Control circuit for switching power supply
    1.
    发明授权
    Control circuit for switching power supply 有权
    开关电源控制电路

    公开(公告)号:US08716995B2

    公开(公告)日:2014-05-06

    申请号:US13298695

    申请日:2011-11-17

    申请人: Tsutomu Ishino

    发明人: Tsutomu Ishino

    IPC分类号: G05F1/00

    摘要: An error amplifier generates an error signal VERR that corresponds to the difference between a feedback signal VFB and a predetermined reference voltage VREF. A first oscillator generates a first cyclic signal VOSC1 having a sloping segment and a first frequency. A second oscillator generates a second cyclic signal VOSC2 having a sloping segment and a second frequency that is lower than the first frequency. A first pulse modulator generates a first pulse signal having a pulse width that corresponds to the error signal VERR, and clamps its pulse width such that it does not become smaller than a first minimum pulse width. A second pulse modulator generates a second pulse signal having a pulse width that corresponds to the error signal VERR. A synthesizing unit combines the first pulse signal and the second pulse signal so as to generate a driving pulse signal.

    摘要翻译: 误差放大器产生对应于反馈信号VFB和预定参考电压VREF之间的差的误差信号VERR。 第一振荡器产生具有倾斜段和第一频率的第一循环信号VOSC1。 第二振荡器产生具有低于第一频率的倾斜段和第二频率的第二循环信号VOSC2。 第一脉冲调制器产生具有对应于误差信号VERR的脉冲宽度的第一脉冲信号,并且钳位其脉冲宽度,使得其不变得小于第一最小脉冲宽度。 第二脉冲调制器产生具有对应于误差信号VERR的脉冲宽度的第二脉冲信号。 合成单元组合第一脉冲信号和第二脉冲信号以产生驱动脉冲信号。

    Circuit Protection Method, Protection Circuit and Power Supply Device Using The Protection Circuit
    2.
    发明申请
    Circuit Protection Method, Protection Circuit and Power Supply Device Using The Protection Circuit 审中-公开
    电路保护方法,保护电路和使用保护电路的电源设备

    公开(公告)号:US20070206338A1

    公开(公告)日:2007-09-06

    申请号:US11659780

    申请日:2005-07-07

    申请人: Tsutomu Ishino

    发明人: Tsutomu Ishino

    IPC分类号: H02H9/02

    CPC分类号: G05F1/575

    摘要: An excess current protection circuit which can change a limited current corresponding to an output voltage by simple constitution. A power supply device (100) is provided with a regulator (10), which regulates the output voltage to be constant based on a reference voltage, and an excess current protection circuit (20). The regulator (10) is a general three-terminal regulator which includes an output transistor (14), an error amplifier (12) and resistors (R1, R2). The excess current protection circuit (20) detects an output current (lout) by a first transistor (M1), and converts it into a voltage by a variable resistor (Rvar). A voltage comparator (24) compares the voltage with a threshold voltage (Vth) corresponding to a limited current and detects an excess current status. A current adjusting circuit (26) drops driving performance of the regulator (10) when the excess current status is detected, and protects the circuit. The resistance value of the variable resistor (Rvar) is set based on an output voltage (Vout), and a value of the limited current is changed corresponding to the output voltage.

    摘要翻译: 可以通过简单的结构改变对应于输出电压的有限电流的过电流保护电路。 电源装置(100)具有调节器(10),其基于参考电压将输出电压调节为恒定;以及过电流保护电路(20)。 调节器(10)是通用三端稳压器,其包括输出晶体管(14),误差放大器(12)和电阻器(R 1,R 2)。 过电流保护电路(20)通过第一晶体管(M1)检测输出电流(lout),并通过可变电阻器(Rvar)将其转换成电压。 电压比较器(24)将电压与对应于限制电流的阈值电压(Vth)进行比较,并检测过电流状态。 当检测到过电流状态时,电流调节电路(26)降低调节器(10)的驱动性能,并保护电路。 基于输出电压(Vout)设定可变电阻器(Rvar)的电阻值,并且根据输出电压改变受限电流的值。

