专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08686704B2 Current sense circuit and switching regulator using the same 有权
标题翻译：电流检测电路和开关稳压器使用相同
公开(公告)号：US08686704B2
公开(公告)日：2014-04-01
申请号：US12721054
申请日：2010-03-10
申请人： Takuya Ishii , Takashi Ryu , Satoshi Wada
发明人： Takuya Ishii , Takashi Ryu , Satoshi Wada
IPC分类号： G05F1/56 , G05F1/565 , G05F1/575
CPC分类号： H02M3/156 , H02M2001/0009
摘要： A current sense circuit for use with a switching regulator including a first transistor, connected to an inductor, configured to switch a current flowing through the inductor from a power supply; and a second transistor, connected to a node to which the inductor and the first transistor are connected, configured to be turned on during a part of an OFF period of the first transistor. The current sense circuit includes a current generator configured to generate a sense current corresponding to a current flowing through the first transistor; a hold circuit configured to output a voltage corresponding to the sense current during an ON period of the first transistor, and to hold and output the voltage corresponding to the sense current during the OFF period of the first transistor; and an output transistor configured to generate a current corresponding to the voltage output by the hold circuit.
摘要翻译：一种用于开关调节器的电流检测电路，包括连接到电感器的第一晶体管，其被配置为从电源切换流过电感器的电流; 以及连接到所述电感器和所述第一晶体管连接到的节点的第二晶体管，被配置为在所述第一晶体管的OFF周期的一部分期间导通。电流检测电路包括电流发生器，其被配置为产生与流过第一晶体管的电流相对应的感测电流; 保持电路，被配置为在所述第一晶体管的导通时段期间输出与所述感测电流相对应的电压，并且在所述第一晶体管的所述断开期间保持并输出与所述感测电流对应的电压; 以及输出晶体管，被配置为产生与由保持电路输出的电压相对应的电流。

2. 发明申请

US20100289473A1 CURRENT SENSE CIRCUIT AND SWITCHING REGULATOR USING THE SAME 有权
标题翻译：电流检测电路和切换稳压器
公开(公告)号：US20100289473A1
公开(公告)日：2010-11-18
申请号：US12721054
申请日：2010-03-10
申请人： Takuya Ishii , Takashi Ryu , Satoshi Wada
发明人： Takuya Ishii , Takashi Ryu , Satoshi Wada
IPC分类号： G05F1/10
CPC分类号： H02M3/156 , H02M2001/0009
摘要： A current sense circuit for use with a switching regulator including a first transistor, connected to an inductor, configured to switch a current flowing through the inductor from a power supply; and a second transistor, connected to a node to which the inductor and the first transistor are connected, configured to be turned on during a part of an OFF period of the first transistor. The current sense circuit includes a current generator configured to generate a sense current corresponding to a current flowing through the first transistor; a hold circuit configured to output a voltage corresponding to the sense current during an ON period of the first transistor, and to hold and output the voltage corresponding to the sense current during the OFF period of the first transistor; and an output transistor configured to generate a current corresponding to the voltage output by the hold circuit.
摘要翻译：一种用于开关调节器的电流检测电路，包括连接到电感器的第一晶体管，其被配置为从电源切换流过电感器的电流; 以及连接到所述电感器和所述第一晶体管连接到的节点的第二晶体管，被配置为在所述第一晶体管的OFF周期的一部分期间导通。电流检测电路包括电流发生器，其被配置为产生与流过第一晶体管的电流相对应的感测电流; 保持电路，被配置为在所述第一晶体管的导通时段期间输出与所述感测电流相对应的电压，并且在所述第一晶体管的所述断开期间保持并输出与所述感测电流对应的电压; 以及输出晶体管，被配置为产生与由保持电路输出的电压相对应的电流。

