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    Power supply device
    4.
    发明授权
    Power supply device 有权
    电源设备

    公开(公告)号：US08680830B2

    公开(公告)日：2014-03-25

    申请号：US13229781

    申请日：2011-09-12

    申请人： Ryotaro Kudo ,  Tomoaki Uno ,  Koji Tateno ,  Hideo Ishii ,  Kazuyuki Umezu ,  Koji Saikusa

    发明人： Ryotaro Kudo ,  Tomoaki Uno ,  Koji Tateno ,  Hideo Ishii ,  Kazuyuki Umezu ,  Koji Saikusa

    IPC分类号： G05F1/00

    CPC分类号： H02M3/158 ,  G06F1/26 ,  H02M3/1584 ,  H02M2003/1586

    摘要： Miniaturization of a multiphase type power supply device can be achieved. A power supply control unit in which, for example, a microcontroller unit, a memory unit and an analog controller unit are formed over a single chip, a plurality of PWM-equipped drive units, and a plurality of inductors configure a multiphase power supply. The microcontroller unit outputs clock signals each having a frequency and a phase defined based on a program on the memory unit to the respective PWM-equipped drive units. The analog controller unit detects a difference between a voltage value of a load and a target voltage value acquired via a serial interface and outputs an error amp signal therefrom. Each of the PWM-equipped drive units drives each inductor by a peak current control system using the clock signal and the error amp signal.

    摘要翻译： 可以实现多相电源装置的小型化。 电源控制单元，其中例如在单个芯片上形成微控制器单元，存储单元和模拟控制器单元，多个配备PWM的驱动单元和多个电感器构成多相电源。 微控制器单元输出每个具有基于存储器单元上的程序定义的频率和相位到相应的配备有PWM的驱动单元的时钟信号。 模拟控制器单元检测负载的电压值与通过串行接口获取的目标电压值之间的差值，并输出误差放大器信号。 每个配备PWM的驱动单元通过使用时钟信号和误差放大器信号的峰值电流控制系统驱动每个电感器。

    Charge Pump Circuit, LCD Driver IC, And Electronic Appliance
    5.
    发明申请
    Charge Pump Circuit, LCD Driver IC, And Electronic Appliance 失效
    电荷泵电路，LCD驱动器IC和电子电器

    公开(公告)号：US20100176872A1

    公开(公告)日：2010-07-15

    申请号：US12067357

    申请日：2006-12-01

    申请人： Koji Saikusa ,  Yasunori Kawamura

    发明人： Koji Saikusa ,  Yasunori Kawamura

    IPC分类号： G05F1/10

    CPC分类号： H02M3/07 ,  G09G3/3696 ,  H02J7/0044 ,  H02M2001/009 ,  H02M2003/072

    摘要： A charge pump circuit 31a of the present invention includes: a step-up capacitor Cc2 charged and discharged in repeated cycles; a charger (SW2a to SW2c) that makes a first end T2a of the step-up capacitor Cc2 conduct to an input voltage VR application terminal and makes a second end T2b of the step-up capacitor Cc2 conduct to a ground terminal GND; a first discharger (SW3a and SW3b) that makes the first end T2a of the step-up capacitor Cc2 conduct to a positive voltage output terminal T3 and makes T2b conduct to VR; a second discharger (SW4a and SW4b) that makes T2a conduct to GND and makes T2b conduct to a negative voltage output terminal T4; a first output capacitor Co1 connected to T3, and a second output capacitor Co2 connected to T4. Each time charging of the step-up capacitor is completed, outputting of a positive voltage by the first discharger and outputting of a negative voltage by the second discharger are alternated. It is preferable that a ratio of the charge period of the step-up capacitor Cc2 to the output periods of the output voltages VGH and VGL be variably controlled. It is preferable that, between the backgate of the SW2c and GND, a switch SW5a be connected that is kept on when the step-up capacitor Cc2 is charged and is kept off otherwise.

    摘要翻译： 本发明的电荷泵电路31a包括：重复循环充放电的升压电容器Cc2; 使升压电容器Cc2的第一端T2a的导通电压VR施加端子的升压电容器Cc2的第二端T2b导通到接地端子GND的充电器（SW2a〜SW2c） 使升压电容器Cc2的第一端T2a导通到正电压输出端子T3并使T2b导通到VR的第一放电器（SW3a，SW3b） 使T2a导通到GND并使T2b导通到负电压输出端子T4的第二放电器（SW4a和SW4b）; 连接到T3的第一输出电容器Co1和连接到T4的第二输出电容器Co2。 每当升压电容器的充电完成时，由第一放电器输出正电压并由第二放电器输出负电压。 优选地，升压电容器Cc2的充电周期与输出电压VGH和VGL的输出周期的比率可以被可变地控制。 优选地，在SW2c的背栅和GND之间，连接升压电容器Cc2被充电时保持接通的开关SW5a，否则保持关闭。