-
公开(公告)号：US20210028785A1
公开(公告)日：2021-01-28
申请号：US17008559
申请日：2020-08-31
Applicant: Apple Inc.
Inventor： Keith Cox , Victor Zyuban , Norman J. Rohrer
IPC: H03K19/0175 , H03K5/01 , G11C5/14
Abstract: In an embodiment, a system includes a plurality of functional circuits, a power supply circuit, and a power management circuit. The power supply circuit may generate a shared power signal coupled to each of the functional circuits, and to generate a plurality of adjustable power signals. One adjustable power signal may be coupled to a particular functional circuit of the functional circuits. The power management circuit may a request to the power supply circuit to change a voltage level of the one particular adjustable power signal from a first voltage to a second voltage. The particular functional circuit may couple a respective power node for a sub-circuit of the particular functional circuit to either of the shared power signal or the particular adjustable power signal. The particular functional circuit may also be configured to maintain an operational voltage level on the power node.
-
公开(公告)号：US09672310B1
公开(公告)日：2017-06-06
申请号：US14795013
申请日：2015-07-09
Applicant: Apple Inc.
Inventor： Antonietta Oliva , John G. Dorsey , Keith Cox , Norman J. Rohrer , Sribalan Santhanam , Sung Wook Kang , Mohamed H. Abu-Rama , Ashish R. Jain
CPC classification number: G01R31/2894 , G01R31/2856 , G01R31/2875 , G01R31/2879
Abstract: In an embodiment, the amount of supply voltage guardband to prevent incorrect operation due to aging effects may be modeled using an IC-specific age model generated early in the product life cycle of the IC. For example, high temperature operating life (HTOL) testing may be performed at multiple temperatures and/or voltages to develop the IC-specific age model. The IC-specific age model may be more accurate then the calculations used to develop guardband voltage as discussed previously, which rely on the aging of a single transistor. The IC-specific age model may be used along with monitoring of the aging effects during operation of the IC to predict an amount of increased guardband voltage that is currently desirable to apply to the IC. The predicted amount may vary from about zero when the IC is new to the full amount of guardband voltage when the IC is nearing end of life.
-
公开(公告)号：US11722060B2
公开(公告)日：2023-08-08
申请号：US16936410
申请日：2020-07-22
Applicant: Apple Inc.
Inventor： Victor Zyuban , Norman J. Rohrer , Shawn Searles
Abstract: A converter circuit, included in a power converter circuit, may generate a given voltage level on a regulated power supply node of a computer system. A control circuit may monitor a voltage level and assert a control signal in response to a determination that a regulation event has occurred. A boost converter circuit, included in the power converter circuit, may inject charge into to the regulated power supply node via a capacitor, in response to an assertion of the control signal.
-
公开(公告)号：US20220029536A1
公开(公告)日：2022-01-27
申请号：US16936410
申请日：2020-07-22
Applicant: Apple Inc.
Inventor： Victor Zyuban , Norman J. Rohrer , Shawn Searles
Abstract: A converter circuit, included in a power converter circuit, may generate a given voltage level on a regulated power supply node of a computer system. A control circuit may monitor a voltage level and assert a control signal in response to a determination that a regulation event has occurred. A boost converter circuit, included in the power converter circuit, may inject charge into to the regulated power supply node via a capacitor, in response to an assertion of the control signal.
-
-
-
Search Results
24
records
(took 0.015 seconds)
