公开(公告)号：US07817399B2

公开(公告)日：2010-10-19

申请号：US11940028

申请日：2007-11-14

申请人： Hisanori Nagase ,  Tomohiro Kume

发明人： Hisanori Nagase ,  Tomohiro Kume

IPC分类号： H01H47/28 ,  H01H47/32

CPC分类号： H02M3/156 ,  H02M2003/1555 ,  H03K7/08

摘要： A first voltage-to-current converter converts a difference voltage between a command voltage and a reference voltage into a current. A second voltage-to-current converter converts a difference voltage between a positive output terminal and a negative output terminal of a PWM drive apparatus into a current. A low-pass filter is connected to a connection point between an output terminal of the first voltage-to-current converter and an output terminal of the second voltage-to-current converter. An amplifier amplifies a difference voltage between a voltage at the connection point and a reference voltage. A PWM modulator PWM-modulates an output voltage of the amplifier. A drive section drives a load in accordance with an output signal of the PWM modulator.

摘要翻译： 第一电压 - 电流转换器将指令电压和参考电压之间的差值电压转换为电流。 第二电压 - 电流转换器将PWM驱动装置的正输出端和负输出端之间的差电压转换为电流。 低通滤波器连接到第一电压 - 电流转换器的输出端和第二电压 - 电流转换器的输出端之间的连接点。 放大器放大连接点处的电压与参考电压之间的差分电压。 PWM调制器PWM调制放大器的输出电压。 驱动部分根据PWM调制器的输出信号驱动负载。

公开(公告)号：US20110199065A1

公开(公告)日：2011-08-18

申请号：US13094234

申请日：2011-04-26

申请人： Tomohiro KUME

发明人： Tomohiro KUME

IPC分类号： G05F1/618

CPC分类号： H02M3/156

摘要： A DC-to-DC converter includes a triangular wave generator, a variable gain amplifier configured to amplify an error between a reference voltage and a feedback voltage which is a feedback of an output voltage so that a gain relatively decreases as an input voltage increases, and relatively increases as the input voltage decreases, and a comparator configured to compare an output of the triangular wave generator with an output of the variable gain amplifier. The variable gain amplifier includes a differential pair configured to convert the feedback voltage and the reference voltage into currents, a Gilbert cell circuit configured to differentially receive the currents output from the differential pair, an output conversion circuit configured to convert differential outputs from the Gilbert cell circuit into a single output, and a tail current source configured to supply, to the differential pair, tail currents having a magnitude corresponding to the input voltage.

摘要翻译： DC-DC转换器包括三角波发生器，可变增益放大器，被配置为放大参考电压和作为输出电压的反馈的反馈电压之间的误差，使得增益随着输入电压的增加而相对减小， 并且随着输入电压降低而相对增加，并且比较器被配置为将三角波发生器的输出与可变增益放大器的输出进行比较。 可变增益放大器包括被配置为将反馈电压和参考电压转换成电流的差分对，配置成差分地接收从差分对输出的电流的吉尔伯特单元电路，被配置为转换来自吉尔伯特单元的差分输出的输出转换电路 电路转换成单个输出，并且尾电流源被配置为向差分对提供具有对应于输入电压的幅度的尾部电流。

公开(公告)号：US08044708B2

公开(公告)日：2011-10-25

申请号：US12643277

申请日：2009-12-21

申请人： Tomohiro Kume

发明人： Tomohiro Kume

IPC分类号： G05F1/10

CPC分类号： G05F3/16 ,  G05F1/56

摘要： A reference voltage generator includes: a reference voltage source 1 that generates a direct-current voltage that is used as a reference; a low-pass filter 2 that is connected to an output node of the reference voltage source; a first voltage buffer circuit 10 with an input terminal to which the output node of the reference voltage source is connected and an output terminal to which an output node of the low-pass filter is connected, which has a voltage gain of one time; and a hysteresis comparator 11 with one input terminal to which the output node of the reference voltage source is connected and an other input terminal to which the output node of the low-pass filter is connected. At start-up, during a time period in which a voltage difference between an output of the reference voltage source and an output of the low-pass filter exceeds a predetermined value, an output impedance of the first voltage buffer circuit is controlled based on an output signal of the hysteresis comparator. At start-up, the low-pass filter that reduces noise is charged with a low impedance rapidly, and thus an output voltage can be stabilized rapidly.

