公开(公告)号：US06917189B2

公开(公告)日：2005-07-12

申请号：US10424079

申请日：2003-04-25

申请人： Ko Takemura ,  Kiyotaka Umemoto ,  Kenichi Nakata

发明人： Ko Takemura ,  Kiyotaka Umemoto ,  Kenichi Nakata

IPC分类号： H02J1/00 ,  H02M3/155 ,  H02M3/158 ,  G05F1/40

CPC分类号： H02M3/1584 ,  H02M2001/0045 ,  H02M2001/322

摘要： The power supply unit is provided with a power supply circuit adapted to generate an output voltage in accord with an instruction voltage, an output condenser Co connected to the output end of the power supply circuit, and an auxiliary output voltage setting circuit adapted to compare the instruction voltage and the output voltage and to cause the output condenser to discharge its electric charge when the instruction voltage becomes lower than the output voltage. Because of the auxiliary output voltage setting circuit, the power supply circuit quickly generates an output voltage in accord with the instruction voltage if the instruction voltage is lowered.

摘要翻译： 电源单元设置有适于根据指令电压产生输出电压的电源电路，连接到电源电路的输出端的输出电容器Co和辅助输出电压设置电路， 指令电压和输出电压，并且当指令电压变得低于输出电压时，使输出电容器放电。 由于辅助输出电压设定电路，如果指令电压降低，电源电路就会根据指令电压快速产生输出电压。

公开(公告)号：US20050146905A1

公开(公告)日：2005-07-07

申请号：US11058316

申请日：2005-02-16

申请人： Ko Takemura ,  Kiyotaka Umemoto

发明人： Ko Takemura ,  Kiyotaka Umemoto

IPC分类号： H02M3/155 ,  H02M3/158 ,  H02M1/00

CPC分类号： H02M3/1584

摘要： In a multiphase DC/DC converter having a plurality of DC/DC converters, to prevent faults in the circuit and the circuit elements constituting it even when the balance of current limiting operation among the individual DC/DC converters is disturbed due to individual and temperature-related variations in the characteristics of the circuit elements, the output currents of the individual DC/DC converters are detected and added together, and are limited individually so that their sum does not exceed a predetermined level of current.

摘要翻译： 在具有多个DC / DC转换器的多相DC / DC转换器中，为了防止各个DC / DC转换器之间的电流限制操作的平衡由于个体和温度而被干扰，从而防止电路中的故障和构成它们的电路元件 相关的电路元件的特性的变化，各个DC / DC转换器的输出电流被检测并相加在一起，并被单独限制，使得它们的和不超过预定电流水平。

公开(公告)号：US20130188289A1

公开(公告)日：2013-07-25

申请号：US13877423

申请日：2011-08-31

申请人： Katsuhiko Misawa ,  Masafumi Yoshida ,  Takuya Taniguchi ,  Ko Takemura

发明人： Katsuhiko Misawa ,  Masafumi Yoshida ,  Takuya Taniguchi ,  Ko Takemura

IPC分类号： H02H9/02

CPC分类号： H02H9/02 ,  H02M1/32 ,  H03K17/0822

摘要： A protection circuit 2 of a first embodiment comprises a resistance-variable switch 10, an overcurrent detection unit 20, a control voltage application unit 30, a capacity unit 40, a control terminal voltage change unit 50, and an outer terminal 11. The resistance-variable switch 10 has a control terminal 10a, a first terminal 10b, and a second terminal 10c. The control terminal voltage change unit 50 includes a switch 51 and a resistor 52 which are provided in series between the control terminal 10a of the resistance-variable switch 10 and a reference potential terminal.

摘要翻译： 第一实施例的保护电路2包括电阻可变开关10，过电流检测单元20，控制电压施加单元30，电容单元40，控制端电压改变单元50和外端子11.电阻 变量开关10具有控制端子10a，第一端子10b和第二端子10c。 控制端子电压改变单元50包括串联设置在电阻变化开关10的控制端子10a和基准电位端子之间的开关51和电阻器52。

公开(公告)号：US08072201B2

公开(公告)日：2011-12-06

申请号：US12684599

申请日：2010-01-08

申请人： Kiyotaka Umemoto ,  Ko Takemura

发明人： Kiyotaka Umemoto ,  Ko Takemura

IPC分类号： G05F1/40

CPC分类号： H02M3/156 ,  H02M3/1588 ,  H02M2001/0019 ,  H02M2001/0025 ,  Y02B70/1466

摘要： In a power supply apparatus that is so configured as to produce from an input voltage an output voltage Vo within a predetermined permissible variation range, the output voltage Vo is so controlled as to decrease within the permissible variation range as the output current Io increases. This configuration offers an output voltage with an improved transient characteristic against an abrupt variation in the output current and simultaneously permits reduction of the power consumed when the output current increases.

