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    • 83. 发明授权
    • Step-up converter
    • 升压转换器
    • US07825646B2
    • 2010-11-02
    • US11905399
    • 2007-09-28
    • Takuya IshiiMikio MotomoriJunichi MoritaTakashi RyuMasaaki KotoMakoto IshimaruKazuhito KimuraSatoshi Wada
    • Takuya IshiiMikio MotomoriJunichi MoritaTakashi RyuMasaaki KotoMakoto IshimaruKazuhito KimuraSatoshi Wada
    • G05F1/40
    • H02M3/156
    • The present invention provides a current-mode control step-up converter capable of reducing the minimum duty ratio to a sufficiently small value and facilitating the setting of the maximum duty ratio. The step-up converter comprises a current detector 9 for generating a current detection signal Vc corresponding to the current of a rectifier 4; an error amplifier 8 for generating an error signal Ve corresponding to an output DC voltage Vo; and a control circuit 10 for turning ON/OFF the main switch 3 on the basis of the current detection signal Vc and the error signal Ve. The control circuit 10 comprises a comparator 11 and a timer circuit 12. With this configuration, the ON time of the main switch 3 is set at a predetermined value, and the valley value of an inductor current changing in a triangular waveform is controlled. Hence, the OFF time of the main switch is adjusted to stabilize the output. Since the ON time of the main switch 3 can be set as desired, the minimum duty ratio can be reduced to zero or a sufficiently small value.
    • 本发明提供了一种电流模式控制升压转换器,其能够将最小占空比降低到足够小的值,并且有助于设定最大占空比。 升压转换器包括用于产生与整流器4的电流相对应的电流检测信号Vc的电流检测器9; 用于产生对应于输出DC电压Vo的误差信号Ve的误差放大器8; 以及用于根据电流检测信号Vc和误差信号Ve导通/断开主开关3的控制电路10。 控制电路10包括比较器11和定时器电路12.通过这种配置,主开关3的接通时间被设定为预定值,并且控制以三角波形变化的电感器电流的谷值。 因此,主开关的断开时间被调节以稳定输出。 由于可以根据需要设定主开关3的导通时间,所以可以将最小占空比降低到零或足够小的值。
    • 86. 发明授权
    • Multi-output power supply apparatus
    • 多输出电源装置
    • US07586212B2
    • 2009-09-08
    • US11902880
    • 2007-09-26
    • Junichi MoritaTakuya IshiiMikio Motomori
    • Junichi MoritaTakuya IshiiMikio Motomori
    • H04B15/00G05F1/577H03L5/00
    • H02J1/08H02J1/108H02J2001/008Y10T307/352Y10T307/707
    • The present invention provides an efficient multi-output power supply apparatus that enables a reduction in the on voltage of a main switch in a step-down power supply circuit or the like over a wide input range from a low input to a high input. The power supply apparatus includes a first power supply circuit that increases an input voltage from an input power source to output a first output voltage Vo1, and a second power supply circuit that outputs a second output voltage Vo2 obtained from the input voltage via a main switch circuit connected to the input power source. The main switch circuit having a first switch element that is a PMOS transistor and a second switch element that is an NMOS transistor connected to each other in parallel. The first output voltage Vo1 is applied to a gate of the second switch element.
    • 本发明提供了一种有效的多输出电源装置,其能够在从低输入到高输入的宽输入范围内降低降压电源电路等中的主开关的导通电压。 电源装置包括:第一电源电路,其从输入电源增加输入电压以输出第一输出电压Vo1;以及第二电源电路,其经由主开关输出从输入电压获得的第二输出电压Vo2 电路连接到输入电源。 主开关电路具有作为PMOS晶体管的第一开关元件和作为彼此并联连接的NMOS晶体管的第二开关元件。 第一输出电压Vo1被施加到第二开关元件的栅极。
    • 87. 发明授权
    • Step-up power supply device
    • 升压电源装置
    • US07567069B2
    • 2009-07-28
    • US11898701
    • 2007-09-14
    • Takashi RyuTakuya IshiiMikio MotomoriKazuhito KimuraSatoshi WadaRumi Nakai
    • Takashi RyuTakuya IshiiMikio MotomoriKazuhito KimuraSatoshi WadaRumi Nakai
    • G05F1/40H02M3/18
    • H02M1/36Y10S323/901
    • A step-up power supply device includes: a step-up converter; a startup circuit which controls the on/off operation of a switch element of the step-up converter when an output voltage of the device is smaller than a reference voltage; and a control circuit which operates in substitution for the startup circuit when the output voltage is higher than the reference voltage to control the on/off operation of the switch element such that the output voltage reaches a target value. The startup circuit includes an oscillation circuit for generating a pulse signal which has a predetermined on/off ratio, a current comparison circuit for comparing a current of the switch element with a predetermined restriction value, and a drive circuit for generating a drive signal based on which the switch element is turned on/off, the drive signal being generated from the pulse signal to turn on the switch element, and the drive signal being generated from the output of the current comparison circuit or the pulse signal to turn off the switch element.