摘要翻译： 参考电压发生器包括：产生用作基准的直流电压的参考电压源1; 连接到参考电压源的输出节点的低通滤波器2; 具有连接参考电压源的输出节点的输入端的第一电压缓冲器电路10和连接有低通滤波器的输出节点的输出端子，其具有一次的电压增益; 以及具有参考电压源的输出节点连接的一个输入端子和低通滤波器的输出节点连接的另一输入端子的滞后比较器11。 在启动时，在参考电压源的输出与低通滤波器的输出之间的电压差超过预定值的时间段内，基于第一电压缓冲电路的输出阻抗 迟滞比较器的输出信号。 在启动时，降低噪声的低通滤波器会以低阻抗快速充电，从而可以快速稳定输出电压。

公开(公告)号：US20110248702A1

公开(公告)日：2011-10-13

申请号：US13081781

申请日：2011-04-07

申请人： Tomohiro KUME

发明人： Tomohiro KUME

IPC分类号： G01R19/22

CPC分类号： G01R19/0092 ,  H03K17/0822 ,  H03K2217/0027

摘要： Using a electrostatic capacitor and a diode, a gate voltage of a protecting MOSFET is increased when a drain voltage of a power transistor increases. A voltage clamp circuit clamps the maximum voltage of the gate voltage of the protecting MOSFET to a predetermined clamp voltage. A voltage control circuit controls a drain voltage of a sense transistor so as to substantially coincide with a source voltage of the protecting MOSFET.

摘要翻译： 使用静电电容器和二极管，当功率晶体管的漏极电压增加时，保护MOSFET的栅极电压增加。 电压钳位电路将保护MOSFET的栅极电压的最大电压钳位到预定的钳位电压。 电压控制电路控制感测晶体管的漏极电压，以便与保护MOSFET的源极电压基本一致。

公开(公告)号：US20100156520A1

公开(公告)日：2010-06-24

申请号：US12643277

申请日：2009-12-21

申请人： Tomohiro KUME

发明人： Tomohiro KUME

IPC分类号： G05F1/10

CPC分类号： G05F3/16 ,  G05F1/56

摘要： A reference voltage generator includes: a reference voltage source 1 that generates a direct-current voltage that is used as a reference; a low-pass filter 2 that is connected to an output node of the reference voltage source; a first voltage buffer circuit 10 with an input terminal to which the output node of the reference voltage source is connected and an output terminal to which an output node of the low-pass filter is connected, which has a voltage gain of one time; and a hysteresis comparator 11 with one input terminal to which the output node of the reference voltage source is connected and an other input terminal to which the output node of the low-pass filter is connected. At start-up, during a time period in which a voltage difference between an output of the reference voltage source and an output of the low-pass filter exceeds a predetermined value, an output impedance of the first voltage buffer circuit is controlled based on an output signal of the hysteresis comparator. At start-up, the low-pass filter that reduces noise is charged with a low impedance rapidly, and thus an output voltage can be stabilized rapidly.

