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    • 72. 发明授权
    • Controller for DC-DC converter
    • DC-DC转换器控制器
    • US06194875B1
    • 2001-02-27
    • US09414432
    • 1999-10-07
    • Kyuichi TakimotoToshiyuki MatsuyamaHidekiyo OzawaSeiya Kitagawa
    • Kyuichi TakimotoToshiyuki MatsuyamaHidekiyo OzawaSeiya Kitagawa
    • H02J704
    • H02M3/156H02J7/0052H02J2007/0059
    • A DC—DC converter generates a system output current and a battery charging current. The converter has an output transistor connected between an AC adapter, which provides a supply current, and a terminal at which the battery charging current is provided. A control circuit generates a duty control signal used to activate and deactivate the output transistor in order to adjust the battery charging current. The control circuit includes a voltage detection circuit that compares a DC power supply voltage of the AC adapter with a first reference voltage and generates a differential voltage signal from the comparison result. A PWM comparison circuit is connected to the voltage detection circuit and compares the differential voltage signal with a triangular wave signal to generate the duty control signal which has a duty ratio corresponding to the comparison result.
    • DC-DC转换器产生系统输出电流和电池充电电流。 转换器具有连接在提供电源电流的AC适配器之间的输出晶体管和提供电池充电电流的端子。 控制电路产生用于激活和去激活输出晶体管的占空比控制信号,以便调节电池充电电流。 控制电路包括电压检测电路,其将AC适配器的DC电源电压与第一参考电压进行比较,并根据比较结果生成差分电压信号。 将PWM比较电路连接到电压检测电路,并将差分电压信号与三角波信号进行比较,以产生占空比对应于比较结果的占空比。
    • 77. 发明授权
    • Control circuit of power supply unit, power supply unit and control method thereof
    • 电源单元的控制电路,电源单元及其控制方法
    • US08368373B2
    • 2013-02-05
    • US11543093
    • 2006-10-05
    • Hidekiyo OzawaToru Nakamura
    • Hidekiyo OzawaToru Nakamura
    • G05F1/00G05B11/01G05D3/12H02H7/00H02J3/00
    • G11C5/14Y10T307/707
    • To provide a control circuit of power supply unit, power supply unit and control method thereof capable of setting and adjusting a voltage value of output voltage flexibly corresponding to an instruction from outside, a voltage adjusting portion AD for adjusting first voltage setting information inputted from outside to real voltage information is provided and the voltage value of the output voltage of the power supply unit is controlled based on real voltage information outputted from the voltage adjusting portion AD. The first voltage setting information inputted from outside enables a desired output voltage to be set up by adjusting the real voltage information flexibly even if information relating to the setting of voltage set as output voltage to an external device which is a supply destination is different from actually necessary voltage value.
    • 提供电源单元的控制电路,电源单元及其控制方法,能够根据来自外部的指令灵活地设定和调整输出电压的电压值;电压调节部AD,用于调整从外部输入的第一电压设定信息 提供实际电压信息,并且基于从电压调节部分AD输出的实际电压信息来控制电源单元的输出电压的电压值。 从外部输入的第一电压设定信息,即使与作为供给目的地的外部设备的设定为输出电压的设定有关的信息实际上与实际电压信息不同,也能够灵活地调整实际电压信息来设定期望的输出电压 必要的电压值。
    • 80. 发明授权
    • Step-up (boost) DC regulator with two-level back-bias switch gate voltage
    • 升压(升压)直流稳压器,具有双电平偏压开关栅极电压
    • US07298117B2
    • 2007-11-20
    • US11362513
    • 2006-02-27
    • Morihito HasegawaHidekiyo OzawaShoji TajiriToshihiko Kasai
    • Morihito HasegawaHidekiyo OzawaShoji TajiriToshihiko Kasai
    • G05F1/10
    • H02M1/36H02M3/156H02M2003/078H03K17/302H03K2217/0018
    • The invention provides a DC-DC converter capable of being started up in a state in which an input voltage is low and capable of being structured without increasing a circuit size. A back-gate voltage (Vsb) is outputted from a back-gate voltage generating circuit (VBGN), and is inputted to a back gate of a transistor (FET1). During a period during which an output voltage (Vout) is lower than a reference voltage (e0), an oscillation signal (OS1) is inputted to a gate of the transistor (FET1), and the back-gate voltage (Vsb) is set at a grounded voltage. Therefore, the transistor (FET1) has a reference threshold voltage (Vto). On the other hand, during a period during which the output voltage (Vout) is higher than the reference voltage (e0), a pulse signal (PS) is inputted to the gate of the transistor (FET1), and the back-gate voltage (Vsb) is set at an output voltage of a charge pump portion (5). Therefore, the transistor (FET1) has a threshold voltage higher than the reference threshold voltage (Vto).
    • 本发明提供一种DC-DC转换器,其能够在输入电压低的状态下启动并且能够在不增加电路尺寸的情况下被构造。 背栅电压(Vsb)从背栅极电压产生电路(VBGN)输出,并被输入到晶体管(FET1)的背栅极。 在输出电压(Vout)低于基准电压(e 0)的期间,将振荡信号(OS1)输入到晶体管(FET1)的栅极,将栅极电压(Vsb )设置在接地电压。 因此,晶体管(FET1)具有参考阈值电压(Vto)。 另一方面,在输出电压(Vout)高于基准电压(e 0)的期间,将脉冲信号(PS)输入到晶体管(FET1)的栅极, 栅极电压(Vsb)设定在电荷泵部(5)的输出电压。 因此,晶体管(FET1)具有高于参考阈值电压(Vto)的阈值电压。