摘要翻译： 在被配置为从输入电压产生预定允许变化范围内的输出电压Vo的电源装置中，输出电压Vo被控制为随着输出电流Io增加而在允许的变化范围内减小。 该配置提供具有改善的瞬态特性的输出电压，以防止输出电流的突然变化，并且同时允许当输出电流增加时减少消耗的功率。

公开(公告)号：US07714549B2

公开(公告)日：2010-05-11

申请号：US11666671

申请日：2005-09-21

申请人： Ko Takemura

发明人： Ko Takemura

IPC分类号： G05F1/00

CPC分类号： H02M3/158

摘要： A switching regulator includes a first switching regulator corresponding to a master channel, and a second switching regulator corresponding to a slave channel. The first switching regulator generates first output voltage Vout1 by a constant on-time system in which on-time is constant. On the other hand, the second switching regulator monitors a first switching signal and a second on-time control circuit determines on-time of a second switching signal in accordance with lapse time from the rising time of the first switching signal to the rising time of a second switching signal.

摘要翻译： 开关调节器包括对应于主通道的第一开关调节器和对应于从通道的第二开关调节器。 第一开关调节器通过导通时间恒定的恒定导通时间系统产生第一输出电压Vout1。 另一方面，第二开关稳压器监视第一开关信号，第二导通时间控制电路根据从第一开关信号的上升时间到上升时间的经过时间来确定第二开关信号的导通时间 第二切换信号。

公开(公告)号：US07612545B2

公开(公告)日：2009-11-03

申请号：US10595785

申请日：2004-11-11

申请人： Kiyotaka Umemoto ,  Ko Takemura

发明人： Kiyotaka Umemoto ,  Ko Takemura

IPC分类号： G05F1/40 ,  G05F1/10

CPC分类号： H02M3/1588 ,  Y02B70/1466

摘要： A DC/DC converter includes a switching element which is opened and closed to supply power from an input power supply Vcc through a coil to an output terminal, which is connected to a load, and to adjust the voltage at the output terminal. The DC/DC converter also includes a coil current detection resistor arranged to detect a coil current, a smoothing capacitor connected to the load side of the coil current detection resistor and arranged to smooth the voltage at the output terminal, a reference current value control circuit arranged to detect the voltage on the coil side of the coil current detection resistor to control a reference current value of the coil current, a clock generator arranged to generate a reference clock, and a feedback circuit arranged to close the switching element in synchrony with the reference clock and to open the switching element when the coil current exceeds the reference current value.

摘要翻译： DC / DC转换器包括开关元件，该开关元件被打开和关闭，以通过线圈向连接到负载的输出端子提供来自输入电源Vcc的电力，并且调节输出端子处的电压。 DC / DC转换器还包括线圈电流检测电阻器，用于检测线圈电流;平滑电容器，连接到线圈电流检测电阻器的负载侧并且布置成平滑输出端子处的电压;参考电流值控制电路 布置成检测线圈电流检测电阻器的线圈侧上的电压以控制线圈电流的参考电流值，布置成产生参考时钟的时钟发生器和布置成与开关元件同步闭合的反馈电路 参考时钟，并且当线圈电流超过参考电流值时打开开关元件。

公开(公告)号：US07221132B2

公开(公告)日：2007-05-22

申请号：US10872455

申请日：2004-06-22

申请人： Takuya Okubo ,  Ko Takemura

发明人： Takuya Okubo ,  Ko Takemura

IPC分类号： G05F1/40 ,  G05F1/56 ,  H02J3/12

CPC分类号： H03K17/145 ,  G05F1/56

摘要： A power supply circuit relating to the present invention comprises a differential amplifier for feeding out a voltage as a control voltage in accordance with a difference between a feedback voltage commensurate with an output voltage and a reference voltage, an output current control element for feeding out an output current in accordance with the control voltage fed thereto from the differential amplifier, an output line by way of which the output current is supplied to a load, a feedback line by way of which a voltage on the output line is fed back as the feedback voltage to the differential amplifier, the feedback line connected to the output line, and a sink current generating circuit, connected between the feedback line and ground, for generating a sink current by which the control voltage fed to the output current control element is raised to a predetermined value.

