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    • 2. 发明申请
    • CHARGE PUMP FOR BUS-POWERED DEVICE
    • 总线供电装置的充电泵
    • WO2007008449A1
    • 2007-01-18
    • PCT/US2006/025522
    • 2006-06-29
    • ELECTRO SCIENTIFIC INDUSTRIES, INC.REYNOLDS, Thomas LeonardJOHNSON, Jay
    • REYNOLDS, Thomas LeonardJOHNSON, Jay
    • F02M3/07
    • H02M3/155H02M2001/007Y10T307/438Y10T307/625
    • A charge pump (200) can be used with a bus-powered device connected to a bus. The charge pump (200) comprises a power connection (210) from the bus carrying a DC power signal constrained to not exceed a given current limit and a given voltage limit, a DC-to-DC step-down voltage converter (300), a capacitor (C1), and a DC-to-DC step-up voltage converter (400). The step-down converter (300) has an input connected to the power connection (210) and produces an intermediate signal having a voltage the same or less than the voltage of the power signal. The capacitor (C1) is connected to the output of the step-down converter (300). The step-up converter (400) has an input connected to the output of the step-down converter (300) and to the capacitor (C1), and produces a final output signal having a voltage greater than the given voltage limit. The output of the step-up converter (400) is connected to and provides DC power to the device.
    • 电荷泵(200)可以与连接到总线的总线供电设备一起使用。 电荷泵(200)包括来自总线的电力连接(210),该总线承载被限制为不超过给定电流限制的DC电力信号和给定的电压限制,DC-DC降压电压转换器(300) 电容器(C1)和DC-DC升压电压转换器(400)。 降压转换器(300)具有连接到电力连接(210)的输入端并产生具有与电源信号的电压相同或更小的电压的中间信号。 电容器(C1)连接到降压转换器(300)的输出端。 升压转换器(400)具有连接到降压转换器(300)的输出和电容器(C1)的输入端,并且产生具有大于给定电压极限的电压的最终输出信号。 升压转换器(400)的输出与设备连接并提供直流电力。