摘要翻译： 参考电压发生器包括：产生用作基准的直流电压的参考电压源1; 连接到参考电压源的输出节点的低通滤波器2; 具有连接参考电压源的输出节点的输入端的第一电压缓冲器电路10和连接有低通滤波器的输出节点的输出端子，其具有一次的电压增益; 以及具有参考电压源的输出节点连接的一个输入端子和低通滤波器的输出节点连接的另一输入端子的滞后比较器11。 在启动时，在参考电压源的输出与低通滤波器的输出之间的电压差超过预定值的时间段内，基于第一电压缓冲电路的输出阻抗 迟滞比较器的输出信号。 在启动时，降低噪声的低通滤波器会以低阻抗快速充电，从而可以快速稳定输出电压。

公开(公告)号：US20080130186A1

公开(公告)日：2008-06-05

申请号：US11940028

申请日：2007-11-14

申请人： Hisanori Nagase ,  Tomohiro Kume

发明人： Hisanori Nagase ,  Tomohiro Kume

IPC分类号： H01H47/32 ,  G05F1/565

CPC分类号： H02M3/156 ,  H02M2003/1555 ,  H03K7/08

摘要： A first voltage-to-current converter converts a difference voltage between a command voltage and a reference voltage into a current. A second voltage-to-current converter converts a difference voltage between a positive output terminal and a negative output terminal of a PWM drive apparatus into a current. A low-pass filter is connected to a connection point between an output terminal of the first voltage-to-current converter and an output terminal of the second voltage-to-current converter. An amplifier amplifies a difference voltage between a voltage at the connection point and a reference voltage. A PWM modulator PWM-modulates an output voltage of the amplifier. A drive section drives a load in accordance with an output signal of the PWM modulator.

摘要翻译： 第一电压 - 电流转换器将指令电压和参考电压之间的差值电压转换为电流。 第二电压 - 电流转换器将PWM驱动装置的正输出端和负输出端之间的差电压转换为电流。 低通滤波器连接到第一电压 - 电流转换器的输出端和第二电压 - 电流转换器的输出端之间的连接点。 放大器放大连接点处的电压与参考电压之间的差分电压。 PWM调制器PWM调制放大器的输出电压。 驱动部分根据PWM调制器的输出信号驱动负载。

公开(公告)号：US20100219685A1

公开(公告)日：2010-09-02

申请号：US12708915

申请日：2010-02-19

申请人： Yoshinori Horikawa ,  Tomohiro Kume ,  Takuya Ishii ,  Taichi Ikedo

发明人： Yoshinori Horikawa ,  Tomohiro Kume ,  Takuya Ishii ,  Taichi Ikedo

IPC分类号： H02J1/00

CPC分类号： G05F1/56 ,  Y10T307/406

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20080157830A1

公开(公告)日：2008-07-03

申请号：US11950443

申请日：2007-12-05

申请人： Tomohiro Kume

发明人： Tomohiro Kume

IPC分类号： H03K4/06 ,  H03K7/08 ,  H03K3/0233 ,  H03B1/00

CPC分类号： H03K4/066 ,  H03K7/08

摘要： The present invention relates to an oscillator outputting two triangle waves having the same amplitude and whose phases are inverted; and a pulse width modulator using the oscillator. A capacitor 3 is charged or discharged by a charge pump circuit 2 controlled by a Schmitt circuit 1, and a voltage integrated by a two-output differential amplification circuit 6 is positively fed back to the input of the Schmitt circuit 1 to output two triangle waves having the same amplitude and whose phases are inverted. Since the output stage is composed of a differential amplification circuit, the circuit has low output impedance and is protected from wiring capacity and connected input capacity, and since integral operation is caused to be performed by the differential amplification circuit, the distortion in the waveform of the triangle waves can be prevented.

摘要翻译： 本发明涉及输出具有相同振幅并且其相位反相的两个三角波的振荡器; 以及使用振荡器的脉宽调制器。 电容器3由施密特电路1控制的电荷泵电路2充电或放电，由双输出差分放大电路6积分的电压被正反馈回施密特电路1的输入端以输出两个三角波 具有相同的幅度并且其相位被反转。 由于输出级由差分放大电路组成，所以电路具有低输出阻抗，并且不受布线容量和连接的输入容量的限制，由于由差分放大电路进行积分运算，所以波形的失真 可以防止三角波。