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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：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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Patent Agency Ranking
公开(公告)号：US10962388B2
公开(公告)日：2021-03-30
申请号：US16123808
申请日：2018-09-06
Applicant: Apple Inc.
Inventor： Parin Patel , Stephen Hrinya
Abstract: An electronic device may include a conductor sensing assembly for sensing movement of a conductor, for example, in order to provide an input assembly that may be operative to detect a user's manipulation of a distance between the conductor and a portion of the conductor sensing assembly for controlling a functionality of the device. The conductor sensing assembly may include an oscillator that may produce oscillations that decay at different rates dependent upon a variable distance between a component of the conductor sensing assembly and a conductor of the input assembly. As the decay rate may be dependent on or otherwise correlate with the magnitude of a distance between the oscillator and a conductor, detection of the decay rate of the oscillator may enable determination of a state of a button input assembly that includes a conductor operative to be movable by a user with respect to the oscillator.
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公开(公告)号：US20190101417A1
公开(公告)日：2019-04-04
申请号：US16123808
申请日：2018-09-06
Applicant: Apple Inc.
Inventor： Parin Patel , Stephen Hrinya
IPC: G01D5/245
Abstract: An electronic device may include a conductor sensing assembly for sensing movement of a conductor, for example, in order to provide an input assembly that may be operative to detect a user's manipulation of a distance between the conductor and a portion of the conductor sensing assembly for controlling a functionality of the device. The conductor sensing assembly may include an oscillator that may produce oscillations that decay at different rates dependent upon a variable distance between a component of the conductor sensing assembly and a conductor of the input assembly. As the decay rate may be dependent on or otherwise correlate with the magnitude of a distance between the oscillator and a conductor, detection of the decay rate of the oscillator may enable determination of a state of a button input assembly that includes a conductor operative to be movable by a user with respect to the oscillator.
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公开(公告)号：US20210099075A1
公开(公告)日：2021-04-01
申请号：US16684277
申请日：2019-11-14
Applicant: Apple Inc.
Inventor： Stephen Hrinya
Abstract: A switching power converter may have a plurality of control loops, each control loop being configured to regulate a voltage or current of the converter. The multi-loop converter may be provided with a loop handoff transient mitigation circuit. The loop handoff transient mitigation circuit may be configured to modify the operating point of an inactive control loop to aid the transition from an active control loop to the inactive control loop. The loop handoff transient mitigation circuit may operate by clamping a voltage of the inactive loop to a voltage corresponding to a control voltage of the active control loop. The clamped voltage may be a control voltage of the inactive loop and/or may be a compensating capacitor voltage of the inactive control loop.
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公开(公告)号：US10122217B2
公开(公告)日：2018-11-06
申请号：US15152444
申请日：2016-05-11
Applicant: Apple Inc.
Inventor： Stephen Hrinya , Parin Patel
Abstract: Systems and methods for in-band communication across a wireless power interface from a load device to a source device. The load device selectively modifies the timing of switches within a voltage rectifier coupled to an output of a receive coil within the load device that receives power from a transmit coil within the source device. The source device detects changes in the power transfer (or in the relative timing of a voltage or a current) as digital information received from the load device.
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公开(公告)号：US20170093218A1
公开(公告)日：2017-03-30
申请号：US15152444
申请日：2016-05-11
Applicant: Apple Inc.
Inventor： Stephen Hrinya , Parin Patel
CPC classification number: H02J50/12 , H02J7/025 , H02J50/80 , H04B5/0031 , H04B5/0037 , H04B5/0075
Abstract: Systems and methods for in-band communication across a wireless power interface from a load device to a source device. The load device selectively modifies the timing of switches within a voltage rectifier coupled to an output of a receive coil within the load device that receives power from a transmit coil within the source device. The source device detects changes in the power transfer (or in the relative timing of a voltage or a current) as digital information received from the load device.
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