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公开(公告)号：US09954439B1
公开(公告)日：2018-04-24
申请号：US15331867
申请日：2016-10-23
发明人： Masaru Nakamura
CPC分类号： H02M3/157 , H02M3/156 , H02M2003/1566
摘要： A control circuit of a switching power-supply device that converts a first DC voltage supplied from an input power source to a second DC voltage, includes: a first A/D converter that converts the second DC voltage into a first digital value, in response to a sampling clock depending on a first sampling clock and a second sampling clock; a control signal generation unit that generates a control signal for controlling on-and-off of the switching element based on of a difference between the first digital value and a target value; a regeneration completion sensing unit that senses completion of regeneration of the inductor and outputs a regeneration completion signal; and a sampling clock generation unit that: generates the first sampling clock, in response to the control signal to turn on the switching element, and generates the second sampling clock, in response to the regeneration completion signal.
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公开(公告)号：US20160149490A1
公开(公告)日：2016-05-26
申请号：US14549147
申请日：2014-11-20
发明人： Masaru Nakamura
CPC分类号： H02M3/158 , H02J7/0063 , H02M2001/0016 , H02M2001/0032 , Y02B70/16
摘要： A switching power-supply device configured to convert and output a first direct voltage supplied to a second direct voltage by alternately turning on and off a first switching element and a second switching element includes: an inductor; a detection unit; a reference voltage generation unit; a comparison unit; a driving unit; a driving signal generation unit; and a power supply circuit, the driving unit turns on the first switching element during a period where the driving signal is supplied, the reference voltage generation unit comprises: a capacitor; a superimposing unit; a charging-and-discharging unit; and a first charging current control unit, and the first charging current control unit charges the capacitor with the first charging current until regeneration of the inductor is completed and charges the capacitor with the second charging current after the regeneration of the inductor is completed until the driving signal is outputted.
摘要翻译： 一种开关电源装置，被配置为通过交替地导通和关断第一开关元件和第二开关元件来转换和输出提供给第二直流电压的第一直流电压，所述开关电源装置包括：电感器; 检测单元; 参考电压产生单元; 比较单位 一个驱动单元; 驱动信号发生单元; 以及电源电路，所述驱动单元在提供所述驱动信号的期间内接通所述第一开关元件，所述基准电压生成单元包括：电容器; 叠加单元; 一个充放电单元; 以及第一充电电流控制单元，并且第一充电电流控制单元用第一充电电流对电容器充电，直到电感器的再生完成，并且在电感器的再生完成之后用第二充电电流对电容器充电直到驱动 信号被输出。
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公开(公告)号：US09172302B2
公开(公告)日：2015-10-27
申请号：US14093074
申请日：2013-11-29
发明人： Masaru Nakamura
CPC分类号： H02M3/156 , H02M2001/0022
摘要： The present invention includes: an ON-timer configured to control a period of time in which a main switching element is on; a voltage detecting circuit configured to detect an output voltage of a filter circuit; a triangular wave generator; a feed-forward circuit configured to generate a feed-forward output whose value decreases as a value of a DC voltage from a DC power supply increases; and a comparator configured to compare a second reference voltage generated by adding together a first reference voltage, a triangular wave signal from the triangular wave generator, and the feed-forward output from the feed-forward circuit, with the output voltage of the voltage detecting circuit, and based on a result of the comparison, output an ON-trigger signal for turning on the main switch element to the ON-timer.
摘要翻译： 本发明包括：接通定时器，被配置为控制主开关元件接通的时间段; 电压检测电路，被配置为检测滤波电路的输出电压; 三角波发生器; 配置为产生其值随着直流电源的直流电压值的增加而减小的前馈输出的前馈电路; 以及比较器，被配置为比较通过将来自三角波发生器的三角波信号和来自前馈电路的前馈输出相加的第一参考电压，电压检测的输出电压 电路，并且基于比较的结果，输出用于将主开关元件接通到ON定时器的ON触发信号。
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公开(公告)号：US20140210444A1
公开(公告)日：2014-07-31
申请号：US13755811
申请日：2013-01-31
发明人： Masaru Nakamura , Takayuki Konishi , Chie Isshi , Satoshi Nakamoto , Jung Soo Lee , Hiroaki Nakamura
IPC分类号： H02M3/156
摘要： A switching power-supply device includes a main switching element connected between a power-supply and an output terminal; a driving circuit that drives the main switching element; a capacitor that feeds power to the driving circuit; a charging circuit that charges the capacitor when the main switching element is switched from an on-state to an off-state; a switching control circuit that performs switching control of alternately switching the main switching element to the on-state and the off-state via the driving circuit; a voltage detection circuit that detects a voltage between both ends of the capacitor, and a driving control circuit that switches a state of prohibiting driving of the main switching element and a state of permitting driving of the main switching element, based on a difference between an output voltage output from the output terminal and a preset reference voltage and the voltage between both ends of the capacitor.