    Power supply unit and portable apparatus using the same
    3.
    发明申请
    Power supply unit and portable apparatus using the same 有权
    电源单元和使用其的便携式设备

    公开(公告)号:US20050189931A1

    公开(公告)日:2005-09-01

    申请号:US11005953

    申请日:2004-12-07

    申请人: Tsutomu Ishino

    发明人: Tsutomu Ishino

    CPC分类号: H02M3/1584 H02M2001/0045

    摘要: A power supply unit comprises a series regulator and a switching DC-DC converter controlled by a PWM signal and connected in parallel with the series regulator, which are switchably enabled by a mode instruction signal depending on the magnitude of a load current. In switching the series regulator and the DC-DC converter, they are simultaneously enabled for a predetermined overlapping time. Further, in changing the operating condition of the DC-DC converter, the width of the PWM signal is shortened to extend the dead time of the DC-DC converter by a predetermined period, thereby suppressing free oscillations and accompanying overshoots that could take place in the power supply unit during switching.

    摘要翻译: 电源单元包括串联调节器和由PWM信号控制并与串联调节器并联连接的开关DC-DC转换器,其可根据负载电流的大小由模式指令信号切换使能。 在串联调节器和DC-DC转换器的切换中,它们同时使能预定的重叠时间。 此外,在改变DC-DC转换器的工作状态时,PWM信号的宽度被缩短以将DC-DC转换器的死区时间延长预定的周期,从而抑制可能发生的自由振荡和伴随的过冲 电源单元在切换期间。

    Forward/reverse drive and stop control system for hydrostatic
-mechanical transmissions
    4.
    发明授权
    Forward/reverse drive and stop control system for hydrostatic -mechanical transmissions 失效
    用于静液压机械变速器的前进/后退驱动和停止控制系统

    公开(公告)号:US5529546A

    公开(公告)日:1996-06-25

    申请号:US392543

    申请日:1995-02-21

    摘要: A control system in which a judgment is made such that (i) a vehicle is in a forward drive control state, on condition that the forward/reverse drive lever is placed in the forward drive position and the actual speed ratio exceeds a specified small value in a forward drive direction, (ii) the vehicle is in a reverse drive control state on condition that the lever is placed in the reverse drive position and the actual speed ratio exceeds a specified small value in a reverse drive direction, (iii) the vehicle is in an engine brake control state, on condition that the lever is placed in the neutral position and the actual speed ratio exceeds the specified small value in the forward or reverse drive direction, (iv) the vehicle is in an FR shift control state, on condition that the lever is placed in the forward or reverse drive position and the actual speed ratio exceeds the specified small value in the reverse or forward drive direction, and (v) the vehicle is in a neutral control state, on condition that the lever is placed in the neutral position and the actual speed ratio does not exceed the specified small values in the forward and reverse drive directions.

    摘要翻译: 一种控制系统,其判断为:(i)车辆处于正向驱动控制状态,条件是前进/后退驱动杆处于向前驱动位置,并且实际速度比超过规定的小值 (ii)车辆处于倒档驱动控制状态,条件是杆处于倒档驱动位置,实际速比在反向驱动方向上超过规定的小值,(iii) 车辆处于发动机制动控制状态,条件是杠杆处于中立位置,并且实际变速比在正向或反向驱动方向上超过规定的小值,(iv)车辆处于FR档位控制状态 在操纵杆处于正向或反向驱动位置并且实际变速比在反向或向前驱动方向上超过规定的小值的条件下,以及(v)车辆处于空档控制状态, 条件是杠杆处于中立位置,实际变速比不超过正向和反向驱动方向上规定的小值。

    Driving control device of a crawler type tractor
    5.
    发明授权
    Driving control device of a crawler type tractor 失效
    履带式拖拉机的驱动控制装置

    公开(公告)号:US4699239A

    公开(公告)日:1987-10-13

    申请号:US622794

    申请日:1984-06-21

    摘要: A driving control device in a crawler type tractor comprises a lever capable of being operated in the forward or reverse (backward) direction and capable of being operated in the right or left direction when the lever is operated so as to move to the end of the forward or reverse direction, and a speed-stage command device capable of generating and transmitting commands for speed stages for the forward and the reverse directions. When a first sensor detects the lever operation in the forward or reverse direction; the transmission speed stages can be selected in accordance with the first sensor output and the output of the speedstage command device, and the operation amount of the lever in the right or left direction is detected by a second sensor so that steering clutches of the tractor can be controlled in accordance with the output of the second sensor.

