公开(公告)号：US11121711B2

公开(公告)日：2021-09-14

申请号：US17008559

申请日：2020-08-31

Applicant: Apple Inc.

Inventor： Keith Cox ,  Victor Zyuban ,  Norman J. Rohrer

IPC: H03K5/00 ,  H03K19/0175 ,  H03K5/01 ,  G11C5/14 ,  H02J1/08

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：US10483974B2

公开(公告)日：2019-11-19

申请号：US16140488

申请日：2018-09-24

Applicant: Apple Inc.

Inventor： Keith Cox ,  Victor Zyuban ,  Norman J. Rohrer

IPC: G11C5/04 ,  H03K5/01 ,  H03K19/0175 ,  G11C5/14 ,  H03K5/00 ,  H02J1/00

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：US20190097622A1

公开(公告)日：2019-03-28

申请号：US15717276

申请日：2017-09-27

Applicant: Apple Inc.

Inventor： Jaroslav Raszka ,  Amrinder S. Barn ,  Victor Zyuban ,  Shingo Suzuki ,  Ajay Kumar Bhatia ,  Mohamed H. Abu-Rahma ,  Shahzad Nazar ,  Greg M. Hess

IPC: H03K17/16

CPC classification number: H03K17/162 ,  H03K17/145 ,  H03K19/0016 ,  H03K19/00369 ,  H03K2217/0027 ,  H03K2217/0036

Abstract: A power switch control circuit is disclosed. A sensor circuit may determine a leakage current of a power switch coupled to a power supply signal and a power terminal of a circuit block. The power switch may be configured to selectively couple or decouple the circuit block from the power supply signal using a switch control signal. The switch control circuit may, in response to receiving a request to open the power switch, determine a target voltage level that is greater than a voltage level of the power supply signal for the switch control signal using the leakage current, and transition the switch control signal from an initial voltage to the target voltage level.

公开(公告)号：US20190052271A1

公开(公告)日：2019-02-14

申请号：US16140488

申请日：2018-09-24

Applicant: Apple Inc.

Inventor： Keith Cox ,  Victor Zyuban ,  Norman J. Rohrer

IPC: H03K19/0175 ,  H03K5/01 ,  G11C5/14 ,  H02J1/00 ,  H03K5/00

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：US10084450B1

公开(公告)日：2018-09-25

申请号：US15671524

申请日：2017-08-08

Applicant: Apple Inc.

Inventor： Keith Cox ,  Victor Zyuban ,  Norman J Rohrer

IPC: G11C5/04 ,  H03K19/0175 ,  H03K5/01 ,  H03K5/00

CPC classification number: H03K19/017509 ,  G11C5/147 ,  H02J2001/008 ,  H03K5/01 ,  H03K2005/00013

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：US09712141B2

公开(公告)日：2017-07-18

申请号：US14958783

申请日：2015-12-03

Applicant: Apple Inc.

Inventor： Victor Zyuban ,  Norman J. Rohrer

IPC: H03H11/26 ,  H03K5/04 ,  H03K17/693 ,  G05F1/46

CPC classification number: H03K5/04 ,  G05F1/46 ,  H03K17/693

Abstract: Embodiments relate to modulating a power supply voltage for varying a propagation delay of data paths within an integrated circuit. The power supply voltage is modulated to increase the delay of shorter data paths for reducing an incidence of hold time violations without substantially affecting the delay of longer data paths. For example, the power supply voltage is reduced from a nominal value in the first half clock cycle to increase delay of both the shorter data paths and the longer data paths. The power supply voltage is increased from the nominal value in the second half clock cycle to decrease delay of the longer data paths within the second half clock cycle such that the overall delay of the longer data paths is virtually same as when the power supply voltage is fixed at the nominal value for the entire clock cycle.

公开(公告)号：US20170163248A1

公开(公告)日：2017-06-08

申请号：US14958783

申请日：2015-12-03

Applicant: Apple Inc.

Inventor： Victor Zyuban ,  Norman J. Rohrer

IPC: H03K5/04 ,  G05F1/46 ,  H03K17/693

CPC classification number: H03K5/04 ,  G05F1/46 ,  H03K17/693

Abstract: Embodiments relate to modulating a power supply voltage for varying a propagation delay of data paths within an integrated circuit. The power supply voltage is modulated to increase the delay of shorter data paths for reducing an incidence of hold time violations without substantially affecting the delay of longer data paths. For example, the power supply voltage is reduced from a nominal value in the first half clock cycle to increase delay of both the shorter data paths and the longer data paths. The power supply voltage is increased from the nominal value in the second half clock cycle to decrease delay of the longer data paths within the second half clock cycle such that the overall delay of the longer data paths is virtually same as when the power supply voltage is fixed at the nominal value for the entire clock cycle.

公开(公告)号：US12231044B2

公开(公告)日：2025-02-18

申请号：US18153057

申请日：2023-01-11

Applicant: Apple Inc.

Inventor： Victor Zyuban ,  Jay B. Fletcher ,  Hao Zhou

IPC: H02M3/158

Abstract: A power management circuit for computer systems includes a power converter circuit that generates different voltage levels at different time periods. Multiple voltage regulator circuits are coupled to the output of the power converter circuit and to respective local power supply nodes. Switch devices are used to bypass the voltage regulator circuits during corresponding ones of the different time periods.

公开(公告)号：US12170478B2

公开(公告)日：2024-12-17

申请号：US17820168

申请日：2022-08-16

Applicant: Apple Inc.

Inventor： Alexander B. Uan-Zo-li ,  Shuai Jiang ,  Jamie L Langlinais ,  Per H. Hammarlund ,  Hans L Yeager ,  Victor Zyuban ,  Sung J. Kim ,  Wei Xu ,  Rohan U. Mandrekar ,  Sambasivan Narayan ,  Mohamed H. Abu-Rahma ,  Jaroslav Raszka ,  Robert O. Bruckner

IPC: H02M1/00

Abstract: A power delivery sub-system included in a computer system employs a primary voltage regulator circuit that generates a primary supply voltage on a primary power supply node. The power delivery sub-system also includes multiple bypass voltage regulator circuits that source corresponding bypass currents to a local power supply nodes in an integrated circuit. The integrated circuit includes multiple circuit blocks coupled to corresponding ones of the local power supply nodes, and multiple local voltage regulator circuits coupled to the primary power supply node. When a voltage level of a given local power supply node drops below a threshold value, a corresponding local voltage regulator circuit sources a supply current to the given local power supply node.

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

IPC: H02M3/158 ,  H03K5/24

CPC classification number: H02M3/158 ,  H03K5/24

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.