公开(公告)号：US20240385669A1

公开(公告)日：2024-11-21

申请号：US18351858

申请日：2023-07-13

Applicant: Apple Inc.

Inventor： Vijayanish Varadharajan ,  Madhavi V. Tagare ,  Mao Ye ,  Jikang Chen ,  Gregory G. Hurley ,  Yezhou Wu ,  Andrew James Lambert

IPC: G06F1/30 ,  G06F1/26 ,  G06F1/28

Abstract: An electronic device can include a plurality of subsystems; a primary power source; at least one backup energy storage; and a shutdown controller that detects unavailability of the primary power source. Upon detecting unavailability of the primary power source, the shutdown controller can cause one or more of the plurality of subsystems to reduce their power consumption; engage the at least one backup energy storage; initiate immediate power down of a first subset of the plurality of subsystems that does not result in data loss, data corruption, or physical system damage; and initiate sequenced power down of a second subset of the plurality of subsystems to prevent data loss or system damage, the second subset of the plurality of subsystems being powered by the at least one backup energy storage during the sequenced power down.

公开(公告)号：US20140103718A1

公开(公告)日：2014-04-17

申请号：US13650046

申请日：2012-10-11

Applicant: APPLE INC.

Inventor： Kisun Lee ,  Mao Ye ,  Shimon Elkayam

IPC: H01F27/255 ,  H02J4/00 ,  H01F38/02

CPC classification number: H01F27/38 ,  H01F27/255 ,  H01F38/023 ,  Y10T307/406

Abstract: The disclosed embodiments relate to a power supply for a portable electronic device. The power supply includes a power source and a nonlinear inductor. The nonlinear inductor includes a first core and a second core connected in series to the first core, wherein the second core has a higher permeability than the first core.

Abstract translation: 所公开的实施例涉及便携式电子设备的电源。 电源包括电源和非线性电感。 非线性电感器包括与第一芯串联连接的第一芯和第二芯，其中第二芯具有比第一芯更高的磁导率。

公开(公告)号：US09281116B2

公开(公告)日：2016-03-08

申请号：US13650046

申请日：2012-10-11

Applicant: Apple Inc.

Inventor： Kisun Lee ,  Mao Ye ,  Shimon Elkayam

IPC: H02J4/00 ,  H01F27/38 ,  H01F27/255 ,  H01F38/02

CPC classification number: H01F27/38 ,  H01F27/255 ,  H01F38/023 ,  Y10T307/406

Abstract: The disclosed embodiments relate to a power supply for a portable electronic device. The power supply includes a power source and a nonlinear inductor. The nonlinear inductor includes a first core and a second core connected in series to the first core, wherein the second core has a higher permeability than the first core.

Abstract translation: 所公开的实施例涉及便携式电子设备的电源。 电源包括电源和非线性电感。 非线性电感器包括与第一芯串联连接的第一芯和第二芯，其中第二芯具有比第一芯更高的磁导率。

公开(公告)号：US09484758B2

公开(公告)日：2016-11-01

申请号：US13801817

申请日：2013-03-13

Applicant: Apple Inc.

Inventor： Bin Chen ,  Mao Ye ,  Yongxuan Hu

IPC: H02M3/04 ,  H02M3/335 ,  G05F1/00 ,  H02J7/00 ,  H02M3/158 ,  G05F3/08 ,  H02M3/28 ,  H02M1/00

CPC classification number: H02J7/0052 ,  G05F3/08 ,  H02J7/0065 ,  H02M3/1582 ,  H02M3/1588 ,  H02M3/285 ,  H02M2001/0006 ,  H02M2001/0032 ,  H03K2217/0063 ,  H03K2217/0081 ,  Y02B40/90 ,  Y02B70/1466 ,  Y02B70/16 ,  Y02T90/127

Abstract: The disclosed embodiments provide a synchronous switching converter that converts a DC input voltage into a DC output voltage. This synchronous switching converter includes a high-side switching MOSFET coupled between an input node and a first node. The converter also includes a low-side switching MOSFET coupled between the first node and a ground node and is in series with the high-side switching MOSFET. This converter additionally includes a bootstrap capacitor coupled to the high-side switching MOSFET to provide turn-on voltage for the high-side switching MOSFET. Furthermore, the converter includes a main refresh circuit coupled to the bootstrap capacitor and is configured to refresh the bootstrap capacitor during a first operating mode of the synchronous switching converter. Moreover, the converter includes an auxiliary refresh circuit coupled to the main refresh circuit and the bootstrap capacitor and is configured to refresh the bootstrap capacitor during a second operating mode of the converter.

