类号： H02J1/00
CPC分类号： G06F11/2015
摘要： PROBLEM TO BE SOLVED: To provide a storage device whose reliability is improved in supplying power to a plurality of storage mediums. SOLUTION: The storage device is provided with: a plurality of hard disks 37 arranged by making every eight disks into a group; a plurality of power supplies 39 supplying power to the eight hard disks belonging to each group; and a redundant power supply 39R connected to the power supplies 39 in parallel. At abnormal time of one of a plurality of power supplies 39, power is supplied to the eight hard disks 37 connected to the power supplies 39 where abnormality occurs from the redundant power supply 39R. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种在向多个存储介质供电方面提高可靠性的存储装置。解决方案：存储装置设置有：通过使每八个磁盘组成一组而布置的多个硬盘37; 多个电源39向属于每个组的八个硬盘供电; 以及并联连接到电源39的冗余电源39R。在多个电源39中的一个电源39的异常时，电力被提供给连接到电源39的八个硬盘37，该冗余电源39R发生异常。版权所有（C）2008，JPO＆INPIT

4. 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

5. 发明专利

JP2009027773A Power unit, ic circuit, information processor, and soft start control method 审中-公开
标题翻译：电源单元，IC电路，信息处理器和软启动控制方法
公开(公告)号：JP2009027773A
公开(公告)日：2009-02-05
申请号：JP2007185863
申请日：2007-07-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASE TAKASHI , KAWAKUBO YOSUKE , KURITA KOZABURO
IPC分类号： H02M3/155
CPC分类号： H02M1/36 , H02M3/156 , H02M2001/0009
摘要： PROBLEM TO BE SOLVED: To provide a soft start method and a soft start circuit for a power unit which is suitable for an on-chip power source that does not need an external capacitor at soft start.
SOLUTION: The power unit detects a current, which flows to an upper power MOSFET at soft start, with the ON voltage of the MOSFET, and forcibly resets, the ON pulse width of PWM pulses, which drives an upper power MOSFET, by a signal which is generated when this voltage drops under a specified voltage.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供适用于在软启动时不需要外部电容器的片上电源的功率单元的软启动方法和软启动电路。
解决方案：功率单元通过MOSFET的导通电压检测到软启动时流向上功率MOSFET的电流，并强制复位驱动上功率MOSFET的PWM脉冲的导通脉冲宽度，通过当该电压在指定电压下降时产生的信号。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2008113542A Digital control switching power supply and information processing apparatus 有权
标题翻译：数字控制切换电源和信息处理设备
公开(公告)号：JP2008113542A
公开(公告)日：2008-05-15
申请号：JP2007201087
申请日：2007-08-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASE TAKASHI , KAWAKUBO YOSUKE
IPC分类号： H02M3/155
CPC分类号： H02M3/157
摘要： PROBLEM TO BE SOLVED: To provide a digital control switching power supply which is suitable for high-speed response to sharp load changes. SOLUTION: In addition to the output of a PWM pulse signal of desired duty by normal digital signal processing, a transient change detection means, comprising a CR filter installed across an output inductor and window comparators, is provided in parallel; and when a sharp load change is detected, the PWM pulse signal of 0% duty or 100% duty is forcedly outputted, at sharp load decrease or sharp load increase, respectively. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种适用于高速响应急剧负载变化的数字控制开关电源。
解决方案：除了通过正常数字信号处理输出所需占空比的PWM脉冲信号之外，并联提供包括安装在输出电感器和窗口比较器两端的CR滤波器的瞬态变化检测装置，并且当检测到急剧的负载变化时，强制输出0％占空比或100％占空比的PWM脉冲信号，分别在急剧负载下降或急剧增加负载时。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007159176A Power unit 有权
标题翻译：动力单元
公开(公告)号：JP2007159176A
公开(公告)日：2007-06-21
申请号：JP2005346629
申请日：2005-11-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASE TAKASHI , KANOUDA TAMAHIKO , KAWAKUBO YOSUKE
IPC分类号： H02M3/155 , G01R31/28 , G01R31/30
CPC分类号： H02M3/156 , H02M2001/0025
摘要： PROBLEM TO BE SOLVED: To provide a power unit which is equipped with a margin check voltage setting circuit that is easily miniaturized and integrated.
SOLUTION: This power unit has a margin check voltage setting circuit which sets desired margin check voltage by inputting reference voltage, an error amplifier which receives the input of the margin check voltage and the output voltage of itself and outputs the difference between both as an error signal, a pulse width modulating oscillator which modulates the pulse width of the output of the above error amplifier, a driving circuit which generates a drive signal by the pulse signal from the pulse width modulating oscillator, and a pair of power semiconductor switching elements which step down the input voltage, based on the drive signal from the driving circuit, and generate output voltage. The output end of the margin check voltage setting circuit is provided with an overvoltage detecting circuit which sets comparative voltage for overvoltage detection and a power good circuit which sets comparative voltage for determining power good.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种配备有容易小型化和集成的边缘检查电压设置电路的电源单元。
解决方案：该电源单元具有通过输入参考电压设置所需余量检查电压的余量检查电压设置电路，接收余量检查电压输入和自身输出电压的误差放大器，并输出两者之间的差值作为误差信号，调制上述误差放大器的输出的脉冲宽度的脉宽调制振荡器，通过来自脉宽调制振荡器的脉冲信号产生驱动信号的驱动电路和一对功率半导体开关基于来自驱动电路的驱动信号降低输入电压的元件，并产生输出电压。边缘检查电压设定电路的输出端设有过电压检测电路，设置过电压检测的比较电压和设定比较电压以确定电源良好的电源良好电路。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2004180500A Disk memory system 有权
公开(公告)号：JP2004180500A
公开(公告)日：2004-06-24
申请号：JP2004010009
申请日：2004-01-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KAWAKUBO YOSUKE , HAYASHI KATSUNORI , KUROSAWA HIROYUKI
IPC分类号： G11B33/00 , H02M3/00
摘要： PROBLEM TO BE SOLVED: To provide a disk memory system, having an electric power supply unit obtaining stable output voltage without having to depend on a load current, by using a circuit constitution with no short-circuiting impediment element in the output of the electric power supply unit, and correcting a voltage drop of the output voltage caused by a voltage drop element of an output diode, transistor, etc.
SOLUTION: A means, with respect to a voltage drop of the output diode or the like, having an element (diode, transistor, etc.) approximating the characteristics of this diode, and generating a control voltage for correcting the voltage drop, is provided. The voltage obtained by this means is added to the reference voltage for setting the output voltage.
COPYRIGHT: (C)2004,JPO

