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公开(公告)号：US10270337B2
公开(公告)日：2019-04-23
申请号：US15145642
申请日：2016-05-03
Applicant: Apple Inc.
Inventor： Jamie L. Langlinais , Mark A. Yoshimoto
Abstract: This application relates to a power converter for a computing device. The power converter can maintain an average output current while also allowing the output current to reach a peak current limit for periods of time. The average output current is maintained by enforcing a dynamic current limit on the output current. The dynamic current limit can change over time depending on whether the average output current is above or below an average current threshold. The changes to the dynamic current limit can occur at a rate defined by one or more time constants in order to reduce electromigration and maintain a temperature of the power converter below a predetermined temperature threshold.
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公开(公告)号：US20180375364A1
公开(公告)日：2018-12-27
申请号：US16059127
申请日：2018-08-09
Applicant: Apple Inc.
Inventor： Jamie Langlinais , Mark A. Yoshimoto , Lin Chen
Abstract: The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system operates a charging circuit for converting an input voltage from a power source into a set of output voltages for charging the battery and powering a low-voltage subsystem and a high-voltage subsystem in the portable electronic device. Upon detecting the input voltage from the power source and a low-voltage state in the battery during operation of the charging circuit, the system uses a first inductor group in the charging circuit to down-convert the input voltage to a target voltage of the battery that is lower than a voltage requirement of the high-voltage subsystem. The system also uses a second inductor group in the charging circuit to up-convert the target voltage to power the high-voltage subsystem.
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公开(公告)号：US10075007B2
公开(公告)日：2018-09-11
申请号：US14749470
申请日：2015-06-24
Applicant: Apple Inc.
Inventor： Jamie Langlinais , Mark A. Yoshimoto , Lin Chen
CPC classification number: H02J7/0081 , G06F1/263 , H02J7/0068 , H02J7/0078 , H02J2007/0067 , H02M3/158
Abstract: The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system operates a charging circuit for converting an input voltage from a power source into a set of output voltages for charging the battery and powering a low-voltage subsystem and a high-voltage subsystem in the portable electronic device. Upon detecting the input voltage from the power source and a low-voltage state in the battery during operation of the charging circuit, the system uses a first inductor group in the charging circuit to down-convert the input voltage to a target voltage of the battery that is lower than a voltage requirement of the high-voltage subsystem. The system also uses a second inductor group in the charging circuit to up-convert the target voltage to power the high-voltage subsystem.
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公开(公告)号：US20240313646A1
公开(公告)日：2024-09-19
申请号：US18618171
申请日：2024-03-27
Applicant: Apple Inc.
Inventor： Hao Zhou , Sarfraz Shaikh , Jay B. Fletcher , Sanjay Pant , Mark A. Yoshimoto , Vincenzo Bisogno , Shawn Searles
Abstract: A power management circuit included in a computer system regulates a voltage level of a power supply node used by other circuits in the computer system. The power management circuit includes a control circuit and multiple phase circuits coupled to the regulated power supply node via corresponding inductors. The control circuit selectively activates particular ones of the multiple phase circuits allowing them source respective currents to the regulated power supply node. The control circuit also selectively activates particular ones of other phase circuits that are external to the power management circuit and coupled to the regulated power supply node via their own corresponding inductors. Once activated, the external phase circuits source respective currents to the regulated power supply node via their corresponding inductors.
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Patent Agency Ranking
公开(公告)号：US20230369972A1
公开(公告)日：2023-11-16
申请号：US18317679
申请日：2023-05-15
Applicant: Apple Inc.
Inventor： Hao Zhou , Sarfraz Shaikh , Jay B. Fletcher , Sanjay Pant , Mark A. Yoshimoto , Vincenzo Bisogno , Shawn Searles
Abstract: A power management circuit included in a computer system regulates a voltage level of a power supply node used by other circuits in the computer system. The power management circuit includes a control circuit and multiple phase circuits coupled to the regulated power supply node via corresponding inductors. The control circuit selectively activates particular ones of the multiple phase circuits allowing them source respective currents to the regulated power supply node. The control circuit also selectively activates particular ones of other phase circuits that are external to the power management circuit and coupled to the regulated power supply node via their own corresponding inductors. Once activated, the external phase circuits source respective currents to the regulated power supply node via their corresponding inductors.
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公开(公告)号：US11152808B2
公开(公告)日：2021-10-19
申请号：US16059127
申请日：2018-08-09
Applicant: Apple Inc.
Inventor： Jamie Langlinais , Mark A. Yoshimoto , Lin Chen
Abstract: The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system operates a charging circuit for converting an input voltage from a power source into a set of output voltages for charging the battery and powering a low-voltage subsystem and a high-voltage subsystem in the portable electronic device. Upon detecting the input voltage from the power source and a low-voltage state in the battery during operation of the charging circuit, the system uses a first inductor group in the charging circuit to down-convert the input voltage to a target voltage of the battery that is lower than a voltage requirement of the high-voltage subsystem. The system also uses a second inductor group in the charging circuit to up-convert the target voltage to power the high-voltage subsystem.
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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：US20180090945A1
公开(公告)日：2018-03-29
申请号：US15455907
申请日：2017-03-10
Applicant: Apple Inc.
Inventor： Jamie L. Langlinais , Mark A. Yoshimoto
IPC: H02J7/00
Abstract: A battery charger has at least two phases and coupled switches that are controlled using switch mode power supply (SMPS) techniques. One of the phases is part of a buck-boost circuit that includes a high side switch, which is coupled between a near end of the phase and the input, and a low side switch that is coupled between a far end of the phase and ground. The far end of the phase is also coupled to a battery, through a further high side switch. A controller signals the switches into open and closed states so that the buck-boost circuit is operated in buck mode when charging the battery at a low voltage, and in boost mode when charging the battery at a high voltage. Other embodiments are also described and claimed.
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