摘要翻译： 开关电源装置包括连接在电源和输出端子之间的主开关元件; 驱动所述主开关元件的驱动电路; 向驱动电路供电的电容器; 充电电路，当所述主开关元件从导通状态切换到断开状态时对所述电容器充电; 开关控制电路，其执行通过所述驱动电路交替地将所述主开关元件切换到导通状态和截止状态的开关控制; 检测电容器的两端之间的电压的电压检测电路以及切换主开关元件的禁止驱动状态的驱动控制电路和允许主开关元件的驱动的状态的驱动控制电路， 从输出端子输出的输出电压和预设的参考电压以及电容器两端的电压。
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公开(公告)号：US09318956B1
公开(公告)日：2016-04-19
申请号：US14548921
申请日：2014-11-20
发明人： Masaru Nakamura
CPC分类号： H02M3/158 , H02M3/1588 , H02M2001/0025 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
摘要： A switching power-supply device configured to convert and output a first direct voltage supplied from an input power source to a second direct voltage by alternately turning on and off a first switching element connected to the input power source and a second switching element connected in series to the first switching element, the switching power-supply device includes a reference voltage generation unit; and a driving unit, wherein when a generation cycle of a timing becomes shorter than a first cycle, a reference voltage generation unit cause a slope of a ramp signal, which is to be superimposed with a first reference voltage, to become gentler than a case where a generation cycle of a timing is equal to or longer than the first cycle.
摘要翻译： 一种开关电源装置，被配置为通过交替地接通和断开连接到输入电源的第一开关元件和串联连接的第二开关元件，将从输入电源提供的第一直流电压转换并输出到第二直流电压; 对于第一开关元件，开关电源装置包括基准电压产生单元; 以及驱动单元，其中当定时的产生周期变得短于第一周期时，参考电压产生单元使得与第一参考电压叠加的斜坡信号的斜率变得比情况更温和 其中定时的生成周期等于或长于第一周期。
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6.发明授权Switching power-supply device and method for manufacturing switching power-supply device 有权开关电源装置及开关电源装置的制造方法公开(公告)号：US09280164B2
公开(公告)日：2016-03-08
申请号：US13744798
申请日：2013-01-18
发明人： Jung Soo Lee , Satoshi Nakamoto , Chie Isshi , Masaru Nakamura
CPC分类号： G05F1/468 , H02M3/156 , H02M2001/0025 , H02M2001/0032 , Y02B70/16
摘要： A switching power-supply device includes a switching element; an output circuit; a feedback signal generation circuit; a control circuit that drives the switching element, based on the feedback signal, and controls the voltage of the power-supply output; a correction circuit that corrects a signal level of the feedback signal, wherein the control circuit comprises: an oscillation circuit that generates an on-trigger signal; a current detection circuit that generates a current detection signal; a difference detection circuit that generates a difference detection signal; a comparison circuit that generates an off-trigger signal, based on the current detection signal and the difference detection signal; and a first load detection circuit that controls an operation of the correction circuit, based on the current detection signal, and wherein the control circuit changes a setting voltage of the power-supply output, according to the signal level of the feedback signal.
摘要翻译： 开关电源装置包括开关元件; 输出电路; 反馈信号发生电路; 基于反馈信号驱动开关元件的控制电路，并控制电源输出的电压; 纠正电路，其校正反馈信号的信号电平，其中所述控制电路包括：产生触发信号的振荡电路; 产生电流检测信号的电流检测电路; 差分检测电路，其生成差分检测信号; 基于所述电流检测信号和所述差分检测信号产生截止触发信号的比较电路; 以及第一负载检测电路，其基于所述电流检测信号来控制所述校正电路的动作，并且其中，所述控制电路根据所述反馈信号的信号电平来改变所述电源输出的设定电压。
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公开(公告)号：US09270177B1
公开(公告)日：2016-02-23
申请号：US14549193
申请日：2014-11-20
发明人： Masaru Nakamura
CPC分类号： H02M3/158 , H02M1/088 , H02M3/156 , H02M3/1588 , H02M2001/0016 , H02M2001/0022 , H02M2001/0025 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
摘要： A switching power-supply device is configured to convert and output a first direct voltage to a second direct voltage by alternately turning on and off a first switching element and a second switching element, the switching power-supply device includes: a reference voltage generation unit; a comparison unit; and a driving signal generation unit, wherein the driving signal generation unit controls the period of supplying the driving signal to the driving unit, depending on an input-and-output condition, and wherein the reference voltage generation unit starts rising of the ramp signal during a period from a time point, at which the first switching element has been turned from on to off in response to the driving signal, to when the first switching element is turned on.
