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    • 14. 发明授权
    • Performance controller for a step down current mode switching regulator
    • 用于降压电流模式开关稳压器的性能控制器
    • US07282900B2
    • 2007-10-16
    • US11206977
    • 2005-08-19
    • Richard K. OswaldTamotsu YamamotoTakashi RyuMikio MotomoriTakuya Ishii
    • Richard K. OswaldTamotsu YamamotoTakashi RyuMikio MotomoriTakuya Ishii
    • G05F1/40
    • H02M3/1588Y02B70/1466
    • A method of regulating an output voltage by utilizing a switching regulator, where the switching regulator includes a high side switch, a low side switch having an active diode, a controller coupled to the high side switch and the low side switch, and a current measuring circuit coupled to the high side switch. The method includes the steps of: measuring the output voltage and if the output voltage is below a desired level, activating the high side switch so as to provide current to a load capacitor via a load inductor, if the voltage is above the desired level, activating the low side switch so as to sink current from the load capacitor via the load inductor; and utilizing the current measuring circuit to measure the current flowing through the high side switch in either a positive direction or a negative direction, where the controller is operable for controlling the current measuring circuit and disabling active components contained in the current measuring circuit and the active diode when the active components are not utilized during operation of the switching regulator so as to reduce operational power requirements of the switching regulator.
    • 一种通过利用开关调节器调节输出电压的方法,其中开关调节器包括高侧开关,具有有源二极管的低侧开关,耦合到高侧开关和低侧开关的控制器以及电流测量 电路耦合到高侧开关。 该方法包括以下步骤:测量输出电压,并且如果输出电压低于期望电平,则激活高侧开关以便通过负载电感器向负载电容器提供电流,如果电压高于所需电平, 激活低侧开关,以便经由负载电感器从负载电容器吸收电流; 并利用电流测量电路来测量在正方向或负方向上流过高侧开关的电流,其中控制器可操作用于控制电流测量电路并禁用包含在电流测量电路中的有源元件和有源 当在开关调节器的操作期间不使用有源组件以减少开关调节器的操作功率需求时,二极管。
    • 15. 发明授权
    • Current mode switching regulator with predetermined on time
    • 电流模式开关稳压器,具有预定的时间
    • US07250746B2
    • 2007-07-31
    • US11092814
    • 2005-03-30
    • Richard K. OswaldTamotsu YamamotoHiroshi SaitoTakuya IshiiTakashi RyuHiroki AkashiTakeshi Tanaka
    • Richard K. OswaldTamotsu YamamotoHiroshi SaitoTakuya IshiiTakashi RyuHiroki AkashiTakeshi Tanaka
    • G05F1/618G05F1/575
    • H02M3/156
    • A power supply switching regulator including a common terminal; an input terminal for supplying a direct current input; an output terminal; a recirculating diode having a first terminal connected to the common terminal; an inductor having a first terminal connected to a second terminal of the recirculation diode and a second terminal connected to the output terminal; a capacitor having a first terminal connected to the output terminal and a second terminal connected to the common terminal; a switch connected between the input terminal and the first terminal of the inductor, the switch operable for switching between an ON state in which the direct current input is coupled to the inductor, and an OFF state in which the direct current input is isolated from the inductor; and a controller coupled to the switch and operable for controlling the amount of time the switch is in the ON state and the OFF state such that the duration of time the switch is in the ON state is inversely proportional to the difference between the voltage at the input terminal and the voltage at the output terminal.
    • 一种电源开关调节器,包括公共端子; 用于提供直流输入的输入端; 输出端子; 循环二极管,其具有连接到所述公共端子的第一端子; 电感器,其具有连接到所述再循环二极管的第二端子的第一端子和连接到所述输出端子的第二端子; 电容器,其具有连接到所述输出端子的第一端子和连接到所述公共端子的第二端子; 连接在电感器的输入端子和第一端子之间的开关,所述开关可操作用于在其中直流输入耦合到电感器的导通状态和直流输入与电感器隔离的截止状态之间切换 电感; 以及控制器,其耦合到所述开关并且可操作用于控制所述开关处于导通状态和断开状态的时间量,使得所述开关处于导通状态的持续时间与所述开关处于所述开关状态的电压之间的差成反比 输入端子和输出端子的电压。
    • 16. 发明申请
    • Level shift circuit
    • 电平移位电路
    • US20070085566A1
    • 2007-04-19
    • US11495774
    • 2006-07-31
    • Masaaki KotoKazuhito KimuraTakuya IshiiKazuyuki Moritake
    • Masaaki KotoKazuhito KimuraTakuya IshiiKazuyuki Moritake
    • H03K19/0175
    • H03K3/356104
    • A level shift circuit has a driving circuit and an output circuit. The driving circuit has a clamp circuit for receiving first and second bias potentials, outputting first and second drive signals which are not less than a reference potential, less than the first bias potential, and complementary to each other, and also outputting third and fourth drive signals which are higher than the second bias potential, not more than a power source potential, and complementary to each other. The output circuit has a first output transistor of a first conductivity type and a second output transistor of a second conductivity type which are connected in series to each other. The first output transistor has a gate for receiving the first drive signal and one electrode for receiving the reference potential. The second output transistor has a gate for receiving the third drive signal and one electrode for receiving the power source potential.
