公开(公告)号：US07876081B2

公开(公告)日：2011-01-25

申请号：US12279098

申请日：2007-11-28

申请人： Shogo Hachiya ,  Ko Takemura

发明人： Shogo Hachiya ,  Ko Takemura

IPC分类号： G05F1/565 ,  G05F1/575

CPC分类号： H02M3/156 ,  H02M2001/0032 ,  Y02B70/16

摘要： A comparator-system DC-DC converter 1 according to an embodiment of the present invention comprises a control unit 200 which has a comparator section 20, 40 which compares the output voltage of the voltage conversion section with a reference voltage and determines a predetermined ON width of the ON pulse of the control signal Ssw or a predetermined OFF width of the OFF pulse of the control signal Ssw, and frequency control means 25 which compares the control signal Ssw with reference clock Cref and adjusts the ON width or OFF width so that the frequency of the control signal Ssw is constant. The frequency control means 25 detects a state where the output current of the voltage conversion section 100 is 0 A or a state where the output current is going to be 0 A and stops the processing to adjust the ON width or OFF width.

摘要翻译： 根据本发明的实施例的比较器系统DC-DC转换器1包括控制单元200，其具有比较器部分20,40，比较器部分20,40将电压转换部分的输出电压与参考电压进行比较，并且确定预定的导通宽度 控制信号Ssw的ON脉冲或控制信号Ssw的OFF脉冲的预定OFF宽度，以及频率控制装置25，其将控制信号Ssw与参考时钟Cref进行比较，并调整ON宽度或OFF宽度，使得 控制信号Ssw的频率是恒定的。 频率控制装置25检测电压转换部分100的输出电流为0A或输出电流为0A的状态，并停止调整ON宽度或OFF宽度的处理。

公开(公告)号：US07872457B2

公开(公告)日：2011-01-18

申请号：US12723925

申请日：2010-03-15

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：US20050237683A1

公开(公告)日：2005-10-27

申请号：US11165181

申请日：2005-06-24

申请人： Ko Takemura ,  Kenji Otani

发明人： Ko Takemura ,  Kenji Otani

IPC分类号： G11C11/414 ,  H01L21/331 ,  H01L21/822 ,  H01L23/62 ,  H01L27/02 ,  H01L27/04 ,  H01L27/06 ,  H01L29/73 ,  H02H9/00 ,  H03K19/0175

CPC分类号： H01L27/0255 ,  H01L27/0292

摘要： To a plurality of terminals are connected, one to one, a plurality of current mirror circuits each having a first load portion through which a first current flows when an overvoltage is applied and a second load portion through which a second current proportional to the first current flows. The first load portion of the current mirror circuit connected to one of the plurality of terminals is shared as the first load portions of the current mirror circuits connected to the others of the plurality of terminals. The shared first load portion includes an overvoltage protection circuit. The second load portions of the current mirror circuits connected to the plurality of terminals each include an overvoltage detection circuit for detecting the second current.

摘要翻译： 多个端子一对一地连接多个电流镜电路，每个电流镜电路具有第一负载部分，当施加过电压时，第一电流流经第一负载部分;以及第二负载部分，与第一电流成比例的第二电流 流动。 连接到多个端子中的一个端子的电流镜电路的第一负载部分被共享为连接到多个端子中的其它端子的电流镜电路的第一负载部分。 共享的第一负载部分包括过电压保护电路。 连接到多个端子的电流镜电路的第二负载部分各自包括用于检测第二电流的过电压检测电路。

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：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：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：US06924533B2

公开(公告)日：2005-08-02

申请号：US10385435

申请日：2003-03-12

申请人： Ko Takemura ,  Kenji Otani

发明人： Ko Takemura ,  Kenji Otani

IPC分类号： G11C11/414 ,  H01L21/331 ,  H01L21/822 ,  H01L23/62 ,  H01L27/02 ,  H01L27/04 ,  H01L27/06 ,  H01L29/73 ,  H02H9/00 ,  H03K19/0175

CPC分类号： H01L27/0255 ,  H01L27/0292

摘要： To a plurality of terminals are connected, one to one, a plurality of current mirror circuits each having a first load portion through which a first current flows when an overvoltage is applied and a second load portion through which a second current proportional to the first current flows. The first load portion of the current mirror circuit connected to one of the plurality of terminals is shared as the first load portions of the current mirror circuits connected to the others of the plurality of terminals. The shared first load portion includes an overvoltage protection circuit. The second load portions of the current mirror circuits connected to the plurality of terminals each include an overvoltage detection circuit for detecting the second current.

