公开(公告)号：WO2015188195A2

公开(公告)日：2015-12-10

申请号：PCT/US2015/034745

申请日：2015-06-08

Applicant: APPLE INC.

Inventor： LUH, Louis ,  ATHAS, William C. ,  SULLENS, Heather R.

IPC: H02J3/00

CPC classification number: H02J1/14 ,  G06F1/26 ,  G06F11/3058 ,  H02J3/00 ,  H02J7/0063 ,  H02J7/0065 ,  H02J2007/0067 ,  Y10T307/406

Abstract: The disclosed embodiments provide a system that operates a power supply. During operation, the system disposes a first switching mechanism between a first output of a first power converter and two or more loads. Next, the system obtains two or more error signals for the two or more loads, wherein each error signal from the two or more error signals represents a difference between a load voltage of a load from the two or more loads and a first reference voltage for the load from a first set of reference voltages for driving the two or more loads using the first power converter. The system then uses the first switching mechanism to couple the load with a largest error signal from the two or more error signals to the first output. The disclosed embodiments also provide a system that operates a power supply. During operation, the system obtains power states of two or more loads coupled to two or more power converters in the power supply. Next, the system generates one or more control signals for a set of switching mechanisms to configure a coupling of the two or more loads to the two or more power converters through the switching mechanisms based on the power states.

Abstract translation: 所公开的实施例提供了操作电源的系统。 在操作期间，系统在第一功率转换器的第一输出和两个或更多个负载之间配置第一切换机构。 接下来，系统获得用于两个或更多个负载的两个或更多个误差信号，其中来自两个或更多个误差信号的每个误差信号表示来自两个或更多个负载的负载的负载电压与第一参考电压之间的差， 来自用于使用第一功率转换器驱动两个或更多个负载的第一组参考电压的负载。 然后，系统使用第一切换机构将负载与来自两个或更多个误差信号的最大误差信号耦合到第一输出。 所公开的实施例还提供了操作电源的系统。 在操作期间，系统获得耦合到电源中的两个或更多个功率转换器的两个或更多个负载的功率状态。 接下来，系统为一组切换机构生成一个或多个控制信号，以通过基于功率状态的切换机构来配置两个或更多个负载与两个或更多个功率转换器的耦合。

公开(公告)号：WO2013085579A3

公开(公告)日：2013-06-13

申请号：PCT/US2012/052464

申请日：2012-08-27

Applicant: APPLE INC. ,  CHOU, Catherine S. ,  ATHAS, William C. ,  SULLENS, Heather R.

Inventor： CHOU, Catherine S. ,  ATHAS, William C. ,  SULLENS, Heather R.

IPC: H03L3/00 ,  H03B5/06

Abstract: The disclosed embodiments provide a system which starts up and shuts down a resonant oscillator circuit. During the start up process, a driving circuit uses a first clock signal to control a first phase output of the resonant oscillator circuit. At the same time, the driving circuit uses a second clock signal to control a second phase output of the resonant oscillator circuit, wherein the first and second clock signals have opposite phases. While the first and second phase outputs are being controlled, the system ramps up an input voltage, which is used to power the resonant oscillator circuit, wherein the ramping takes place across multiple initial oscillation periods. During the shut down process, the system shuts down the resonant oscillator circuit by ramping down the input voltage. After the input voltage has been ramped down, the system clamps the first and second phase outputs to a fixed voltage.