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公开(公告)号：US20190341796A1
公开(公告)日：2019-11-07
申请号：US16125611
申请日：2018-09-07
Applicant: Apple Inc.
Inventor： Bin Gu , Yongxuan Hu , Stephen C. Terry , Di Zhao , Ruchi J. Parikh , Michael D. Black , Weiyun Chen
Abstract: An electronic device may receive or provide power using bidirectional wired and wireless power converters. A bypass path may be included to bypass the battery charger and to allow direct power transfers from a connector of the electronic device to the wireless power converter or from the wireless power converter to the connector of the electronic device. Current limiting and regulation circuitry may also be included.
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公开(公告)号：US20190173276A1
公开(公告)日：2019-06-06
申请号：US16259983
申请日：2019-01-28
Applicant: Apple Inc.
Inventor： Roderick D. Bacon , Nagendra Bage Jayaraj , Derek J. DiCarlo , Chi Kin Ho , Xingqun Li , Jahan C. Minoo , Surya Musunuri , Tony Chi Wang Ng , Carlos Ribas , Ching Yu John Tam , Evan J. Thompson , Daniel C. Wagman , Di Zhao , Robert D. Zupke
Abstract: A voltage of a first pin that is one of several pins of an external connector of a system is measured, while the first pin is un-driven except for being pulled to ground through a first resistance, and a second pin of the external connector is being used as a power supply rail of the system. The measured voltage is compared to a short circuit threshold and in response to that threshold being exceeded, the power supply voltage on the second pin is reduced. In such an embodiment, no test stimulus needs to be applied to any of the pins of the external connector. Other embodiments are also described and claimed.
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公开(公告)号：US20170358922A1
公开(公告)日：2017-12-14
申请号：US15256409
申请日：2016-09-02
Applicant: Apple Inc.
Inventor： Roderick D. Bacon , Nagendra Bage Jayaraj , Derek J. DiCarlo , Chi Kin Ho , Xingqun Li , Jahan C. Minoo , Surya Musunuri , Tony Chi Wang Ng , Carlos Ribas , Ching Yu John Tam , Evan J. Thompson , Daniel C. Wagman , Di Zhao , Robert D. Zupke
IPC: H02H9/04 , H01R24/60 , H01R13/66 , H01R13/713 , H01R107/00
CPC classification number: H02H9/04 , G06F13/4068 , H01R13/6683 , H01R13/713 , H01R24/60 , H01R2107/00 , H04L12/40045 , Y02D10/14 , Y02D10/151
Abstract: A voltage of a first pin that is one of several pins of an external connector of a system is measured, while the first pin is un-driven except for being pulled to ground through a first resistance, and a second pin of the external connector is being used as a power supply rail of the system. The measured voltage is compared to a short circuit threshold and in response to that threshold being exceeded, the power supply voltage on the second pin is reduced. In such an embodiment, no test stimulus needs to be applied to any of the pins of the external connector. Other embodiments are also described and claimed.
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公开(公告)号：US11362579B2
公开(公告)日：2022-06-14
申请号：US16684312
申请日：2019-11-14
Applicant: Apple Inc.
Inventor： Stephen Hrinya , Di Zhao
Abstract: A switching power converter circuit may include output voltage overshoot mitigation circuitry that can modify operation of the converter responsive to an overvoltage condition by switching from a pulse width modulation (PWM) mode to a pulse frequency modulation (PFM) mode. A clamp may be provided to clamp a control voltage or a compensating capacitor voltage of the main output voltage control loop (e.g., a PWM control loop) to a control voltage of the PFM loop. An output pull down circuit may be provided to temporarily apply a load to the converter output.
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公开(公告)号：US12191685B2
公开(公告)日：2025-01-07
申请号：US17447488
申请日：2021-09-13
Applicant: Apple Inc.
Inventor： Weiyun Chen , Di Zhao
Abstract: A battery powered electronic device can include a wireless power system configured to receive power from a wireless power transmitter, a converter coupled to the wireless power system that converts a voltage from the wireless power system to a battery charging voltage, a battery comprising at least two cells, a power management unit that delivers power from one or more of the at least two cells to one or more subsystems of the electronic device, and a plurality of switching devices connecting the at least two cells, the converter, and the power management unit. The plurality of switching devices can be arranged so that a first switching configuration connects the cells in series for charging from the converter and a second switching configuration connects the cells in parallel for delivering power to the power management unit.
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Patent Agency Ranking
公开(公告)号：US20210099073A1
公开(公告)日：2021-04-01
申请号：US16684312
申请日：2019-11-14
Applicant: Apple Inc.
