公开(公告)号：US11594957B2

公开(公告)日：2023-02-28

申请号：US17203567

申请日：2021-03-16

Applicant: Apple Inc.

Inventor： Bogdan-Eugen Matei ,  Cristian Grecu ,  Fabio Ongaro ,  Giovanni Saccomanno ,  Siarhei Meliukh ,  Yesim Inam

IPC: H02M3/07

Abstract: A dual-stage boost converter is disclosed. The boost converter includes a charge pump and a boost stage. The charge pump is coupled between an input voltage source and the boost stage. The charge pump is coupled to receive the input voltage and configured to generate an intermediate voltage that is greater than the input voltage received from the input voltage source. The boost stage includes an inductor coupled to receive the intermediate voltage and is configured to generate an output voltage that is greater than or equal to the intermediate voltage.

公开(公告)号：US20220302826A1

公开(公告)日：2022-09-22

申请号：US17203567

申请日：2021-03-16

Applicant: Apple Inc.

Inventor： Bogdan-Eugen Matei ,  Cristian Grecu ,  Fabio Ongaro ,  Giovanni Saccomanno ,  Siarhei Meliukh ,  Yesim Inam

IPC: H02M3/07

Abstract: A dual-stage boost converter is disclosed. The boost converter includes a charge pump and a boost stage. The charge pump is coupled between an input voltage source and the boost stage. The charge pump is coupled to receive the input voltage and configured to generate an intermediate voltage that is greater than the input voltage received from the input voltage source. The boost stage includes an inductor coupled to receive the intermediate voltage and is configured to generate an output voltage that is greater than or equal to the intermediate voltage.

公开(公告)号：US11381172B2

公开(公告)日：2022-07-05

申请号：US17065984

申请日：2020-10-08

Applicant: Apple Inc.

Inventor： Michael Couleur ,  Nicola Rasera ,  Siarhei Meliukh

IPC: H02M3/158 ,  H02M3/156

Abstract: A control system with a voltage-to-time converter for combined buck-boost converter using a single inductor. The system includes a voltage-to-time converter circuit having first and second inputs coupled to receive first and second voltage signals, respectively. The voltage-to- time converter includes a comparator configured to compare the first voltage signal and the second voltage signal and to generate a comparator output signal at a first level if the first voltage is greater than the second voltage and at a second level if the second voltage is greater than the first voltage. The voltage-to-time converter further includes an output circuit configured to generate first and second output signals based on the comparator output signal. The output circuit is configured to provide a selected one of the first or second output signals at the first level for a duration dependent on a difference between respective voltages of the first and second voltage signals.

公开(公告)号：US20220158555A1

公开(公告)日：2022-05-19

申请号：US16951678

申请日：2020-11-18

Applicant: Apple Inc.

Inventor： Nikola Jovanovic ,  Michael Couleur ,  Siarhei Meliukh

IPC: H02M3/158 ,  H02M1/00

Abstract: A power converter is disclosed. The power converter is configured to provide a regulated output voltage. The power converter includes a first control loop configured to generate a first voltage based on a rate of change of the regulated output voltage. A second control loop is configured to generate a second voltage based on an output current provided by the power converter. An amplifier is configured to generate a third voltage based on the first and second voltages. A control circuit is configured to control the regulated output voltage based on the third voltage.

公开(公告)号：US10804803B1

公开(公告)日：2020-10-13

申请号：US16661913

申请日：2019-10-23

Applicant: Apple Inc.

Inventor： Michael Couleur ,  Nicola Rasera ,  Siarhei Meliukh

IPC: H02M3/158 ,  H02M3/156

Abstract: A DC-DC converter that provides both buck and boost voltages using a single inductor is disclosed. The DC-DC converter includes an H-bridge circuit having an inductor having first and second terminals, and a number of switches. The switches include a first switch coupled between the second inductor terminal and a boost voltage node, a second switch coupled between the second inductor terminal and a buck voltage node, and a third switch coupled between the first inductor terminal and an input voltage node. A control circuit is coupled to activate the switches in accordance with a number of different phases such that a buck voltage (e.g., less than the input voltage) is provided on the buck voltage node, while a boost voltage (e.g., greater than the input voltage) is provided on the boost voltage node.