公开(公告)号：US20250093922A1

公开(公告)日：2025-03-20

申请号：US18469101

申请日：2023-09-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Sachin DEO ,  Nariankadu HEMKUMAR ,  Mark MAY ,  Akhilesh PERSHA ,  Eric B. SMITH ,  Donelson A. SHANNON

IPC: G06F1/26

Abstract: A system may include a first controller and a second controller communicatively coupled to the first controller via a bidirectional communication channel and configured to drive a load in accordance with a target current signal, sample a load voltage of the load at a sample rate substantially slower than a time duration of electrical transients of the load, calculate a resistance of the load based on a current signal and the load voltage and communicate information indicative of the resistance to the first controller at a time interval substantially slower than the time duration of electrical transients of the load, detect when one or more accuracy-reducing events associated with the system occur, wherein an accuracy-reducing event is one which negatively affects accuracy of calculation of the resistance, and modify the information provided to the first controller when one or more accuracy-reducing events occur.

公开(公告)号：US20210396610A1

公开(公告)日：2021-12-23

申请号：US17080455

申请日：2020-10-26

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Junsong LI ,  Rahul GAWDE ,  Tejasvi DAS ,  Siddharth MARU ,  Eric B. SMITH

IPC: G01L1/26

Abstract: A control method for a user interface system may include receiving an input signal, receiving a temperature signal indicative of a temperature, generating a baseline signal based on at least one among the input signal and the temperature signal, calculating an error signal based on a difference of the input signal and the baseline signal, and modifying the baseline signal based on the error signal.

公开(公告)号：US20190089245A1

公开(公告)日：2019-03-21

申请号：US16122619

申请日：2018-09-05

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Eric J. KING ,  Eric B. SMITH

IPC: H02M3/156 ,  G05F1/46 ,  H02H9/02

Abstract: A method may include monitoring a current through a power inductor of a boost converter and detecting when a mathematical integral of a difference between the current as monitored and a desired average current for the power inductor is equal to zero. Another method may include in a first mode of operation of a boost converter, controlling switching behavior of switches of the boost converter to regulate an output voltage generated by the boost converter and in a second mode of operation of the boost converter, controlling switching behavior of switches of the boost converter to regulate an input current received by the boost converter. Another method may include monitoring a current through a power inductor of a boost converter and detecting when the current as monitored exceeds a maximum current for the power inductor.

公开(公告)号：US20190013735A1

公开(公告)日：2019-01-10

申请号：US15783744

申请日：2017-10-13

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Eric J. KING ,  Eric B. SMITH ,  Mark MAY

IPC: H02M3/158 ,  H02M1/14 ,  H03F3/217 ,  H03F1/02 ,  G01R33/385

Abstract: A system may include a first capacitor, a first switched-mode power supply configured to deliver energy from a power source to the first capacitor at an output load of the first switched-mode power supply, a second capacitor having a capacitance larger than the first capacitor, a second switched-mode power supply configured to deliver energy from the power source or a second power source to the second capacitor and one or more switching elements coupled between the first capacitor and the second capacitor. The system may operate in a plurality of modes, including a first mode in which the first switched-mode power supply transfers energy to the first capacitor and the second capacitor, a second mode in which the second capacitor transfers energy to the first capacitor, and a third mode in which first switched-mode power supply transfers energy to the first capacitor and the second capacitor and the second switched-mode power supply transfers energy to the first capacitor and the second capacitor.