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    • 3. 发明授权
    • Driver circuit for controlling a piezoelectric actuator in charge mode
    • 用于在充电模式下控制压电致动器的驱动电路
    • US06246152B1
    • 2001-06-12
    • US09441148
    • 1999-11-12
    • Luca FontanellaGiovanni FrattiniGiorgio PedrazziniGiulio Ricotti
    • Luca FontanellaGiovanni FrattiniGiorgio PedrazziniGiulio Ricotti
    • H02N214
    • H01L41/042G11B5/483H03F3/3028
    • A driver circuit for controlling a piezoelectric actuator in a charge mode includes an amplifier having a first input terminal for receiving a control voltage, a second input terminal, and a main final stage with a main output terminal connected to the piezoelectric actuator. The amplifier also includes an additional final stage with an additional output terminal connected to the second input terminal. The main final stage and the additional final stage are connected in parallel with one another so that a current which passes through the main output terminal is proportional in accordance with a predefined factor to a current which passes through the additional output terminal. The driver circuit includes a device having a constant capacitance connected to the second input terminal so that an electrical charge transferred to the piezoelectric actuator is correlated with the control voltage in accordance with the predefined factor and the capacitance.
    • 用于控制充电模式中的压电致动器的驱动器电路包括具有用于接收控制电压的第一输入端子,第二输入端子以及连接到压电致动器的主输出端子的主最终级的放大器。 放大器还包括附加的最终级,附加的输出端连接到第二输入端。 主要的最后级和额外的最后级彼此并联连接,使得通过主输出端的电流根据预定义的因子成比例,该电流通过附加的输出端。 驱动器电路包括具有连接到第二输入端子的恒定电容的装置,使得转移到压电致动器的电荷根据预定系数和电容与控制电压相关。
    • 7. 发明授权
    • Switching device
    • 开关装置
    • US06330172B1
    • 2001-12-11
    • US09505343
    • 2000-02-16
    • Luca FontanellaGiovanni FrattiniGiulio Ricotti
    • Luca FontanellaGiovanni FrattiniGiulio Ricotti
    • H02M7122
    • H02M1/38
    • A switching device having a first and a second electronic switch connected in a half-bridge configuration and each having a control terminal for receiving a switching signal alternatively having a turn-on value and a turn-off value for taking the first and second electronic switches to an on state and to an off state, respectively; the switching device includes, for each switch, means for detecting the state of the switch and means for keeping the switching signal at the turn-off value for one of the electronic switches when the detected state of the other electronic switch is the on state.
    • 一种开关装置,具有以半桥结构连接的第一和第二电子开关,每个开关装置具有用于接收开关信号的控制端子,所述控制端子交替地具有导通值和用于接收第一和第二电子开关的关断值 分别处于状态和关闭状态; 对于每个开关,当另一个电子开关的检测状态为接通状态时,开关装置包括用于检测开关状态的装置和用于将开关信号保持在电子开关中的一个的关断值的装置。
    • 10. 发明授权
    • Switching-type, inductive DC-DC converter with improved efficiency
    • 开关式,电感式DC-DC转换器,效率更高
    • US06879135B2
    • 2005-04-12
    • US10147290
    • 2002-05-15
    • Luca Fontanella
    • Luca Fontanella
    • H02M3/158G05F1/10
    • H02M3/1584
    • A DC—DC converter may comprise a plurality of voltage multiplying stages of the capacitive type, each multiplying stage comprising a plurality of selectively connectable boosting branches. In one embodiment, the DC—DC converter comprises an inductor connected between a supply line and a ground line through a switching transistor; a voltage multiplying circuit formed by a plurality of voltage multiplying stages of capacitive type, connected together in cascade and each having an input connected to an intermediate node between the inductor and the transistor, and an output supplying a potential equal to the potential of the intermediate node multiplied by a respective multiplication factor. Each voltage multiplying stage comprises a plurality of parallel, selectively connectable boosting branches. The number of the active boosting branches may be varied in response to the energy required by the loads.
    • DC-DC转换器可以包括电容型的多个电压倍增级,每个乘法级包括多个可选择性连接的升压支路。 在一个实施例中,DC-DC转换器包括通过开关晶体管连接在电源线和接地线之间的电感器; 由电容式的多个电压倍增级形成的电压倍增电路,其级联连接在一起,并且每个具有连接到电感器和晶体管之间的中间节点的输入端和提供等于中间电位电位的电位的输出端 节点乘以相应的乘法因子。 每个电压倍增级包括多个并联的,可选择地连接的升压支路。 主动升压支路的数量可以响应于负载所需的能量而变化。