Abstract translation: 所公开的实施例提供将DC输入电压转换为DC输出电压的同步开关转换器。 该同步开关转换器包括耦合在输入节点和第一节点之间的高侧开关MOSFET。 该转换器还包括耦合在第一节点和接地节点之间并与高侧开关MOSFET串联的低侧开关MOSFET。 该转换器还包括耦合到高侧开关MOSFET的自举电容器，以为高侧开关MOSFET提供导通电压。 此外，转换器包括耦合到自举电容器的主刷新电路，并且被配置为在同步开关转换器的第一操作模式期间刷新自举电容器。 此外，转换器包括耦合到主刷新电路和自举电容器的辅助刷新电路，并且被配置为在转换器的第二操作模式期间刷新自举电容器。

公开(公告)号：US20140253051A1

公开(公告)日：2014-09-11

申请号：US13801241

申请日：2013-03-13

Applicant: APPLE INC.

Inventor： Yongxuan Hu ,  Mao Ye ,  Shimon Elkayam

IPC: H02J7/00

CPC classification number: H02J7/0077

Abstract: A system and method are described for charging a battery in a portable electronic device wherein the battery is charged using a constant-current, constant-voltage charging process. In described embodiments, a resistance is received for a current loop that includes a charger and the battery. Then, during a constant-current charging phase, a constant current is output from the charger until an output voltage of the charger reaches a target voltage. The target voltage includes a battery target voltage and a compensation voltage based on the received resistance and a charging current. When the output voltage of the charger reaches the target voltage, the charger switches from the constant-current phase to a constant-voltage phase. Then during the constant-voltage phase, the charger outputs the target voltage until the charging current drops below a minimum value at which time the charging process is complete.

Abstract translation: 描述了一种用于对便携式电子设备中的电池充电的系统和方法，其中使用恒流恒压充电过程对电池进行充电。 在所描述的实施例中，对于包括充电器和电池的电流回路接收电阻。 然后，在恒流充电阶段期间，从充电器输出恒定电流，直到充电器的输出电压达到目标电压。 目标电压包括基于所接收的电阻和充电电流的电池目标电压和补偿电压。 当充电器的输出电压达到目标电压时，充电器将从恒流阶段切换到恒定电压阶段。 然后在恒定电压阶段，充电器输出目标电压，直到充电电流下降到最小值，此时充电过程完成。

公开(公告)号：US20140217959A1

公开(公告)日：2014-08-07

申请号：US13801817

申请日：2013-03-13

Applicant: APPLE INC.

Inventor： Bin Chen ,  Mao Ye ,  Yongxuan Hu

IPC: G05F3/08 ,  H02J7/00

CPC classification number: H02J7/0052 ,  G05F3/08 ,  H02J7/0065 ,  H02M3/1582 ,  H02M3/1588 ,  H02M3/285 ,  H02M2001/0006 ,  H02M2001/0032 ,  H03K2217/0063 ,  H03K2217/0081 ,  Y02B40/90 ,  Y02B70/1466 ,  Y02B70/16 ,  Y02T90/127

Abstract: The disclosed embodiments provide a synchronous switching converter that converts a DC input voltage into a DC output voltage. This synchronous switching converter includes a high-side switching MOSFET coupled between an input node and a first node. The converter also includes a low-side switching MOSFET coupled between the first node and a ground node and is in series with the high-side switching MOSFET. This converter additionally includes a bootstrap capacitor coupled to the high-side switching MOSFET to provide turn-on voltage for the high-side switching MOSFET. Furthermore, the converter includes a main refresh circuit coupled to the bootstrap capacitor and is configured to refresh the bootstrap capacitor during a first operating mode of the synchronous switching converter. Moreover, the converter includes an auxiliary refresh circuit coupled to the main refresh circuit and the bootstrap capacitor and is configured to refresh the bootstrap capacitor during a second operating mode of the converter.

Abstract translation: 所公开的实施例提供将DC输入电压转换为DC输出电压的同步开关转换器。 该同步开关转换器包括耦合在输入节点和第一节点之间的高侧开关MOSFET。 该转换器还包括耦合在第一节点和接地节点之间并与高侧开关MOSFET串联的低侧开关MOSFET。 该转换器还包括耦合到高侧开关MOSFET的自举电容器，以为高侧开关MOSFET提供导通电压。 此外，转换器包括耦合到自举电容器的主刷新电路，并且被配置为在同步开关转换器的第一操作模式期间刷新自举电容器。 此外，转换器包括耦合到主刷新电路和自举电容器的辅助刷新电路，并且被配置为在转换器的第二操作模式期间刷新自举电容器。