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    • 7. 发明申请
    • POWER CONVERTER WITH REDUCED POWER CONSUMPTION WHEN TOGGLING BETWEEN SLEEP AND NORMAL MODES DURING DEVICE CHARGING
    • 功率转换器在设备充电期间在休眠与正常模式之间切换时降低功耗
    • WO2011068671A2
    • 2011-06-09
    • PCT/US2010/056875
    • 2010-11-16
    • APPLE INC.SIMS, Nicholas, A.TERLIZZI, Jeffrey, J.
    • SIMS, Nicholas, A.TERLIZZI, Jeffrey, J.
    • G06F1/26
    • G06F1/3203G06F1/325Y10T307/625Y10T307/74
    • Electronic devices may have batteries that power internal circuitry. A power converter may connect to an input-output port in an electronic device to deliver power to the electronic device. Battery charging circuitry in the electronic device may be used to charge the battery in an electronic device while power is delivered from the power converter. The power converter may have load detection circuitry. When an output load is present, the power converter operates in an active mode and delivers power to the electronic device. When the output load is not present, the power converter enters a low-power standby mode. The electronic device has switching circuitry that periodically either electrically couples or electrically isolates the input-output port from internal circuitry. When the input-output port is isolated, the power converter senses that no output load is present and enters the standby state to conserve power.
    • 电子设备可能具有为内部电路供电的电池。 电力转换器可以连接到电子设备中的输入 - 输出端口,以向电子设备递送电力。 电力设备中的电池充电电路可以用于在从功率转换器传送电力的同时为电子设备中的电池充电。 功率转换器可以具有负载检测电路。 当存在输出负载时,功率转换器以活动模式工作,并向电子设备供电。 当输出负载不存在时,电源转换器进入低功耗待机模式。 电子设备具有周期性地将输入 - 输出端口与内部电路电耦合或电隔离的开关电路。 当输入输出端口隔离时,电源转换器检测到不存在输出负载并进入待机状态以节省电力。
    • 8. 发明申请
    • POWER CONVERTER WITH AUTOMATIC MODE SWITCHING
    • 带自动模式开关的电源转换器
    • WO2010093402A2
    • 2010-08-19
    • PCT/US2009/068801
    • 2009-12-18
    • APPLE INC.SIMS, Nicholas, A.TERLIZZI, Jeffrey, J.
    • SIMS, Nicholas, A.TERLIZZI, Jeffrey, J.
    • H02M7/02
    • H02M7/02
    • A power converter is provided that has an alternating-current (AC) to direct-current (DC) switched- mode power converter circuit that converts alternating- current power into direct-current power for powering an attached electronic device. Power can be conserved by automatically placing the power converter circuit in a low-power standby mode of operation whenever the electronic device is detached from the power converter. A monitoring circuit can be powered by a capacitor or other energy storage element while the power converter is operating in the standby mode. If the monitoring circuit detects an output voltage change that is indicative of attachment of the electronic device or if the storage element needs to be replenished, the monitoring circuit can place the power converter circuit in an active mode of operation.
    • 提供了一种电源转换器,其具有交流(AC)到直流(DC)开关模式功率转换器电路,其将交流电力转换为用于为连接的电子设备供电的直流电力。 只要电子设备与电源转换器分离,通过自动将功率转换器电路放置在低功耗待机模式下,可以节省功率。 当电源转换器工作在待机模式时,监视电路可以由电容器或其他能量存储元件供电。 如果监视电路检测到指示电子装置的附着的输出电压变化,或者如果需要补充存储元件,则监视电路可以将功率转换器电路置于主动操作模式。