摘要翻译： 涉及本发明的电源电路包括：差分放大器，用于根据与输出电压相对应的反馈电压和参考电压之间的差异来输出电压作为控制电压;输出电流控制元件，用于馈出 输出电流，根据从差分放大器馈送到其的控制电压，输出线，输出电流被提供给负载;反馈线，输出线上的电压被反馈，作为反馈 连接到反馈线路和地之间的差分放大器的电压，连接到输出线路的反馈线路和灌电流发生电路，用于产生灌电流，通过该电流供给输出电流控制元件的控制电压被提高到 预定值。

公开(公告)号：US07148667B2

公开(公告)日：2006-12-12

申请号：US10822660

申请日：2004-04-13

申请人： Kiyotaka Umemoto ,  Ko Takemura

发明人： Kiyotaka Umemoto ,  Ko Takemura

IPC分类号： G05F1/40

CPC分类号： H02M3/156 ,  H02M3/1588 ,  H02M2001/0019 ,  H02M2001/0025 ,  Y02B70/1466

摘要： In a power supply apparatus that is so configured as to produce from an input voltage an output voltage Vo within a predetermined permissible variation range, the output voltage Vo is so controlled as to decrease within the permissible variation range as the output current Io increases. This configuration offers an output voltage with an improved transient characteristic against an abrupt variation in the output current and simultaneously permits reduction of the power consumed when the output current increases.

公开(公告)号：US07046533B2

公开(公告)日：2006-05-16

申请号：US11058316

申请日：2005-02-16

申请人： Ko Takemura ,  Kiyotaka Umemoto

发明人： Ko Takemura ,  Kiyotaka Umemoto

IPC分类号： H02M7/00

CPC分类号： H02M3/1584

摘要： In a DC/DC converter having a plurality of DC/DC converters, to prevent faults in the circuit and the circuit elements constituting it even when the balance of current limiting operation among the individual DC/DC converters is disturbed due to individual and temperature-related variations in the characteristics of the circuit elements, the output currents of the individual DC/DC converters are detected and added together, and are limited individually so that their sum does not exceed a predetermined level of current.

摘要翻译： 在具有多个DC / DC转换器的DC / DC转换器中，为了防止各个DC / DC转换器之间的限流操作的平衡由于个体和温度而被干扰，从而防止电路中的故障和构成它们的电路元件， 各个DC / DC转换器的输出电流被检测并相加在一起，并被单独限制，使得它们的和不超过预定的电流水平。

公开(公告)号：US06784724B2

公开(公告)日：2004-08-31

申请号：US10365500

申请日：2003-02-13

申请人： Ko Takemura

发明人： Ko Takemura

IPC分类号： G05F110

CPC分类号： G05F3/227

摘要： A constant voltage generating circuit has a reference voltage generating circuit of which the output voltage is controlled to be a constant voltage when the output voltage has risen, with an increase in the input supply voltage, to reach a predetermined voltage and that outputs the constant voltage as a reference voltage, a first transistor that turns on when the output voltage reaches the predetermined voltage to control the constant voltage output from the reference voltage generating circuit, a second transistor that is so connected that, when the first transistor turns on, a current proportional to the current flowing through the first transistor flows through the second transistor, and a signal output circuit that detects the current flowing through the second transistor to output a detection signal indicating that the constant voltage is being output.

摘要翻译： 恒定电压产生电路具有参考电压产生电路，当输出电压上升时，输出电压被控制为恒定电压，随着输入电源电压的增加而达到预定电压并输出恒定电压 作为参考电压，当输出电压达到预定电压时导通以控制从参考电压产生电路输出的恒定电压的第一晶体管;第二晶体管，其被连接成使得当第一晶体管导通时，电流 与流过第一晶体管的电流成比例的流过第二晶体管的信号输出电路，以及检测流过第二晶体管的电流以输出表示恒定电压正被输出的检测信号的信号输出电路。