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：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.