Inventor： Stephen Hrinya , Di Zhao
Abstract: A switching power converter circuit may include output voltage overshoot mitigation circuitry that can modify operation of the converter responsive to an overvoltage condition by switching from a pulse width modulation (PWM) mode to a pulse frequency modulation (PFM) mode. A clamp may be provided to clamp a control voltage or a compensating capacitor voltage of the main output voltage control loop (e.g., a PWM control loop) to a control voltage of the PFM loop. An output pull down circuit may be provided to temporarily apply a load to the converter output.
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公开(公告)号：US10236683B2
公开(公告)日：2019-03-19
申请号：US15256409
申请日：2016-09-02
Applicant: Apple Inc.
Inventor： Roderick D. Bacon , Nagendra Bage Jayaraj , Derek J. DiCarlo , Chi Kin Ho , Xingqun Li , Jahan C. Minoo , Surya Musunuri , Tony Chi Wang Ng , Carlos Ribas , Ching Yu John Tam , Evan J. Thompson , Daniel C. Wagman , Di Zhao , Robert D. Zupke
IPC: H02H9/04 , H01R13/66 , H01R13/713 , H01R24/60 , G06F13/40 , H04L12/40 , H01R107/00
Abstract: A voltage of a first pin that is one of several pins of an external connector of a system is measured, while the first pin is un-driven except for being pulled to ground through a first resistance, and a second pin of the external connector is being used as a power supply rail of the system. The measured voltage is compared to a short circuit threshold and in response to that threshold being exceeded, the power supply voltage on the second pin is reduced. In such an embodiment, no test stimulus needs to be applied to any of the pins of the external connector. Other embodiments are also described and claimed.
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公开(公告)号：US20180091051A1
公开(公告)日：2018-03-29
申请号：US15441731
申请日：2017-02-24
Applicant: Apple Inc.
Inventor： Jamie L. Langlinais , Di Zhao
CPC classification number: H02M3/158 , H02M2001/0009
Abstract: A method for dc-dc power conversion using a switching phase. While a high side switch of the phase is closed, detecting that a high side current of the phase has risen to a set peak limit, and in response opening the high side switch. While the high side switch is open, preventing the high side switch from closing so long as a valley limit reached condition has not been detected, wherein the valley limit reached condition is detected when a low side current of the phase has dropped to a set valley limit. Other embodiments are also described and claimed.
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公开(公告)号：US12142953B2
公开(公告)日：2024-11-12
申请号：US17650322
申请日：2022-02-08
Applicant: Apple Inc.
Inventor： Baifeng Chen , Xingqun Li , Di Zhao , Chao Ma
IPC: H02J7/00
Abstract: A multi-cell battery powered device can include at least one power input, a first power converter coupled between the power input and a battery bus, a second power converter coupled between the battery bus and a system load of the electronic device, a plurality of cells, and a plurality of primary battery protection switches. The primary battery protection switches can be selectively operable to couple the plurality of cells in: (1) a parallel configuration in which the cells are coupled to the battery bus so as to charge or discharge in parallel, (2) a series configuration in which the cells are coupled to the battery bus so as to charge or discharge in series, and (3) an isolated configuration in which at least one of the plurality of cells is coupled to the battery bus and at least one of the plurality of cells is disconnected from the battery bus.
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公开(公告)号：US20230396097A1
公开(公告)日：2023-12-07
申请号：US18196911
申请日：2023-05-12
Applicant: APPLE INC.
Inventor： Christopher R. Costello , Alexandre R. Moha , Cheng Ran Zhang , Chensong He , John T. Perry , Kejia Zhang , Ankan De , Di Zhao , Garren T. Lowrance , Jizhen Fu , Aram S. Almuhana , Marc Guinez , Samuel B. Schaevitz
CPC classification number: H02J50/10 , H02J7/0044 , H02J50/80 , H02J7/00712 , H02J7/007192 , H02J50/402 , H02J50/005 , H04B5/0037
Abstract: A wireless power transmitting device includes a surface adapted to support a container containing a wireless power receiving device and further includes a wireless power transfer coil positioned to couple with a wireless power receiving coil of the wireless power receiving device when the container is placed on the surface. The wireless power transmitting device detects a presence of the wireless power receiving device when the container containing the wireless power receiving device is placed on the surface and determines whether the wireless power receiving device permits wireless power transfer while it is inside the container. Using the wireless power transfer coil, the wireless power transmitting device wirelessly transmits power to the wireless power receiving device through the container to charge a battery of the wireless power receiving device, in accordance with determining the wireless power receiving device permits wireless power transfer while it is inside the container.
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