3. 发明授权

US07825646B2 Step-up converter 有权
标题翻译：升压转换器
公开(公告)号：US07825646B2
公开(公告)日：2010-11-02
申请号：US11905399
申请日：2007-09-28
申请人： Takuya Ishii , Mikio Motomori , Junichi Morita , Takashi Ryu , Masaaki Koto , Makoto Ishimaru , Kazuhito Kimura , Satoshi Wada
发明人： Takuya Ishii , Mikio Motomori , Junichi Morita , Takashi Ryu , Masaaki Koto , Makoto Ishimaru , Kazuhito Kimura , Satoshi Wada
IPC分类号： G05F1/40
CPC分类号： H02M3/156
摘要： The present invention provides a current-mode control step-up converter capable of reducing the minimum duty ratio to a sufficiently small value and facilitating the setting of the maximum duty ratio. The step-up converter comprises a current detector 9 for generating a current detection signal Vc corresponding to the current of a rectifier 4; an error amplifier 8 for generating an error signal Ve corresponding to an output DC voltage Vo; and a control circuit 10 for turning ON/OFF the main switch 3 on the basis of the current detection signal Vc and the error signal Ve. The control circuit 10 comprises a comparator 11 and a timer circuit 12. With this configuration, the ON time of the main switch 3 is set at a predetermined value, and the valley value of an inductor current changing in a triangular waveform is controlled. Hence, the OFF time of the main switch is adjusted to stabilize the output. Since the ON time of the main switch 3 can be set as desired, the minimum duty ratio can be reduced to zero or a sufficiently small value.
摘要翻译：本发明提供了一种电流模式控制升压转换器，其能够将最小占空比降低到足够小的值，并且有助于设定最大占空比。升压转换器包括用于产生与整流器4的电流相对应的电流检测信号Vc的电流检测器9; 用于产生对应于输出DC电压Vo的误差信号Ve的误差放大器8; 以及用于根据电流检测信号Vc和误差信号Ve导通/断开主开关3的控制电路10。控制电路10包括比较器11和定时器电路12.通过这种配置，主开关3的接通时间被设定为预定值，并且控制以三角波形变化的电感器电流的谷值。因此，主开关的断开时间被调节以稳定输出。由于可以根据需要设定主开关3的导通时间，所以可以将最小占空比降低到零或足够小的值。

4. 发明授权

US07567069B2 Step-up power supply device 有权
标题翻译：升压电源装置
公开(公告)号：US07567069B2
公开(公告)日：2009-07-28
申请号：US11898701
申请日：2007-09-14
申请人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Satoshi Wada , Rumi Nakai
发明人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Satoshi Wada , Rumi Nakai
IPC分类号： G05F1/40 , H02M3/18
CPC分类号： H02M1/36 , Y10S323/901
摘要： A step-up power supply device includes: a step-up converter; a startup circuit which controls the on/off operation of a switch element of the step-up converter when an output voltage of the device is smaller than a reference voltage; and a control circuit which operates in substitution for the startup circuit when the output voltage is higher than the reference voltage to control the on/off operation of the switch element such that the output voltage reaches a target value. The startup circuit includes an oscillation circuit for generating a pulse signal which has a predetermined on/off ratio, a current comparison circuit for comparing a current of the switch element with a predetermined restriction value, and a drive circuit for generating a drive signal based on which the switch element is turned on/off, the drive signal being generated from the pulse signal to turn on the switch element, and the drive signal being generated from the output of the current comparison circuit or the pulse signal to turn off the switch element.
摘要翻译：升压电源装置包括：升压转换器; 启动电路，当所述器件的输出电压小于参考电压时，控制所述升压转换器的开关元件的接通/断开操作; 以及控制电路，其在输出电压高于基准电压时代替启动电路，以控制开关元件的导通/截止操作，使得输出电压达到目标值。启动电路包括用于产生具有预定的导通/关断比的脉冲信号的振荡电路，用于将开关元件的电流与预定限制值进行比较的电流比较电路，以及用于产生基于所述开关元件被接通/断开，所述驱动信号从所述脉冲信号产生，以接通所述开关元件，并且所述驱动信号是从所述当前比较电路的输出或所述脉冲信号产生的，以将所述开关元件。

5. 发明申请

US20080074158A1 Step-up power supply device 有权
标题翻译：升压电源装置
公开(公告)号：US20080074158A1
公开(公告)日：2008-03-27
申请号：US11898701
申请日：2007-09-14
申请人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Satoshi Wada , Rumi Nakai
发明人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Satoshi Wada , Rumi Nakai
IPC分类号： H03L7/00
CPC分类号： H02M1/36 , Y10S323/901
摘要： A step-up power supply device includes: a step-up converter; a startup circuit which controls the on/off operation of a switch element of the step-up converter when an output voltage of the device is smaller than a reference voltage; and a control circuit which operates in substitution for the startup circuit when the output voltage is higher than the reference voltage to control the on/off operation of the switch element such that the output voltage reaches a target value. The startup circuit includes an oscillation circuit for generating a pulse signal which has a predetermined on/off ratio, a current comparison circuit for comparing a current of the switch element with a predetermined restriction value, and a drive circuit for generating a drive signal based on which the switch element is turned on/off, the drive signal being generated from the pulse signal to turn on the switch element, and the drive signal being generated from the output of the current comparison circuit or the pulse signal to turn off the switch element.
摘要翻译：升压电源装置包括：升压转换器; 启动电路，当所述器件的输出电压小于参考电压时，控制所述升压转换器的开关元件的接通/断开操作; 以及控制电路，其在输出电压高于基准电压时代替启动电路，以控制开关元件的导通/截止操作，使得输出电压达到目标值。启动电路包括用于产生具有预定的导通/关断比的脉冲信号的振荡电路，用于将开关元件的电流与预定限制值进行比较的电流比较电路，以及用于产生基于所述开关元件被接通/断开，所述驱动信号从所述脉冲信号产生，以接通所述开关元件，并且所述驱动信号是从所述当前比较电路的输出或所述脉冲信号产生的，以将所述开关元件。