    • 电平移位电路具有驱动电路和输出电路。 驱动电路具有用于接收第一和第二偏置电位的钳位电路,输出小于第一偏置电位并且彼此互补的不小于参考电位的第一和第二驱动信号,并且还输出第三和第四驱动 高于第二偏置电位的信号,不大于电源电位,彼此互补。 输出电路具有彼此串联连接的第一导电类型的第一输出晶体管和第二导电类型的第二输出晶体管。 第一输出晶体管具有用于接收第一驱动信号的栅极和用于接收参考电位的一个电极。 第二输出晶体管具有用于接收第三驱动信号的栅极和用于接收电源电位的一个电极。
    • 19. 发明授权
    • Multi-output DC-DC converter
    • 多输出DC-DC转换器
    • US07119521B2
    • 2006-10-10
    • US10811675
    • 2004-03-29
    • Takuya IshiiHiroshi SaitoKazuhiko Nagaoka
    • Takuya IshiiHiroshi SaitoKazuhiko Nagaoka
    • G05F1/10H02M7/00H02H3/18
    • H02M3/33561
    • A multi-output DC-DC converter comprising a plurality of converters configured so that an inductor 2 and a main switch 31 are used in common, wherein a first output voltage Vo1 is output from a circuit comprising a diode 41 and a first output capacitor 51, and a second output voltage Vo2 is output from a circuit comprising an auxiliary switch 32, a diode 42 and a second output capacitor 52. The control circuit 80 of the multi-output DC-DC converter has an output detection circuit 81, an oscillation circuit 82, a PWM circuit 83, a frequency divider circuit 84 and a drive circuit 85, and controls a plurality of outputs at high efficiency and reliability.
    • 一种多输出DC-DC转换器,包括多个转换器,其被配置为使得电感器2和主开关31共同使用,其中第一输出电压Vo 1从包括二极管41和第一输出电容器 51,并且从包括辅助开关32,二极管42和第二输出电容器52的电路输出第二输出电压Vo 2。 多输出DC-DC转换器的控制电路80具有输出检测电路81,振荡电路82,PWM电路83,分频器电路84和驱动电路85,并以高效率控制多个输出 和可靠性。
    • 20. 发明授权
    • Battery-driven electronic device and mobile communication apparatus
    • 电池驱动的电子设备和移动通信设备
    • US06882130B2
    • 2005-04-19
    • US10451508
    • 2002-04-17
    • Hiroyuki HandaTakuya IshiiYasufumi NakajimaYasuhiko BitoShinji KasamatsuYoshiaki Nitta
    • Hiroyuki HandaTakuya IshiiYasufumi NakajimaYasuhiko BitoShinji KasamatsuYoshiaki Nitta
    • H02J7/00H02M3/155H02M3/158H01M10/46
    • H02J7/0065H02M3/155H02M3/1582
    • The present invention provides a battery-driven electronic device for which a long time use of the battery can be achieved and mobile communications equipment such as a portable telephone. Even if the time at which the output voltage of a battery 201 becomes below the supply voltage required by a load 206 including a power amplifier for wireless communications comes earlier than a conventional lithium ion battery because of its discharge characteristics that the battery voltage change ratio is 0.25 or more, a step-up and -down converter 200 operates as follows. When the output voltage of the battery is higher than the supply voltage required by the load, the voltage is set to a predetermined supply voltage by the step-down operation mode. When the output voltage of the battery is decreased and becomes lower than the supply voltage required by the load, the voltage is set to a predetermined supply voltage by the step-up operation mode. Thus, even for a battery employing a new material having a high energy density, a long term use of the battery can be achieved.
    • 本发明提供了一种电池驱动的电子设备,其可以实现电池的长时间使用和诸如便携式电话的移动通信设备。 即使电池201的输出电压低于包括无线通信功率放大器的负载206所需的电源电压的时间比常规的锂离子电池要早,因为其放电特性使电池电压变化率为 升压和降压转换器200如下操作。 当电池的输出电压高于负载所需的电源电压时,通过降压操作模式将电压设定为预定的电源电压。 当电池的输出电压降低并且变得低于负载所需的电源电压时,通过升压操作模式将电压设置为预定的电源电压。 因此,即使对于采用具有高能量密度的新材料的电池,也可以长期使用电池。