-
公开(公告)号：US20150069956A1
公开(公告)日：2015-03-12
申请号：US14481493
申请日：2014-09-09
Applicant: Apple Inc.
Inventor： Yongxuan Hu , Shimon Elkayam , Collin E. Connors , Liyu Yang
IPC: H02J7/00
CPC classification number: H02J7/0052 , H02J7/0004 , H02J7/0065 , H02J7/007 , H02J2007/0059 , H02M3/1582
Abstract: A charger circuit includes an interface connector that may be coupled to a power adapter that provides an input signal having an input voltage, and a buck-boost converter circuit that may be coupled to a battery having a charging voltage. At a given time, the buck-boost converter circuit operates in a mode in a group of modes based on a control signal, where the group of modes may include at least a buck mode and a boost mode. In particular, the charger circuit includes control logic that generates the control signal based on the charging voltage and a charging capability of the power adapter. Thus, if the charging voltage suitably exceeds the input voltage, the buck-boost converter circuit may operate in the boost mode. However, if the charging voltage is approximately less than or equal to the input voltage, the buck-boost converter circuit may operate in the buck mode.
Abstract translation: 充电器电路包括可以耦合到提供具有输入电压的输入信号的电源适配器的接口连接器，以及可以耦合到具有充电电压的电池的降压 - 升压转换器电路。 在给定时间，降压 - 升压转换器电路基于控制信号以一组模式工作，其中该组模式可以至少包括降压模式和升压模式。 特别地，充电器电路包括基于充电电压和电源适配器的充电能力产生控制信号的控制逻辑。 因此，如果充电电压适当地超过输入电压，则降压 - 升压转换器电路可以在升压模式下操作。 然而，如果充电电压大致小于或等于输入电压，则降压 - 升压转换器电路可以在降压模式下工作。
-
公开(公告)号：US11764621B1
公开(公告)日：2023-09-19
申请号：US17457374
申请日：2021-12-02
Applicant: Apple Inc.
Inventor： Yongxuan Hu , Nileshbhai J. Shah , José V. Santos Martinez , Stephen C. Terry
Abstract: A wireless power transmitter can include an inverter that receives a DC input and generates an AC output to drive a wireless power transmit coil coupled to an output of the inverter as well as voltage and current sensors that measure the DC input. The wireless power transmitter can further include a power management accumulator including hardware that receives voltage and current samples from the voltage and current sensors and multiplies corresponding voltage and current samples to produce power samples and memory locations that store corresponding voltage, current, and power samples. The wireless power transmitter can still further include a programmable controller that controls switching devices of the inverter responsive at least in part to the voltage, current and power samples stored in the memory locations of the power management accumulator.
-
公开(公告)号：US20190341796A1
公开(公告)日：2019-11-07
申请号：US16125611
申请日：2018-09-07
Applicant: Apple Inc.
Inventor： Bin Gu , Yongxuan Hu , Stephen C. Terry , Di Zhao , Ruchi J. Parikh , Michael D. Black , Weiyun Chen
Abstract: An electronic device may receive or provide power using bidirectional wired and wireless power converters. A bypass path may be included to bypass the battery charger and to allow direct power transfers from a connector of the electronic device to the wireless power converter or from the wireless power converter to the connector of the electronic device. Current limiting and regulation circuitry may also be included.
-
公开(公告)号：US20160306404A1
公开(公告)日：2016-10-20
申请号：US14686360
申请日：2015-04-14
Applicant: Apple Inc.
Inventor： Jose V. SANTOS Martinez , Collin E. Connors , Yongxuan Hu
CPC classification number: G06F1/266 , G06F1/325 , G06F1/3287 , G06F13/385 , G06F13/4022 , G06F13/4282
Abstract: A circuit for limiting an in-rush current for devices coupling to a capacitive load may include a port configured to receive a device and a first capacitor coupled to the port. Additionally, the circuit may include a first resistor coupled in series with the first capacitor and a switch coupled in parallel with the first resistor. The switch is configured to close after an in-rush current event has passed, thereby bypassing the first resistor from the circuit and enabling the first capacitor to effectively filter noise from the voltage output to the port.