6. 发明申请

US20080211475A1 Step-up converter 有权
标题翻译：升压转换器
公开(公告)号：US20080211475A1
公开(公告)日：2008-09-04
申请号：US11905399
申请日：2007-09-28
申请人： Takuya Ishii , Mikio Motomori , Junichi Morita , Takashi Ryu , Masaaki Koto , Makoto Ishimaru , Kazuhito Kimura , Satoshi Wada
发明人： Takuya Ishii , Mikio Motomori , Junichi Morita , Takashi Ryu , Masaaki Koto , Makoto Ishimaru , Kazuhito Kimura , Satoshi Wada
IPC分类号： G05F1/565
CPC分类号： H02M3/156
摘要： The present invention provides a current-mode control step-up converter capable of reducing the minimum duty ratio to a sufficiently small value and facilitating the setting of the maximum duty ratio. The step-up converter comprises a current detector 9 for generating a current detection signal Vc corresponding to the current of a rectifier 4; an error amplifier 8 for generating an error signal Ve corresponding to an output DC voltage Vo; and a control circuit 10 for turning ON/OFF the main switch 3 on the basis of the current detection signal Vc and the error signal Ve. The control circuit 10 comprises a comparator 11 and a timer circuit 12. With this configuration, the ON time of the main switch 3 is set at a predetermined value, and the valley value of an inductor current changing in a triangular waveform is controlled. Hence, the OFF time of the main switch is adjusted to stabilize the output. Since the ON time of the main switch 3 can be set as desired, the minimum duty ratio can be reduced to zero or a sufficiently small value.
摘要翻译：本发明提供了一种电流模式控制升压转换器，其能够将最小占空比降低到足够小的值，并且有助于设定最大占空比。升压转换器包括用于产生与整流器4的电流相对应的电流检测信号Vc的电流检测器9; 用于产生对应于输出DC电压Vo的误差信号Ve的误差放大器8; 以及用于根据电流检测信号Vc和误差信号Ve导通/断开主开关3的控制电路10。控制电路10包括比较器11和定时器电路12。利用这种配置，主开关3的接通时间被设定为预定值，并且控制以三角波形变化的电感器电流的谷值。因此，主开关的断开时间被调节以稳定输出。由于可以根据需要设定主开关3的导通时间，所以可以将最小占空比降低到零或足够小的值。

7. 发明申请

US20080079410A1 Power supply device 有权
标题翻译：电源设备
公开(公告)号：US20080079410A1
公开(公告)日：2008-04-03
申请号：US11902089
申请日：2007-09-19
申请人： Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Yoichi Deguchi , Satoshi Wada , Yoshihisa Minami
发明人： Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Yoichi Deguchi , Satoshi Wada , Yoshihisa Minami
IPC分类号： G05F1/575 , G05F1/618
CPC分类号： G05F1/575
摘要： A power supply device includes an inductor controlled by switching to be charged or discharged such that a DC input voltage is boosted and a capacitor which smoothes the boosted voltage to generate a DC output voltage. Specifically, the power supply device further includes a transistor connected between the inductor and the capacitor to carry out a rectification function; an output voltage determination circuit which refers to the DC input voltage and the DC output voltage to determine the level of these voltages; and a current control circuit which controls a current flowing through the transistor such that the current has a predetermined value when the output voltage determination circuit determines that the DC output voltage is lower than the DC input voltage.
摘要翻译：电源装置包括通过切换进行充电或放电控制的电感器，使得DC输入电压升压，以及电容器，其使升压电压平滑以产生DC输出电压。具体地，电源装置还包括连接在电感器和电容器之间的晶体管，以实现整流功能; 输出电压确定电路，其参考DC输入电压和DC输出电压以确定这些电压的电平; 以及电流控制电路，其控制流过所述晶体管的电流，使得当所述输出电压确定电路确定所述DC输出电压低于所述DC输入电压时，所述电流具有预定值。