    摘要翻译: 一种履带式拖拉机中的驱动控制装置,包括能够在向前或向后(向后)方向上操作的杆,并且当杠杆操作时能够在右方向或左方向上操作,以便移动到 以及能够产生和发送用于正向和反向的速度级的命令的速度级命令装置。 当第一传感器在正向或反向方向上检测到操作杆时; 可以根据速度指令装置的第一传感器输出和输出来选择传动速度级,并且通过第二传感器检测杠杆在左右方向上的操作量,使得拖拉机的转向离合器可以 根据第二传感器的输出进行控制。

    Control circuit and control method for switching power supply, and switching power supply and electronic apparatus using control circuit and control method
    6.
    发明授权
    Control circuit and control method for switching power supply, and switching power supply and electronic apparatus using control circuit and control method 有权
    用于开关电源的控制电路和控制方法,以及使用控制电路和控制方法的开关电源和电子设备

    公开(公告)号:US08912777B2

    公开(公告)日:2014-12-16

    申请号:US13586289

    申请日:2012-08-15

    申请人: Tsutomu Ishino

    发明人: Tsutomu Ishino

    IPC分类号: G05F1/00 H02M3/156 H02M1/00

    摘要: The present invention improves the efficiency of a switching power supply in a light load. A control circuit is configured to repeat a driving duration enabling the switching element to be switched and a stop duration stopping the switching in a light load state. A pulse signal generating portion generates a driving pulse signal, in which the driving pulse signal at least includes a pulse in the driving duration, and the lighter a load is, the less the number of pulses in the driving duration is. A first driver drives a first switching transistor according to the at least one pulse in the driving pulse signal other than predetermined K pulses (K is a natural number). The K pulses are in the driving pulse signal when the number of the pulses is reduced to K.

    摘要翻译: 本发明提供了轻负载时开关电源的效率。 控制电路被配置为重复启用开关元件的驱动持续时间,并且在轻负载状态下停止切换的停止持续时间。 脉冲信号产生部分产生驱动脉冲信号,其中驱动脉冲信号至少包括驱动持续时间中的脉冲,负载越轻,驱动持续时间中的脉冲数越少。 第一驱动器根据除了预定的K个脉冲之外的驱动脉冲信号中的至少一个脉冲驱动第一开关晶体管(K是自然数)。 当脉冲数减少到K时,K脉冲处于驱动脉冲信号中。

    Charging circuit
    7.
    发明授权
    Charging circuit 有权
    充电电路

    公开(公告)号:US08786247B2

    公开(公告)日:2014-07-22

    申请号:US13232159

    申请日:2011-09-14

    摘要: A charging circuit receives electric power from a solar battery, and charges a secondary battery. A charging current detection unit generates a detection signal that corresponds to a charging current supplied from a DC/DC converter to the secondary battery. A control circuit generates a reference voltage that corresponds to the detection signal. A driving unit generates a pulse signal having a duty ratio that is adjusted such that the voltage output from the solar battery matches the reference voltage, and performs switching of a switching transistor according to the pulse signal. A control circuit adjusts the reference voltage such that the reference voltage becomes greater.

