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公开(公告)号：US10211730B2
公开(公告)日：2019-02-19
申请号：US15393514
申请日：2016-12-29
发明人： Yosuke Toyama , Taichi Ogawa , Takeshi Ueno , Tetsuro Itakura , Osamu Watanabe , Takayuki Miyazaki
摘要： A DC-DC converter includes an input terminal, multiple output terminals, an inductor, a first switch, a first condenser, a second switch and a switch controller. One end of the inductor is connected to the input terminal. The first switch is subjected to on-off control to change a current flowing through the inductor. The first condenser has one end connected between the inductor and a first output terminal, which is one of the multiple output terminals, and has the other end connected to a ground. The second switch is connected between the inductor and the first condenser. The switch controller controls the second switch to turn on when the first switch is turned off while a first output voltage from the first output terminal is smaller than a predetermined first threshold value.
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公开(公告)号：US09997998B2
公开(公告)日：2018-06-12
申请号：US15444920
申请日：2017-02-28
发明人： Taichi Ogawa , Takeshi Ueno , Tetsuro Itakura , Osamu Watanabe , Takayuki Miyazaki , Yosuke Toyama
CPC分类号： H02M3/04 , H02M3/1563 , H03K3/037 , H03K5/159 , H03K2005/00013
摘要： An electronic circuit according to one embodiment of the present invention includes a first logic circuit, a second logic circuit, first and second capacitors, and a connection circuit. The first logic circuit has a first output terminal from which a first output signal based on a first input signal is output. The second logic circuit outputs a second output signal obtained by inversion of the first output signal is output in a steady state. The first and second capacitors each have one terminal at a first voltage. The connection circuit connects one of the first output terminal and the second output terminal to the first capacitor, and the other to the second capacitor. The connection circuit interchanges connection destinations of the first capacitor and the second capacitor in accordance with a received first connection control signal.
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公开(公告)号：US09213346B2
公开(公告)日：2015-12-15
申请号：US13737429
申请日：2013-01-09
发明人： Kei Shiraishi , Takeshi Ueno , Taichi Ogawa , Tetsuro Itakura
CPC分类号： G05F1/46 , H02M3/1584 , H02M2003/1586
摘要： There is provided a multiphase switching power supply circuit in which an input terminal receives an input voltage, an output terminal outputs an output voltage, first to an Nth power stages each include an inductor having one end connected to the output terminal; a high-side switch that connects another end of the inductor to the input terminal; and a low-side switch that connects the other end of the inductor to a reference voltage, a switch signal controller supplies first to an Nth control signals to the first to Nth power stages, the first to Nth control signals complementarily turning on and off their corresponding high-side switches and low-side switches at a frequency fs, and a switch signal controller determines phases of the first to Nth control signals according to a ration between inductance values of the inductors included in the first to Nth power stages.
摘要翻译： 提供一种多相开关电源电路，其中输入端接收输入电压，输出端输出输出电压，第一至第N功率级各自包括一端连接到输出端的电感; 将电感器的另一端连接到输入端子的高侧开关; 以及将电感器的另一端连接到参考电压的低侧开关，开关信号控制器向第一至第N功率级提供第一至第N控制信号，第一至第N控制信号互补地打开和关闭它们 频率为fs的相应的高侧开关和低侧开关，并且开关信号控制器根据包括在第一至第N功率级中的电感器的电感值之间的比例来确定第一至第N控制信号的相位。
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公开(公告)号：US09917516B2
公开(公告)日：2018-03-13
申请号：US15252838
申请日：2016-08-31
CPC分类号： H02M3/158 , H02M2001/0022 , H02M2001/0054 , Y02B70/1491
摘要： A DC-DC converter including an input, an output, a conversion circuit, and a switch control circuit. The input inputs input voltage. The output outputs output voltage. The conversion circuit a plurality of semiconductor switches, and converts the input voltage to the output voltage by switching operation of one or more semiconductor switches of the plurality of semiconductor switches. The switch control circuit selects one or more semiconductor switches performing the switching operation from the plurality of semiconductor switches based on the input voltage and a predetermined lookup table, and controls the switching operation of the one or more semiconductor switches.
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公开(公告)号：US09912235B2
公开(公告)日：2018-03-06
申请号：US15257312
申请日：2016-09-06
CPC分类号： H02M3/156 , H02M1/36 , H02M3/07 , H02M2001/0006 , H02M2001/0025 , H03K3/02337 , H03K5/2481
摘要： A boost converter includes an input, an output, a startup circuit, a first switch, a comparator circuit, a switching circuit, a control circuit, a converter circuit, and a switch control circuit. The startup circuit boosts an input voltage up to a first output voltage. The comparator circuit outputs a first signal corresponding to the difference between the output voltage and a first reference voltage. The switching circuit outputs a second voltage based on the first signal. The control circuit outputs a second signal corresponding to the difference between the output voltage and a second reference voltage. The converter circuit boosts the input voltage based on the second signal, and outputs the output voltage. The switch control circuit generates a third signal based on the second signal, and outputs the third signal to the first switch.
