公开(公告)号：US07750722B2

公开(公告)日：2010-07-06

申请号：US12156903

申请日：2008-06-04

申请人： Nan Kawashima

发明人： Nan Kawashima

IPC分类号： G05F1/10

CPC分类号： H02M3/07 ,  H02M3/073

摘要： A charge pump circuit has an input voltage generating circuit and a voltage step-up circuit. The input voltage generating circuit has a constant current circuit that generates a constant current, a charge transfer correction device that generates a correction voltage based on the constant current, a constant voltage circuit that generates a constant voltage, and a buffer amplifier that outputs an input voltage obtained by adding the correction voltage to the constant voltage. The voltage step-up circuit has charge transfer devices, capacitors and a clock driver. The charge transfer devices are connected in series to an output terminal of the buffer amplifier and are made of the same element as and have substantially the same characteristic as that of the charge transfer correction device. Each of the capacitors has one end connected to each connection point of each of the plurality of charge transfer devices. The clock driver uses the input voltage as a power supply voltage, generates clock pulses having opposite phases based on the power supply voltage, and alternately supplies the clock pulses to another end of each of the plurality of capacitors.

摘要翻译： 电荷泵电路具有输入电压产生电路和升压电路。 输入电压产生电路具有产生恒定电流的恒定电流电路，产生基于恒定电流的校正电压的电荷转移校正装置，产生恒定电压的恒定电压电路，以及输出输入的缓冲放大器 通过将校正电压加到恒定电压而获得的电压。 升压电路具有电荷转移装置，电容器和时钟驱动器。 电荷转移装置与缓冲放大器的输出端串联连接，并由与电荷转移校正装置相同的元件和与电荷转移校正装置基本相同的特性制成。 每个电容器的一端连接到多个电荷转移装置的每一个的每个连接点。 时钟驱动器使用输入电压作为电源电压，基于电源电压产生具有相反相位的时钟脉冲，并且将时钟脉冲交替地提供给多个电容器的每一个的另一端。

公开(公告)号：US20100176874A1

公开(公告)日：2010-07-15

申请号：US12686640

申请日：2010-01-13

申请人： Masakazu Sugiura ,  Atsushi Igarashi ,  Nan Kawashima

发明人： Masakazu Sugiura ,  Atsushi Igarashi ,  Nan Kawashima

IPC分类号： G05F1/10

CPC分类号： H03K17/223 ,  G01R19/16519 ,  G01R31/3004

摘要： Provided is a voltage detection circuit having a small circuit scale. A P-type metal oxide semiconductor (PMOS) transistor (11) has an absolute value (Vtp) of its threshold voltage, which is equal to a minimum operating voltage. If a power supply voltage (VDD) becomes higher than the minimum operating voltage, the PMOS transistor (11) is turned ON to allow a current to flow therethrough. As a result, based on the current, an output voltage (Vout) is generated across a capacitor (15).

摘要翻译： 提供具有小电路规模的电压检测电路。 P型金属氧化物半导体（PMOS）晶体管（11）的阈值电压的绝对值（Vtp）等于最小工作电压。 如果电源电压（VDD）变得高于最小工作电压，则PMOS晶体管（11）导通以允许电流流过。 结果，基于电流，跨越电容器（15）产生输出电压（Vout）。

公开(公告)号：US20090184753A1

公开(公告)日：2009-07-23

申请号：US12354486

申请日：2009-01-15

申请人： Nan Kawashima ,  Fumiyasu Utsunomiya

发明人： Nan Kawashima ,  Fumiyasu Utsunomiya

IPC分类号： G05F1/10

CPC分类号： H02M3/073 ,  H02M1/32 ,  H02M2001/0045

摘要： Provided is a charge pump circuit capable of shortening a settling time. When a boosted voltage (Vout) becomes high to be equal to or larger than an overshoot voltage, a transistor (T1) is turned on and an output terminal of the charge pump circuit is discharged. Accordingly, it is easy to reduce the boosted voltage (Vout) after an occurrence of an overshoot, and a period of time in which the boosted voltage (Vout) decreases from a voltage after the occurrence of the overshoot to a desired voltage is shortened, leading to a reduction in a settling time.

摘要翻译： 提供了能够缩短稳定时间的电荷泵电路。 当升高电压（Vout）变高到等于或大于过冲电压时，晶体管（T1）导通，并且电荷泵电路的输出端子被放电。 因此，在发生过冲之后容易降低升压电压（Vout），并且缩短升压电压（Vout）从过冲发生之后的电压降低到期望电压的时间段， 导致建立时间缩短。

公开(公告)号：US20080303585A1

公开(公告)日：2008-12-11

申请号：US12156903

申请日：2008-06-04

申请人： Nan Kawashima

发明人： Nan Kawashima

IPC分类号： G05F1/10

CPC分类号： H02M3/07 ,  H02M3/073

摘要： A charge pump circuit is provided for stably obtaining a stepped-up voltage even if a temperature varies. The charge pump circuit has a structure in which a voltage corresponding to a voltage which is dropped by a charge transfer device is generated by a charge transfer device for correction, and the generated voltage is applied to an input voltage of the charge pump circuit. In addition, a voltage amplitude of a clock pulse for a step-up operation is adapted to be an amplitude based on the input voltage.

摘要翻译： 提供了一种电荷泵电路，用于即使温度变化也能稳定地获得升压电压。 电荷泵电路具有这样的结构，其中通过电荷转移装置产生与由电荷转移装置掉下的电压相对应的电压，并且产生的电压被施加到电荷泵电路的输入电压。 此外，用于升压操作的时钟脉冲的电压幅度适合于基于输入电压的振幅。