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公开(公告)号：US20220103015A1
公开(公告)日：2022-03-31
申请号：US17386542
申请日：2021-07-28
申请人： Apple Inc.
摘要： A wireless power transfer system can include a wireless power transmitter (PTx) and a wireless power receiver (PRx). The PTx can include a transmit coil driven by an inverter configured to receive an input DC voltage and provide an output AC voltage as a plurality of bursts. The PRx can include a receiver coil magnetically coupled to the transmit coil such that the bursts induce a corresponding AC voltage and a rectifier configured to receive the AC voltage and output a DC voltage to a load. The PRx can also include burst request pulse generation circuitry configured to operate the rectifier so as to deliver a burst request pulse to the PTx via magnetic coupling between coils. The PTx can further include inverter control circuitry configured to sense the burst request pulse and, in response thereto, trigger the inverter to deliver an AC voltage burst.
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公开(公告)号：US10485103B1
公开(公告)日：2019-11-19
申请号：US15439641
申请日：2017-02-22
申请人： Apple Inc.
发明人： Daniel D. Sunshine , David M. Kindlon , Michael B. Nussbaum , Andrew L. Rosenberg , Andrew Sterian , Breton M. Saunders , Christopher A. Schultz , David A. Bolt , Mark J. Beesley , Peter W. Mash , Steven Keating , Chang Liu , Lan Hoang
摘要： An item may include fabric having insulating and conductive yarns or other strands of material. The conductive strands may form signal paths. Electrical components can be mounted to the fabric. Each electrical component may have an electrical device such as a semiconductor die that is mounted on an interposer substrate. The interposer may have contacts that are soldered to the conductive strands. A protective cover may encapsulate portions of the electrical component. To create a robust connection between the electrical component and the fabric, the conductive strands may be threaded through recesses in the electrical component. The recesses may be formed in the interposer or may be formed in a protective cover on the interposer. Conductive material in the recess may be used to electrically and/or mechanically connect the conductive strand to a bond pad in the recess. Thermoplastic material may be used to seal the solder joint.
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公开(公告)号：US20190190373A1
公开(公告)日：2019-06-20
申请号：US15887593
申请日：2018-02-02
申请人： Apple Inc.
发明人： Michael B. Nussbaum
IPC分类号： H02M3/07
CPC分类号： H02M3/07
摘要： A power converter can include a charge pump that receives an input voltage and generates a flying rail voltage therefrom and a plurality of buck converters configured to generate regulated voltages from the flying rail voltage. A symmetric controller can have an outer control loop configured to regulate the flying rail voltage and a plurality of inner control loops in communication with the outer control loop and configured to control the plurality of buck converters to generate regulated output voltages responsive to one or more signals received from the outer control loop. The outer loop can be configured to include a hysteretic controller. The outer control loop can be further configured to provide a signal to the plurality of inner control loops indicating whether the inner control loops should control respective buck converters to charge or discharge a capacitor supporting the flying rail voltage.
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公开(公告)号：US11303208B2
公开(公告)日：2022-04-12
申请号：US16290769
申请日：2019-03-01
申请人： Apple Inc.
IPC分类号： G06F1/28 , H02M3/158 , G06F1/3296
摘要： A voltage regulator circuit included in a computer system may include multiple devices and a switch node coupled to a regulated power supply node via an inductor. The voltage regulator circuit may charge a capacitor using an input power supply signal, and couple the capacitor to the switch node using respective subsets of the multiple devices, which are selected based on one or more control signals. A control circuit may generate the one or more control signals based on a particular switching sequence, which is selected based on a ratio of a voltage level of the regulated power supply node and a voltage level input power supply signal.
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公开(公告)号：US11166106B2
公开(公告)日：2021-11-02
申请号：US16889630
申请日：2020-06-01
申请人： Apple Inc.
IPC分类号： H04R9/06 , H03F3/217 , H03K19/094 , H04R1/10 , H03K5/156
摘要： A hearable has an audio amplifier circuit coupled to a speaker as a load. The amplifier circuit has current source drive, which attenuates electromagnetically coupled noise of the speaker. In other instances, the amplifier circuit has a first amplifier mode and a second amplifier mode, wherein in the first amplifier mode the amplifier circuit becomes configured to drive the speaker as a voltage source, and in the second amplifier mode the amplifier circuit becomes configured to drive the speaker as a current source. Control logic varies the amplifier circuit between i) the first amplifier mode for larger amplitudes of the audio signal, and ii) the second amplifier mode for smaller amplitudes of the audio signal. Other aspects are also described and claimed.