Abstract translation: 用于限制耦合到电容性负载的器件的浪涌电流的电路可以包括被配置为接收器件的端口和耦合到端口的第一电容器。 另外，电路可以包括与第一电容器串联耦合的第一电阻器和与第一电阻器并联耦合的开关。 开关被配置为在浪涌电流事件已经过去之后关闭，从而绕过来自电路的第一电阻器，并且使得第一电容器能够有效地从输出到端口的电压中滤除噪声。
-
公开(公告)号：US20160072314A1
公开(公告)日：2016-03-10
申请号：US14845846
申请日：2015-09-04
Applicant: Apple Inc.
Inventor： Jose V. Santos , Yongxuan Hu , Steve Sterz , Rob Hoyt , Soundararajan Manthiri
IPC: H02J7/00
CPC classification number: H02J7/007 , H02J7/0006 , H02J7/0021 , H02J7/0026 , H02J7/0031 , H02J7/0036 , H02J7/0047 , H02J7/0068 , H02J7/045 , H02J2007/0001
Abstract: The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system attempts to regulate a voltage on a battery terminal in the portable electronic device to a first voltage level. Upon identifying an inability to regulate the voltage on the battery terminal to the first voltage level during a first detection period, the system detects a presence of the battery in the portable electronic device.
Abstract translation: 所公开的实施例提供一种管理便携式电子设备中的电池的使用的系统。 在操作期间，系统试图将便携式电子设备中的电池端子上的电压调节到第一电压电平。 在第一检测周期中，当识别出无法将电池端子上的电压调节到第一电压电平时，系统检测便携式电子设备中电池的存在。
-
Patent Agency Ranking
公开(公告)号：US12142931B1
公开(公告)日：2024-11-12
申请号：US17804918
申请日：2022-06-01
Applicant: Apple Inc.
Inventor： Jose V Santos Martinez , Yongxuan Hu
IPC: H02J50/00 , H02J50/12 , H02M7/5395
Abstract: A wireless power transmitter can include a wireless power transmitter coil adapted to magnetically couple the wireless power transmitter to a wireless power receiver, a resonant capacitor coupled to the wireless power transmitter coil to form a resonant circuit, and an inverter having an input that receives a DC voltage and an AC output coupled to the resonant circuit. The inverter can further include a plurality of switching devices coupled between the input and AC output of the inverter, a controller configured to generate pulse width modulated (PWM) drive signals for the plurality of switching devices, wherein the PWM drive signals are tri-state PWM signals having three output levels, and zero crossing detection circuitry that receives the PWM drive signals for corresponding switching devices and signals corresponding to voltages across the corresponding switching devices and generates gate drive signals for the corresponding switching devices.
-
公开(公告)号：US11183864B2
公开(公告)日：2021-11-23
申请号：US16125611
申请日：2018-09-07
Applicant: Apple Inc.
Inventor： Bin Gu , Yongxuan Hu , Stephen C. Terry , Di Zhao , Ruchi J. Parikh , Michael D. Black , Weiyun Chen
Abstract: An electronic device may receive or provide power using bidirectional wired and wireless power converters. A bypass path may be included to bypass the battery charger and to allow direct power transfers from a connector of the electronic device to the wireless power converter or from the wireless power converter to the connector of the electronic device. Current limiting and regulation circuitry may also be included.
-
公开(公告)号：US20190074764A1
公开(公告)日：2019-03-07
申请号：US16121205
申请日：2018-09-04
Applicant: Apple Inc.
