公开(公告)号：US20160306404A1

公开(公告)日：2016-10-20

申请号：US14686360

申请日：2015-04-14

Applicant: Apple Inc.

Inventor： Jose V. SANTOS Martinez ,  Collin E. Connors ,  Yongxuan Hu

IPC: G06F1/26 ,  G06F13/38 ,  G06F13/42 ,  G06F1/32 ,  G06F13/40

CPC classification number: G06F1/266 ,  G06F1/325 ,  G06F1/3287 ,  G06F13/385 ,  G06F13/4022 ,  G06F13/4282

Abstract: A circuit for limiting an in-rush current for devices coupling to a capacitive load may include a port configured to receive a device and a first capacitor coupled to the port. Additionally, the circuit may include a first resistor coupled in series with the first capacitor and a switch coupled in parallel with the first resistor. The switch is configured to close after an in-rush current event has passed, thereby bypassing the first resistor from the circuit and enabling the first capacitor to effectively filter noise from the voltage output to the port.

Abstract translation: 用于限制耦合到电容性负载的器件的浪涌电流的电路可以包括被配置为接收器件的端口和耦合到端口的第一电容器。 另外，电路可以包括与第一电容器串联耦合的第一电阻器和与第一电阻器并联耦合的开关。 开关被配置为在浪涌电流事件已经过去之后关闭，从而绕过来自电路的第一电阻器，并且使得第一电容器能够有效地从输出到端口的电压中滤除噪声。

公开(公告)号：US20150069956A1

公开(公告)日：2015-03-12

申请号：US14481493

申请日：2014-09-09

Applicant: Apple Inc.

Inventor： Yongxuan Hu ,  Shimon Elkayam ,  Collin E. Connors ,  Liyu Yang

IPC: H02J7/00

CPC classification number: H02J7/0052 ,  H02J7/0004 ,  H02J7/0065 ,  H02J7/007 ,  H02J2007/0059 ,  H02M3/1582

Abstract: A charger circuit includes an interface connector that may be coupled to a power adapter that provides an input signal having an input voltage, and a buck-boost converter circuit that may be coupled to a battery having a charging voltage. At a given time, the buck-boost converter circuit operates in a mode in a group of modes based on a control signal, where the group of modes may include at least a buck mode and a boost mode. In particular, the charger circuit includes control logic that generates the control signal based on the charging voltage and a charging capability of the power adapter. Thus, if the charging voltage suitably exceeds the input voltage, the buck-boost converter circuit may operate in the boost mode. However, if the charging voltage is approximately less than or equal to the input voltage, the buck-boost converter circuit may operate in the buck mode.

Abstract translation: 充电器电路包括可以耦合到提供具有输入电压的输入信号的电源适配器的接口连接器，以及可以耦合到具有充电电压的电池的降压 - 升压转换器电路。 在给定时间，降压 - 升压转换器电路基于控制信号以一组模式工作，其中该组模式可以至少包括降压模式和升压模式。 特别地，充电器电路包括基于充电电压和电源适配器的充电能力产生控制信号的控制逻辑。 因此，如果充电电压适当地超过输入电压，则降压 - 升压转换器电路可以在升压模式下操作。 然而，如果充电电压大致小于或等于输入电压，则降压 - 升压转换器电路可以在降压模式下工作。