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公开(公告)号：US07095219B2
公开(公告)日：2006-08-22
申请号：US11013040
申请日：2004-12-14
申请人： Ko Takemura , Kiyotaka Umemoto , Kenichi Nakata
发明人： Ko Takemura , Kiyotaka Umemoto , Kenichi Nakata
IPC分类号： 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.
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公开(公告)号：US06949917B2
公开(公告)日：2005-09-27
申请号：US10948001
申请日：2004-09-23
申请人： Kiyotaka Umemoto , Ko Takemura
发明人： Kiyotaka Umemoto , Ko Takemura
CPC分类号： H02M3/156 , H02M2001/0032 , H03F2200/351 , Y02B70/16
摘要： A switching power supply unit generates a pulse signal having a duty factor based on the voltage associated with the difference between a reference voltage and the output voltage of the unit, and the voltage associated with the current flowing through a smoothing coil. Upon receipt of the pulse signal and a light-load determination signal, a delay-control unit of the power supply unit outputs as an instruction signal supplied to the switching circuit the pulse signal as it is when the light-load determination signal indicates that the load is not light, but otherwise outputs the pulse signal after delaying and widening the pulse width thereof. Thus, when the load is light, the switching power supply unit may hold its switching frequency substantially low and constant without rendering the frequency bursting discontinuously.
摘要翻译： 开关电源单元产生具有基于与参考电压和单元的输出电压之间的差相关联的电压的占空比以及与流过平滑线圈的电流相关联的电压的脉冲信号。 当接收到脉冲信号和轻负载确定信号时，电源单元的延迟控制单元作为指示信号输出，作为指示信号，当轻负载确定信号指示为 负载不亮，否则在延迟和加宽其脉冲宽度后输出脉冲信号。 因此，当负载很轻时，开关电源单元可以保持其开关频率基本上低且恒定，而不会使频率突发不连续。
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公开(公告)号：US20050179425A1
公开(公告)日：2005-08-18
申请号：US11075525
申请日：2005-03-09
申请人： Kiyotaka Umemoto , Ko Takemura
发明人： Kiyotaka Umemoto , Ko Takemura
CPC分类号： H02M1/38 , H02M3/1588 , Y02B70/1466
摘要： A motor driving apparatus which includes a pair of field-effect transistors connected in series between a first supply voltage and a second supply voltage lower than the first supply voltage, an output smoothing circuit connected to a node between the two field-effect transistors, a driver for controlling on/off states of the field-effect transistors according to an input signal, and a detector for detecting on/off states of body diodes attached respectively to the field-effect transistors. Only after either of the body diodes is detected being on are the field-effect transistors respectively turned on to produce an output corresponding to the input signal so as to eventually produce a desired output voltage from the first supply voltage.
摘要翻译： 一种电动机驱动装置，包括：串联连接在第一电源电压和低于第一电源电压的第二电源电压之间的一对场效应晶体管;连接到两个场效应晶体管之间的节点的输出平滑电路， 用于根据输入信号控制场效应晶体管的导通/截止状态的驱动器，以及用于检测分别连接到场效应晶体管的体二极管的导通/截止状态的检测器。 仅在检测到体二极管被接通之后，场效应晶体管分别导通以产生对应于输入信号的输出，以便最终从第一电源电压产生期望的输出电压。
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公开(公告)号：US07486061B2
公开(公告)日：2009-02-03
申请号：US11599384
申请日：2006-11-15
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。
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公开(公告)号：US20080019160A1
公开(公告)日：2008-01-24
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： H02M3/06
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，其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V CC的电力，并且调整 输出端的电压。 DC / DC转换器还包括线圈电流检测电阻器，被配置为检测线圈电流，连接到线圈电流检测电阻器的负载侧的平滑电容器，并布置成使输出端子处的电压平滑;基准电流值控制电路， 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参考电压同步地闭合开关元件的反馈电路 时钟，并且当线圈电流超过参考电流值时打开开关元件。
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公开(公告)号：US20070057650A1
公开(公告)日：2007-03-15
申请号：US11599384
申请日：2006-11-15
申请人： Kiyotaka Umemoto , Ko Takemura
发明人： Kiyotaka Umemoto , Ko Takemura
IPC分类号： G05F1/10
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，同时允许当输出电流增加时减少消耗的功率
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公开(公告)号：US06922042B2
公开(公告)日：2005-07-26
申请号：US10608107
申请日：2003-06-30
申请人： Kiyotaka Umemoto , Ko Takemura
发明人： Kiyotaka Umemoto , Ko Takemura
CPC分类号： H02M3/1588 , H02M1/32 , H02M2001/0025 , Y02B70/1466 , Y10S323/901
摘要： A DC/DC converter produces from an input voltage a desired output voltage by first finding the error voltage between the output voltage and a first reference voltage and then controlling the output current according to the differential voltage between the error voltage and a second reference voltage. Used as the first reference voltage is whichever of a variable reference voltage and a first constant reference voltage is lower, and used as the second reference voltage is whichever of the variable reference voltage and a second constant reference voltage is lower. With this circuit configuration, an overshoot or undershoot in the output voltage can be prevented or reduced.
摘要翻译： DC / DC转换器通过首先找到输出电压和第一参考电压之间的误差电压，然后根据误差电压和第二参考电压之间的差分电压来控制输出电流，从输入电压产生期望的输出电压。 用作第一参考电压是可变参考电压和第一恒定参考电压中的任何一个，并且用作第二参考电压是可变参考电压和第二恒定参考电压中较低者。 利用该电路配置，可以防止或减少输出电压中的过冲或下冲。
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公开(公告)号：US07663355B2
公开(公告)日：2010-02-16
申请号：US12346115
申请日：2008-12-30
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。
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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
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。
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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
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。
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