    摘要翻译: 充电电路从太阳能电池接收电力,并对二次电池充电。 充电电流检测单元产生与从DC / DC转换器提供给二次电池的充电电流对应的检测信号。 控制电路产生对应于检测信号的参考电压。 驱动单元产生具有调节使得从太阳能电池输出的电压与参考电压相匹配的占空比的脉冲信号,并且根据脉冲信号执行开关晶体管的切换。 控制电路调节参考电压,使得参考电压变大。

    Semiconductor Device, Power Supply Apparatus Using Same, and Electronic Device
    8.
    发明申请
    Semiconductor Device, Power Supply Apparatus Using Same, and Electronic Device 审中-公开
    半导体装置,使用其的电源装置和电子装置

    公开(公告)号:US20070262448A1

    公开(公告)日:2007-11-15

    申请号:US11660481

    申请日:2005-07-07

    申请人: Tsutomu Ishino

    发明人: Tsutomu Ishino

    IPC分类号: H01L23/48

    摘要: A semiconductor device capable of suppressing diffusion of noise signals is provided. The semiconductor device has a BGA (Ball Grid Array) structure in which a plurality of electrode terminals to do input and/or output of signals from and to the outside is arranged in a matrix form. The semiconductor device includes a noise source electrode terminal to do input and/or output of signals, and low-impedance electrode terminals. The noise source electrode terminal does input and/or output of signals acting as a source of noises. The low-impedance electrode terminal are arranged so as to be adjacent to the noise source electrode terminal in a vertical or horizontal direction. The low-impedance electrode terminal is arranged so as to be adjacent to the noise source electrode terminal in a slanting direction. In order to make the low-impedance electrode terminals and be of a low impedance, these terminals and are connected to a grounding potential and connected through a capacitor having a large capacitance to the grounding potential. If necessary, the low-impedance electrode terminals are arranged in a place surrounding the electrode terminal that is susceptible to noises.

    摘要翻译: 提供能够抑制噪声信号扩散的半导体器件。 半导体器件具有BGA(球栅阵列)结构,其中多个电极端子进行来自外部的信号的输入和/或输出以矩阵形式布置。 半导体器件包括用于进行信号的输入和/或输出的噪声源电极端子和低阻抗电极端子。 噪声源电极端子作为噪声源的信号进行输入和/或输出。 低阻抗电极端子被布置成在垂直或水平方向上与噪声源电极端子相邻。 低阻抗电极端子被布置成在倾斜方向上与噪声源电极端子相邻。 为了使低阻抗电极端子和低阻抗,这些端子连接到接地电位,并通过具有大电容的电容器连接到接地电位。 如果需要,低阻抗电极端子布置在易受噪声影响的电极端子周围的位置。

    Steering system for use in a track-laying vehicle
    9.
    发明授权
    Steering system for use in a track-laying vehicle 失效
    用于轨道铺放车辆的转向系统

    公开(公告)号:US5535840A

    公开(公告)日:1996-07-16

    申请号:US268931

    申请日:1994-06-30

    摘要: A steering system for use in a track-laying vehicle comprising: a steering motor that is forwardly and reversely rotatable and designed to drive crawler belts provided at both sides of the vehicle such that a relative travel difference is caused between the crawler belts, thereby turning the vehicle rightwards or leftwards; a forward/reverse drive state detector for detecting whether the vehicle is in its forward drive state or reverse drive state; a lateral turn instructing device for instructing right turn or left turn of the vehicle; and a steering motor forward/reverse rotation control unit for determining the forward or reverse rotation of the steering motor in accordance with the forward or reverse drive state of the vehicle detected by the forward/reverse drive state detector, such that the vehicle turns to the right or left in response to a right turn instruction or left turn instruction released from the lateral turn instructing device.

    摘要翻译: 一种用于轨道铺放车辆的转向系统,包括:前进和反向转动的转向电动机,其设计成驱动设在车辆两侧的履带,从而在履带之间产生相对行驶差,由此转动 车辆向右或向左; 前进/后退驱动状态检测器,用于检测车辆是否处于其前进驱动状态或反向驱动状态; 用于指示车辆的右转或左转的横向转向指示装置; 以及转向电动机正向/反向旋转控制单元,用于根据由前进/后退驱动状态检测器检测到的车辆的前进或后退驱动状态来确定转向电动机的正向或反向旋转,使得车辆转向 响应于从横向转向指示装置释放的右转指令或左转指令,右或左。