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1.发明授权公开(公告)号：US11841726B2
公开(公告)日：2023-12-12
申请号：US17181950
申请日：2021-02-22
Applicant: Apple Inc.
Inventor： Seyedeh Sedigheh Hashemi , Vahid Majidzadeh Bafar , Ali Mesgarani , Mansour Keramat
IPC: G05F3/26 , G05F3/20 , G11C5/14 , G11C11/4074
CPC classification number: G05F3/26 , G05F3/205 , G11C5/147 , G11C11/4074
Abstract: A power detect circuit is disclosed. A power detect circuit includes a voltage multiplier that receives an external supply voltage and generates a second supply voltage that is greater than the former. A voltage regulator is coupled to receive the second supply voltage and outputs a regulated supply voltage. A bandgap circuit is coupled to receive the second supply voltage when a first switch is closed, and the regulated supply voltage when a second switch is closed. The bandgap circuit generates a reference voltage for the voltage regulator, as well as one or more output voltages. A comparator circuit is coupled to receive the one or more output voltages from the bandgap circuit, and may compare these one or more output voltages to the regulated supply voltage.
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2.发明申请公开(公告)号：US20210247793A1
公开(公告)日：2021-08-12
申请号：US17181950
申请日：2021-02-22
Applicant: Apple Inc.
Inventor： Seyedeh Sedigheh Hashemi , Vahid Majidzadeh Bafar , Ali Mesgarani , Mansour Keramat
IPC: G05F3/26 , G05F3/20 , G11C11/4074 , G11C5/14
Abstract: A power detect circuit is disclosed. A power detect circuit includes a voltage multiplier that receives an external supply voltage and generates a second supply voltage that is greater than the former. A voltage regulator is coupled to receive the second supply voltage and outputs a regulated supply voltage. A bandgap circuit is coupled to receive the second supply voltage when a first switch is closed, and the regulated supply voltage when a second switch is closed. The bandgap circuit generates a reference voltage for the voltage regulator, as well as one or more output voltages. A comparator circuit is coupled to receive the one or more output voltages from the bandgap circuit, and may compare these one or more output voltages to the regulated supply voltage.
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公开(公告)号：US10931243B2
公开(公告)日：2021-02-23
申请号：US16281927
申请日：2019-02-21
Applicant: Apple Inc.
Inventor： Vahid Majidzadeh Bafar , Mansour Keramat , Tao Wang
Abstract: A signal coupling method and apparatus is disclosed. A coupling network is coupled to convey signals from first functional circuit block to a second functional circuit block. The coupling network includes a first signal path having a first capacitor for providing AC coupling between the first and second functional circuit blocks. The coupling network further includes a second signal path in parallel with the first signal path. The second signal path includes a switched capacitor circuit coupled to receive a first common mode voltage corresponding to the first functional circuit block and a second common mode voltage corresponding to the second functional circuit block.
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公开(公告)号：US20200274501A1
公开(公告)日：2020-08-27
申请号：US16281927
申请日：2019-02-21
Applicant: Apple Inc.
Inventor： Vahid Majidzadeh Bafar , Mansour Keramat , Tao Wang
Abstract: A signal coupling method and apparatus is disclosed. A coupling network is coupled to convey signals from first functional circuit block to a second functional circuit block. The coupling network includes a first signal path having a first capacitor for providing AC coupling between the first and second functional circuit blocks. The coupling network further includes a second functional circuit block having a second signal path in parallel with the first signal path. The second signal path includes a switched capacitor circuit coupled to receive a first common mode voltage corresponding to the first functional circuit block and a second common mode voltage corresponding to the second functional circuit block.
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5.发明授权公开(公告)号：US12079022B2
公开(公告)日：2024-09-03
申请号：US18493796
申请日：2023-10-24
Applicant: Apple Inc.
Inventor： Seyedeh Sedigheh Hashemi , Vahid Majidzadeh Bafar , Ali Mesgarani , Mansour Keramat
IPC: G05F3/26 , G05F3/20 , G11C5/14 , G11C11/4074
CPC classification number: G05F3/26 , G05F3/205 , G11C5/147 , G11C11/4074
Abstract: A power detect circuit is disclosed. A power detect circuit includes a voltage multiplier that receives an external supply voltage and generates a second supply voltage that is greater than the former. A voltage regulator is coupled to receive the second supply voltage and outputs a regulated supply voltage. A bandgap circuit is coupled to receive the second supply voltage when a first switch is closed, and the regulated supply voltage when a second switch is closed. The bandgap circuit generates a reference voltage for the voltage regulator, as well as one or more output voltages. A comparator circuit is coupled to receive the one or more output voltages from the bandgap circuit, and may compare these one or more output voltages to the regulated supply voltage.
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Patent Agency Ranking
公开(公告)号：US09966907B1
公开(公告)日：2018-05-08
申请号：US15426111
申请日：2017-02-07
Applicant: Apple Inc.
