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公开(公告)号：US20190074764A1
公开(公告)日：2019-03-07
申请号：US16121205
申请日：2018-09-04
Applicant: Apple Inc.
Inventor： Yongxuan Hu , Weiyun Chen , Stephen C. Terry , Chi Kin Ho , Norah E. Nakibuuka
Abstract: This disclosure describes a system and a method to limit (i.e., regulate) the input power of a power converter as a function of the voltage and/or loading condition of a power-limited source such as a battery. In some embodiments, the power converter may comprise a transconductance amplifier that may produce a sink current to a current mirror, which in turn that may provide an adjusted current limit threshold to the power converter. The power converter may utilize the current limit threshold to perform cycle-by-cycle current limiting, thus regulating the input power drawn from the battery.
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公开(公告)号：US11095119B2
公开(公告)日：2021-08-17
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
IPC: H02H9/04 , G06F13/40 , H04L12/40 , H01R13/66 , H01R13/713 , H01R24/60 , 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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Patent Agency Ranking
公开(公告)号：US10938307B2
公开(公告)日：2021-03-02
申请号：US16121205
申请日：2018-09-04
Applicant: Apple Inc.
Inventor： Yongxuan Hu , Weiyun Chen , Stephen C. Terry , Chi Kin Ho , Norah E. Nakibuuka
Abstract: This disclosure describes a system and a method to limit (i.e., regulate) the input power of a power converter as a function of the voltage and/or loading condition of a power-limited source such as a battery. In some embodiments, the power converter may comprise a transconductance amplifier that may produce a sink current to a current mirror, which in turn that may provide an adjusted current limit threshold to the power converter. The power converter may utilize the current limit threshold to perform cycle-by-cycle current limiting, thus regulating the input power drawn from the battery.
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公开(公告)号：US12223110B1
公开(公告)日：2025-02-11
申请号：US17901470
申请日：2022-09-01
Applicant: Apple Inc.
Inventor： Denis G. Chen , Matthew T. Metzler , Eric M. Innis , Darya Amin-Shahidi , Shingo Yoneoka , Chi Kin Ho , Adriane S. Niehaus , Matthew N. Weege , Michael S. Weinstein , Tristan R. Hudson , Parin Patel , Jonathan A. Gordon
Abstract: A software defined button includes a force sensor and a haptic output element. The button further includes an immutable logic core and a mutable logic core. The mutable logic core is configured to define one or more thresholds against which input received from the force sensor can be compared to determine whether a user input has been provided. The immutable logic core is configured to verify actual force input has been received when the mutable logic core signals that user input has been received. In response to receiving a verified force input, the haptic output element can be caused to be driven by one of the mutable or immutable logic cores to provide a haptic output to a user.
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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：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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