公开(公告)号：US10348198B2

公开(公告)日：2019-07-09

申请号：US15691461

申请日：2017-08-30

Applicant: Apple Inc.

Inventor： Fabio Ongaro ,  Michael Couleur

IPC: H02M3/156 ,  H02M1/08 ,  H02M1/00

Abstract: Systems, apparatuses, and methods for generating a stable output voltage for one or more components by checking feedback information for an entire clock period are described. In various embodiments, a power converter generates an output voltage for one or more components. When the load current drawn by the one or more components changes, an inductor current of a low pass filter and monitored by a current sense amplifier also changes. The clock period is divided into a high phase and a low phase with one of the phases being a relatively short phase. During the relatively short phase, the current sense amplifier does not have sufficient time to measure feedback information. Instead of selecting a voltage output of the current sense amplifier, control logic selects a voltage output of a voltage generator, which emulates a voltage ramp with a slope of the inductor current during the relatively short phase.

公开(公告)号：US20190068054A1

公开(公告)日：2019-02-28

申请号：US15691461

申请日：2017-08-30

Applicant: Apple Inc.

Inventor： Fabio Ongaro ,  Michael Couleur

IPC: H02M3/156 ,  H02M1/08

CPC classification number: H02M3/156 ,  H02M1/08 ,  H02M2001/0009 ,  H02M2001/0048

Abstract: Systems, apparatuses, and methods for generating a stable output voltage for one or more components by checking feedback information for an entire clock period are described. In various embodiments, a power converter generates an output voltage for one or more components. When the load current drawn by the one or more components changes, an inductor current of a low pass filter and monitored by a current sense amplifier also changes. The clock period is divided into a high phase and a low phase with one of the phases being a relatively short phase. During the relatively short phase, the current sense amplifier does not have sufficient time to measure feedback information. Instead of selecting a voltage output of the current sense amplifier, control logic selects a voltage output of a voltage generator, which emulates a voltage ramp with a slope of the inductor current during the relatively short phase.

公开(公告)号：US20180367038A1

公开(公告)日：2018-12-20

申请号：US16113832

申请日：2018-08-27

Applicant: Apple Inc.

Inventor： Michael Couleur ,  Fabio Ongaro ,  Dashun Xue

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M3/1584 ,  H02M2003/1586

Abstract: A regulator circuit that employs coupled inductors with on-time modulation is disclosed. The regulator circuit includes a driver circuit coupled via first and second inductors to a power supply node of a load circuit, and may charge the power supply node via the first inductor for a first charging period, and charge the power supply node via the second inductor for a second charging period. A control circuit may determine durations of the first and second charging periods using respective pluralities of currents.

公开(公告)号：US10063145B1

公开(公告)日：2018-08-28

申请号：US15444594

申请日：2017-02-28

Applicant: Apple Inc.

Inventor： Michael Couleur ,  Fabio Ongaro ,  Dashun Xue

IPC: G05F1/00 ,  H02M3/158

Abstract: A regulator circuit that employs coupled inductors with on-time modulation is disclosed. The regulator circuit includes a driver circuit coupled via first and second inductors to a power supply node of a load circuit, and may charge the power supply node via the first inductor for a first charging period, and charge the power supply node via the second inductor for a second charging period. A control circuit may determine durations of the first and second charging periods using respective pluralities of currents.