公开(公告)号：US20220393576A1

公开(公告)日：2022-12-08

申请号：US17892575

申请日：2022-08-22

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Eric J. KING ,  John L. MELANSON ,  Graeme G. MACKAY ,  Lingli ZHANG

IPC: H02M3/04 ,  H02J7/00

Abstract: A battery management system configured to electrically couple to a battery may include a boost converter comprising a plurality of switches arranged to provide a boosted output voltage at an output of the boost converter from a source voltage of the battery and a bypass switch coupled between the battery and the output, wherein the battery management system is operable in a plurality of modes comprising a bypass mode wherein the source voltage is bypassed to the output and when the battery management system is in the bypass mode, at least one switch of the plurality of switches is enabled to increase a conductance between the battery and the output.

公开(公告)号：US20220286050A1

公开(公告)日：2022-09-08

申请号：US17825775

申请日：2022-05-26

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Eric J. KING ,  Ajit SHARMA ,  Lingli ZHANG ,  Christian LARSEN ,  Graeme G. MACKAY

IPC: H02M3/158 ,  H02M1/08

Abstract: A system may include a power converter having a maximum allowable input power drawn from a power source, an energy storage element coupled to an output of the power converter at a top plate of the energy storage element, wherein the energy storage element is configured to store excess energy, and control circuity configured to, when an input power of the power converter exceeds the maximum allowable input power, cause excess energy stored in the energy storage element to be consumed by circuitry coupled to the output of the power converter, and in order to maintain positive voltage headroom for the circuitry coupled to the output of the power converter, selectively couple a bottom plate of the energy storage element to the power source such that excess energy stored by the circuitry coupled to the output of the power converter is consumed from the energy storage device when the input power of the power converter exceeds the maximum allowable input power.

公开(公告)号：US20220231603A1

公开(公告)日：2022-07-21

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: H02M3/158 ,  H02M1/00 ,  H02M1/32 ,  H02M1/08

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：US20190181754A1

公开(公告)日：2019-06-13

申请号：US16202463

申请日：2018-11-28

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Mikel ASH ,  Eric J. KING ,  Lingli ZHANG ,  Graeme G. MACKAY

IPC: H02M3/157 ,  H02M3/158 ,  H03M1/06 ,  H04R3/00

Abstract: A method may include controlling switching behavior of switches of a switch-mode power supply based on a desired physical quantity associated with the switch-mode power supply, wherein the desired physical quantity is based at least in part on a slope compensation signal and generating the slope compensation signal to have a compensation value of approximately zero at an end of a duty cycle of operation of the switch-mode power supply.