摘要翻译： 多个端子一对一地连接多个电流镜电路，每个电流镜电路具有第一负载部分，当施加过电压时，第一电流流经第一负载部分;以及第二负载部分，与第一电流成比例的第二电流 流动。 连接到多个端子中的一个端子的电流镜电路的第一负载部分被共享为连接到多个端子中的其它端子的电流镜电路的第一负载部分。 共享的第一负载部分包括过电压保护电路。 连接到多个端子的电流镜电路的第二负载部分各自包括用于检测第二电流的过电压检测电路。

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。

公开(公告)号：US20090237049A1

公开(公告)日：2009-09-24

申请号：US12279098

申请日：2007-11-28

申请人： Shogo Hachiya ,  Ko Takemura

发明人： Shogo Hachiya ,  Ko Takemura

IPC分类号： G05F1/10

CPC分类号： H02M3/156 ,  H02M2001/0032 ,  Y02B70/16

摘要： A comparator-system DC-DC converter 1 according to an embodiment of the present invention comprises a control unit 200 which has a comparator section 20, 40 which compares the output voltage of the voltage conversion section with a reference voltage and determines a predetermined ON width of the ON pulse of the control signal Ssw or a predetermined OFF width of the OFF pulse of the control signal Ssw, and frequency control means 25 which compares the control signal Ssw with reference clock Cref and adjusts the ON width or OFF width so that the frequency of the control signal Ssw is constant. The frequency control means 25 detects a state where the output current of the voltage conversion section 100 is 0A or a state where the output current is going to be 0A and stops the processing to adjust the ON width or OFF width.

摘要翻译： 根据本发明的实施例的比较器系统DC-DC转换器1包括控制单元200，其具有比较器部分20,40，比较器部分20,40将电压转换部分的输出电压与参考电压进行比较，并确定预定的导通宽度 控制信号Ssw的ON脉冲或控制信号Ssw的OFF脉冲的预定OFF宽度，以及频率控制装置25，其将控制信号Ssw与参考时钟Cref进行比较，并调整ON宽度或OFF宽度，使得 控制信号Ssw的频率是恒定的。 频率控制装置25检测电压转换部分100的输出电流为0A或输出电流将为0A的状态，并停止调整ON宽度或OFF宽度的处理。

公开(公告)号：US20090160414A1

公开(公告)日：2009-06-25

申请号：US12095270

申请日：2007-10-03

申请人： Shogo Hachiya ,  Ko Takemura

发明人： Shogo Hachiya ,  Ko Takemura

IPC分类号： G05F1/10 ,  H02M3/135

CPC分类号： H02M3/156

摘要： The comparator-system DC-DC converter 1 comprises the voltage conversion section 100 and the control unit 200. The control unit 200 comprises comparator sections 20 and 40 which compare the output voltage of the voltage conversion section 100 and the reference voltage, and determine a predetermined ON width of the ON pulse or the OFF width of the OFF pulse of the control signal Ssw, and a counter section 60 which counts at least either one of the ON pulses and OFF pulses of the control signal and counts the reference clocks to adjust the predetermined ON width so that the ratio between the count value of the control signal Ssw and the count value of the reference clock is M:N where M and N are natural numbers.

摘要翻译： 比较器系统DC-DC转换器1包括电压转换部分100和控制单元200.控制单元200包括比较部分20和40，比较电压转换部分100的输出电压和参考电压，并确定一个 控制信号Ssw的接通脉冲的预定ON宽度或OFF脉冲的OFF宽度，以及对控制信号的ON脉冲和OFF脉冲中的至少一个进行计数的计数部60，并对参考时钟进行计数以进行调整 预定的ON宽度，使得控制信号Ssw的计数值与参考时钟的计数值之间的比率为M：N，其中M和N为自然数。