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    • 2. 发明授权
    • Bipolar supply voltage generator and semiconductor device for same
    • 双极电源电压发生器和半导体器件相同
    • US07342436B2
    • 2008-03-11
    • US10316901
    • 2002-12-12
    • Chikara TsuchiyaKimitoshi NiratsukaEiji NishimoriKatsuyoshi Otsu
    • Chikara TsuchiyaKimitoshi NiratsukaEiji NishimoriKatsuyoshi Otsu
    • G05F1/10
    • H02M3/1582H02M2001/009
    • A reduced-size bipolar supply voltage generator which produces a positive and negative voltages from a unipolar power source. A single inductor is employed for current switching operation, where electric energy supplied from a power source is stored in magnetic form, and the stored magnetic energy is released as electric energy. A first and second diodes are connected to first and second ends of the inductor, respectively. The inductor is grounded at the first end via a first switch, while its second end is connected to the power source via a second switch. A switching controller activates both switches to energize the inductor. It then deactivates the first switch alone, thus directing the inductor's energy to the positive voltage output through the first diode. The controller may turn off the second switch alone after energizing the inductor. The stored energy now appears at the negative voltage output through the second diode.
    • 一种尺寸较小的双极电源电压发生器,可从单极电源产生正电压和负电压。 采用单个电感器进行电流切换操作,其中从电源供应的电能以磁性形式存储,并且存储的磁能被释放为电能。 第一和第二二极管分别连接到电感器的第一和第二端。 电感器通过第一开关在第一端接地,而其第二端通过第二开关连接到电源。 开关控制器激活两个开关以使电感器通电。 然后它使单独的第一开关停用,从而将电感器的能量引导到通过第一二极管的正电压输出。 控制器可以在给电感器供电之后单独关闭第二开关。 存储的能量现在出现在通过第二个二极管输出的负电压。
    • 3. 发明申请
    • Linear regulator circuit
    • 线性稳压电路
    • US20070216381A1
    • 2007-09-20
    • US11499718
    • 2006-08-07
    • Chikara TsuchiyaEiji Nishimori
    • Chikara TsuchiyaEiji Nishimori
    • G05F1/00
    • G05F1/575
    • A linear regulator circuit for suppressing power supply noise that propagates to an output voltage. An LDO circuit functioning as the linear regulator circuit is provided with an output transistor including a source for receiving input voltage, a drain for outputting the output voltage, and a control terminal. An error amplifier powered by the input voltage generates a control voltage for controlling the output transistor based on a potential difference between a feedback voltage, which corresponds to the output voltage, and a reference voltage. A first capacitor and a resistor are connected in series between the source of the output transistor and an output terminal of the error amplifier.
    • 一种用于抑制传播到输出电压的电源噪声的线性调节器电路。 用作线性调节器电路的LDO电路设置有包括用于接收输入电压的源极,用于输出输出电压的漏极和控制端子的输出晶体管。 由输入电压供电的误差放大器基于对应于输出电压的反馈电压与参考电压之间的电位差产生用于控制输出晶体管的控制电压。 第一电容器和电阻器串联连接在输出晶体管的源极和误差放大器的输出端子之间。
    • 5. 发明申请
    • DC-DC converter control circuit and DC-DC converter control method
    • DC-DC转换器控制电路和DC-DC转换器控制方法
    • US20070139027A1
    • 2007-06-21
    • US11390133
    • 2006-03-28
    • Eiji Nishimori
    • Eiji Nishimori
    • G05F1/00
    • H02M3/158H02M2001/0009H02M2001/0019
    • There are provided a DC-to-DC converter control circuit capable of implementing compatibility between low ripple voltage characteristics, and stable and fast response characteristics at the time of a sudden change in load, and a DC-to-DC converter control method using the same. An add-up signal of an output voltage signal obtained according to an output voltage of a DC-to-DC converter, and an AC current signal obtained according to an AC current component of a coil current is outputted from an arithmetic circuit, and the add-up signal is compared with a reference signal by a comparator. Switching control of the DC-to-DC converter is executed according to a result of comparison by the comparator. Even if an equivalent series-connected resistance ESR of a smoothing capacitor, connected to an output terminal of the DC-to-DC converter, is reduced, and a voltage ripple becomes very small in value, it is possible to detect variation in a coil current of the DC-to-DC converter, thereby obtaining an add-up signal obtained by adding a variation component of the coil current to the output voltage. By comparing the add-up signal with the reference signal, variation in the coil current, due to a change in load, can be captured with reliability.