    • 升压电源装置包括:升压转换器; 启动电路,当所述器件的输出电压小于参考电压时,控制所述升压转换器的开关元件的接通/断开操作; 以及控制电路,其在输出电压高于基准电压时代替启动电路,以控制开关元件的导通/截止操作,使得输出电压达到目标值。 启动电路包括用于产生具有预定的导通/关断比的脉冲信号的振荡电路,用于将开关元件的电流与预定限制值进行比较的电流比较电路,以及用于产生基于 所述开关元件被接通/断开,所述驱动信号从所述脉冲信号产生,以接通所述开关元件,并且所述驱动信号是从所述当前比较电路的输出或所述脉冲信号产生的,以将所述开关元件 。
    • 89. 发明申请
    • Speed change apparatus
    • 变速装置
    • US20090170652A1
    • 2009-07-02
    • US12314057
    • 2008-12-03
    • Takuya IshiiMinoru Todo
    • Takuya IshiiMinoru Todo
    • F16H3/44
    • F16H3/666F16D13/683F16D25/0638F16D25/10F16D2048/0212F16H3/663F16H2200/006F16H2200/0086F16H2200/2007F16H2200/2046F16H2200/2048
    • A speed change apparatus includes a first clutch having a first clutch drum, in which an annular clutch plate is spline-fitted to an inner peripheral surface of the first clutch drum, and a clutch piston formed with a spline on an inner peripheral surface of the clutch piston is provided to slide in an axial direction and press the clutch plate; and a second clutch having a second clutch drum, which is disposed in the clutch piston of the first clutch concentrically with the first clutch, and in which a spline is formed on inner and outer peripheral surfaces of the second clutch drum such that outer peripheral surface spline teeth form inner peripheral surface spline grooves. Wherein the outer peripheral surface of the second clutch drum is spline-fitted to the inner peripheral surface of the clutch piston and an annular clutch plate is spline-fitted to the inner peripheral surface of the second clutch drum.
    • 一种变速装置包括:具有第一离合器鼓的第一离合器,其中环形离合器片花键配合到第一离合器鼓的内周面;以及离合器活塞,其在所述第一离合器的内周面上形成有花键 离合器活塞设置成沿轴向滑动并按压离合器板; 以及具有第二离合器鼓的第二离合器,所述第二离合器鼓与所述第一离合器同心地配置在所述第一离合器的离合器活塞中,并且在所述第二离合器鼓的内周面和外周面上形成有花键, 花键齿形成内周面花键槽。 其中第二离合器鼓的外周表面花键配合到离合器活塞的内周表面,并且环形离合器片花键配合到第二离合器鼓的内周表面。
    • 90. 发明授权
    • DC-DC converter and control circuit thereof
    • DC-DC转换器及其控制电路
    • US07550957B2
    • 2009-06-23
    • US11545050
    • 2006-10-06
    • Takuya IshiiHiroki AkashiMakoto IshimaruYoshiyuki Konishi
    • Takuya IshiiHiroki AkashiMakoto IshimaruYoshiyuki Konishi
    • G05F1/40
    • H02M3/1563
    • The present invention is intended to provide a DC-DC converter, in which the relationship between the duty ratio of a drive signal and the output DC voltage is nonlinear, being characterized in that the relationship between an error signal and the output DC voltage is linear, and that the design of stabilizing the feedback system is facilitated. The DC-DC converter comprises an error-amplifier circuit for generating the error signal that is obtained by amplifying the error between the output and a target value, an oscillating circuit for generating a triangular wave signal having an amplitude corresponding to the error signal, and a comparison circuit for comparing the triangular wave signal with a reference signal having a predetermined value and for generating the drive signal to turn ON/OFF a switching device.
    • 本发明旨在提供一种DC-DC转换器,其中驱动信号的占空比与输出DC电压之间的关系是非线性的,其特征在于误差信号与输出DC电压之间的关系是线性的 并且促进了稳定反馈系统的设计。 DC-DC转换器包括用于产生通过放大输出与目标值之间的误差而获得的误差信号的误差放大器电路,产生具有对应于误差信号的振幅的三角波信号的振荡电路,以及 比较电路,用于将三角波信号与具有预定值的参考信号进行比较,并产生用于导通/关断开关装置的驱动信号。