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公开(公告)号：US09559582B2
公开(公告)日：2017-01-31
申请号：US14926239
申请日：2015-10-29
发明人： Taichi Ogawa , Takeshi Ueno , Tetsuro Itakura , Takayuki Miyazaki
CPC分类号： H02M3/04 , H02M3/156 , H02M2001/0032 , H02M2001/0041 , H03K17/082 , H03K17/30 , H03K2217/0036 , Y02B70/16
摘要： According to an embodiment, a switching power supply circuit includes a comparison circuit and an operation control circuit. The comparison circuit operates intermittently in response to an operation control signal. The comparison circuit compares a feedback voltage based on the output voltage with a reference voltage to generate a comparison result signal representing a result of comparison. The operation control circuit generates the operation control signal based on the clock signal and the comparison result signal. The operation control circuit generates an operation control signal synchronous with the clock signal, if the comparison result signal is at the first level.
摘要翻译： 根据实施例，开关电源电路包括比较电路和运算控制电路。 比较电路响应于操作控制信号间歇地工作。 比较电路将基于输出电压的反馈电压与参考电压进行比较，以产生表示比较结果的比较结果信号。 运算控制电路基于时钟信号和比较结果信号生成运算控制信号。 如果比较结果信号处于第一级，则操作控制电路产生与时钟信号同步的操作控制信号。
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公开(公告)号：US10461236B2
公开(公告)日：2019-10-29
申请号：US15063809
申请日：2016-03-08
发明人： Takeshi Ueno , Taichi Ogawa
摘要： According to an embodiment, a thermoelectric generator includes a thermoelectric element and a DC to DC converter. The thermoelectric element converts heat energy into electric energy. The DC to DC converter increases an input voltage applied by the thermoelectric element. The input voltage is higher than a voltage which is half an open voltage of the thermoelectric element.
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公开(公告)号：US09256241B2
公开(公告)日：2016-02-09
申请号：US14488555
申请日：2014-09-17
发明人： Taichi Ogawa , Takeshi Ueno , Shoji Ootaka , Tetsuro Itakura , Takayuki Miyazaki
摘要： There is provided a reference voltage generating apparatus including: a reference voltage source, a voltage retaining circuit, a switch and a controller. The reference voltage source generates a reference voltage. The voltage retaining circuit includes a first element circuit and a second element circuit, and the voltage retaining circuit outputs a voltage of a connection node between a first terminal of the first element circuit and a second terminal of the second element circuit. The switch is connected between the connection node and the reference voltage source. The controller controls the reference voltage source and the switch. The first element circuit includes at least a resistance component and the first element circuit is supplied with a first voltage at a third terminal and the second element circuit includes a resistance component and a capacity component and the second element circuit is supplied with a second voltage at a fourth terminal.
摘要翻译： 提供了一种参考电压产生装置，包括：参考电压源，电压保持电路，开关和控制器。 参考电压源产生参考电压。 电压保持电路包括第一元件电路和第二元件电路，并且电压保持电路在第一元件电路的第一端子和第二元件电路的第二端子之间输出连接节点的电压。 开关连接在连接节点和参考电压源之间。 控制器控制参考电压源和开关。 第一元件电路至少包括电阻分量，并且第一元件电路在第三端子处被提供有第一电压，并且第二元件电路包括电阻分量和电容分量，并且第二元件电路被提供有第二电压 第四个终端。
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公开(公告)号：US10056837B2
公开(公告)日：2018-08-21
申请号：US15447589
申请日：2017-03-02
发明人： Yosuke Toyama , Taichi Ogawa , Takeshi Ueno , Tetsuro Itakura , Osamu Watanabe , Takayuki Miyazaki
CPC分类号： H02M3/158 , H02M1/08 , H02M2001/009
摘要： According to one embodiment, a DC-DC converter, includes: an inductor configured to be supplied with an input voltage; a plurality of rectifiers connected in parallel to the inductor; a plurality of p-MOS transistors connected in series to the respective rectifiers; a switch configured to connect an output side of the inductor to a reference potential; and a control circuit configured to control the p-MOS transistors and the switch. The control circuit performs control to supply a voltage to turn on a first p-MOS transistor selected from among the p-MOS transistors to a gate terminal of the first p-MOS transistor, and to supply a voltage depending on an output voltage of the first p-MOS transistor to a gate terminal of a second p-MOS transistor other than the first p-MOS transistor among the p-MOS transistors.
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公开(公告)号：US20180006561A1
公开(公告)日：2018-01-04
申请号：US15447589
申请日：2017-03-02
发明人： Yosuke TOYAMA , Taichi Ogawa , Takeshi Ueno , Tetsuro Itakura , Osamu Watanabe , Takayuki Miyazaki
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , H02M1/08 , H02M2001/009
摘要： According to one embodiment, a DC-DC converter, includes: an inductor configured to be supplied with an input voltage; a plurality of rectifiers connected in parallel to the inductor; a plurality of p-MOS transistors connected in series to the respective rectifiers; a switch configured to connect an output side of the inductor to a reference potential; and a control circuit configured to control the p-MOS transistors and the switch. The control circuit performs control to supply a voltage to turn on a first p-MOS transistor selected from among the p-MOS transistors to a gate terminal of the first p-MOS transistor, and to supply a voltage depending on an output voltage of the first p-MOS transistor to a gate terminal of a second p-MOS transistor other than the first p-MOS transistor among the p-MOS transistors.
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