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    • 1. 发明授权
    • High-side switch circuit
    • 高侧开关电路
    • US08604842B2
    • 2013-12-10
    • US13425606
    • 2012-03-21
    • Yuki SatoHiroyuki Tsurumi
    • Yuki SatoHiroyuki Tsurumi
    • H03K3/00H03K5/153
    • H03K17/00H03K17/08122H03K17/6871H03K2217/0063
    • The high-side switch circuit includes a first output MOS transistor that is connected, at a first end thereof, to a power supply terminal. The high-side switch circuit includes a second output MOS transistor that is connected to a second end of the first output MOS transistor at a first end thereof and to a voltage output terminal at a second end thereof. The high-side switch circuit includes a current detecting circuit that detects a current flowing through the first output MOS transistor and outputs a detection signal. The high-side switch circuit includes a first gate driver that applies a first control voltage to a gate of the first output MOS transistor. The high-side switch circuit includes a second gate driver that applies a second control voltage to a gate of the second output MOS transistor.
    • 高侧开关电路包括在其第一端处连接到电源端子的第一输出MOS晶体管。 高侧开关电路包括第二输出MOS晶体管,其在第一端连接到第一输出MOS晶体管的第二端,并在其第二端连接到电压输出端。 高侧开关电路包括电流检测电路,其检测流过第一输出MOS晶体管的电流并输出检测信号。 高侧开关电路包括对第一输出MOS晶体管的栅极施加第一控制电压的第一栅极驱动器。 高侧开关电路包括向第二输出MOS晶体管的栅极施加第二控制电压的第二栅极驱动器。
    • 2. 发明授权
    • Audio dropout amplifier
    • 音频放大放大器
    • US08232838B2
    • 2012-07-31
    • US12969773
    • 2010-12-16
    • Katsuhiro YasudaHiroyuki TsurumiYuki Sato
    • Katsuhiro YasudaHiroyuki TsurumiYuki Sato
    • H03F1/14
    • H03F3/187H03F3/45475H03F2203/45392
    • According to embodiments, in a case that a source voltage is lowered and a potential difference between the source voltage and a ripple terminal voltage is below a constant potential difference, the ripple terminal voltage is lowered until the ripple terminal voltage reaches a first threshold value when a lowered value of the source voltage is equal to or larger than a predetermined voltage that exceeds the first threshold value by the constant potential difference, and the ripple terminal voltage is lowered until the ripple terminal voltage reaches a second threshold value smaller than the first threshold value when the lowered value of the source voltage is below the predetermined voltage.
    • 根据实施例,在源极电压降低并且源极电压和纹波端子电压之间的电位差低于恒定电位差的情况下,纹波端子电压降低直到纹波端子电压达到第一阈值, 源极电压的降低值等于或大于通过恒定电位差超过第一阈值的预定电压,并且纹波端电压降低直到纹波端电压达到小于第一阈值的第二阈值 当源电压的降低值低于预定电压时的值。
    • 3. 发明申请
    • HIGH-SIDE SWITCH CIRCUIT
    • 高边开关电路
    • US20130049813A1
    • 2013-02-28
    • US13425606
    • 2012-03-21
    • Yuki SatoHiroyuki Tsurumi
    • Yuki SatoHiroyuki Tsurumi
    • H03K3/00
    • H03K17/00H03K17/08122H03K17/6871H03K2217/0063
    • The high-side switch circuit includes a first output MOS transistor that is connected, at a first end thereof, to a power supply terminal. The high-side switch circuit includes a second output MOS transistor that is connected to a second end of the first output MOS transistor at a first end thereof and to a voltage output terminal at a second end thereof. The high-side switch circuit includes a current detecting circuit that detects a current flowing through the first output MOS transistor and outputs a detection signal. The high-side switch circuit includes a first gate driver that applies a first control voltage to a gate of the first output MOS transistor. The high-side switch circuit includes a second gate driver that applies a second control voltage to a gate of the second output MOS transistor.
    • 高侧开关电路包括在其第一端处连接到电源端子的第一输出MOS晶体管。 高侧开关电路包括第二输出MOS晶体管,其在第一端连接到第一输出MOS晶体管的第二端,并在其第二端连接到电压输出端。 高侧开关电路包括电流检测电路,其检测流过第一输出MOS晶体管的电流并输出检测信号。 高侧开关电路包括对第一输出MOS晶体管的栅极施加第一控制电压的第一栅极驱动器。 高侧开关电路包括向第二输出MOS晶体管的栅极施加第二控制电压的第二栅极驱动器。
    • 4. 发明申请
    • AMPLIFIER
    • 放大器
    • US20110193631A1
    • 2011-08-11
    • US12969773
    • 2010-12-16
    • Katsuhiro YasudaHiroyuki TsurumiYuki Sato
    • Katsuhiro YasudaHiroyuki TsurumiYuki Sato
    • H03F3/45
    • H03F3/187H03F3/45475H03F2203/45392
    • According to embodiments, in a case that a source voltage is lowered and a potential difference between the source voltage and a ripple terminal voltage is below a constant potential difference, the ripple terminal voltage is lowered until the ripple terminal voltage reaches a first threshold value when a lowered value of the source voltage is equal to or larger than a predetermined voltage that exceeds the first threshold value by the constant potential difference, and the ripple terminal voltage is lowered until the ripple terminal voltage reaches a second threshold value smaller than the first threshold value when the lowered value of the source voltage is below the predetermined voltage.
    • 根据实施例,在源极电压降低并且源极电压和纹波端子电压之间的电位差低于恒定电位差的情况下,纹波端子电压降低直到纹波端子电压达到第一阈值, 源极电压的降低值等于或大于通过恒定电位差超过第一阈值的预定电压,并且纹波端电压降低直到纹波端电压达到小于第一阈值的第二阈值 当源电压的降低值低于预定电压时的值。