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公开(公告)号：US20200068285A1
公开(公告)日：2020-02-27
申请号：US16114148
申请日：2018-08-27
申请人： Apple Inc.
发明人： Zhigang Dang , Michael B. Nussbaum
摘要： A case for a pair of earbuds including a housing having first and second cavities formed within the housing, the first cavity configured to receive a first earbud in the pair of earbuds and the second cavity configured to receive a second earbud in the pair of earbuds; a lid attached to the housing; a first pair of electrodes positioned within the housing adjacent to the first cavity; a second pair of electrodes positioned within the housing adjacent to the second cavity; and charging circuitry coupled to the first and second pairs of electrodes, the charging circuitry including a high frequency inverter configured to receive a DC power signal and output a high frequency AC signal to each of the first and second pairs of electrodes.
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公开(公告)号：US20180083444A1
公开(公告)日：2018-03-22
申请号：US15463558
申请日：2017-03-20
申请人： Apple Inc.
IPC分类号： H02J1/00
CPC分类号： H02J7/0065
摘要： Methods, structures, and apparatus that are able to transfer power through a device power contact while minimizing its corrosion. During a first period, a power supply may be connected to the device power contact. During a second, subsequent period the power supply may be disconnected from the device power contact and a quasi-resonant circuit connected to the device power contact may cause a voltage on the device power contact to ring. At the end of the second period, the voltage on the device power contact may be approximately equal to a voltage of the power supply. The power supply voltage may have a first polarity and the voltage on the device power contact may have a second polarity for a portion of the second period, the second polarity opposite the first polarity.
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公开(公告)号：US11445302B2
公开(公告)日：2022-09-13
申请号：US17086716
申请日：2020-11-02
申请人： Apple Inc.
摘要： Electronics devices according to embodiments of the present technology may include a first loudspeaker and a second loudspeaker disposed in a housing. The housing may define a first internal volume between a first end of the housing and a backside of the first loudspeaker. The housing may define a second internal volume between a second end of the housing and a backside of the second loudspeaker. The first loudspeaker and the second loudspeaker may be positioned within the housing so a front side of the first loudspeaker faces a front side of the second loudspeaker. A duct may be defined by the housing, which may access the first internal volume at a first end and may access the second internal volume at a second end. The electronic device may also include a processor configured to deliver signals to the first loudspeaker and the second loudspeaker.
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公开(公告)号：US11102566B2
公开(公告)日：2021-08-24
申请号：US16930033
申请日：2020-07-15
申请人： Apple Inc.
发明人： Zhigang Dang , Michael B. Nussbaum
摘要： A case for a pair of earbuds including a housing having first and second cavities formed within the housing, the first cavity configured to receive a first earbud in the pair of earbuds and the second cavity configured to receive a second earbud in the pair of earbuds; a lid attached to the housing; a first pair of electrodes positioned within the housing adjacent to the first cavity; a second pair of electrodes positioned within the housing adjacent to the second cavity; and charging circuitry coupled to the first and second pairs of electrodes, the charging circuitry including a high frequency inverter configured to receive a DC power signal and output a high frequency AC signal to each of the first and second pairs of electrodes.
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公开(公告)号：US10959331B2
公开(公告)日：2021-03-23
申请号：US16914131
申请日：2020-06-26
申请人： Apple Inc.
发明人： Daniel D. Sunshine , David M. Kindlon , Michael B. Nussbaum , Andrew L. Rosenberg , Andrew Sterian , Breton M. Saunders , Christopher A. Schultz , David A. Bolt , Mark J. Beesley , Peter W. Mash , Steven Keating , Chang Liu , Lan Hoang
IPC分类号： H05K1/00 , H05K1/03 , H05K1/18 , H05K1/11 , H01L23/31 , H01L23/498 , H05K1/02 , D03D1/00 , A41D1/00
摘要： An item may include fabric having insulating and conductive yarns or other strands of material. The conductive strands may form signal paths. Electrical components can be mounted to the fabric. Each electrical component may have an electrical device such as a semiconductor die that is mounted on an interposer substrate. The interposer may have contacts that are soldered to the conductive strands. A protective cover may encapsulate portions of the electrical component. To create a robust connection between the electrical component and the fabric, the conductive strands may be threaded through recesses in the electrical component. The recesses may be formed in the interposer or may be formed in a protective cover on the interposer. Conductive material in the recess may be used to electrically and/or mechanically connect the conductive strand to a bond pad in the recess. Thermoplastic material may be used to seal the solder joint.
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