-
公开(公告)号：US20250149984A1
公开(公告)日：2025-05-08
申请号：US19018305
申请日：2025-01-13
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：US12081124B2
公开(公告)日：2024-09-03
申请号：US17661509
申请日：2022-04-29
Applicant: Apple Inc.
Inventor： Jay B. Fletcher , Nathan F. Hanagami , Sanjay Pant , Hao Zhou , Shawn Searles
Abstract: A voltage regulator circuit included in a computer system may employ a control circuit and a switch array that includes multiple switch circuits. Different groups of switch circuits that include respective groups of switch devices are coupled between an input power supply node and corresponding regulated power supply nodes. To maintain desired respective voltages on the regulated power supply nodes, the control circuit compares the voltages of the regulated power supply nodes to corresponding reference voltages and, based on results of the comparisons, opens and closes various ones of the switch devices included in the different groups of switch circuits.
-
公开(公告)号：US11695336B2
公开(公告)日：2023-07-04
申请号：US17343459
申请日：2021-06-09
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.
-
公开(公告)号：US20210288648A1
公开(公告)日：2021-09-16
申请号：US16820659
申请日：2020-03-16
Applicant: Apple Inc.
Inventor： Nathan F. Hanagami , Hao Zhou , Jianbao Wang , Ruopeng Wang , Ludmil N. Nikolov
IPC: H03K19/0185 , H03K19/003 , H03K19/173 , H03K19/21 , H03K19/017
Abstract: A level shifter circuit with an intermediate power domain and method for operating the same is disclosed. The level shifter circuit includes an input circuit, an output circuit, and an intermediate circuit. The input circuit is coupled to receive an input signal from a first voltage domain operating according to a first supply voltage, and generates a first intermediate signal. The intermediate circuit receives the first intermediate signal and generates a second intermediate signal. The output circuit receives the intermediate signal and provides an output signal into a second voltage domain operating at a second supply voltage different from the first. A voltage multiplexer is configured to provide one of the first or second supply voltages to the intermediate circuit depending on a state of the input signal.
-
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.
-
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.
-
公开(公告)号：US11742762B2
公开(公告)日：2023-08-29
申请号：US17934648
申请日：2022-09-23
Applicant: Apple Inc.
Inventor： Alberto Alessandro Angelo Puggelli , Hubert Attah , Hao Zhou , Shawn Searles
CPC classification number: H02M3/1584 , H02M1/0025 , H02M1/0032 , H02M3/1586
Abstract: An apparatus includes a control circuit and a voltage regulator circuit coupled to a regulated power supply node. The voltage regulator circuit is configured to generate a power signal on the regulated power supply node using a reference voltage level. The apparatus further includes a control circuit that is configured to determine an operating mode using results of a comparison of a threshold value and a load current being drawn from the regulated power supply node by a load circuit. The control circuit may be further configured to set, in a first operating mode, the reference voltage level independently of the load current, and set, in a second operating mode, the reference voltage level using the load current.
-
公开(公告)号：US20230092655A1
公开(公告)日：2023-03-23
申请号：US17483515
申请日：2021-09-23
Applicant: Apple Inc.
Inventor： Chongli Cai , Hao Zhou
Abstract: A power converter circuit that includes multiple phase circuits may employ coupled inductors to generate a particular voltage level on a regulated power supply node. In response to an initiation of an active time period, the phase circuits cycle, out of phase with each other, between on-times and off-times. To maintain the phase relationship between the operation of the phase circuits, each phase circuit generates a ramp current that is compared to the current flowing in its corresponding inductor and then halts an off-time based on a result of the comparison.
-
公开(公告)号：US20230086364A1
公开(公告)日：2023-03-23
申请号：US17934648
申请日：2022-09-23
Applicant: Apple Inc.
Inventor： Alberto Alessandro Angelo Puggelli , Hubert Attah , Hao Zhou , Shawn Searles
Abstract: An apparatus includes a control circuit and a voltage regulator circuit coupled to a regulated power supply node. The voltage regulator circuit is configured to generate a power signal on the regulated power supply node using a reference voltage level. The apparatus further includes a control circuit that is configured to determine an operating mode using results of a comparison of a threshold value and a load current being drawn from the regulated power supply node by a load circuit. The control circuit may be further configured to set, in a first operating mode, the reference voltage level independently of the load current, and set, in a second operating mode, the reference voltage level using the load current.
-
公开(公告)号：US11456670B2
公开(公告)日：2022-09-27
申请号：US16791773
申请日：2020-02-14
Applicant: Apple Inc.
Inventor： Alberto Alessandro Angelo Puggelli , Hubert Attah , Hao Zhou , Shawn Searles
Abstract: An apparatus includes a control circuit and a voltage regulator circuit coupled to a regulated power supply node. The voltage regulator circuit is configured to generate a power signal on the regulated power supply node using a reference voltage level. The apparatus further includes a control circuit that is configured to determine an operating mode using results of a comparison of a threshold value and a load current being drawn from the regulated power supply node by a load circuit. The control circuit may be further configured to set, in a first operating mode, the reference voltage level independently of the load current, and set, in a second operating mode, the reference voltage level using the load current.
-
-
-
-
-
-
-
-
-
Search Results
30
records
(took 0.028 seconds)