8. 发明授权

US07852059B2 Power supply device 有权
标题翻译：电源设备
公开(公告)号：US07852059B2
公开(公告)日：2010-12-14
申请号：US11902089
申请日：2007-09-19
申请人： Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Yoichi Deguchi , Satoshi Wada , Yoshihisa Minami
发明人： Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Yoichi Deguchi , Satoshi Wada , Yoshihisa Minami
IPC分类号： G05F1/40
CPC分类号： G05F1/575
摘要： A power supply device includes an inductor controlled by switching to be charged or discharged such that a DC input voltage is boosted and a capacitor which smoothes the boosted voltage to generate a DC output voltage. Specifically, the power supply device further includes a transistor connected between the inductor and the capacitor to carry out a rectification function; an output voltage determination circuit which refers to the DC input voltage and the DC output voltage to determine the level of these voltages; and a current control circuit which controls a current flowing through the transistor such that the current has a predetermined value when the output voltage determination circuit determines that the DC output voltage is lower than the DC input voltage.
摘要翻译：电源装置包括通过切换进行充电或放电控制的电感器，使得DC输入电压升压，以及电容器，其使升压电压平滑以产生DC输出电压。具体地，电源装置还包括连接在电感器和电容器之间的晶体管，以实现整流功能; 输出电压确定电路，其参考DC输入电压和DC输出电压以确定这些电压的电平; 以及电流控制电路，其控制流过所述晶体管的电流，使得当所述输出电压确定电路确定所述DC输出电压低于所述DC输入电压时，所述电流具有预定值。

9. 发明授权

US07592792B2 Power supply 有权
标题翻译：电源
公开(公告)号：US07592792B2
公开(公告)日：2009-09-22
申请号：US11547487
申请日：2005-03-24
申请人： Takashi Ryu , Hiroki Akashi , Takuya Ishii , Hiroshi Saito
发明人： Takashi Ryu , Hiroki Akashi , Takuya Ishii , Hiroshi Saito
IPC分类号： G05F1/00 , G05F1/29
CPC分类号： H02M3/156
摘要： There are provided an inductive load current control circuit for detecting and controlling a current flowing to an inductive load with high accuracy, and a power supply.The inductive load current control circuit includes first and second switch elements connected in series between an input voltage and a ground potential, an inductive load connected to a connection point between the first and second switch elements, a third switch element having one terminal connected to the connection point between the first and second switch elements, a current comparator connected to another terminal of the third switch element to compare an output current of the third switch element with a reference current, decide and output a magnitude relation, and a switch element control circuit that controls transition from a state in which the second switch element is turned on to a state in which the first switch element is turned on according to an output of the current comparator.
摘要翻译：提供了一种感应负载电流控制电路，用于高精度地检测和控制流向电感负载的电流和电源。感性负载电流控制电路包括串联连接在输入电压和接地电位之间的第一和第二开关元件，连接到第一和第二开关元件之间的连接点的电感负载，第三开关元件，其一个端子连接到第一开关元件和第二开关元件之间的连接点，连接到第三开关元件的另一端子的电流比较器，以将第三开关元件的输出电流与参考电流进行比较，确定并输出幅度关系，以及开关元件控制电路其根据电流比较器的输出控制从第二开关元件导通的状态到第一开关元件导通的状态的转变。

10. 发明授权

US07479771B2 Current detection circuit and switching power supply 有权
标题翻译：电流检测电路和开关电源
公开(公告)号：US07479771B2
公开(公告)日：2009-01-20
申请号：US11843896
申请日：2007-08-23
申请人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Hirohisa Tanabe , Tomoya Shigemi
发明人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Hirohisa Tanabe , Tomoya Shigemi
IPC分类号： G05F1/00
CPC分类号： H02M3/156 , H02M2001/0009
摘要： A current detection circuit of the present invention has a switching device 1; an auxiliary switching device 2; an offset voltage source comprising an offset resistor device 7 and a current source circuit 8; a compensation circuit, comprising a differential amplifier 4 and a compensation transistor 5, for adjusting the output current of the auxiliary switching device 2 so that the potential obtained by subtracting the voltage drop across the offset resistor device 7 from the output potential of the switching device 1 is equal to the output potential of the auxiliary switching device 2, being configured that the detection level of the current flowing in the switching device 1 is shifted by an offset amount.
摘要翻译：本发明的电流检测电路具有开关元件1，辅助切换装置2; 偏移电压源，包括偏移电阻器件7和电流源电路8; 补偿电路，包括差分放大器4和补偿晶体管5，用于调整辅助开关器件2的输出电流，使得通过从开关器件的输出电位减去偏移电阻器件7上的电压降而获得的电位 1等于辅助开关装置2的输出电位，被配置为使在开关装置1中流动的电流的检测电平偏移了偏移量。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式