Inventor： Vahid Majidzadeh Bafar , Ashkan Borna , Mansour Keramat
CPC classification number: H03F1/52 , H03F1/34 , H03F3/45475 , H03F2200/258 , H03F2200/411 , H03F2200/66
Abstract: A method and apparatus for high-speed clipping and recovery in an amplifier circuit is disclosed. In one embodiment, a circuit includes an amplifier configured to amplify an incoming signal. The amplifier includes inverting and non-inverting inputs, and is configured to provide a differential output. An output limiting circuit is coupled across the differential output, and is configured to limit an amplitude of an output signal provided on the differential output responsive to an input signal exceeding a first amplitude threshold. An input limiting circuit is coupled between the inverting input and the non-inverting input of the amplifier. Responsive to the input signal exceeding a second amplitude threshold (greater than the first), the input limiting circuit is configured to limit the amplitude of the output signal.
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公开(公告)号：US12013713B2
公开(公告)日：2024-06-18
申请号：US17033528
申请日：2020-09-25
Applicant: Apple Inc.
Inventor： Ali Mesgarani , Ke Yun , Seyedeh Sedigheh Hashemi , Jasdeep S. Dhaliwal , Mansour Keramat , Jafar Savoj , Bruno W. Garlepp , Vahid Majidzadeh Bafar , Emerson S. Fang
Abstract: The present disclosure is directed to a system implementing a sensor. A sensing system is implemented in a functional circuit block that is coupled to a global supply voltage node. The sensing system includes a power converter circuit configured to generate a regulated voltage level on a local supply node using the voltage present on the global supply voltage node. The system also includes a sensor circuit coupled to receive the regulated voltage node, wherein the sensor is configured to compare corresponding parameters of different ones of a number of subset of device at a plurality of different time points and generate a plurality of comparison results. The comparisons generate an analog signal that is proportional to the operating parameter. An analog-to-digital converter (ADC) is coupled to receive the analog signal and generate a plurality of bits corresponding thereto.
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8.发明公开公开(公告)号：US20240168508A1
公开(公告)日：2024-05-23
申请号：US18493796
申请日：2023-10-24
Applicant: Apple Inc.
Inventor： Seyedeh Sedigheh Hashemi , Vahid Majidzadeh Bafar , Ali Mesgarani , Mansour Keramat
IPC: G05F3/26 , G05F3/20 , G11C5/14 , G11C11/4074
CPC classification number: G05F3/26 , G05F3/205 , G11C5/147 , G11C11/4074
Abstract: A power detect circuit is disclosed. A power detect circuit includes a voltage multiplier that receives an external supply voltage and generates a second supply voltage that is greater than the former. A voltage regulator is coupled to receive the second supply voltage and outputs a regulated supply voltage. A bandgap circuit is coupled to receive the second supply voltage when a first switch is closed, and the regulated supply voltage when a second switch is closed. The bandgap circuit generates a reference voltage for the voltage regulator, as well as one or more output voltages. A comparator circuit is coupled to receive the one or more output voltages from the bandgap circuit, and may compare these one or more output voltages to the regulated supply voltage.
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公开(公告)号：US20220100220A1
公开(公告)日：2022-03-31
申请号：US17033528
申请日：2020-09-25
Applicant: Apple Inc.
Inventor： Ali Mesgarani , Ke Yun , Seyedeh Sedigheh Hashemi , Jasdeep S. Dhaliwal , Mansour Keramat , Jafar Savoj , Bruno W. Garlepp , Vahid Majidzadeh Bafar , Emerson S. Fang
Abstract: The present disclosure is directed to a system implementing a sensor. A sensing system is implemented in a functional circuit block that is coupled to a global supply voltage node. The sensing system includes a power converter circuit configured to generate a regulated voltage level on a local supply node using the voltage present on the global supply voltage node. The system also includes a sensor circuit coupled to receive the regulated voltage node, wherein the sensor is configured to compare corresponding parameters of different ones of a number of subset of device at a plurality of different time points and generate a plurality of comparison results. The comparisons generate an analog signal that is proportional to the operating parameter. An analog-to-digital converter (ADC) is coupled to receive the analog signal and generate a plurality of bits corresponding thereto.
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10.发明授权公开(公告)号：US10928846B2
公开(公告)日：2021-02-23
申请号：US16288253
申请日：2019-02-28
Applicant: Apple Inc.
Inventor： Seyedeh Sedigheh Hashemi , Vahid Majidzadeh Bafar , Ali Mesgarani , Mansour Keramat
IPC: G05F3/26 , G05F3/20 , G11C5/14 , G11C11/4074
Abstract: A power detect circuit is disclosed. A power detect circuit includes a voltage multiplier that receives an external supply voltage and generates a second supply voltage that is greater than the former. A voltage regulator is coupled to receive the second supply voltage and outputs a regulated supply voltage. A bandgap circuit is coupled to receive the second supply voltage when a first switch is closed, and the regulated supply voltage when a second switch is closed. The bandgap circuit generates a reference voltage for the voltage regulator, as well as one or more output voltages. A comparator circuit is coupled to receive the one or more output voltages from the bandgap circuit, and may compare these one or more output voltages to the regulated supply voltage.
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