公开(公告)号：US20250112472A1

公开(公告)日：2025-04-03

申请号：US18770284

申请日：2024-07-11

Applicant: Apple Inc.

Inventor： Stefano Scaldaferri ,  Pietro Gabriele Gambetta ,  Enrico Zanetti

IPC: H02J7/00

Abstract: A scalable battery charger can include a leader charger and at least one follower charger. The leader can include: a DC-DC converter leader phase that receives an input voltage and operates one or more switching devices to generate a regulated output; leader control circuitry that operates the DC-DC converter leader phase to regulate the output; and a leader-follower communication interface that couples the leader control circuitry to the at least one follower charger. The at least one follower charger can include: one or more DC-DC converter follower phases that receive an input voltage and operate one or more switching devices to generate a regulated output; follower control circuitry that operates the one or more DC-DC converter follower phases to regulate the follower output; and a leader-follower communication interface that couples the follower control circuitry to the leader charger.

公开(公告)号：US11594967B2

公开(公告)日：2023-02-28

申请号：US17242012

申请日：2021-04-27

Applicant: Apple Inc.

Inventor： Michael Couleur ,  Nicola Rasera ,  Nikola Jovanovic ,  Pietro Gabriele Gambetta

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/00

Abstract: A hysteretic current control switching power converter with a clock-controlled switching frequency is disclosed. A power converter includes a switching circuit including a high side switch and a low side switch coupled to one another at a switching node, with an inductor being coupled between the switching node and a regulated supply voltage node. The power converter further includes a control circuit configured to alternately cause activation of the high side switch and the low side switch, wherein the control circuit is configured to activate the low side switch in response to a first voltage reaching peak threshold value, the first voltage corresponding to a current through the inductor. A ramp voltage circuit is configured to, in response to a clock signal, generate a ramp voltage, wherein the peak threshold value is based on the ramp voltage.

公开(公告)号：US20220302827A1

公开(公告)日：2022-09-22

申请号：US17203577

申请日：2021-03-16

Applicant: Apple Inc.

Inventor： Giovanni Tarroboiro ,  Pietro Gabriele Gambetta

IPC: H02M3/07

Abstract: A power converter is disclosed. The power converter includes a switching circuit coupled to a capacitor and further coupled to a regulated power supply node via an inductor. The switching circuit is configured to magnetize the inductor, using the capacitor, in response to activation of a first control signal, and further configured to charge the capacitor, using an input power supply, in response to activation of a second control signal. A control circuit is configured to activate the first control signal based on a comparison of a first threshold value and a current flowing in the inductor. The control circuit is further configured to activate the second control signal based on a comparison of a second threshold value and the current flowing in the inductor.

公开(公告)号：US11716022B2

公开(公告)日：2023-08-01

申请号：US17203577

申请日：2021-03-16

Applicant: Apple Inc.

Inventor： Giovanni Tarroboiro ,  Pietro Gabriele Gambetta

IPC: H02M3/158 ,  H02M1/00 ,  H02M3/07

CPC classification number: H02M3/158 ,  H02M1/0095 ,  H02M3/07

Abstract: A power converter is disclosed. The power converter includes a switching circuit coupled to a capacitor and further coupled to a regulated power supply node via an inductor. The switching circuit is configured to magnetize the inductor, using the capacitor, in response to activation of a first control signal, and further configured to charge the capacitor, using an input power supply, in response to activation of a second control signal. A control circuit is configured to activate the first control signal based on a comparison of a first threshold value and a current flowing in the inductor. The control circuit is further configured to activate the second control signal based on a comparison of a second threshold value and the current flowing in the inductor.

公开(公告)号：US20220345040A1

公开(公告)日：2022-10-27

申请号：US17242012

申请日：2021-04-27

Applicant: Apple Inc.

Inventor： Michael Couleur ,  Nicola Rasera ,  Nikola Jovanovic ,  Pietro Gabriele Gambetta

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/08

Abstract: A hysteretic current control switching power converter with a clock-controlled switching frequency is disclosed. A power converter includes a switching circuit including a high side switch and a low side switch coupled to one another at a switching node, with an inductor being coupled between the switching node and a regulated supply voltage node. The power converter further includes a control circuit configured to alternately cause activation of the high side switch and the low side switch, wherein the control circuit is configured to activate the low side switch in response to a first voltage reaching peak threshold value, the first voltage corresponding to a current through the inductor. A ramp voltage circuit is configured to, in response to a clock signal, generate a ramp voltage, wherein the peak threshold value is based on the ramp voltage.