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公开(公告)号：US10128755B2
公开(公告)日：2018-11-13
申请号：US15627082
申请日：2017-06-19
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Parin Patel , Damon Lee , Evaldo Miranda, Jr. , Mark A. Yoshimoto , Jamie L. Langlinais , Jonathan M. Audy
Abstract: A multi-phase switch mode, voltage regulator has a transient mode portion in which a phase control output is coupled to one or more control inputs of one or more switch circuits that conduct inductor current through one or more transient phase inductors, from amongst a number of phase inductors. A slew mode control circuit detects a high slope and then a low slope in the feedback voltage and, in between detection of the high slope and the low slope, pulses the phase control output of the transient mode portion so that the switch circuit that conducts transient phase inductor current adds power to, or sinks power from, the power supply output. Other embodiments are also described.
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公开(公告)号：US20160320788A1
公开(公告)日：2016-11-03
申请号：US15143321
申请日：2016-04-29
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Yehonatan Perez , Stephen J. Hrinya , Eugene L. Shoykhet
Abstract: A host electronic device may be coupled to an accessory electronic device. During normal operation, the host device may supply the accessory device with power over a power supply line. Back-powering events in which the accessory device delivers power to the host device may be prevented by interposing a protection transistor in the power supply line. A current mirror may be formed using the protection transistor and an additional transistor that produces a sense current proportional to the amount of current that is flowing through the power supply line. A current-to-voltage amplifier may produce a sense voltage that is proportional to the sense current. A bias circuit may be used to bias the sense current through the current mirror. A control circuit may compare the sense voltage to one or more reference voltages and turn off the protection transistor when appropriate to prevent back-powering of the host device.
Abstract translation: 主机电子设备可以耦合到辅助电子设备。 在正常操作期间，主机设备可以通过电源线向附件设备供电。 可以通过在电源线中插入保护晶体管来防止附件设备向主机设备传送电力的反向供电事件。 可以使用保护晶体管和产生与流过电源线的电流量成比例的感测电流的附加晶体管来形成电流镜。 电流 - 电压放大器可以产生与感测电流成正比的感测电压。 可以使用偏置电路来将感测电流偏置通过电流镜。 控制电路可以将感测电压与一个或多个参考电压进行比较，并且在适当时关闭保护晶体管以防止主机设备的反向供电。
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公开(公告)号：US10581330B2
公开(公告)日：2020-03-03
申请号：US16002551
申请日：2018-06-07
Applicant: Apple Inc.
Inventor： Damon Lee , Jamie L. Langlinais , Jonathan M. Audy , Mark A. Yoshimoto , Rajarshi Paul , Talbott M. Houk
Abstract: A power conversion circuit providing a regulated output voltage to a load can include a switching regulator with an input configured to be coupled to an input voltage source and an output configured to be coupled to the load. The power conversion circuit can further include a metered charge transfer converter, such as a charge pump or a switched or pulsed current source, having an input configured to be coupled to an input voltage source and having an output configured to be coupled to the load. A controller coupled to the metered charge transfer converter can be configured to operate the metered charge transfer converter to deliver energy to the load responsive to a dip of the regulated output voltage below a threshold caused by an increase in current drawn by the load. The metered charge transfer converter may be located closer to the load than the switching regulator.
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公开(公告)号：US20190280590A1
公开(公告)日：2019-09-12
申请号：US16002551
申请日：2018-06-07
Applicant: Apple Inc.
Inventor： Damon Lee , Jamie L. Langlinais , Jonathan M. Audy , Mark A. Yoshimoto , Rajarshi Paul , Talbott M. Houk
Abstract: A power conversion circuit providing a regulated output voltage to a load can include a switching regulator with an input configured to be coupled to an input voltage source and an output configured to be coupled to the load. The power conversion circuit can further include a metered charge transfer converter, such as a charge pump or a switched or pulsed current source, having an input configured to be coupled to an input voltage source and having an output configured to be coupled to the load. A controller coupled to the metered charge transfer converter can be configured to operate the metered charge transfer converter to deliver energy to the load responsive to a dip of the regulated output voltage below a threshold caused by an increase in current drawn by the load. The metered charge transfer converter may be located closer to the load than the switching regulator.
