公开(公告)号：US20220103074A1

公开(公告)日：2022-03-31

申请号：US17482215

申请日：2021-09-22

Applicant: Apple Inc.

Inventor： Chongli Cai ,  Hao Zhou ,  Jay B. Fletcher

IPC: H02M3/158

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. Based on a comparison of a voltage level of the regulated power supply node and a reference voltage, the power converter circuit may initiate an active period, during which the phase circuits source respective currents to the regulated power supply node via corresponding coils included in the coupled inductor. After a time period has elapsed following an initiation of the active period, the operation of the phase circuits is adjusted so that the respective currents flowing in the coils of the coupled inductor are out of phase.

公开(公告)号：US11870345B2

公开(公告)日：2024-01-09

申请号：US17482287

申请日：2021-09-22

Applicant: Apple Inc.

Inventor： Chongli Cai ,  Dingkun Du ,  Michael B. Nussbaum

IPC: H02M3/158 ,  G06F1/28 ,  H02M3/157 ,  H02M1/00

CPC classification number: H02M3/158 ,  G06F1/28 ,  H02M3/157 ,  H02M1/0003

Abstract: A power converter circuit included in a computer system may include multiple devices and a switch node coupled to a regulated power supply node via an inductor. During a first time period, the power converter charges a capacitor, and the couples the capacitor to the switch node during a second time period. During a third time period the power converter couples the switch node to an input power supply node. To maintain constant charge delivered to the load during each time the switch node is coupled to the input power supply node, the duration of the third time period is adjusted based on a voltage level of the input power supply node, a voltage level of the regulated power supply node, a value of the inductor, and the durations of first and second time periods.

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

IPC: H02M3/158 ,  H02M1/084 ,  H02M1/00

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：US11837960B2

公开(公告)日：2023-12-05

申请号：US17483515

申请日：2021-09-23

Applicant: Apple Inc.

Inventor： Chongli Cai ,  Hao Zhou

IPC: H02M3/158 ,  H02M1/084 ,  H02M1/00

CPC classification number: H02M3/1586 ,  H02M1/0003 ,  H02M1/084 ,  H02M3/1584

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：US11736017B2

公开(公告)日：2023-08-22

申请号：US17482215

申请日：2021-09-22

Applicant: Apple Inc.

Inventor： Chongli Cai ,  Hao Zhou ,  Jay B. Fletcher

IPC: H02M3/158 ,  H02M3/157 ,  H02M1/00

CPC classification number: H02M3/1586 ,  H02M1/0009 ,  H02M3/157

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. Based on a comparison of a voltage level of the regulated power supply node and a reference voltage, the power converter circuit may initiate an active period, during which the phase circuits source respective currents to the regulated power supply node via corresponding coils included in the coupled inductor. After a time period has elapsed following an initiation of the active period, the operation of the phase circuits is adjusted so that the respective currents flowing in the coils of the coupled inductor are out of phase.

公开(公告)号：US20230096741A1

公开(公告)日：2023-03-30

申请号：US17482287

申请日：2021-09-22

Applicant: Apple Inc.

Inventor： Chongli Cai ,  Dingkun Du ,  Michael B. Nussbaum

IPC: H02M3/158 ,  H02M3/157 ,  G06F1/28

Abstract: A power converter circuit included in a computer system may include multiple devices and a switch node coupled to a regulated power supply node via an inductor. During a first time period, the power converter charges a capacitor, and the couples the capacitor to the switch node during a second time period. During a third time period the power converter couples the switch node to an input power supply node. To maintain constant charge delivered to the load during each time the switch node is coupled to the input power supply node, the duration of the third time period is adjusted based on a voltage level of the input power supply node, a voltage level of the regulated power supply node, a value of the inductor, and the durations of first and second time periods.