    • 提供了一种DC-DC转换器控制电路,其能够实现低纹波电压特性与负载突然变化时的稳定和快速响应特性之间的兼容性,以及使用 相同。 从运算电路输出根据DC-DC转换器的输出电压获得的输出电压信号的加法信号和根据线圈电流的AC电流分量获得的AC电流信号, 加法信号通过比较器与参考信号进行比较。 根据比较器的比较结果来执行DC-DC转换器的开关控制。 即使连接到DC-DC转换器的输出端子的平滑电容器的等效串联电阻ESR减小,电压纹波值变得非常小,也可以检测线圈的变化 DC-DC转换器的电流,从而获得通过将线圈电流的变化分量与输出电压相加而获得的相加信号。 通过将加法信号与参考信号进行比较,可以可靠地捕获线圈电流由负载变化引起的变化。
    • 6. 发明申请
    • Control circuit and control method of current mode control type DC-DC converter
    • 电流模式控制型DC-DC转换器的控制电路和控制方法
    • US20060202669A1
    • 2006-09-14
    • US11185783
    • 2005-07-21
    • Eiji Nishimori
    • Eiji Nishimori
    • G05F1/00
    • H02M1/44H02M3/157H02M3/1588Y02B70/1466
    • The invention presents a control circuit and a control method of DC-DC converter capable of suppressing subharmonic oscillation of coil current even if the on-duty is over 50%. An error amplified signal V1 is an output voltage of an error amplifier ERA1. An offset voltage unit Ve2 outputs a lower limit set voltage V2 obtained by subtracting offset voltage e2 from error amplified signal V1. A voltage comparator COMP2 compares lower limit set voltage V2 output from offset voltage Ve2, and output voltage signal VIL. When the voltage value of output voltage signal VIL is decreased to lower limit set voltage V2 (region E2), the output of voltage comparator COMP2 changes from low level to high level. As a result, main transistor FET1 is set in conductive state. On the other hand, when the voltage value of output voltage signal VIL reaches an error amplified signal V1 (region E1), main transistor FET1 is set in non-conductive state.
    • 本发明提出了即使占空比超过50%,也能够抑制线圈电流的次谐波振荡的DC-DC转换器的控制电路和控制方法。 误差放大信号V 1是误差放大器ERA 1的输出电压。 偏移电压单元Ve 2输出通过从误差放大信号V 1中减去偏移电压e 2而获得的下限设定电压V 2。 电压比较器COMP2比较从偏移电压Ve 2输出的下限设定电压V 2和输出电压信号VIL。 当输出电压信号VIL的电压值下降到下限设定电压V 2(区域E 2)时,电压比较器COMP2的输出从低电平变为高电平。 结果,主晶体管FET1被设置为导通状态。 另一方面,当输出电压信号VIL的电压值达到误差放大信号V 1(区域E 1)时,主晶体管FET1被设定为非导通状态。
    • 7. 发明授权
    • Switching regulator having two or more outputs
    • 具有两个或更多个输出的开关稳压器
    • US06900620B2
    • 2005-05-31
    • US10390020
    • 2003-03-18
    • Eiji NishimoriToshiyuki Sekizawa
    • Eiji NishimoriToshiyuki Sekizawa
    • H02M3/155H02M3/158G05F1/577
    • H02M3/158H02M2001/009
    • A switching regulator circuit includes an inductor, a first condenser which provides a potential stored therein as a first output of the switching regulator circuit, a second condenser which provides a potential stored therein as a second output of the switching regulator circuit, and a switch set including a plurality of switches, the switch set establishing a first path, a second path, and a third path, the first path supplying energy from a DC power supply to the inductor for accumulation of the energy therein, the second path supplying the energy accumulated in the inductor to the first condenser, and the third path supplying the energy accumulated in the inductor to the second condenser.
    • 开关调节器电路包括电感器,提供存储在其中的电位作为开关调节器电路的第一输出的第一电容器,提供存储在其中的电位作为开关调节器电路的第二输出的第二电容器和开关组 包括多个开关,所述开关组建立第一路径,第二路径和第三路径,所述第一路径从DC电源向所述电感器供应能量以累积其中的能量,所述第二路径供应累积的能量 在第一电容器的电感器中,以及将累积在电感器中的能量提供给第二冷凝器的第三路径。
    • 10. 发明授权
    • DC-DC converter control circuit and DC-DC converter control method
    • DC-DC转换器控制电路和DC-DC转换器控制方法
    • US07595621B2
    • 2009-09-29
    • US11390133
    • 2006-03-28
    • Eiji Nishimori
    • Eiji Nishimori
    • G05F1/575
    • H02M3/158H02M2001/0009H02M2001/0019
    • In a DC-to-DC converter control circuit and control method thereof, an arithmetic circuit for outputs an add-up signal generated by adding an output voltage signal obtained by adding an output voltage of a DC-to-DC converter and an AC current signal obtained according to an AC current component of a coil current, and a comparator compares the add-up signal with a reference signal. Switching control is executed according to a result of the comparison by the comparator. By the control circuit and method, variations in the coil current due to a change in load may be reliably captured by comparing the add-up signal with the reference signal, and compatibility between low ripple voltage characteristics and stable and fast response to sudden changes in load may be achieved.
    • 在DC-DC转换器控制电路及其控制方法中,运算电路用于输出通过将通过将DC-DC转换器的输出电压相加得到的输出电压信号和AC电流 信号根据线圈电流的AC电流分量获得,并且比较器将加法信号与参考信号进行比较。 根据比较器的比较结果执行切换控制。 通过控制电路和方法,可以通过将加法信号与参考信号进行比较,以及低纹波电压特性与突然变化的稳定和快速响应之间的兼容性,可靠地捕获由于负载变化引起的线圈电流的变化 可以实现负载。