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    • 51. 发明授权
    • Electric power unit
    • 电力单位
    • US5610449A
    • 1997-03-11
    • US517926
    • 1995-08-22
    • Tadashi TakahashiAkihiko KanoudaKazuhiro TakizawaTetsunosuke NakamuraMasami Joraku
    • Tadashi TakahashiAkihiko KanoudaKazuhiro TakizawaTetsunosuke NakamuraMasami Joraku
    • H05K9/00H02J1/00H02M3/00H02M3/28H05K1/02H02J3/12
    • H05K1/0256H02M3/00H05K1/0262H05K2201/09972H05K2201/1003H05K2201/10689Y10T307/50
    • A compact, thin-type, noise-tolerant and highly reliable electric power unit includes an input portion through which a predetermined voltage is applied, a plurality of power circuits for generating a plurality of different voltages from the predetermined voltage applied to said input portion, an output portion for outputting the plurality of different voltages generated in the plurality of power circuits, a control unit having a function to stabilize the plurality of different output voltages, and an insulated substrate which supports the input portion, the plurality of power circuits, the output portion and the control unit, and further has a printed wiring pattern for electrically coupling the constituent components of the electric power unit. By disposing each group of components which compose each of plurality of power circuits into a predetermined area corresponding to each output voltage, or by arranging the components such that the height of each of the plurality of constituent components for the power circuits is adapted to become approximately the same as or less than the height of the transformer, a compact and thin-type elective power unit which is noise-tolerant and highly reliable is achieved.
    • 小型,薄型,耐噪声和高度可靠的电力单元包括施加预定电压的输入部分,用于从施加到所述输入部分的预定电压产生多个不同电压的多个电源电路, 用于输出在多个电源电路中产生的多个不同电压的输出部分,具有稳定多个不同输出电压功能的控制单元,以及支持输入部分的绝缘基板,多个电源电路, 输出部分和控制单元,并且还具有用于电耦合电力单元的组成部件的印刷布线图案。 通过将构成多个电源电路中的每一个的每个组件组分配到与每个输出电压对应的预定区域中,或者通过布置这些组件使得用于电源电路的多个组成部件中的每一个的高度适于变成近似 与变压器的高度相同或小于实现耐噪声和高可靠性的紧凑型薄型选择电力单元。
    • 52. 发明授权
    • Multi-output DC-DC convertor
    • 多输出DC-DC转换器
    • US5559682A
    • 1996-09-24
    • US177961
    • 1994-01-06
    • Akihiko KanoudaTadashi TakahashiHideaki HorieKenichi OndaSyuya Hagiwara
    • Akihiko KanoudaTadashi TakahashiHideaki HorieKenichi OndaSyuya Hagiwara
    • G05F1/56H01F30/00H02M3/28H02M3/335
    • H02M3/33538H02M3/33592H02M2001/009Y02B70/1475
    • A diode, a condenser and a switching element are connected to a primary winding of a flat type transformer such as a wire type transformer. A citation energy discharged during an off-condition of the switching element, namely a reset period of the transformer, is accumulated in the condenser. An output voltage is obtained from the condenser. Two system direct current voltage output can be obtained from one transformer. Since the two system direct current voltage output can be obtained from the transformer having a pair of a primary winding and a secondary winding, the volume and the weight of the transformer can be reduced and the compact and the slim of the machine apparatus being mounted can be contributed. Making the small winding ratio of the transformer, the copper loss of the transformer can be reduced. By using MOS synchronous rectification, the loss in the circuit can be reduced. It is unnecessary to select highly the switching frequency.
    • 二极管,电容器和开关元件连接到诸如线型变压器的扁平型变压器的初级绕组。 在开关元件的断开状态,即变压器的复位期间放电的引用能量积聚在冷凝器中。 从冷凝器获得输出电压。 可以从一个变压器获得两个系统的直流电压输出。 由于可以从具有一对初级绕组和次级绕组的变压器获得两个系统直流电压输出,所以可以减小变压器的体积和重量,并且可以安装机器装置的紧凑型和细长型 贡献。 使变压器的绕组比小,可以减小变压器的铜损。 通过使用MOS同步整流,可以减少电路中的损耗。 没有必要高度选择开关频率。
    • 60. 发明申请
    • Power-Supply Unit, Hard-Disk Drive, and Switching Method of the Power-Supply Unit
    • 电源单元,硬盘驱动器和电源单元的切换方法
    • US20110194206A1
    • 2011-08-11
    • US12869176
    • 2010-08-26
    • Takashi SaseAkihiko KanoudaYosuke Tsuyuki
    • Takashi SaseAkihiko KanoudaYosuke Tsuyuki
    • G11B21/02H02M3/335
    • H02M3/33592H02M2001/0032H02M2001/0048Y02B70/1433Y02B70/1475Y02B70/1491Y02B70/16
    • 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.
    • 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。