Inventor： Yongxuan Hu , Weiyun Chen , Stephen C. Terry , Chi Kin Ho , Norah E. Nakibuuka
Abstract: This disclosure describes a system and a method to limit (i.e., regulate) the input power of a power converter as a function of the voltage and/or loading condition of a power-limited source such as a battery. In some embodiments, the power converter may comprise a transconductance amplifier that may produce a sink current to a current mirror, which in turn that may provide an adjusted current limit threshold to the power converter. The power converter may utilize the current limit threshold to perform cycle-by-cycle current limiting, thus regulating the input power drawn from the battery.
-
公开(公告)号：US20150069958A1
公开(公告)日：2015-03-12
申请号：US14481524
申请日：2014-09-09
Applicant: Apple Inc.
Inventor： Liyu Yang , Yongxuan Hu , Shimon Elkayam
IPC: H02J7/00
CPC classification number: H02J7/0052 , H02J7/0004 , H02J7/0065 , H02J7/007 , H02J2007/0059 , H02M3/1582
Abstract: A charging circuit includes an interface connector that may be coupled to a power adapter that provides an input voltage, and a buck-boost charging circuit that receives the input voltage and may be coupled to and may provide an output signal to a battery having a charging voltage. For a given input voltage and a given charging voltage, the buck-boost charging circuit operates in one of a group of modes based on a control signal, where the group of modes comprises: a buck mode, a boost mode and a buck-boost mode. In particular, the charging circuit includes control logic that generates the control signal based on the charging voltage and the input voltage. Thus, the buck-boost charging circuit may operate over a continuous range of input voltages and charging voltages.
Abstract translation: 充电电路包括可以耦合到提供输入电压的电源适配器的接口连接器，以及接收输入电压的降压 - 升压充电电路，并且可以耦合到并且可以向具有充电的电池提供输出信号 电压。 对于给定的输入电压和给定的充电电压，降压 - 升压充电电路基于控制信号工作在一组模式中，其中模式组包括降压模式，升压模式和降压 - 升压 模式。 特别地，充电电路包括基于充电电压和输入电压产生控制信号的控制逻辑。 因此，降压 - 升压充电电路可以在连续的输入电压和充电电压范围内工作。
-
公开(公告)号：US20150069957A1
公开(公告)日：2015-03-12
申请号：US14481510
申请日：2014-09-09
Applicant: Apple Inc.
Inventor： Arthur H. Chang , Yongxuan Hu , Shimon Elkayam
IPC: H02J7/00
CPC classification number: H02J7/0052 , H02J7/0004 , H02J7/0065 , H02J7/007 , H02J2007/0059 , H02M3/1582
Abstract: During operation, the DC converter and a DC battery charger controller in a charger circuit transitions from a first error signal to a second error signal for use in charging a battery, wherein the first error signal and the second error signal, respectively, correspond to feedback sources in a plurality of feedback sources with a plurality of feedback sources. Then, the DC converter and a DC battery charger controller selects a gain and an impedance to ground of a damping circuit based on the selected second error signal, where the damping circuit applies the gain and the impedance to ground to the second error signal. Moreover, the DC converter and a DC battery charger controller selects one or more clamping voltages of a voltage-clamping circuit based on the selected second error signal, where the voltage-clamping circuit applies the one or more clamping voltages to an output from the damping circuit.
Abstract translation: 在操作期间，充电器电路中的DC转换器和DC电池充电器控制器从第一误差信号转换到用于对电池充电的第二误差信号，其中第一误差信号和第二误差信号分别对应于反馈 具有多个反馈源的多个反馈源中的源。 然后，DC转换器和DC电池充电器控制器基于所选择的第二误差信号选择阻尼电路的增益和接地阻抗，其中阻尼电路将增益和对地的阻抗施加到第二误差信号。 此外，DC转换器和DC电池充电器控制器基于所选择的第二误差信号选择钳位电路的一个或多个钳位电压，其中钳位电路将一个或多个钳位电压施加到来自阻尼的输出 电路。
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.015 seconds)