摘要翻译： 开关电源装置被配置为通过交替地接通和断开第一开关元件和第二开关元件来将第一直流电压转换并输出到第二直流电压，开关电源装置包括：基准电压产生单元 ; 比较单位 以及驱动信号生成单元，其中，所述驱动信号生成单元根据输入输出条件来控制向所述驱动单元供给所述驱动信号的周期，并且其中，所述参考电压生成单元在所述驱动信号生成单元期间开始所述斜坡信号的上升 从第一开关元件已经响应于驱动信号而从接通转为断开的时间点到第一开关元件导通时的时间段。
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公开(公告)号：US08957658B2
公开(公告)日：2015-02-17
申请号：US13755811
申请日：2013-01-31
发明人： Masaru Nakamura , Takayuki Konishi , Chie Isshi , Satoshi Nakamoto , Jung Soo Lee , Hiroaki Nakamura
摘要： A switching power-supply device includes a main switching element connected between a power-supply and an output terminal; a driving circuit that drives the main switching element; a capacitor that feeds power to the driving circuit; a charging circuit that charges the capacitor when the main switching element is switched from an on-state to an off-state; a switching control circuit that performs switching control of alternately switching the main switching element to the on-state and the off-state via the driving circuit; a voltage detection circuit that detects a voltage between both ends of the capacitor, and a driving control circuit that switches a state of prohibiting driving of the main switching element and a state of permitting driving of the main switching element, based on a difference between an output voltage output from the output terminal and a preset reference voltage and the voltage between both ends of the capacitor.
摘要翻译： 开关电源装置包括连接在电源和输出端子之间的主开关元件; 驱动所述主开关元件的驱动电路; 向驱动电路供电的电容器; 充电电路，当所述主开关元件从导通状态切换到断开状态时对所述电容器充电; 开关控制电路，其执行通过所述驱动电路交替地将所述主开关元件切换到导通状态和截止状态的开关控制; 检测电容器的两端之间的电压的电压检测电路以及切换主开关元件的禁止驱动状态的驱动控制电路和允许主开关元件的驱动的状态的驱动控制电路， 从输出端子输出的输出电压和预设的参考电压以及电容器两端的电压。
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公开(公告)号：US12003180B2
公开(公告)日：2024-06-04
申请号：US17486974
申请日：2021-09-28
发明人： Masaru Nakamura , Shinji Aso , Jianao Yao
CPC分类号： H02M3/1588 , H02M3/1557
摘要： A DC-DC converter according to one or more embodiments is disclosed that may include: a drive voltage switching circuit of a drive circuit that drives a synchronous rectification MOS transistor. The drive voltage switching circuit may switch a connection so that the drive circuit supplies power from the output voltage to the drive circuit in response to the drive voltage for supplying power to the drive circuit being set to be lower than the output voltage. The drive voltage switching circuit may switch a connection so that the drive circuit supplies power from the drive voltage in response to the drive voltage for supplying power to the drive circuit being set to be higher than the output voltage.
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公开(公告)号：US20170063227A1
公开(公告)日：2017-03-02
申请号：US14838919
申请日：2015-08-28
发明人： Masaru Nakamura
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , H02M3/156 , H02M2001/0009 , H02M2001/0032 , H02M2001/0035 , Y02B70/16
摘要： A switching power-supply device that converts a first DC voltage into a second DC voltage and outputs the second DC voltage by turning on-and-off a switching element connected between the input power source and an inductor, includes: a drive unit, which drives the switching element based on a drive signal; a control unit, which performs intermittent oscillation control; and an error signal generator, which generates an error signal based on an error between a voltage corresponding to the second DC voltage and a reference voltage, wherein the control unit controls a timing, at which the turning-on of the switching element is permitted in the intermittent oscillation control, based on a signal indicating a comparison result between the error signal and a threshold value and an OFF time of the switching element based on the drive signal.
摘要翻译： 一种开关电源装置，其将第一DC电压转换为第二DC电压，并且通过连接在所述输入电源和电感器之间的开关元件接通和断开来输出所述第二DC电压，所述开关电源装置包括：驱动单元， 基于驱动信号驱动开关元件; 执行间歇振荡控制的控制单元; 以及误差信号发生器，其基于与所述第二DC电压相对应的电压与参考电压之间的误差产生误差信号，其中所述控制单元控制允许所述开关元件接通的定时 基于表示基于驱动信号的误差信号与阈值之间的比较结果和开关元件的断开时间的信号的间歇振荡控制。
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