9. 发明专利

JP2002313013A POWER SOURCE FOR MAGNETIC DISK UNIT 失效
公开(公告)号：JP2002313013A
公开(公告)日：2002-10-25
申请号：JP2001112842
申请日：2001-04-11
申请人： HITACHI LTD
发明人： HAYASHI KATSUNORI , KAWAKUBO YOSUKE
IPC分类号： G06F1/26 , G11B19/00 , H02J1/00 , H02J7/34
摘要： PROBLEM TO BE SOLVED: To realize a small and inexpensive power source for a magnetic disk device corresponding to a loading state or an operation state where a remarkable large difference of output currents is made at an idle time and a seeking time with a group of magnetic disk units as a load. SOLUTION: In a stabilized power source for supplying power to the group of magnetic disk devices 19, the power source being a switching power source supplies power by the single operation of a single device and the parallel operation of the two or more devices and the power source is provided with an electric load compensation circuit 11 for compensating and supplying the output current of the power source. The electric charge compensation circuit compensates and supplies the part of current exceeding a prescribed threshold larger than a stationary current within an output current obtained by adding temporarily excessive current for the mechanical operation of the group of the magnetic disk units to a stationary current to be consumed by the group of the magnetic disks units.

10. 发明专利

JP2003189600A POWER DEVICE AND POWER SYSTEM HAVING THE DEVICE AS UNIT 审中-公开
公开(公告)号：JP2003189600A
公开(公告)日：2003-07-04
申请号：JP2002312031
申请日：2002-10-28
申请人： HITACHI LTD
发明人： KAWAKUBO YOSUKE , HAYASHI KATSUNORI , KUROSAWA HIROYUKI
IPC分类号： H02J1/10 , H02M3/155 , H02M7/12
摘要： PROBLEM TO BE SOLVED: To provide a power device unit and a parallel power system capable of correcting the drop of an output voltage caused by voltage-drop elements of an output diode, a transistor and the like by using a circuit constitution that has no short-circuit obstruction element for the output of a power device and obtained a constant output voltage without depending on a load current. SOLUTION: The power device unit comprises elements (diode, transistor and the like) having characteristics similar to those of the diode and the like with respect to voltage drops of the output diode and the like, and also comprises a means that generates a control voltage for correcting the voltage drops. A voltage obtained by the means is added to an output-voltage setting reference voltage. COPYRIGHT: (C)2003,JPO

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