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公开(公告)号：US20250112550A1
公开(公告)日：2025-04-03
申请号：US18477726
申请日：2023-09-29
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Parin Patel , Daniel P Kumar , Jason M Rau
IPC: H02M3/155
Abstract: A power system for powering a pulsed load that intermittently delivers current pulses can include: an energy reservoir; a first DC-DC converter having an input that receives an input voltage and an output coupled to the energy reservoir; a second DC-DC converter having an input coupled to the energy reservoir and an output couplable to the pulsed load; and control circuitry that operates the first DC-DC converter to charge the energy reservoir from a minimum or valley voltage to a maximum or peak voltage during a charging window just prior to a current pulse of the pulsed load so that the first DC-DC converter is at or near its maximum output current at a beginning of the current pulse of the pulsed load.
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Patent Agency Ranking
公开(公告)号：US11164694B2
公开(公告)日：2021-11-02
申请号：US16586606
申请日：2019-09-27
Applicant: Apple Inc.
Inventor： Daniel P. Kumar , Frank Y. Yuan , Xinbo He , Rajarshi Paul , Meng Chi Lee
Abstract: Inductors that generate a reduced spurious electric-field. One example can provide an inductor where the terminals of the inductor are located at positions that reduce the spurious electric field by determining the types of signals conveyed at the terminals of the inductor and then selecting locations for the terminals based on that determination. For example, where a dynamic differential signal is applied to the inductor, the terminals of the inductor can be positioned near a physical center of the inductor.
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公开(公告)号：US20210098187A1
公开(公告)日：2021-04-01
申请号：US16586606
申请日：2019-09-27
Applicant: Apple Inc.
Inventor： Daniel P. Kumar , Frank Y. Yuan , Xinbo He , Rajarshi Paul , Meng Chi Lee
Abstract: Inductors that generate a reduced spurious electric-field. One example can provide an inductor where the terminals of the inductor are located at positions that reduce the spurious electric field by determining the types of signals conveyed at the terminals of the inductor and then selecting locations for the terminals based on that determination. For example, where a dynamic differential signal is applied to the inductor, the terminals of the inductor can be positioned near a physical center of the inductor.
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公开(公告)号：US10333528B1
公开(公告)日：2019-06-25
申请号：US16125624
申请日：2018-09-07
Applicant: Apple Inc.
Inventor： Parin Patel , Jamie L. Langlinais , Mark A. Yoshimoto , Rajarshi Paul
Abstract: Power supply topologies can leverage relatively smaller component sizes while meeting the power requirements of loads. In a first stage, a determination is made as to whether a high current limit is exceeded for a first duration, or whether an average current provided exceeds an average current limit, such that a power supply component (e.g., inductor) is thermally stressed. In either event, a clock frequency is reduced by a first factor. In a second stage, a determination is made as to whether an output voltage drops below a voltage threshold. If so, the clock frequency may be further reduced by a second factor.
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公开(公告)号：US10048715B2
公开(公告)日：2018-08-14
申请号：US15143321
申请日：2016-04-29
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Yehonatan Perez , Stephen J. Hrinya , Eugene L. Shoykhet
Abstract: A host electronic device may be coupled to an accessory electronic device. During normal operation, the host device may supply the accessory device with power over a power supply line. Back-powering events in which the accessory device delivers power to the host device may be prevented by interposing a protection transistor in the power supply line. A current mirror may be formed using the protection transistor and an additional transistor that produces a sense current proportional to the amount of current that is flowing through the power supply line. A current-to-voltage amplifier may produce a sense voltage that is proportional to the sense current. A bias circuit may be used to bias the sense current through the current mirror. A control circuit may compare the sense voltage to one or more reference voltages and turn off the protection transistor when appropriate to prevent back-powering of the host device.
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公开(公告)号：US09923468B2
公开(公告)日：2018-03-20
申请号：US14675455
申请日：2015-03-31
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Parin Patel , Talbott M. Houk
CPC classification number: H02M3/1584 , H02M1/40 , H02M3/158 , H02M2001/0025 , H02M2001/0032 , H02M2003/1566 , Y02B70/16
Abstract: A power conversion circuit has multiple phases wherein each of the phases has an inductor coupled to a power switch circuit and is coupled to an output node. A power conversion controller controls the switching of one or more of the phases to yield a regulated voltage on the output node. The controller uses a variable inductor current limit for one or more designated phases, and temporarily increases the variable inductor current limit during a transient condition. Other embodiments are also described and claimed.
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