Supply voltage envelope detection
    13.
    发明授权
    Supply voltage envelope detection 有权
    电源电压包络检测

    公开(公告)号:US09503068B1

    公开(公告)日:2016-11-22

    申请号:US15068003

    申请日:2016-03-11

    Applicant: Apple Inc.

    CPC classification number: H03K5/159 G01R19/04

    Abstract: In an embodiment, a supply voltage envelope detector circuit is configured to detect a shape of the supply voltage over time and to compare the detected shape to expected shapes that indicate voltage droop events for which corrective action may be needed. The expected shapes may be predetermined based on one or more of: the design of the integrated circuit that includes the supply voltage envelope detector circuit; attributes of the power management unit (PMU) that is to generate the supply voltage for the integrated circuit; and/or attributes of the system that includes the integrated circuit. The shape of the voltage droop may experience little variation during use, and thus may be used to detect a droop event earlier and more accurately than a threshold-based mechanism, in some embodiments.

    Abstract translation: 在一个实施例中,电源电压包络检测器电路被配置为随时间检测电源电压的形状,并将检测到的形状与指示可能需要校正动作的电压下降事件的预期形状进行比较。 预期形状可以基于以下中的一个或多个来预先确定:包括电源电压包络检测器电路的集成电路的设计; 用于生成集成电路的电源电压的电源管理单元(PMU)的属性; 和/或包括集成电路的系统的属性。 在一些实施例中,电压下降的形状可能在使用期间几乎没有变化,因此可以用于比基于阈值的机制更早和更准确地检测下垂事件。

    Systems and Methods for Coherent Power Management

    公开(公告)号:US20220137692A1

    公开(公告)日:2022-05-05

    申请号:US17528380

    申请日:2021-11-17

    Applicant: Apple Inc.

    Abstract: In an embodiment, a system includes multiple power management mechanism operating in different time domains (e.g., with different bandwidths) and control circuitry that is configured to coordinate operation of the mechanisms. If one mechanism is adding energy to the system, for example, the control circuitry may inform another mechanism that the energy is coming so that the other mechanism may not take as drastic an action as it would if no energy were coming. If a light workload is detected by circuitry near the load, and there is plenty of energy in the system, the control circuitry may cause the power management unit (PMU) to generate less energy or even temporarily turn off. A variety of mechanisms for the coordinated, coherent use of power are described.

    Systems and methods for coherent power management

    公开(公告)号:US11204636B2

    公开(公告)日:2021-12-21

    申请号:US16519347

    申请日:2019-07-23

    Applicant: Apple Inc.

    Abstract: In an embodiment, a system includes multiple power management mechanism operating in different time domains (e.g. with different bandwidths) and control circuitry that is configured to coordinate operation of the mechanisms. If one mechanism is adding energy to the system, for example, the control circuitry may inform another mechanism that the energy is coming so that the other mechanism may not take as drastic an action as it would if no energy were coming. If a light workload is detected by circuitry near the load, and there is plenty of energy in the system, the control circuitry may cause the power management unit (PMU) to generate less energy or even temporarily turn off. A variety of mechanisms for the coordinated, coherent use of power are described.

    Systems and methods for coherent power management

    公开(公告)号:US10423209B2

    公开(公告)日:2019-09-24

    申请号:US15430699

    申请日:2017-02-13

    Applicant: Apple Inc.

    Abstract: In an embodiment, a system includes multiple power management mechanism operating in different time domains (e.g. with different bandwidths) and control circuitry that is configured to coordinate operation of the mechanisms. If one mechanism is adding energy to the system, for example, the control circuitry may inform another mechanism that the energy is coming so that the other mechanism may not take as drastic an action as it would if no energy were coming. If a light workload is detected by circuitry near the load, and there is plenty of energy in the system, the control circuitry may cause the power management unit (PMU) to generate less energy or even temporarily turn off. A variety of mechanisms for the coordinated, coherent use of power are described.

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