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1. 发明授权

US5519599A Control of switching devices in synchronized-rectification system 失效
标题翻译：同步整流系统中开关装置的控制
公开(公告)号：US5519599A
公开(公告)日：1996-05-21
申请号：US385351
申请日：1995-02-08
申请人： Yosuke Shinada , Sunao Hamamura
发明人： Yosuke Shinada , Sunao Hamamura
IPC分类号： H02M3/28 , G05F1/613 , H02M3/335 , G05F1/40
CPC分类号： G05F1/613 , H02M3/33592 , Y02B70/1475
摘要： A DC-DC converter comprises a switching pulse generator for generating a plurality of switching pulse signals for operating a primary switch and a synchronized-rectifying circuit. The switching pulse generator generates the respective switching pulse signals having different pulse widths based on different control voltages which are generated by a voltage divider comprising a variable-impedance device. The pulse width of each switching pulse signal is set according to the differences between the control voltages. The switching pulse generator comprises a first control circuit for the primary switch and a second control circuit for the synchronized-rectifying circuit. Switching timing of the synchronized-rectifying circuit is deviated from that of the primary switch by a period corresponding to the difference between a certain control voltage and each of the other control voltages.
摘要翻译： DC-DC转换器包括用于产生用于操作初级开关和同步整流电路的多个开关脉冲信号的开关脉冲发生器。开关脉冲发生器基于由包括可变阻抗器件的分压器产生的不同控制电压产生具有不同脉冲宽度的各个开关脉冲信号。每个开关脉冲信号的脉冲宽度根据控制电压之间的差值来设定。开关脉冲发生器包括用于初级开关的第一控制电路和用于同步整流电路的第二控制电路。同步整流电路的开关定时与初级开关的开关定时偏离与特定控制电压和每个其它控制电压之间的差的周期。

2. 发明授权

US07564164B2 Drive circuit for piezoelectric pump and cooling system that uses this drive circuit 失效
标题翻译：使用该驱动电路的压电泵和冷却系统的驱动电路
公开(公告)号：US07564164B2
公开(公告)日：2009-07-21
申请号：US10590081
申请日：2005-02-01
申请人： Mitsuru Yamamoto , Sunao Hamamura , Yasuhiro Sasaki , Sakae Kitajo
发明人： Mitsuru Yamamoto , Sunao Hamamura , Yasuhiro Sasaki , Sakae Kitajo
IPC分类号： H01L41/09
CPC分类号： F04B45/047 , F04B17/003 , F04B43/046 , G06F1/206 , H01L23/473 , H01L41/042 , H01L2924/0002 , Y02D10/16 , H01L2924/00
摘要： A piezoelectric element of the piezoelectric pump is driven by the output signal of an amplifier that takes as input a signal that is generated by a sine wave oscillator of the same frequency that drives the piezoelectric element. The amplifier is driven by a high voltage obtained by conversion from a low-voltage power supply by a voltage-boosting converter, whereby the piezoelectric element is driven by a low-frequency sine wave of high voltage. The frequency of the sine wave oscillation is further adjusted by a signal from a first control circuit at the time of activation. In addition, the amplitude of the sine wave oscillation is adjusted by the output signal of a second control circuit that takes as input a signal from temperature sensor for sensing the temperature of the heat-generating body.
摘要翻译：压电泵的压电元件由放大器的输出信号驱动，该放大器将驱动压电元件的相同频率的正弦波振荡器产生的信号作为输入。放大器由通过由升压转换器从低压电源转换而获得的高电压驱动，由此压电元件由高电压的低频正弦波驱动。在激活时，来自第一控制电路的信号进一步调整正弦波振荡的频率。此外，正弦波振荡的振幅通过第二控制电路的输出信号进行调节，该第二控制电路将用于感测发热体温度的温度传感器的信号作为输入。

3. 发明申请

US20070242427A1 Drive Circuit for Piezoelectric Pump and Cooling System That Uses This Drive Circuit 失效
标题翻译：使用该驱动电路的压电泵和冷却系统的驱动电路
公开(公告)号：US20070242427A1
公开(公告)日：2007-10-18
申请号：US10590081
申请日：2005-02-01
申请人： Mitsuru Yamamoto , Sunao Hamamura , Yasuhiro Sasaki , Sakae Kitajo
发明人： Mitsuru Yamamoto , Sunao Hamamura , Yasuhiro Sasaki , Sakae Kitajo
IPC分类号： H05K7/20 , H02N2/00
CPC分类号： F04B45/047 , F04B17/003 , F04B43/046 , G06F1/206 , H01L23/473 , H01L41/042 , H01L2924/0002 , Y02D10/16 , H01L2924/00
摘要： A drive circuit of a piezoelectric pump that is both light and compact, that can drive a piezoelectric pump with a low level of undesired noise, and that can further realize with low power consumption a coolant device capable of reliable operation at the time of activation. A piezoelectric element of the piezoelectric pump is driven by the output signal of an amplifier that takes as input a signal that is generated by a sine wave oscillator of the same frequency that drives the piezoelectric element. The amplifier is driven by a high voltage obtained by conversion from a low-voltage power supply by a voltage-boosting converter, whereby the piezoelectric element is driven by a low-frequency sine wave of high voltage. The frequency of the sine wave oscillation is further adjusted by a signal from a first control circuit at the time of activation. In addition, the amplitude of the sine wave oscillation is adjusted by the output signal of a second control circuit that takes as input a signal from temperature sensor for sensing the temperature of the heat-generating body.
摘要翻译：压电泵的驱动电路既轻又紧凑，可以驱动具有低水平的不期望的噪声的压电泵，并且可以在低功耗的情况下进一步实现能够在激活时可靠运行的冷却剂装置。压电泵的压电元件由放大器的输出信号驱动，该放大器将驱动压电元件的相同频率的正弦波振荡器产生的信号作为输入。放大器由通过由升压转换器从低压电源转换而获得的高电压驱动，由此压电元件由高电压的低频正弦波驱动。在激活时，来自第一控制电路的信号进一步调整正弦波振荡的频率。此外，正弦波振荡的振幅通过第二控制电路的输出信号进行调节，该第二控制电路将用于感测发热体温度的温度传感器的信号作为输入。

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