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    • 84. 发明授权
    • DC-to-DC converter
    • 直流到直流转换器
    • US07872458B2
    • 2011-01-18
    • US12332081
    • 2008-12-10
    • Takuya Ishii
    • Takuya Ishii
    • G05F1/00
    • H02M3/156H02M2001/0032Y02B70/16
    • A DC-to-DC converter includes a DC-to-DC conversion unit for converting an input voltage into an output voltage by switching operation of the switching element according to a drive signal and supplying the output voltage to a load and a control unit for generating the drive signal. The control unit includes a determination circuit for determining whether the load is in a normal operation state or a standby state, an error amplifier for generating an error signal according to the output voltage, a first drive-signal generator for generating a pulse sequence of pulses each having a pulse width according to the error signal, and a second drive-signal generator for generating a pulse having a pulse width larger than a cycle of repetition of the pulses in the pulse sequence when the voltage according to the output voltage falls below the reference voltage and the load is in the standby state.
    • DC-DC转换器包括DC-DC转换单元,用于通过根据驱动信号切换开关元件的操作将输入电压转换为输出电压,并将输出电压提供给负载,并且控制单元用于 产生驱动信号。 控制单元包括用于确定负载是处于正常操作状态还是待机状态的判定电路,用于根据输出电压产生误差信号的误差放大器,用于产生脉冲序列的第一驱动信号发生器 每个具有根据误差信号的脉冲宽度;以及第二驱动信号发生器,用于产生脉冲宽度大于脉冲序列中脉冲重复周期的脉冲,当脉冲序列的电压下降到低于 参考电压,负载处于待机状态。
    • 86. 发明申请
    • VOLTAGE SUPPLY CIRCUIT
    • 电压供电电路
    • US20100219685A1
    • 2010-09-02
    • US12708915
    • 2010-02-19
    • Yoshinori HorikawaTomohiro KumeTakuya IshiiTaichi Ikedo
    • Yoshinori HorikawaTomohiro KumeTakuya IshiiTaichi Ikedo
    • H02J1/00
    • G05F1/56Y10T307/406
    • In the voltage supply circuit, a reference voltage generating circuit generates a reference voltage. An operational amplifier circuit generates an output voltage on the basis of the reference voltage. A selection circuit has at least two first terminals to select one of the first terminals and to generate a passed output voltage representing the output voltage passed through the first terminal selected. A second terminal receives the passed output voltage and is capable of outputting the passed output voltage to a load circuit. A detection circuit detects a magnitude of the passed output voltage and generates a detection voltage. The selection circuit selects a voltage corresponding to the passed output voltage generated from among at least two of the detection voltages and generates a detection voltage representing the detection voltage selected. The operational amplifier circuit decreases the difference between the reference voltage and the selected detection voltage.
    • 在电压供给电路中,参考电压产生电路产生参考电压。 运算放大器电路基于参考电压产生输出电压。 选择电路具有至少两个第一端子,用于选择第一端子之一并产生表示通过所选择的第一端子的输出电压的通过的输出电压。 第二端子接收经过的输出电压并且能够将传递的输出电压输出到负载电路。 检测电路检测经过的输出电压的大小并产生检测电压。 选择电路选择与从至少两个检测电压中产生的经过的输出电压对应的电压,并产生表示所选择的检测电压的检测电压。 运算放大器电路减小参考电压和所选择的检测电压之间的差异。