公开(公告)号：US10819238B1

公开(公告)日：2020-10-27

申请号：US16032625

申请日：2018-07-11

Applicant: Cirrus Logic International Semiconductor, Ltd.

Inventor： Eric J. King ,  Eric B. Smith ,  Hasnain Akram ,  Sean Davis

IPC: H02M1/00 ,  H02M3/158 ,  G05F1/66 ,  H02M3/00

Abstract: A power supply system and method include multiple power conversion units (PCUs) with independent power generation control and a PCU-to-PCU regulation of power, handoff control system to transfer control of power regulation to a load among the PCUs. The multiple PCUs maintain independent power generation control to collectively provide power to the load and handoff regulation of the power to the load from one PCU to another PCU. The term “handoff” refers to communication between PCUs that affects a transfer and acceptance of regulation of power control. The independent PCU power generation control with singularly located but transferable control of the regulation of power provides a flexible dynamic power supply.

公开(公告)号：US11855471B2

公开(公告)日：2023-12-26

申请号：US17377513

申请日：2021-07-16

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ivan Perry ,  Hasnain Akram ,  Eric J. King

IPC: H02J7/00

CPC classification number: H02J7/0068 ,  H02J7/0063 ,  H02J2207/20 ,  H02J2310/22

Abstract: A power management system for use in a device comprising a battery and one or more components configured to draw electrical energy from the battery may include a first power converter configured to electrically couple between charging circuity configured to provide electrical energy for charging the battery and the one or more downstream components and a bidirectional power converter configured to electrically couple between the charging circuitry and the battery, wherein the bidirectional power converter is configured to transfer charge from the battery or transfer charge from the battery based on a power requirement of the one or more components and a power available from the first power converter.

公开(公告)号：US11837956B2

公开(公告)日：2023-12-05

申请号：US17478433

申请日：2021-09-17

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Hasnain Akram ,  Graeme G. Mackay ,  Lingli Zhang ,  Ruoxin Jiang ,  Sakkarapani Balagopal ,  Theodore M. Burk

IPC: H02M1/32 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/0009 ,  H02M1/32

Abstract: A method for determining if an inductor coupled to a switching network has been electrically shorted may include applying a voltage across the inductor for a predetermined period of time, controlling an impedance in an electrical path of a voltage source generating the voltage and the inductor, sensing an inductor current through the inductor, comparing the inductor current with a predetermined current threshold, and determining whether the inductor has been electrically shorted based on the inductor current, the predetermined current threshold, and the predetermined period of time.

公开(公告)号：US12184110B2

公开(公告)日：2024-12-31

申请号：US18503830

申请日：2023-11-07

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ivan Perry ,  Hasnain Akram ,  Eric J. King

IPC: H02J7/00

Abstract: A power management system for use in a device comprising a battery and one or more components configured to draw electrical energy from the battery may include a first power converter configured to electrically couple between charging circuitry configured to provide electrical energy for charging the battery and the one or more downstream components and a bidirectional power converter configured to electrically couple between the charging circuitry and the battery, wherein the bidirectional power converter is configured to transfer charge from the battery or transfer charge from the battery based on a power requirement of the one or more components and a power available from the first power converter.

公开(公告)号：US11843317B2

公开(公告)日：2023-12-12

申请号：US17550492

申请日：2021-12-14

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Hasnain Akram ,  Graeme G. Mackay ,  Jason W. Lawrence

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/32 ,  G01R19/165

CPC classification number: H02M3/158 ,  G01R19/16538 ,  H02M1/0009 ,  H02M1/0025 ,  H02M1/32

Abstract: A system may include a boost converter configured to receive an input voltage and boost the input voltage to an output voltage and control circuitry configured to enforce a maximum current limit to limit a current drawn by the boost converter and in response to the output voltage decreasing below the input voltage, dynamically increase the current above the maximum current limit to cause the output voltage to be approximately equal to the input voltage.